Double Filter System RMG 905
General Description
905.01 Edition 03/2002
Serving the gas industry - WORLDWIDE
Double-Filtersystem RMG 905 Characteristics • • • •
large filtration area high degree of filtration quick exchange of the filter insert low resistive gas flow
Technical data max. admissible operating pressure
p = 100 bar
connection
screw connections without brazing and with a compression joint according to DIN 2353 for external pipe diameter 10 mm (thread connection M14 x 1.5)
filter area
247 cm2
filter grade
5 µm ... 7 µm
resistance of gas flow: -new filter insert -exchange of soiled filter insert
at ∆p ≤ 100 mbar at ∆pmax = 1 bar
medium
natural gas, air, nitrogene other gaseous media as an optional feature
material
body: filter insert: o-ring:
PED/CE and DVGW
registered
weight
ca. 1.6 kg
aluminium alloy paper rubber-like plastic material (NBR)
scheme - standard mounting position 122
29
open
89
close open 52
close
110
230
60 85
2
Double-Filtersystem RMG 905 Design and operation The fine filter RMG 905 consists of two body parts. The gas flows through the filter insert from outside to inside. It is possible to clean and re-use the filter insert. The mounting position of the filter RMG 905 is variable.
sealing
outlet connection inlet connection
filter insert
Determination of the resistance of gas flow (new filter insert) The values are calculated for natural gas. In case of other gases it is necessary to convert in the equivalent gas flow rate qn at first. When using a new filter insert the resistance of gas flow should not exceed 100 mbar. 600
qn natural gas = qn Gas f
100 70
400 300
in m3/h
40 200
20
conversion factor f
10 100 80
nitrogene 0.81 air 0.80
5 3
inlet pressure pe in bar
gas flow rate qn in m3/h
60 40 30 20
10 8 6 4 3
example given: pe = 5 bar qn 16 m3/h air equivalent gas flow rate qn natural gas = qn town gas f
=
16 m3/h 0.8
qn natural gas = 20 m3/h
2 1
2
3 4
6
8 10
20
30 40
80
100
200
400
800 1000
result: resistance of gas flow ∆p = 40 mbar
resistance of gas flow ∆p in mbar
3
We supply you with products for gas pressure regulation: RMG REGEL + MESSTECHNIK GMBH Osterholzstrasse 45, D-34123 Kassel, Germany Telephone (++49) 561 5007-0 • Fax (++49) 561 5007 107 gas pressure regulators and safety devices
RMG-GASELAN Regel + Meßtechnik GmbH Julius-Pintsch-Ring 3, D-15517 Fürstenwalde, Germany Telephone (++49) 3361 356-60 • Fax (++49) 3361 356-836 gas pressure regulating equipment, displacement meters, complete stations
Bryan Donkin RMG Gas Controls Ltd. Enterprise Drive, Holmewood, Chesterfield S42 5UZ, England Telephone (++44) 1246 501-501 • Fax (++44) 1246 501-500 gas pressure regulators, safety devices, electronic control systems
Bryan Donkin RMG Canada Ltd. 50 Clarke Street South, Woodstock, Ontario N4S 7Y5, Canada Telephone (++1) 519 5398531 • Fax (++1) 519 5373339 domestic regulators and safety devices
companies of the RMG Group RMG Messtechnik GmbH Otto-Hahn-Strasse 5, D-35510 Butzbach, Germany Telephone (++49) 6033 897-0 • Fax (++49) 6033 897-130 turbine meters, vortex meters, correctors, flow computers, odorizers
Karl Wieser GmbH Anzinger Strasse 14, D-85560 Ebersberg, Germany Telephone (++49) 8092 2097-0 • Fax (++49) 8092 2097-10
works Beindersheim Heinrich-Lanz-Strasse 9, D-67259 Beindersheim/Pfalz, Germany Telephone (++49) 6233) 3762-0 • Fax (++49) 6233 3762-40 data logging, monitor systems, danger alarm systems
WÄGA Wärme-Gastechnik GmbH Osterholzstrasse 45, D-34123 Kassel, Germany Telephone (++49) 561 5007-0 • Fax (++49) 561 5007-207 design and assembly of gas pressure regulating and metering stations
Die RMG Group of Companies on the internet: http://www.rmg.de
Your competent partner
serving the gas industry - WORLDWIDE
We reserve the right for technical changes