Process Measurement Solutions Temperature, Pressure & Flow
www.rototherm.co.uk
Process Measurement Solutions With over seventy five years of experience, the British Rototherm Group continues to be a world leader in the manufacture of industrial instrumentation for measuring, monitoring and controlling Temperature, Pressure, and Flow. British Rototherm and Thermocouple Instruments products are manufactured in a modern factory located in the South Wales region of the United Kingdom. Sited on 6 acres of land at Kenfig Industrial Estate, the company operates from a modern 6,030 square metre (65,000 square feet) factory. British Rototherm is an established manufacturer of custom designed process measurement equipment for a wide range of industries including Petrochemical, Oil and Gas, Chemical, Contract Engineering, Pharmaceutical, Food and Brewing, Defence, Power, Steel and Water. We pride ourselves on our strength and versatility, expressed by our ability to design and manufacture to your exact requirements. This is really where our in-house expertise excels and can tailor the exact solutions to your needs. Our strong technical advice and software programmes, designed in-house, help to make your measurements accurate, reliable and easier to attain. Our quality process is crucial to our service and our ISO9001 and ATEX approved assemblies ensure you get quality service not only from the product, but also from the moment you call us.
Contents Introduction..................................................................................
1
Our Group.....................................................................................
2
Temperature Thermometers..................................................................
3
Temperature Recorder.......................................................
4
Temperature Assemblies..................................................
5
Temperature Switches.....................................................
6
Pressure Pressure Gauges..............................................................
7
Pressure Recorders...........................................................
8
Pressure Switches.............................................................
9
Pressure Transmitters.......................................................
10
Flow Recorders.................................................................
11
Flow Meters.....................................................................
12
Primary Flow Elements.....................................................
13
Flow
Other Products
2 |
Rototherm - Process Measurement Solutions
Chart Recorder Accessories..............................................
14
Manifolds & Minifolds......................................................
15
Pressure Gauge Accessories...............................................
16
Service & Support.........................................................................
17
Our Group Over the past 15 years, the Rototherm group has been expanded to include a number of well know companies, each well established as market leaders within their business. At the centre of each group member is the continued commitment to product quality and the highest levels of customer service.
Thermocouple Instruments
RTD Products
Thermocouple Instruments
RTD Products
A world leader in the manufacture of temperature assemblies and flow instrumentation.
The UK’s leading manufacturer of ceramic encapsulated wire wound platinum resistance temperature detectors.
For more information visit: www.thermocouple.co.uk
For more information visit: www.rtd-products.co.uk
Bentley instruments
HNLEngineering
Bentley Instruments Co. Ltd.
HNL Engineering
Ireland’s leading provider of solutions in the fields of instrumentation, on-site calibration and service, metal detection, tablet and capsule dedusting and powder handling.
HNL is a major UK based instrumentation manufacturer and precision machining services provider to a wide range of process related industries. Products include pressure and temperature switches along with a wide range of manifolds and minfolds suitable for a wide range of industrial applications.
For more information visit: www.bentley-instruments.com
For more information visit: www.hnl-uk.com
Our Mission It is our philosophy that the customer is the absolute priority. We have a duty to maintain this principle, and we believe it will give us the edge over our competitors.
This reputation has been confirmed by formal approval to Quality Assurance standard ISO9001:2008. TM
We have a highly trained team of sales engineers who listen to, and understand your needs, to achieve the very best solutions with the minimum of fuss. Our drawing office is extremely experienced and can provide detailed drawings of your requirements prior to manufacture. Customer satisfaction and approval, particularly at these early stages, means everything. From planning, through manufacture, assembly and testing our quality management systems ensures your expectations are exceeded.
Total Quality At the centre of everything we do, Rototherm’s high quality and performance is guaranteed by an uncompromising approach to quality. Rototherm’s policy has always been to maintain a consistently high level of quality and reliability throughout its product range and service to customers. The company has worked energetically towards establishing comprehensive quality controls ad has earned a worldwide reputation for product quality.
ISO9001:2008 All calibration standards are traceable to national standards thus allowing the issuing of test or calibration certificates when required. British Rototherm is approved by major companies in the United Kingdom
ATEX
APPROVED PRODUCTS
and throughout the world, for the supply of instrumentation and associated products.
www.rototherm.co.uk
3
Chart Recorders & Recorder Controllers • Temperature, Pressure, Flow & Humidity • Rugged design & construction • Accurate & reliable measuring systems • Up to 3 recording pens • Simple installation & maintenance required • Fully mechanical versions available • Choice of mounting options - wall / panel / portable / 2” pipe • Electrical and pneumatic control options • Spares and consumables widely available An extensive range of chart recorders and controllers which includes programmable microprocessor electric-input recorder controllers and a wide range of mechanical recorders for temperature, pressure, humidity and flow with options for electrical or pneumatic control. Rototherm chart recorders can be used to record and control: • Temperature • Pressure • Humidity • Flow Each recorder is supplied with a packet of 100 charts and 1 spare packet of pens for each pen.
Maximum number of pens
Chart Diameter
Wall Mounting
Portable Mounting
2” pipe / post mounting
Electric chart drive
Mechanical chart drive
All mechanical version
Temperature / Pressure
Humidity Option
Flow Pen option
Electrical Input
Electrical control
Pneumatic control
Chart Recorders Features
Sentinel Microprocessor Recorder
3
9”
x
x
x
x
Clearscan Recorders
3
12”
x
x
x
x
C105 Recorders
2
10”
x
x
x
x
x
Model RPO Pressure Recorders
3
9”
x
x
x
Model RTO Temperature Recorders
3
9”
x
x
x
Model RTH Series Recorders
2
9”
x
x
x
x
x
x
x
x
= standard feature = available option x = not available Chart Recorders - key to symbols + -
4 |
Temperature Measurement
Flow Measurement
Pressure Measurement
Humidity Measurement
Chart Recorders & Recorder Controllers
Available to purchase online
Sentinel Microprocesser Based Chart Recorders • • • • • • • • •
1, 2 or 3 pen versions available User configurable via front panel keypad Easy-to-use menu-driven software for rapid configuration and calibration Universal input accepts thermocouples, RTDs, Vdc and mAdc Large character alphanumeric display panel with backlight High accuracy and stability Microprocessor control of ranging, relays, chart speed and sensor linearisation Combinations of temperature, pressure, and flow can be specified
Clearscan C105 Chart Recorders • • • • • •
2 pen pressure recording at low cost Simple installation & maintenance Fully mechanical versions available Electrical control options Robust & reliable Combinations of temperature and pressure can be specified Developed from the ex Kent Industrial Measurement and Cambridge range of temperature circular chart recorders, the C105 continues to be available and still offer the same reliability and versatility that has been manufactured for the past 30 years.
The Sentinel range of micro-processor based circular chart recorders is available in 1, 2 and 3 channel versions. Sentinel combines the simplicity and clarity of pen drawn traces together with the versatility of microprocessor control.
+ -
Each channel is equipped with a universal signal input which is compatible with all industry standard sensors and signals including thermocouple types J, K, T, E, N, R, S and B, Pt100 platinum resistance temperature detectors and 4 to 20mA current loops.
