OIML BULLETIN
OIML R 137-1&2 is a guideline which is applicable to all gas meters and is not specifically applicable only for Thermal mass.
Ultrasonic Flow Measurement - ThesesOIML R117-1. OIML R137. Compliant withAPI and AGA. Functional safety. SIL2 /SIL3 (acc to: IEC 61508). ATEX (most recent and upto date version). OPTIMASS ... 2012-07 - OIML BULLETINMID OIML R117, R81, and R137. Transmitter interface. Dual enhanced 820 core processor. The electronic interface code is ?D?. Dual enhanced 820 ... Annexure - A - PNGRBOIML R117-1. OIML R137 (pending). Compliant with API and AGA. Ingress protection. EN 60529 (most recent and up to date version). NEMA 250 (most recent and up to ...
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