Some features of base table

The shell of the base meter and the body of the metering chamber are made of aluminum alloy by die casting, with anti-corrosion treatment on the surface, strong corrosion resistance, stable metering and long service life;
The internal transmission mechanism is made of high-strength corrosion-resistant engineering plastics, and the shaft parts are made of stainless steel. According to the characteristics of biogas and straw gas, it has good corrosion resistance;
The movement is equipped with an error curve adjusting mechanism to adjust the error curve slope of the gas meter, so as to improve the metering accuracy of the gas meter and reduce the error dispersion;
* wide measurement range (wide process). Due to the improvement of manufacturing accuracy, a gas meter of one specification can meet the measurement accuracy of gas meters of different specifications;
※ adopt in place detection and quick closing four wire motor valve with patented technology, with in place detection function, the on-off valve function is safe and reliable;
A complete stainless steel sealing ring shall be used for riveting connection after gluing between the upper and lower shells, and the gas meter can withstand the high pressure sealing test of 75kgpa;
* advanced technology, advanced tooling and equipment are adopted to ensure the assembly quality, and there are various structures and devices to prevent damage;
The reserved pulse output interface and alarm interface provide the possibility for remote meter reading and gas leakage alarm valve closing linkage in the future.

prepaid IC card gas meter features

* prepaid Qigong energy: realize the function of paying first and then using gas, and solve the problem of gas company charging and household meter reading;
※ residual volume prompt function: prompt the user to purchase gas and replace the battery in time when it is lower than the set value according to the residual gas volume and battery power;
Information upload function: all gas volume information, gas meter status and fault information of the gas meter can be uploaded to the gas purchasing software system through IC card, so that the meter reader can understand the gas meter information of the user's home without visiting the door;
* anti gas hoarding function: the limit of gas purchase can be set through the gas selling software system to prevent users from hoarding gas, so as to reduce the loss caused by gas price fluctuation of gas companies;
※ it is linked with the gas leakage alarm. When there is gas leakage and alarm, the gas meter will automatically cut off the built-in valve to prevent further gas leakage and improve the safety of gas use;
The gas metering sensor of the electric control part adopts the double sensor bridge design technology, double prevention and double counting, which is safe and reliable;
* dual mechanism of sensor counting coexists to avoid gas metering loss;
Anti magnetic interference function: when external magnetic field interference is detected, the gas meter will automatically close the valve and cut off the air supply;
※ sensor fault check and alarm function: when the sensor is interfered or the valve fails, the gas meter will prompt in the way of liquid crystal display and sound alarm;
* optional monthly cumulative gas consumption statistics function;
※ Fault self diagnosis function: the IC card intelligent gas meter has the self diagnosis function of fault or misoperation in the process of "card insertion operation" and "gas operation". When it is diagnosed that the gas meter has fault, close the valve and display the fault or misoperation problem on the LCD screen through the fault code type. The user can operate again according to the fault code prompt;
* the data access between IC card and meter is multi certified, with anti-high voltage static design, safe and reliable;
* ultra low power consumption, long battery life, up to more than 18 months, built-in super capacitor in the meter, to ensure that the valve can be closed for protection after the external battery is powered off;
The control module adopts three prevention treatment, with good safety and sealing, which can avoid the influence of water vapor and lampblack in the kitchen

technical parameters of IC card gas meter

Nominal flow	m³/h	1.6	2.5	4
Maximum flow	m³/h	2.5	4	6
Minimum flow	m³/h	0.016	0.025	0.04
Measurement level	level	1.5
Basic error limit	%	Qmin≤Q＜0.1Qmax time ±3 0.1Qmax≤Q≤Qmax time ±1.5
Maximum reading	m³	99999.999
Maximum working pressure	kPa	10
Total pressure loss	Pa	≤250
Tightness	kPa	No leakage within 3min under 20KPa pressure
Explosion proof standard		EXib IIBT3 Gb
Minimum reading of wheel	dm³	0.2
Service temperature	℃	-10～+50
Medium conditions		All kinds of gas, air, non corrosive gas
Inlet and outlet pipe thread	Mm	M30×2
Center distance between inlet and outlet pipes	Mm	130
Outline size	Mm	H220xW205xD161
weight	Kg	2.04
Power supply mode		4 alkaline batteries (external) + 1 lithium battery (internal)
working voltage	V	DC 5.0V～ 7.0V
Working current (average)	mA	≤90
Quiescent current	uA	≤20
Sampling method		Double reed
Valve reliability		No less than 10000 times of continuous switching
Valve closing time	S	＜0.5
Operating voltage range of valve	V	2.5~7.0
Battery life		Lithium battery with service life more than 10 years
Clock error	Minute / month	＜10
Degree of protection		IP65

Degree of protection

Product specifications	H	W	D	E	A	weight
Steel shell	224 mm	195 mm	67 mm	168mm	130 mm	2.2Kg
Aluminum shell	224 mm	215 mm	74 mm	175 mm	110 mm	2.1Kg