+ -
RPO Pressure Chart Recorders • • • • •
1, 2 or 3 pen temperature & pressure recording at low cost Simple installation & maintenance Fully mechanical versions available Electrical control options Combinations of temperature and pressure can be specified
Clearscan Chart Recorders • • • • • •
The RPO series of pressure circular chart recorders uses the well proven and reliable Rototherm non ferrous or stainless steel pressure system.
1, 2 or 3 pen temperature, pressure & flow recording Simple installation and maintenance requirements Wall, panel, portable or pipe mounting available Fully mechanical versions available Electrical, battery or mechanical chart drive options Large 12 inch diameter chart The Clearscan range of circular chart recorders with a 12 inch (300mm) diameter chart are proving to be a great success with our customers throughout the world.
+ -
excellent value for money.
The C105 pressure and temperature recorders are supplied in a robust, heavy duty steel bodies and can be supplied with up to two pens - both temperature or a choice of temperature and pressure.
These reliable and accurate instruments are suitable for most applications where there is a requirement for low cost pressure recording.
+ -
The RTO filled system range of temperature circular chart recorders uses the well proven and reliable Rototherm stainless steel thermal system.
The Clearscan range of recorders are suitable for most industrial applications.
These reliable and accurate instruments are suitable for most applications where there is a requirement for low cost temperature recording.
Each recorder uses a proven and relaible Rototherm temperature, pressure or differential pressure system. As well as being easy to install and maintain, the Rototherm Clearscan range of recorders offer
Up to three pens can be fitted with three temperature systems or combination of temperature and pressure sensing systems. The case is suitable for panel mounting or may be specified as portable or pipe mounting. Each recorder is supplied with 100 charts and spare pens.
Clearscan recorders are available with black steel and 316 stainless steel cases. Clearscan recorders use charts, pens and chart drive motors that are 100% interchangeable with some other manufacturers.
www.rototherm.co.uk
5
RTO Temperature Chart Recorders • • • • •
1, 2 or 3 pen temperature & pressure recording at low cost Simple installation & maintenance Fully mechanical versions available Electrical control options Combinations of temperature and pressure can be specified
RTH Series Temperature & Humidity Chart Recorders • • • • •
Temperature and/or humidity recording at low cost Simple installation & maintenance Uses proven bimetallic coil and hygroscopic membrane Choice of chart rotations Ambinet or remote sampling options available
The RTO filled system range of temperature circular chart recorders uses the well proven and reliable Rototherm stainless steel thermal system.
The RTH100 Series of temperature and humidity circular chart recorders uses the proven design combination of bimetallic coils and hygroscopic membrane for the direct measurement of temperature and humidity.
These reliable and accurate instruments are suitable for most applications where there is a requirement for low cost temperature recording. Up to three pens can be fitted with three temperature systems or combination of temperature, and pressure sensing systems. + -
The case is suitable for panel mounting or may be specified as portable or pipe mounting.
Each recorder is supplied with 100 charts and spare pens.
Changes in atmospheric temperature and humidity are detected by the two elements within the recorder. The bimetallic coil monitoring the temperature and hygroscopic membrane monitoring the humidity. + -
Air is drawn through the instrument and over the two sensing elements by an electrically driven fan. Expansion or contraction of the bimetallic coil, due to temperature change, causes the pen movement by direct linkage. Similarly a change in humidity causes extension, or contraction, of the hygroscopic membrane and direct linkage again causes movement of the second pen. Please note that control options are no longer offered
Chart Recorder Consumables and Spares A complete range of circular charts are available for all Rototherm, Negretti and ABB Kent Industrial Measurement recorders and controllers. All pens and a wide selection of the popular chart ranges and sizes are available from stock. Also kept in stock are a large selection of disposable pens suitable for all Rototherm recorders and controllers. A wide range of chart recorder consumables are available along with stock pressure gauges and gauge accessories are avaialble from Rototherm’s onlune shop. Deliveries are fast with most products available for shipment within 24 hours after order placement. Please visit www.rototherm-online.co.uk for more details. Please note that the Rototherm online store is currently only available to UK customers with deliveries to UK postal addresses.
6 |
Chart Recorders & Recorder Controllers
Thermometers • Rugged design & construction • Accurate & reliable measuring systems • Analogue and Digital versions available • Wide choice of measuring ranges • Electrical control options
Bimetallic Thermometers
Bimetallic thermometers are manufactured in various versions to suit most industrial applications . All bimetallic thermometers are manufactured with stainless steel cases and sensing stems and are used in many industries including food, beverage, dairy, pharmaceutical and petrochemical.
Filled System Thermometers
As well as bimetallic thermometers, Rototherm manufactures a wide range of filled system thermometers. Developed from the original Mercury in Steel thermometers, Rototherm now manufactures these thermometers with a safe, non- toxic filling. Both rigid stem and capillary models are available and these thermometers can be specified with electrical contact heads if required.
DigiTemp Digital Thermometers
The DigiTemp range of digital thermometers are manufactured that employ micro processors enabling extremely low power consumption to be achieved thus offering extend battery life. Available with either thermocouple or RTD PT1000 sensor, DigiTemp is offered in both rigid stem and remote reading versions. The addition to the range of an ATEX approved intrinsically versions allows this product to be standardised in all pharmaceutical and petro chemical industries.
Nominal Dial Sizes Available in mm (inches)
Case Material (option)
Capillary Version Available
Mechanical Actuation
Available with a Thermowell
Maximum Temperature Range (Deg C)
Electrical Contacts Available
Available with 4-20mA Retransmission
Thermometers Features
Light Duty Bimetallic Thermometers
63 (2.5)
304 Stainless Steel
x
x
400
x
x
Heavy Duty Bimetallic Thermometers
63 (2.5), 100 (4), 160 (6)
304 Stainless Steel (316 Stainless Steel)
x
600
x
100 (4), 130 (5), 160 (6)
304 Stainless Steel (316 Stainless Steel)
x
600
x
x
63 (2.5)
304 Stainless Steel
x
x
400
x
x
Filled System Thermometers
100 (4), 160 (6)
304 Stainless Steel (316 Stainless Steel)
650
x
Diesel Exhaust Thermometers
100 (4)
Polyester Resin
650
x
x
DigiTemp Digital Thermometers
100 (4)
304 Stainless Steel (316 Stainless Steel)
x
800
x
Any Angle Pattern Bimetallic Thermometers Surface Bimetallic Thermometers
= standard feature = available option x = not available
www.rototherm.co.uk
7
BL1 & BL2 Light Duty Bimetallic Thermometers • • • • •
Choice of 50mm or 63mm dial size All stainless steel construction Wide range of temperature ranges available Models available with thermowells suitale for pipelines Models available for use on ovens, sterilizers, cabinets etc... Suitable for use on food processing equipment, the completely sealed stainless steel stem make the Rototherm range of Light Duty Bimetallic Thermometers the ideal choice for the food and beverage industry. Perspex windows can be supplied in place of glass if required for added process safety.
