
1 Introduction
Manual TRZ 03· EN08 2018 September, 10th
18
•
DGRL2014/68/EU / (PED-ap-
proval) approval number
No. ISG-22-12-1980 (TRZ 03) and
ISG-22-12-1994 (TRZ 03-K)
Independent whether a turbine meter can be remotely read (via the encoder) it is
fitted with a metrologically controlled mechanical index. The reading of this index is
the measurement result that serves as the basis for billing.
Type
TRZ 03-K
has not been approved for custody transfer metering.
1.6 Standards / Guidelines
All RMG turbine meters have passed the disturbance measurements in compli-
ance with OIML Recommendation IR-32/89, Annex A, with slight and heavy flow
disturbances. Therefore, this meter design meets the requirements for installation
in compliance with Technical Guideline G 13 Sec. 1. Test specifications are as laid
down in PTB Testing Instructions, Vol. 29 and 30, Testing of volume gas meters
with air under atmospheric and high pressure.
The RMG turbine meters of type TRZ 03 comply with EN12261, as well as to the
MessEV MID (2014/32/EU).
1.7 Validity of meter proving
The turbine meters of type TRZ 03 which are suitable for custody transfer metering
must be subjected to subsequent meter proving at regular intervals. The validity of
meter proving is determined in the German Metering and Calibration Rules (Mes-
sEV, Edition 11, December 2014) with the following periods:
Turbine meters without lubricator
8 years
Turbine meters with flow range 65 m3/h to
4.000 m3/h
12 years
Turbine meters with flow range > 4.000 m3/h to < 16.000 m3/h
16 years
Turbine meters with flow range
16.000 m3/h
unlimitted