INSTRUCTION MANUAL
S1740, Rev A
Mechanical Fuel Meter FM-10 Congratulations on purchase of this World Class Mechanical Fuel Meter! Meter Label • High Accuracy Mechanical Flow meter, designed to allow precise measurement of fluids compatible with the component materials
Reset Knob
• Designed for both in-line applications & gravity flow (with a minimum gravity head of 4’) • Ideal for use with Electric Fuel Pumps • Works with both fuels and oils • Robust Aluminum Die Cast construction • Available in Litre / Gallon version
Meter
PARTS DESCRIPTION REFERENCE NUMBER
DESCRIPTION
QUANTITY
1
Meter Label
1
2
Reset Knob
1
3
Meter
1
SPECIFICATIONS Meter Type
Mechanical
Mechanism
Nutating Disk
Inlet / Outlet Position
In-Line
Inlet / Outlet
1" (F) or 3/4" (F)
Threads
BSP or NPT
Flow Rate
20 to 120 LPM (5 to 32 GPM)
Accuracy
+/- 1%
Repeatability
+/- 0.30%
Max. Working Pressure
145 PSI (10 BAR)
Burst Pressure
435 PSI (30 BAR)
Pressure Loss at 60 LPM (16 GPM) with Diesel
3 PSI (0.20 BAR) 1
Working Temperature range
-10째C to 60째C (14째F to 140째F)
Max. Resettable Batch Total
999 Litres or 99.9 Gallons
Max. Non Resettable Totalizer
999999 Litres or 99999.9 Gallons
Least Count / Resolution
0.10 Litres or Gallons
Filter/ Screen Included
No
Max. Viscosity of Media
2000 cSt
Option to Recalibrate by User
Yes
Nr. Of positions in which display can be rotated
4
Protective Shroud on Meter
No
Weights & Measures Approved
No
Calibration Certificate Included
No
Water Resistance
Protection by meter label
For use with Electric Fuel Pumps
Yes
For use with Gravity Flow
Yes (minimum 4' head required)
EXPLODED VIEWS
15
14 13 12 11 10
16
9 7
17
7
8 7 7 6
7 5
2
7 7
5
7
5 4
5 3 5 1
2
COMPONENT LIST REFERENCE NUMBER
DESCRIPTION
QUANTITY
1
Meter Label
1
2
Reset Knob
1
3
Meter Cover
1
4
Knob Plug
1
5
Screw
6
6
Meter Unit
1
7
Screw
8
8
Register Base
1
9
Gear Unit
1
10
Upper Half Chamber
1
11
Nutating Disk
1
12
Lower Half Chamber
1
13
Measuring Chamber
1
14
Seal
1
15
Lower Body
1
16
Calibration Screw + O-Ring
1
17
Plug + Seal
1
If solid particles enter the measuring chamber the correct working of the nutating disk may be affected. Always filter the fluid by installing a filter on the meter inlet.
INSTALLATION & USE The meter can be installed in any position, on rigid pipelines or flexible hoses, directly on pumps or tanks. The meter flow direction is fixed and indicated by an arrow on the outlet. Meter Cover (3) can be removed and the Register base (8) along with Meter Unit (6) can be rotated at every 90째 orientation in four different positions. NOTE The meter body is equipped with 4 blind holes (see diagram) which can be threaded (M5) for a possible fastening.
2. Loosen the 2 screws on both sides and separate the meter unit (6) from the Register Base (8).
Screw
Meter Unit
Blind Hole 3. Loosen the eight screws (7) in a diagonal sequence as shown in the picture.
7 2
8 6
How to rotate the Display 1. Remove the four retaining screws (5) & lift up the meter cover (3).
5
3 1
4. Remove the Register Base (8) together with the gear unit (9). During this operation, take care not to damage the Seal (14).
Meter Cover
3
Register Base
4
Lower Body Seal
Note
5. Rotate the register base (8) in the desired position. Tighten the base with screws (7) and refit the Meter Unit (6) in the new position. Make sure that the Total gears are moving smoothly. 6. Refit the meter cover (3) and fix the meter label (1). Fix reset knob by pushing it firmly on to the reset shaft.
Always fix the plug with seal (17) to avoid leakage because the O Ring on the calibration screw (16) does not have any sealing function (The O Ring in this case only avoids accidental loosening of calibration screw).
Reset Knob
OPERATION After installation, turn the reset knob (2) until the batch total is completely reset. The totalizer cannot be reset in any way.