BH3 Any Angle Pattern Bimetallic Thermometers • • • • • •
100mm, 130mm and 160mm case options Stainless steel construction External zero adjustment Silicone filling available No contaminents - safe for food and chemical applications Can be supplied with a wide range of Rototherm thermowells The Rototherm range of Any Angle Bimetallic Thermometers allows movement of the adjustable head through 180º, through a full 360º rotation, thus allowing its position to be set for maximum readability after installation. All welded stainless steel construction of the system/bellows assembly allow full angular adjustment of the case through 360º without the need for pointer adjustment.
The Rototherm range of Light Duty Bimetallic Thermometers can be supplied for direct insertion in the process or with a compression fitting that tightens onto the stem to provide a liquid and gas type seal. The BL102 model is supplied with a thermowell to enable the thermometer to removed from the procss without the need to drain the system
BH2 Heavy Duty Bimetallic Thermometers • • • • • • • •
63mm, 100mm and 160mm case options Stainless steel construction - case and stem External zero adjustment No contaminents - safe for food and chemical applications Can be supplied with a wide range of Rototherm thermowells Can be fitted with electrical contact heads (100mm & 160mm sizes only) Available with maximum or minimum value and index pointers The Rototherm range of Heavy Duty Bimetallic Thermometers combines robust construction, that makes these instruments suitable for the most stringent environmental conditions, together with an accurately manufactured bimetallic coil, which enable each instrument to ensure a long dependable life.
BL3 Surface Temperature Thermometers • • • •
63mm dial size Spring fixing suitable for mounting to pipes (Model BL301) Magnetic fixing suitable for mounting to horizontal or vertical surfaces. Wide range of temperature ranges available A range of surface mounting bimetallic thermometers suitable for testing, balancing and fault-finding on heating systems. They can be attached to a surface by an adjustable spring or magnet to give an immediate indication of temperature without drilling or cutting. This range of bimetallic thermometers is equally suitable for use on pipelines or flat surfaces such as radiators, platens or hot plates.
Excellent thermal conductivity is provided by the aluminium housing to the bimetallic element, while the stainless steel case and bezel minimises dissipation of heat to the atmosphere.
Thermowells Used predominantly in the power, process, pharmaceutical and petrochemical industries, thermowells are used to protect temperature indicators and sensors from process media and to enable servicing or replacement of indicators without the need to shut down plant. Available with either flanges or screwed process connections, Rototherm thermowells are available fabricated from tube, drilled from barstock or from forgings. Full material certification including original mill and suppliers material certificates can be provided. If required NACE standard MR-01-75 requirements can be met. Please see page for further details on our extensive range of thermowells.
8 |
Thermometers
NC & NR Filled System Thermometers • • • • • • • •
100mm & 160mm dial sizes Stainless steel case (316 option) All stainless steel construction Back or bottom entry versions Available with capillary or rigid stem Non Toxic “Filsafe” filling Available with a wide range of thermowells Can be fitted with electrical contacts
DigiTemp Digital Thermometers & Transmitters • • • • • • •
RTD or Thermocouple Sensor Direct reading rigid stem or remote reading capillary versions available Choice of cable materials and protections ATEX versions available 4 to 20mA retransmission option MAX/MIN reading options 2 years continuous operation from 2 x AA cells
The Rototherm range of filled system thermometers offer tough yet accurate instruments with rigid stems for direct mounting or with flexible capillary for remote reading.
DT1 Digital Thermometers The Rototherm DT1 is a micro processor based, battery operated, continuous reading, type K thermocouple input digital thermometer. Two basic versions are available, both have clear four digit LCD displays with 12.7mm high characters and 1ºC/ºF resolution.
Most models in the range may be specified with electrical contact heads to provide alarm or control functions. Rototherm non toxic filled system thermometers are designed to give guaranteed reliability over a wide range of ambient temperature conditions and are compensated for ambient temperature changes from -30 to +50ºC.
NC1 & NC2 Capillary Thermometers Where display is required some distance from the sensing point, for example on an instrument panel, capillary thermometers should be used. The dial can be located up to 30 metres from the sensing point and isolated from dirt and vibration. The sensing bulb is connected by stainless steel microbore capillary, protected by stainless steel tubing. For severe conditions, flexible armour can extend the entire length of the capillary. Alternative protections can be specified if required.
The stem can be either 12.7mm or 6.35mm diameter with a reduced tip for fast response. The stem length and fitting, if required, can be user specified. The DT1-1 can be mounted directly on to a pipe line or vessel where direct, local temperature indication is required. The DT1-2 is a remote reading instrument, designed for mounting on a panel, either with a three hole front flange or a back flange for surface mounting. The indicator is connected to the sensor by a 3mm diameter stainless steel mineral insulated cable which can be fitted with a compression fitting if required.
DT2 Digital Thermometers Using common construction to the DT1, the DT2 is a high accuracy, high resolution digital temperature indicator. The DT2 uses a precision three wire thin film PT1000 resistance element as a sensor and can be supplied in both rigid stem and remote reading variants.
Options NC3 & NR3 Diesel Exhaust Thermometers The Rototherm range of diesel exhaust thermometers provide an accurate and reliable indication of the exhaust gas temperature of diesel engines and generators. The stem is fitted with a unique anti-resonant section which dampens out vibration of the instrument head, and eliminates the need for oil filling. The use of the capillary type enables all the dials to be located on a single panel to provide immediate visual comparison of the performance of each cylinder.
ATEX Approved Intrinsically Safe Versions The addition to the range of an intrinsically safe version allows this product to be standardised in all Pharmaceutical and Petro Chemical industries. Both Thermocouple (DT1X) and RTD (DT2X) sensor instruments are offered. 4/20mA signal re-transmission Any non intrinsically safe DigiTemp variant can be supplied as a two wire 4/20mA indicating temperature transmitter. Operating from a two wire DC power supply, the DigiTemp Tx can be configured during set up to re-transmit a 4/20mA signal across either the full, or part of the instruments measurement range. DigiTemp Tx is supplied with a 2 metre long connecting cable. MAX / MIN temperature logging Both DT1 and DT2 DigiTemp can be specified with MAX/MIN temperature logging.
www.rototherm.co.uk
9
Pressure Gauges • • • • •
Rugged design & construction Choice of case styles and mountings Analogue and Digital versions available Wide choice of measuring ranges Electrical control options
With the acquisition of the pressure gauge manufacturer Sydney Smith Dennis (SSD) in 1998, Rototherm’s range of pressure gauges dramatically increased to include gauges to suit most industrial applications.
Process Gauges
A wide range of process gauges are offered including stainless steel cased Elite safety pattern gauges and high corrosion resistant DMC cased pressure gauges. Low range capsule gauges are also offered.
Differential Pressure Gauges
Rototherm manufactures a range of high quality, cost effective and reliable differential pressure gauges designed to measure the difference in pressure between two points in a system and show it on a single dial gauge such as differential pressure across an orifice plate.
Digital Pressure Gauges
DigiGauge Digital Pressure Gauges offer high accuracy and a 4 digit display - which enables it to be used as a digital standard test gauge.
The DigiGauge has been designed to cover a wide range of test and measurement applications with pressure ranges from vacuum to 400 bar.
