OIML R 137
Gas Meter Test & Verification Bench
Controlled gas/air test bench for gas meters with environmental and pressure compensation.
TECHNICAL BASIS
Proposed system concept
Final configuration is selected after confirming DUT range/class, verification procedure, throughput, utilities and automation requirements.
Applicable recommendationOIML R 137
Reference-system targetFor Class 0.5 meters, target ~0.15% or better in upper zone
Working methodReference system comparison at selected flow points
SYSTEM ELEMENTS
Typical components
These elements are based on the brochure concept and are finalized project-by-project.
Controlled gas/air source
Reference gas meter
Pressure/differential pressure measurement
Temperature measurement
Test software