Meter Label
USE BY GRAVITY
This meter can also be used without pump pressure in a system where flow is generated due to difference in height between fuel level and dispensing point.
7. The display can be chosen from one among the following positions.
INSTRUCTION
Longer pipes or nozzles reduce the flow by causing higher pressure losses. Use By Gravity is not recommended where the height of fuel is lower than 4 feet as the flow rate will be reduced, resulting in inaccurate measurement. On field calibration is always advisable in case of Gravity installations.
CALIBRATION The meter is pre-calibrated in factory under standard conditions. A new calibration is necessary whenever • The meter is disassembled for maintenance • The media used is different from Diesel oil.
RECOMMENDED USE Diesel, Biodiesel, Low to medium viscosity oils DO NOT USE WITH Water based media, Gasoline etc.
Calibration procedure 1. Remove the plug and seal (17).
WETTED COMPONENTS Aluminium, Butyl Terephthalate, Nitrile Rubber
2. Vent the air from pump, pipelines and meter by dispensing until the flow stream is full and steady. 3. Stop the flow by shutting off the nozzle, but let the pump run.
MAINTENANCE
4. Reset the Batch Total using reset knob (2). 5. Dispense at the desired flow rate into a graduated container whose capacity should not be lower than 20 litres (5 gallons).
Generally this flow meter does not require any special maintenance other than the cleaning of measuring chamber (It may get clogged sometimes due to insufficient filtration).
Instruction
Note
Do not reduce the flow in order to reach a preset value of the calibration container. The right method is to start and stop the full flow repeatedly until the required level is obtained.
• The meter can be easily disassembled into its main parts without removing the body from the pipes. • Never remove meter label from the meter. • Cleaning is done with a soft brush or small tool (i.e. a screwdriver).
6. The Meter Value should be matched with the Container Value as given below.
• During cleaning, be careful not to damage the measuring chamber or nutating disk.
• If the Meter Value is higher than Container Value, loosen the Calibration screw (16).
• A new calibration is always necessary after disassembling the measuring chamber.
• If the Meter Value is lower than the Container Value, tighten the Calibration screw (16). 7. Repeat steps (4 - 6) until accuracy is satisfactory. 8. Tighten the plug with seal (17) again.
Before disassembling always make sure that the line pressure is released and all fluid is drained from the meter. 4
CLEANING OF THE MEASURING CHAMBER 1.
Remove the knob (2) by pulling it axially outwards. Remove Meter cover, Meter unit and Register base by following steps 1 - 4 from the section: “How to rotate the display”.
2.
Remove the whole measuring chamber (13) by lifting it from the Lower body (15) and at the same time pulling it back towards the inlet in order to remove the O ring from its seat.
3.
To check the inside of the measuring chamber (13), remove the O ring.
5.
Knob
Use a soft brush or a small tool (i.e a screwdriver) to clean the measuring chamber. Be careful not to damage the chamber or the disk.
6. To reassemble, reverse the above described procedure paying particular attention to:
O Ring
•
Lubricate the Seal (14) and O ring before installation
O Ring
• Check that the gear unit (9) can rotate freely before fixing the cover.
O Ring
Gear Unit 4.
Divide the two half chambers (10 and 12) containing the nutating disk (11).
• Recalibrate the meter as mentioned in the section: “CALIBRATION”.
TROUBLESHOOTING PROBLEM
Insufficient accuracy
POSSIBLE CAUSE
CORRECTIVE SOLUTION
Wrong calibration
Recalibrate as mentioned in section “CALIBRATION”
Soiled or blocked measuring chamber
Clean the measuring chamber as mentioned in section “CLEANING THE MEASURING CHAMBER”
Air in the fluid
Locate and eliminate leaks in inlet lines
Clogged measuring chamber
Clean the measuring chamber as mentioned in section “CLEANING THE MEASURING CHAMBER”
Blocked or soiled filter
Clean the filter
Reduced flowrate
5
Groz Engineering Tools (P) Ltd. Groz Net Industries Village Kherki Daula, National Highway-8 Gurgaon-122001, Haryana, INDIA TEL +91.124.282.7700 / 221.4050 FAX +91.124.2827986 / 221.4224 FAX (USA) +1.509.271.7848 FAX (UK) +44.870.121.1854 E-MAIL info@groz-tools.com URL www.groz-tools.com The Groz name, Groz logo and the mark are trademarks of Groz Engineering Tools (P) Ltd. India
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