NACE MR-01-75 option
Liquid Filling option
Diaphragm Seal Unit option
Electrical Contacts Available
100 (4), 150 (6)
Dough Moulded Compound
SS M
x
Model SPG Safety Pattern Pressure Gauges
100 (4), 150 (6)
304 Stainless Steel (316 Stainless Steel)
SS M
63 (2.5), 100 (4), 150 (6), 200 (8), 250 (10), 300 (12)
Aluminium
BB SS
x
115 (4.5)
Phenol
SS M
x
x
63 (2.5), 100 (4), 150 (6)
304 Stainless Steel (316 Stainless Steel)
BB SS M
Model RCG Low Range Capsule Pressure Gauges
100 (4), 150 (6)
304 Stainless Steel (316 Stainless Steel)
BB SS
x
x
Model DPG Differential Pressure Gauges
50 (2), 63 (2.5), 80 (3), 100 (4), 112 (4.2) 115 (4.5) 150 (6)
304 Stainless Steel (316 Stainless Steel)
AL BB SS M
100 (4)
304 Stainless Steel (316 Stainless Steel)
SS
x
x
x
Model SPGA Safety Pattern Pressure Gauges Model TURRET Safety Pattern Pressure Gauges Model RPG Process Pressure Gauges
Model DG1 DigiGauge Digital Pressure Gauge
= available option x = not available
10 |
Pressure Gauges
Case Material (option)
Model DMC Safety Pattern Pressure Gauges
Nominal Dial Sizes Available in mm (inches)
Wetted Parts
Pressure Gauges Features
AL = Aluminium BB = Non Ferrous M = Monel SS = Stainless Steel
DMC Cased Safety Pattern Pressure Gauge • • • • • • • • •
SPGA Aluminium Case Safety Pattern Pressure Gauge
Available in 100mm and 150mm dial sizes DMC case has high resistance to atmospheric and chemical corrosion DMC case can withstand 160ºC direct heat without distortion. Full safety pattern to EN837 Adjustable micrometer pointer available Class 1 Accuracy to EN837 Simple installation and low maintenance Available with electrical contact head systems Can be used inconjunction with Rototherm Diaphragm Seal Units The ideal instrument for petrochemical applications both on and offshore. DMC (Dough Moulded Compound) material has a high resistance to atmospheric and chemical corrosion and high temperatures, being able to withstand 160ºC direct heat without distortion.
S
N
Application For gaseous and liquid agressive, non-viscous and non-crystallising media. For increased safety with gaseous media.
±0.25
%
SPG “Elite” Safety Pattern Pressure Gauge • • • •
• • • • • •
Available in 63mm, 100mm, 150mm, 200mm, 250mm and 300mm dial sizes Full safety pattern to EN837 Class 1 Accuracy to EN837 Choice of wetted parts materials - non ferrous or stainless steel Available to Defence Standard 66/2 latest issue Available as a high accuracy (±0.25%) precision test gauge Used predominantly in power generation, marine and defence applications, these solid front, safety pattern pressure gauge form the basis of the Rototherm range of gauges manufactured to Defence Standard 66-2. SPGA gauges are also available as Class 0.25 accuracy test gauges with 150mm, 200 mm, 250mm and 300mm dial sizes.
S
±0.25
%
Application For gaseous and liquid agressive, non-viscous and non-crystallising media. For increased safety with gaseous media.
TURRET Style Safety Pattern Pressure Gauge
Available in 100mm and 150mm dial sizes Full safety pattern to EN837 Class 1 Accuracy to EN837 Available with stainless steel and Monel wetted parts The Rototherm “Elite” SafeGauge, safety pattern pressure gauge incorporates a series of unique features that have given rise to new standards of safety and sealing.
• • • • •
115mm (4.5”) dial size Phenolic case has high resistance to atmospheric and chemical corrosion Full safety pattern to EN837 Available with stainless steel or Monel wetted parts Class 0.5 Accuracy to EN837 (dry gauges) Turret style gauges are used extensively in harsh environments - primarily those found in chemical and off shore industries.
All SafeGauges with the exception of the back entry types can be glycerine filled without the need for any modification. A damped movement to reduce the effects of vibration is offered as an option.
S
N
±0.25
%
We also offer a range of gauges with 200 mm and 250 mm dial size with mild steel cases painted black.
The back plate features a specially designed membrane forming a perfect seal every time -compensating for any atmospheric changes that could effect the calibration of the gauge.
Application For increased safety with gaseous media.
As part of their design, turret gauges are suitable for both direct and surface mounting, moulded spacer legs at three fixing points allow the back to blow out, even if the gauge is surface mounted.
S
N
Gauges are supplied as standard dry and sealed for liquid filing, or can be supplied ready filled.
Application For gaseous and liquid agressive, non-viscous and non-crystallising media. For increased safety with gaseous media.
Pressure Gauges- key to symbols
S
Full Safety Pattern to EN837 Intrinsically Safe ATEX approved
N
Wetted parts available to NACE
Available with Electrical Contacts
Liquid Filling Option
Available to purchase online
www.rototherm.co.uk
11
RPG Stainless Steel Cased Pressure Gauges • • • • • • •
Available in 63mm, 100mm, and 150mm dial sizes Adjustable micrometer pointer as standard (not 63mm) Field liquid fillable Class 1 Accuracy to EN837 (63mm dial Class 1.6) Simple installation and low maintenance Available with electical contact head systems (100 and 150mm dial size only) Can be used in conjunction with Rotothem Diaphragm Seal Units A range of economically priced 63mm, 100mm and 150mm nominal size pressure gauges ideally suited to most industrial applications where accuracy and durability is required. Gauges are available with either brass/bronze internals or all stainless steel internals.
N
A number of optional accesories are available either as factory fitted or retro fitted - these include diaphragm seal units, electrical contact head systems, syphons, overrange protectors, snubbers and additional pointers
Model RCG (Low range capsule version)
A range of economically priced RCG capsule pressure gauges with 100mm and 150mm dials are ideally suited to measuring low range pressures in dry, gaseous media. Application For gaseous and liquid media. For adverse sice conditions where pulsation or vibration exists (for liquid filled gauges)
Pressure Gauge Accessories Rototherm offers a wide range of accessories to suit all of our pressure gauges. These products include: • • • • •
Pulsation Dampeners (Snubbers) Syphons - pigtail and “U” pattern Over Range Gauge Protectors 2VG Series In-Line 2 Valve Manifold & 2VR Series Remote Mounting 2 Valve Manifold AM413 3 Valve Manifold & AM415 5 Valve Manifold
TPG High Accuracy Precision Test Pressure Gauges • • • • •
Available in 150mm, 200mm, 250mm and 300mm dial sizes Choice of case style - Aluminium, DMC (150mm) and stainless steel (150mm) Full safety pattern to EN837 Class 0.25 Accuracy to EN837 Supplied with factory calibration certificate (traceable to National Standards) The Rototherm range of precision test gauges offers a choice of case materials and dial sizes. Each gauge is hand built to the highest standards and is supplied with a mirror dial, knife edged pointer and factory calibration certificate as standard.
±0.25
%
S
As well as high accuracy analogue gauges, Rototherm is able to offer the DigiGauge Digital Pressure Gauge with 0.2% full scale accuracy.
