Metreg MQM - Use and Scope of Quantometers; Design of the MQM Quantometer

3. Declaration
Declaration of Conformity (AnnexA)
4. Use and Scope of Quantometers
TheQuantometerMQMisdesignedfornonescalorin-plantmeteringofnaturalgasand
approved according the European guidelines of 97/23/EG. The MQM Quantometer is suitable
tobeinstalledinhazardousareaofCategory2(Zone1)II2GcIICT4X.
TheMQMQuantometerissuitableforthefollowinggases:
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Naturalgas,towngas,propane,butane,ethylene,air,nitrogen,noblegases
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Furthergasesonrequest.
TheMQMQuantometercannotbeusedfor:Oxygen,Acetyleneandotheraggressivegases
as well as for explosive gases and gas mixtures. The meter should not be used in applications
with the presence of strong pulsations. These conditions will result in an increased error and
maysignicantlydecreasethemeter’slifetime.
5. Design of the MQM Quantometer
Zähleraufbau
1 Meter housing
2 Turbine rotor
3 Meter index head
4 Magnet coupling
5 Flowconditioner
6 Measuring unit housing
7 Measuring unit
Note: In case of failure or damage:
Repairs are only allowed to be done
by qualied and authorized repair centers.
Fig. 1: Sectional view of MQM Quantometer
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