Sonic Nozzle Gas meter test bench G1.6-G4 is an automatic equipment to test diaphragm gas meter, the flow range 0.016m3/h～6m3/h, the method of standard device is sonic nozzle, following international standards OIML R137. The test bench can test flow rate Qmax, 0.2Qmax and Qmin of gas meter G1.6, G2.5 and G4. 

Specification

1. Accuracy : ≤0.5%, ≤0.3% (optional)

2. Tested meters: 12pcs, 

3. Flow stability: ≤0.1%

4. Manometer accuracy: ≤0.2%; 

thermometer accuracy: ≤0.5%; 

hygrometer: ≤3.5%

5. Working condition: 

environment temperature: 20℃±5℃

relevant humidity: 60%～70%

atmospheric pressure: 86kPa～106kPa