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Power off valve
Replaceable battery power supply mode, with power-off and valve closing function.
Power undervoltage protection
When the working voltage of the gas meter drops to the design undervoltage value, there should be a prompt. When the power supply voltage continues to drop to the design minimum working voltage, the valve should be able to be closed without loss of data in the meter.
Valve opening protection
The valve opening action shall be completed by on-site manual intervention, and the valve can be opened only by manually pressing the key. In addition, long press the key (more than 3 seconds) to forcibly wake up the gas meter online, accompanied by sound prompt.
Meter reading function
The gas meter shall have regular automatic data reporting function and key active reporting function.
control function
The gas meter shall have the function of receiving valve opening authorization and executing valve closing command.
Recharge function
It can be recharged at the gas meter end in the form of card free prepayment.
Billing function
Both the gas meter end and the management system end have the billing function, and the data in the management system shall prevail.
Price adjustment function
It can realize gas price adjustment and meet the requirements of stepped gas price.
Data freezing function
It can automatically save the accumulated quantity information at zero point every day and save the data of the last 60 days. Keep monthly gas consumption information
Reading and writing gas meter clock
The current clock of the gas meter can be read and the gas meter clock can be modified.
Long term unused cut-off
Under normal conditions of use, when the gas meter does not detect the flow within the time stated by the manufacturer (up to 30 days, settable), the gas shall be cut off.
Abnormal state recording function
The gas meter has the function of recording abnormal operation status.
Flow overload cut-off alarm function
Under normal use conditions, when the flow of circulating gas meter exceeds 1.2 times the maximum flow of gas meter, the gas meter shall cut off the gas and give an alarm within 120s.
Micro flow leakage cut-off alarm function
Under normal use conditions, when the continuous flow time of gas at a flow rate less than twice the starting flow reaches the set value declared by the manufacturer (up to 10d), the gas meter shall cut off the gas and give an alarm.
Second channel communication function
Under normal use conditions, in addition to the control of the gas meter by the management system, the handheld device can also be used to recharge and valve control the gas meter on site.
