RMG TRZ 04, Руководство по эксплуатации

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Installation and Commissioning
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Manual TRZ 04 · EN04 · February, 1st 2017
28
Notice
The operator must record all measuring data (gas meter and operating data)
during the whole period of operation in order to detect the causes of a
possible destruction of the gas meter at an early stage and take corrective
action in good time.
Corrective action or reduction of the critical operating conditions can be
achieved by the following measures for example:

Start-up screens (mesh width < 0.15 mm)

Filters

Perforated plates (Ø 3 - 4 mm) protecting the gas meter

Valves with control drive mechanism (flow variation)

Non-return valves (pulsation and return flow)
2.2.1 Technical Guideline G 13
The installation conditions for new stations complying with TRG G 13 and the simpler
installation conditions for RMG turbine meters are compared in the table below.
Type of flow
disturbance Installation cond.
As per TR G13 Installation cond.
for RMG gas
meters Type TRZ
04 Comments
None
Inlet pipe

5 DN
Outlet pipe

2 DN
Inlet pipe

2 DN
Outlet pipe

2 DN
The outlet pipe can also be
designed as a bend.
Inlet pipe

10 DN
Flow disturbances upstream
of this inlet pipe need not be
considered, if the re-
quirement for an alternating
and pulsating flow is fulfilled
Bend
Inlet pipe

5 DN Inlet pipe

2 DN
Space bend
Inlet pipe

5 DN
and
additionally 2
perforated-plate
straighteners or one
tube-bundle straight-
ener
Inlet pipe

2 DN