Membrane gas meter

The NB-IoT Internet of Things membrane gas meter is based on the operator's narrow-band cellular network, with the membrane gas meter as the base table, the installation of electronic controller and NB communication module, the composition of the pre-paid function of the gas metering instrument.

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Membrane gas meter

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Product Description

Product introduction:
The NB-IoT Internet of Things membrane gas meter is based on the operator's narrow-band cellular network, with the membrane gas meter as the base table, the installation of electronic controller and NB communication module, the composition of the pre-paid function of the gas metering instrument.

Product features:
Data communication: NB-IoT network communication is used to report data on a daily basis.
Accurate billing: supports two prepaid methods: table end and background
Remote control: remote valve control, remote parameter setting, remote upgrade
Convenient payment: support WeChat, Alipay and other mobile payment platforms
Safe gas: with super flow rate, micro leakage, abnormal constant flow rate, loss of connection alarm, long time without gas protection
Anti-theft gas: it has mobile alarm function to effectively prevent theft of gas such as private modification and disassembly.

Technical advantages:
■ Safety function
It has the functions of abnormal flow monitoring (over flow rate, micro leakage, constant flow rate for a long time), loss of connection alarm, long-term no gas protection, anti disassembly, external alarm linkage, etc.
■ IP65 protection class
The electronic board adopts special spraying technology and the shell adopts labyrinth design.
■ Prepaid mode
Supports multiple billing modes such as table-side prepaid and system prepaid.
■ Differentiated product lines
Provide differentiated products for different user needs to achieve gas company pain points.

Technical parameters:

Base table	Unit	G1.6	G2.5	G4	G6	G10	G16	G25
nominal flow	m³/h	1.6	2.5	4	6	10	16	25
Maximum flow	m³/h	2.5	4	6	10	16	25	40
Minimum flow	m³/h	0.016	0.025	0.04	0.06	0.1	0.16	0.25
Accuracy class	Level	1.5
basic error limit	%	Qmin≤Q＜0.1Qmax时±3 0.1Qmax≤Q≤Qmax ± 1.5
Maximum Cumulative	m³	99999.999				999999.99
Maximum working pressure	kPa	15
Total pressure loss	Pa	≤ 250					≤ 375
Tightness	kPa	No leakage at 1.5 times the maximum working pressure
Explosion-proof standard		EXib IIBT3 Gb
Ambient temperature	℃	-10～ 40
Ambient humidity	%RH	≤ 93% RH
Medium condition		All kinds of gas, air, non-corrosive gas
Power supply mode		4 dry batteries
Battery life		Service life ≥ 1 year, easy to replace
Built-in lithium clock		Service life ≥ 10 years
Sampling mode		pulse sampling
Display mode		Mechanical display and liquid crystal display
Valve control		Support remote valve control, can realize different permission valve control, including common off valve, authority off valve
Valve reliability		The number of continuous switching shall not be less than 10000
Valve closing time	s	＜1
clock error	s/day	≤ ± 3
Protection level		IP65
Communication mode		NB-IOT, infrared
Daily meter reading success rate		≥ 99%
One-time meter reading success rate		≥ 98%
Data reading accuracy		≥ 99.9%
Service life		10 years
Data upload frequency		≥ 1 time/day, failure retransmission ≤ 3 times/day

Dimensional drawing

Model	A	B	C	D	E	F	G
G1.6/G2.5/G4	207	172	48	220	185	130	M30*2

Model	A	B	C	D	E	M
G6	160	276	256	192	164	G11/4
G10	200	327	314	219	189	G2
G16	240	374	354	240	212	G2
G25	300	437	438	287	261	M80*3