Application For gaseous and liquid media, particularly for testing and calibration
DigiGauge Digital Pressure Gauges • • • • • • • •
High Accuracy ±0.2% full scale Stainless steel IP67 case Long battery life - 1 year continuous operation from 2 AA cells Wide selection of pressure ranges from vacuum to 400 bar 4 to 20mA output option available Intrinsically safe versions available Supplied with calibration certificate traceable to National Standards Available with MAX and MIN pressure readings High accuracy and a 4 digit display enables the DigiGauge to be used as a digital standard test gauge,replacing less accurate, sometimes fragile analogue test gauges. Factory calibration certificates traceableto National Standards are provided and UKAS calibration certificates can be supplied if required.
All standard DigiGauge’s are calibrated in a controlled environment ±0.25 at 20ºC ± 3ºC. Temperature compen% sated sensors are fitted as standard to automatically correct zero and span drift. All versions of DigiGauge can also be specified with a MAXIMUM and MINIMUM pressure logging option.
AM413 3 Valve Manifold
12 | Pressure Gauges
Stainless Steel Manifold
Over-Range Gauge Protector
400DGC
50, 63, 80, 100, 115, 150
600DGC
112
Stainless Steel
Direct, Surface, Panel, 2” pipe
Aluminium, Brass, 316 Stainless Steel
1/4” BSP or NPT female
0-0.25 to 0-10 bar
200
Stainless Steel
Direct, Surface, Panel, 2” pipe
Aluminium, Brass, 316 Stainless Steel
1/4” BSP or NPT female
0-0.25 to 0-7 bar
200
Stainless Steel
Direct, Surface, Panel, 2” pipe
Aluminium, Brass, 316 Stainless Steel
1/4” BSP or NPT female
0-0.075 to 0-4 bar
100
Stainless Steel
Direct, Surface, Panel, 2” pipe
Aluminium, Brass, 316 Stainless Steel
1/4” BSP or NPT female
0-25 to 0-600mmH2O
35
Stainless Steel
Direct, Surface, Panel, 2” pipe
Aluminium, Brass, 316 Stainless Steel
1/8” BSP or NPT female
0-15 to 0-1000mmH2O
2.4
Mounting
Maximum Static Pressure (bar)
300DGC
50, 63, 80, 100, 115, 150
Standard Ranges**
200DGR
50, 63, 80, 100, 115, 150
Connections*
50, 63, 80, 100, 115, 150
Body Material / Wetted Parts
200DPG
Case Material
Model
Nominal Dial Sizes Available in mm
Differential Pressure Gauges (light to medium duty)
Maximum Static Pressure (bar)
100 or 150
Direct, Surface, Panel, 2” pipe
316 Stainless Steel (NACE option) Monel
1/4” NPT female 1/2” BSP or NPT male
0-160 mbar to 0-25 bar
100 (200 bar option)
100 or 150
Stainless Steel (316 option)
Direct, Surface, Panel, 2” pipe
316 Stainless Steel (NACE option) Monel
1/4” NPT female 1/2” BSP or NPT male
0-25 mbar to 0-100 mbar
25
100 or 150
Stainless Steel (316 option)
Direct, Surface, Panel, 2” pipe
316 Stainless Steel (NACE option) Monel
1/4” NPT female 1/2” BSP or NPT male
0-160 mbar to 0-25 bar
200 (400 bar option)
*other connection sizes are available via adaptors
Case Material
Standard Ranges***
DP362
Connections*
DP370
Wetted Parts
DP360
Stainless Steel (316 option)
Nominal Dial Sizes Available in mm
Model
Mounting
Differential Pressure Gauges (medium to heavy duty)
**standard accuracy = ±2% FSD (Ascending)
***standard accuracy = ±2% FSD (Ascending)
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13
DSU Diaphragm Seal Units • • • • • •
Available with a wide choice of threaded or flanged process connections Wide choice of materials - including Stainless Steel, Hastelloy, Inconel, Monel Wide choice of additional protective coatings - including PTFE and Tantalaum Available for direct or remote mounting Wide choice of designs from all welded to bolted construction Suitable for a wide range of process media and conditions
PTx Pressure Transmitters • • • •
Stainless steel construction Pressure ranges up to 400 bar DIN43650 plug for easy installation Choice of process connections The Rototherm range of pressure transmitters provide a standardised 4-20mA output signal by utilising a ceramic diaphragm strain gauge mounted with an amplifier in a stainless steel housing. The DIN43650 connector plugs into the transmitter, eliminating the need for soldering thus making field interchangeability an easy operation.
Temperature compensated sensors are fitted as standard to automatically correct zero and span drift.
The fitting of a diaphragm seal unit to a pressure gauge is recommended where the medium to be measured is highly viscous or contains suspended solids or is potentially corrosive to the Bourdon Tube. Seal units are normally connected directly to the gauge, but connection may be made by flexible capillary, which makes them ideal for remote pressure indication. Flexible capillary can be used to facilitate the fitting of a gauge in a surface or panel mounting location. Maximum capillary length is 5 metres. Pressure is transmitted from the diaphragm seal unit to the bourdon tube by a suitable filling medium, the selection of which will ensure compatibility with the process and process temperature. Where it is known that the instrument will be used on processes subject to extremes of temperature, the temperature at the tapping point should be advised at the time of ordering. Diaphragm seal units can be fitted to Rototherm gauge types: SPG, RPG, DMC, SPGA and Turret gauges.
Electrical Contact Heads To provide alarm or control functions, 100 and 150mm nominal dial instruments can be specified with electrical contact heads mounted in a clear plastic window which replaces the standard one. The set point can be adjusted to any position on the scale with a removable key. Single and dual contacts systems are available. Electrical contact heads provide a repeatable switching point, but the absolute accuracy tolerance of the instrument is approximately doubled by the contacts. Electrical contact heads are availble on models SPG, RPG, DMC and SPGA. Additionally, electrical switching systems are available on all differential pressure gauges.
14 | Pressure Gauges
Temperature Assemblies The Rototherm range of temperature assemblies has been designed for all industrial applications and is manufactured in strict accordance with the companies ISO 9001:2000 Quality System. The range includes probes suitable for direct insertion into processes without protective thermowells and full assembles complete with screwed or flanged thermowells and connection heads.
Connection Heads
Our comprehensive range of connecti on heads provides the best environmental protecti on for the electrical terminals on terminal blocks or temperature transmitters fitted to resistance thermometers or thermocouple inserts.
Temperature Transmitters
Temperature transmitters are used to convert the primary sensing signal, usually a resistance change for RTD sensors or EMF for thermocouples, into a standard current signal of 4-20mA. We offer a comprehensive range of temperature transmitters suitable for thermocouples or platinum resistance thermometers (RTD), these transmitters may be either head or rack mounted. Temperature ranges may be factory set or user adjusted. (Programmable, intrinsically safe, Hart®, Profi bus® and Foundation Fieldbus® communication versions are available).
Mineral Insulated Thermocouples
A Thermocouple consists of two electrical conductors of dissimilar material connected at one end (the hot junction), the two free ends are connected to the measuring instrument via a reference junction (the cold junction). The connection of these two materials provides an electromotive force (emf).
