GSG7666 is a high-precision diaphragm gas meter designed specifically for various gas media and is compliant with STS standard. With strong corrosion resistance as one main feature, the meter is designed and manufactured strictly according to relative international standards. It is equipped with a Customer Interface Unit (CIU) installed inside the user’s home for functions of balance checking, historic record search & credit recharging.

Main Features

·Battery life of 10 years
·Data storage of 10 years
·Optional valve leakage warning
·Low power usage & low failure rate

·Optional LoRaWAN/NB-IOT/GPRS/3G communication modes
·Warning of low credit & low battery
·Meter body with MID certification by CMI(Czech Metrology Institute)
·Recharging credit by inputting 20-digit token on CIU

Metrological Parameters

Type	G1.6	G2.5	G4
Nominal flow rate - m³/h	1.6	2.5	4
Maximum flow rate - m³/h	2.5	44	6
Minimum flow rate - m³/h	0.016	0.025	0.040
Cyclic volume - dm³	0.7	1.2	2
Operation pressure - KPa	0.5-50KPa
Maximum permissible error - %	CQmin<Q<0.1Qmax:±3; 0.1Qmin<Q<0.1Qmax:±1.5
Compliant standard	OIMLR137(2012)/EN1359:1998/A1:2006
Pressure loss - kPa	<200
Maximum reading - m³	99999.9
Weight	2.4kg