Smart Thermal Gas Meter-Domesticg1.6/2.5/4/6

Main Features
Standard volume output, No additional temperature and pressure compensation needed
Working condition volume output, based on real-time temperature and setting pressure value
No moving components, long-term stability
Compact design, smaller size to install easily
Resistance to 120ºC ambient temperature
Dynamic multi-tariff
Remote valve operation
Remote upgradeable firmware
Field swappable battery
Easy operation and maintenance through advanced 3 touch-button human-machine interface.
Kinds of communications module are available for various markets
Design in accordance to smart metering equipment technical specificationsMeasurement Principle
The measurement principle is based on a MEMS "Micro Thermal Flow Sensing". The Fig 1 has shown that there is a micro-heating element and two temperature sensors are placed around it. The temperature difference between the two sensors will be created when the flow rate increases and it is proportional to the mass flow rate.
TypeJGM1.6S-GJGM2.5S-GJGM4S-RJGM6S-RG1.6G2.5G4G6Measuring range(0.016~2.5) m3/h(0.025~4) m3/h(0.04~6) m3/h(0.06~10) m3/hStandard Temperature for Volume Output15ºC (Other standard temperature on request )Standard Pressure for Volume Output1013.25mbarAccuracy Class1.5Measuring AccuracyQmin≤Q<Qt, -3%≤E≤+3%
Qt≤Q≤Qmax, -1.5%≤E≤+1.5%Measurement Resolution0.1LOperating Temperature Range-25ºC to 55ºCMax. Operating Pressure0.5bar (Valve operation up to 0.1bar )Max. Pressure Drop< 2mbar at QmaxIngress ProtectionIP65ATEXEX II 3C Exic IIA T3 Gc (Zone 2)Gas application2nd Family Group H and L (EN 437)ValveCompliancy with EN16314CommunicationsGPRS / Zigbee / wM-BUSDisplayMatrix LCD ( with backlight)Battery Life≥15 years