Mineral Insulated Resistance Thermometers
A Resistance Thermometer is a temperature sensor constructed from resistance wire wound into an element. It is used to measure temperature by means of a change in the electrical resistance with a rise or fall in temperature. The most popular wire used in Resistance Thermometers is platinum, although nickel or copper can also be used.
Lagging Extensions
Lagging extensions are available in a wide range of lengths, sizes and fittings. Materials include Carbon Steel and Stainless Steel. They allow the connection head to be positioned away from the heat source, or through insulating lagging. Nipple/Union/Nipple and Breakaway couplings allow rapid disconnection for testing, and orientation.
Thermowells
Thermowells are used extensively in the power, process, pharmaceutical and petrochemical industries. They are used to protect temperature indicators and sensors from process media and enable servicing or replacement of sensors without the need to shut down plant. Thermowells are available fabricated from tube or drilled from barstock or forgings, full material certi fi cati on, including original mill and suppliers materials certifi cates can be provided. If required NACE standard MR-01-75 requirements can be met. Our custom-design ability puts us ahead of the competition for providing thermowells. As part of an assembly or as a replacement, we can provide thermowells of any size, material and specification. As part of our solution we can also offer stress and frequency calculations to ensure you have the correct design for the job.
Information - ATEX Zones (Vapours & Gases)
Safe Area
A domestic domain such as a house would be classed as safe area where the only risk of a release of explosive or flammable gas would be the propellant in an aerosol spray. The only explosive or flammable liquid would be paint and brush cleaner. These are classed as very low risk of causing an explosion and are more of a fire risk (although on rare occasions gas explosions in domestic property are known to occur). Safe areas on chemical and other plant are present where the hazardous gas is diluted to a concentration below 0.25% of its lower explosive concentration limit.
Zone 2 Area
This is a step up from the safe area. In this case it has been decided that in this zone the gas, vapour or dust would only be present under abnormal conditions (most often leaks under abnormal conditions). As a general guide, unwanted substances should only be present under 10 hours/year or 0–0.1% of the time. Explosion safety compliant equipment, should be used.
Zone 1 Area
These areas are where special or classified electrical equipment must be used. It is expected that the gas, vapour or dust will be present or expected for long periods of time under normal running. As a guide this can be defined as 10–1000 hours/year or 0.1–10% of the time. Explosion safety equipment that has a higher safety level than Zone 2 equipment must be used.
Zone 0 Area
This is the worst scenario as gas or vapour is present all of the time (over 1000 hours/year or >10% of the time). Although this is the worst case it is very rare that a zone 0 area will be in the open. Usually this would be the vapour space above the liquid in the top of a tank or drum.
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15
Connection Heads H70 Connection Head • • • • • • •
TDMC Connection Head
Choice of Materials- Stainless Steel, Cast Iron & Aluminium Weatherproof IP68 and IP66 Choice of Process Entries Flameproof - EEx de Certified EExe Certified EExnA Certified Safety Chain The Model H70 is a heavy duty IP68 rated connection head which provides environmental protection for the electrical terminals on terminal blocks or temperature transmitters fitted to resistance thermometers or thermocouple insets.
• • • • •
Heavy Duty DMC Construction Weatherproof IP65 Choice of Process Entries Self certified ExnA The Model TDMC is a heavy duty IP65 weatherproof connection head. The DMC construction makes it resistant to most chemicals and corrosive atmospheres, and is therefore suited for use on Chemical and Petrochemical complexes. The TDMC is available with a wide range of sensor assemblies. This Model has become an Industry Standard and is widely specified by Multi-national Companies.
The connection head can be specified as either weatherproof IP68 and IP66 or ATEX Approved Flameproof EEx de IIC T6 when supplied with a suitable Thermocouple Instruments sensor. The screwed lid is available in two basic configurations, one of which may be provided with a glass window (shown above right) to allow the use of a temperature transmitter with integral loop powered indicator. Versions with extended lids are also available.
BUZ Connection Head • • • • •
KNY Connection Head • • • •
General Purpose Aluminium Alloy Construction Weatherproof IP65 Suitable for Terminal Blocks or Temperature Transmitters
General Purpose Aluminium Alloy Construction Weatherproof IP67 Range of Process and Cable Entries Suitable for Terminal Blocks or TemperatureTransmitters Model BUZ is a low cost, general purpose connection head which accommodates either a standard Ryton or ceramic terminal block, or a temperature transmitter. The BUZ is of an aluminium alloy construction, and may be supplied with a variety of process and cable connections.
The model KNY is a general purpose epoxy painted, die cast aluminium connection head. It has an ‘O’ ring sealed screwed lid, with a stainless steel retention chain.
The BUS version is also available with a quick release clamp.
The KNY has an Ingress Protection rating of IP65. Versions with extended lids are also available.
Connection Head Features
Model
BUZ TDMC
Material
16 |
Cable Entries
IP Rating
Certification
LM6 Aluminium Alloy with hinged lid
M24, 1/2” BSP
M20, PG16
IP67
None
DMC Moulded natural black finish
M24, 1/2” BSP
M20, PG16
IP65
ExnA
Aluminium Alloy
1/2” BSP
M20,
IP65
None
316 Stainless Steel, Aluminium, Cast Iron
1/2” API, NPT & BSP
1/2” NPT, 3/4” NPT, M20
IP66 / IP68
EEx de, EExe, EExnA
KNE / KNY H70
Process Entries
Temperature Assemblies
Temperature Transmitters Model TR12 Digital Temperature Transmitter
Model TR24 Temperature Transmitter
• • • •
Universally programmable for RTDs, Thermocouples, Resistance - sensor, mV - sensor Output linear to temperature with input signal from RTDs and Thermocouples Analog output 4 … 20 mA, invertible, 2 - wire design Signalling configurable for sensor burnout and sensor short circuiting • Ex class protection, intrinsically safe ATEX • Approved - EEx ia llC T4 / T5 / T6, EExnA, EExd (when fitted in H70 connection head) • EMC Conformity per - EN 61326:1997/P1:1998/P2:2001 - NAMUR NE 21
• • • • • • •
Configurable with Windows® PC without sensor simulation Analogue signal processing, ideal for multiplex systems Quick response <1 ms to 90% Sensor burnout signalling according to NAMUR NE 43 Electromagnetic compatibility according to NAMUR NE 21 Measuring span from 20 K Compact design Temperature transmitter for Pt100 in 2 or 3 wire connection with 4...20mA analogue output (loop powered 2 wire technique) The TR24 temperature transmitter combines the known quick response of an analogue transmitter with the flexibility of configuration by means of a Windows PC.
The digital temperature transmitter TR12 range is designed for universal industrial use. Comprehensive configuration possibilities, for example, type of sensor, measuring range and error signalling, high accuracy, galvanic isolation and EMI protection characterize these transmitters. The compact head mounting case fits in almost any DIN connecting head.
DIN
The quick stabilisation of the output current after excitation voltage has been applied enables the use of this transmitter in multiplex systems. Setting of the measuring range, type of sensor and sensor burnout behavior takes only a matter of seconds thanks to the easy to use Windows configuration software. Time consuming adjustments and sensor simulation are not required for this transmitter.
