Smart Thermal Industrial Gas Meter

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 specifications

Measurement 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.
 

Type	JGM10S-G	JGM16S-G	JGM25S-G
Meter Size	G10	G16	G25
Measuring Range	(0.1~16) m3/h	(0.16~25) m3/h	(0.25~40) m3/h
Communications	GPRS / Zigbee / wM-BUS
Standard temperature for volume output	15ºC (Other standard temperature on request )
Standard pressure for volume output	1013.25mbar
Accuracy class	1.5
Measurement resolution	0.1 L (0.0001 m3)
Measuringaccuracy	Qmin≤Q<Qt, -3%≤E≤+3% Qt≤Q≤Qmax, -1.5%≤E≤+1.5%
Operating temperature range	-25ºC to 55ºC
Max. operating pressure	50bar (Valve operation up to 0.15bar )
Max. pressure drop	< 2.5 mbar at Qmax
Ingress protection	IP65
ATEX	EX II 3C Ex ic IIA T3 Gc (Zone 2)
Measured gas type	2nd Family Group H and L  (EN 437)
Valve	Compliancy with EN16314
Maximum leakage for the valve	0.001 m3/h at 0.05bar
Display	Matrix LCD ( with backlight)
Display resolution	9 data bits, including 4 decimal places
Battery Life	≥15 years