During configuration any one of 17 input signals can be selected. Measured temperatures are from - 200 °C up to + 2300 °C.
Temperature Transmitters Features DIN Rail Mounting Option
Model
Input
Display
Certification
TR12
Universal Input - RTD, Thermocouple, Resistance & mV
Yes
Not available
EExia ExN
TR24
RTD PT100
Yes
Not available
None
TR32
Universal Input - RTD, Thermocouple, Resistance & mV
Yes
Not available
EExia EExn EExd
TR48
RTD & Thermocouple - Fixed Range
Yes
Not available
EExia / EExd*
DLI1
4 to 20 mA
Not available
Yes - 3.5 digit LCD Height 12.5mm
EExia
*when fitted into a Rototherm H70 connection head
Temperature Assemblies - key to symbols CE Conformity
DIN
DIN Rail Mounting Available
HART Communication Protocol
Intrinsically Safe ATEX approved
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17
Model TR32 Digital Temperature Transmitter
Model TR48 Temperature Transmitter • • • • • • •
ATEX Approval EExia / EExd (when fixed in H70 Head) Radio Frequency Immunity from 20 to 1000 MHz Thermocouple and RTD Inputs Differential Transmitters Open Circuit Protection Cold Junction Compensated
DIN
• • • • • • • • • • • • • • •
HART® Protocol ATEX Approved Universally programmable for 1 or 2 sensors Output linear to temperature with input signal from RTDs and Thermocouples Custom specific linearisation with max. 32 points for sensors with ohms or mV output Analog output 4 … 20 mA, invertible, 2 - wire design Signalling in accordance with NAMUR NE43 Sensor break detection in accordance with NAMUR NE89 Ex class protection, intrinsically safe EMC Conformity per - EN 61326-1:2006 & EN 61326-2-3:2006 NAMUR NE 21 Isolation voltage 1200 VAC between sensor and current loop 95 % Rh protection, moisture condensation permissible TÜV certified SIL for protective equipment Configurable via: HART® Communicator & Windows®- CE Conformity
The TR32.xS transmitters are designed for universal use in the process industry. They offer high accuracy, galvanic isolation and excellent EMI protection. When configured for a sensor with redundancy (Dual sensor), on a sensor failure it will automatically change over to the working sensor. Furthermore there is the possibility to activate Sensor Drift Detection. With this, an error signal occurs when the magnitude of the temperature difference between Sensor 1 and Sensor 2 exceeds a user-selectable value. The TR32 transmitter also has additional sophisticated supervisory functionality such as monitoring of the sensor wire resistance and sensor-break detection in accordance with NAMUR NE89 as well as monitoring of the measuring range. Moreover, this transmitter has comprehensive cyclic self monitoring functionality. The dimensions of the head-mounted transmitter match the Form-B DIN connecting heads with extended mounting space, e.g. Rototherm’s H70 or H80. The rail-mounted transmitters can be used for all standard rack systems in accordance with IEC 60715. The transmitters are delivered with either a basic configuration or configured according to customer specifications.
18 |
Temperature Assemblies
DIN
The model TR48 temperature transmitter offers a convenient method of increased system accuracy, while reducing costs through the elimination of long runs of expensive compensating cables. The transmitter requires only two wires which carry both supply voltage and current signal, and has a high degree of immunity to interference and noise pick-up.
The TR48 temperature transmitter is also available in a DIN rail mounted version. Manufactured to the same high specification with easily adjustable zero and span potentiometers, this model is ideal when larger numbers are required to be rack mounted.
Model DLI1 Loop Powered Indicator • • • • • • • • • •
Loop powered Less than 1V required from loop ATEX approved for us in IS loops IP68 enclosure available Field programmable Wide range of Zero offsets RFI protected 12.5mm high display Operating temperature -10 to +70ºC Low cost Model DLI1 is a loop powered digital indicator, which can be connected in series with any 4-20mA current loop and will display the current flowing in meaningful engineering units. The large 3 ½ digit display is easy to read and the whole device introduces a volt drop of less than 1V at full scale, which means it can be used where several other devices are already in the loop.
The Zero and span are independently adjustable so the indicator can be can be calibrated to display any range within the +/-1999 range, large positive and negative zero offsets are easily accommodated. The indicator can be supplied in an EEx de approved, IP68 enclosure in a variety of materials to suit the needs of the environment in which it is installed. Extended versions allow a transmitter and indicator to be conveniently mounted as a single unit.
Temperature Sensors Mineral Insulated Resistance Thermometers • • • •
High Accuracy and Stability Good Linearity No Compensating Cable No Cold Junction Compensation Platinum Resistance Sensors offer the highest standard of accuracy and stability of any temperature sensor. They also exhibit good linear response, covering a temperature range from -200ºC to +650ºC. They are easy to apply and require no special cables or cold junction reference.
Mineral Insulated Thermocouples • • • • •
Wide choice of Sheaths, Cold and Hot Ends and Conductor Types Approval to Power Station Standards Standard and Customised Designs Computerised Calibration Available Special Tolerances to order Our minerally insulated thermocouples are manufactured from superior grade materials. We are approved to manufacture thermocouples to BS EN 61515. We provide technical expertise, advice, design and a manufacturing facility second to none.
Platinum resistance sensors are finding increasing favour in industry, where their high accuracy, repeatability and stability are vital. Our minerally insulated RTDs are manufactured from superior grade materials. In addition we provide technical expertise, advice, design and a manufacturing facility second to none.
Resistance Detectors
RTD Types
Type
Materials
PT100
Platinum, 100Ω at 0ºC
PT130
Platinum, 130Ω at 0ºC
PT1000
Platinum, 1000Ω at 0ºC
Cu100
Copper, 100Ω at 0ºC
Ni100
Nickel, 100Ω at 0ºC
Thermocouple Types Type
Conductor Materials
Standard Tolerances
K
Nickel-Chromium/ Nickel-Aluminium
40ºC to 333ºC : ± 2.5ºC 333ºC to 1200ºC : ± 0.75%
J
Iron/ Copper-Nickel
-40ºC to 333ºC : ± 2.5ºC 333ºC to 750ºC : ± 0.75%
T
Copper/ Copper-Nickel
-40ºC to 133ºC : ± 1ºC 133ºC to 350ºC : 0.75%
E
Nickel-Chromium/ Copper-Nickel
-40ºC to 333ºC : ± 2.5ºC 333ºC to 900ºC : ± 0.75%
N
Nickel-Chromium/Si Nickel-Silicon
40ºC to 333ºC : ± 2.5ºC 333ºC to 1200ºC : ± 0.75%
B
Platinum-30%Rhodium/ Platinum-6%Rhodium
0 to 600ºC : ± 1.5ºC 600ºC to 1700ºC : ±0.25%
R
Platinum-13%Rhodium/ Platinum
0 to 600ºC : ± 1.5ºC 600ºC to 1600ºC : ±0.25%
S
Platinum-10%Rhodium/ Platinum
0 to 600ºC : ± 1.5ºC 600ºC to 1600ºC : ±0.25%
All our resistance detectors/elements are manufactured by RTD Products, a specialist division British Rototherm.
RTD Products Detectors manufactured by RTD Products are of the partially supported wire-wound type. These offer the best available balance of accuracy, stability and ruggedness. The standard* Platinum RTD Product Range is available in: • • • • • • • • • • • • •
Single or Duplex assembly IEC Classes: W0.6, W0.3, W0.15, W0.1, W0.06 and W0.03 DIN Classes: Class C, B, A, 1/3 Din, 1/5 Din, 1/10 Din Lead length 6mm (+/-1mm) Temperature Range: -200°C to +660°C Pre-aged Standard Calibration Point: 5mm from ceramic body Calibrated to IEC specifications Manufactured and tested to IEC specifications All RTDs are partially supported by aluminum oxide glass All RTDs are supplied with 2 lead wires for single and 4 lead wires for duplex to avoid resistance pollution All products are batch coded in order to ensure traceability Products are packaged to ensure safe and damage free delivery
RTD Products also provides Pt100 elements with lead wires attached. Along with RTDs of the highest quality we offer a dedicated and knowledgeable sales team who are keen to discuss best options and solutions for your needs and an Aftersales service which includes the customer service team and technical support team.
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Temperature Switches Rototherm/HNL manufacture a wide range of temperature switches with both electrical outputs and pneumatic outputs. These include ATEX certified temperature switches suitable for use in hazardous areas. Series 700 is a mechanical temperature switch - the Series 800 temperature switch is an electronic device that also functions as a temperature indicator and transmitter. Both are available with aluminium or stainless steel housings and either direct or capillary mounting.
Series 700 Standard Version These temperature switches are designed to provide electrical output switching for non-hazardous area applications. A large selection of output switches are available providing the options listed below:-
Series 700 • • • • •
HNLEngineering
Ranges from -50 to +400 Deg C Wide range of output switches Direct and remote mounting versions available Field Adjustable Excellent accuracy and reliability
Fixed or Adjustable Differential Single (S.P.D.T.) or Twin Switch (2 off S.P.D.T. effectively D.P.D.T.) Gold or Silver Contacts
Rototherm/HNL’s most popular temperature switch Mechanical Temperature Switching / Wide selection of Ranges and Outputs / Electrical & Pneumatic outputs For each of these both Electrical and Pneumatic outputs are available. The electrical outputs are available for switches to be used in Hazardous (potentially explosive atmosphere) areas (Exd, ExnC & ExtD, Exia or I.S. compatible) or for Standard (non-hazardous) areas. Due to the wide range of options available, a Series 700 switch can be supplied for most applications. In addition to the standard options detailed here HNL can design a switch to your own specification if required.
Series 700 EExd Version These temperature switches are designed to provide electrical output switching for Potentially Explosive Atmosphere applications. The Certifications available are listed below:Exd Switches (Cert. No: Baseefa07ATEX0055X) Enclosures are certified Exd IIC T4/ T5/T6 to EN60079-0 & EN60079-1. ExnC & ExtD Switches (Cert. No: HNL07ATEX0001X) Enclosures are certified EExnC IIC T4/T5/T6 & ExtD A22 IP66 100°C to EN 60079-0, EN 60079-15, EN 61241-0 & 61241-1. Exia Switches (Cert. No: Baseefa06ATEX0231X) Enclosures are certified Exia IIC T5/ T6 to EN 60079-0 & EN 50020. I.S. Compatible Series 700 switches are classified as simple apparatus, allowing use in an I.S. circuit without individual certification.
Series 700 Pneumatic Control Version Pneumatic Output Temperature Switches provide the switching of a compressed gas supply (generally air) at a pre-determined temperature. The different pneumatic output switching options are listed below:Code 61 - the pilot supply is used to operate a 3 port changeover valve. Bulkhead connections to all 3 ports of this valve are on the top of the enclosure as shown in the photo opposite. This switch has a fixed switching differential. Code 64 - as code 61 above but with an adjustable switching differential. Code 67 - primarily used when the pilot supply is natural gas as it does not have a continuous consumption of pilot gas. This switch has only two bulkhead connections - the pilot supply and the output. The output pressure is zero below the switch setpoint and equal to the supply pressure above it. Code 68 - as code 67 above but with the reverse output - the output pressure is equal to the supply pressure below the switch setpoint and zero above it. Code 71 - Primarily used for providing an input into low pressure (1.4 bar / 20 p.s.i.) logic systems. This switch has only two bulkhead connections - the pilot supply and the output. The output switch can be configured to provide an output on either a rising or falling pressure. Code 81 - as code 61 above but for lower pressure operation.
20 |
Temperature Switches
Series 800 The Series 800 Smartstat is a microprocessor controlled switch, transmitter and indicator, which enables several instruments to be replaced with a single device. Smartstats are available for the measurement of pressure / differential pressure (P & DP) and temperature (T). Replacing a transmitter, switches and a gauge with a single Smartstat reduces equipment costs. Additionally there are reductions in documentation, installation time/ fittings/cabling, and calibration/maintenance costs. Increased Accuracy/Repeatability The Smartstat provides greater accuracy and repeatability than a conventional mechanical switch. Very large and very small switching differentials can be achieved without compromising accuracy. Ease of Calibration Pushbutton calibration of switch setpoints and 4-20mA calibration can be carried out on site without additional test equipment or tools.
Additional Features Because the Smartstat is microprocessor based additional features are easily provided through the software including: • • • • • •
Programmable switching delays - the switching on or off (or both) of the relays may be delayed from 0.5 seconds to 15 minutes. This is particularly useful for preventing unwanted switching due to pressure transients. Display of MAXimum and MINimum pressures recorded by the Smartstat. Display of transmitter output in mA. Reversal of transmitter output 20-4 mA instead of 4-20 mA. Square-root extraction to provide 4-20mA output proportional to flow using a DP Smartstat. Displayed units of measurement - can be changed by the user as required.
• • •
With a mechanical switch testing the operation regularly is the only way to ensure that it is operating correctly. With the Smartstat the continuous temperature display serves to indicate that the device is operating correctly and will switch when required. Pushbutton calibration of switch setpoints can be carried out on site without additional test equipment or tools. In addition to its function as a high accuracy temperature switch the Series 800 Smartstat also functions as a temperature transmitter and temperature indicator enabling significant cost savings as several instruments can be replaced with a single device.
Series 800 Smartstat Temperature Switch There are some temperature switching applications that are very demanding due to the need for :• • • • • •
Very high (or low) temperatures. High accuracy and repeatability. Very large (or small) switching differentials. High frequency switching operation. Low frequency switching operation (once per year). Regular need to change switching temperatures.
Smartstat Custom LCD Display These requirements may exceed the capabilities of conventional mechanical temperature switches, the Smartstat was designed to overcome these problems. • • • •
Smartstat RTD elements can be used to provide ranges from -200°C to 400°C. Typical repeatability is 0.1%. Two independent single-pole, double-throw (SPDT) relays are fitted in the Smartstat, the operating points of which can be set anywhere within the range. The switching differential can be set from 1 digit to 100.0% of range without loss of accuracy. Being almost entirely ‘solid state’ the Smartstat can provide up to 100,000,000 switching operations. It can respond to changes in temperature more rapidly than a mechanical temperature switch.
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