High-tech integrative product
Uses advanced wireless transmission technology
Through microelectronic control circuits, it converts pulse signals of traditional mechanical meter into electrical signals
Then metering data is transmitted to background platform through GPRS network automatically, or it can be collected by hand-held wireless unit from outside of houses and after that downloaded to computer through USB port
Applied to metering of gas volume flowing across gas pipe and meter reading from outdoor or through remote transcription

Structure and working theory:
Inside counter of gas meter (mechanical part), there is one magnet embedded under wheel pointer for 0.01m3 of gas and two reed switches beside each side of wheel
Each time pointer goes circle, one group of two pulses is generated to represent 0.01m3 of gas being calculated
Pulses are converted to digital signals and recorded as metering data based on pre-set program
Then metering data can be transmitted to concentrator or hand-held unit

Main features:
Mechanical performance complies with GB/T69681997 diaphragm gas meter national standard level B
Applicable gas medium: Natural gas, liquefied petroleum gas, made coal gas and marsh gas
Specifications:
Central frequency: 470MHz
Battery: 3.6V/3.3Ah disposable lithium battery or four alkali batteries number 5
Modulation: FSK
Bandwidth: ≤ 200KHz
Power consumption: Less than 30uA
Transmit power: ≤ 50mW
Transmit distance: >200m (open field)

Output power: 50mW
Metering level: B
Receiver sensitivity: -110dbm
Transmission distance: 200m (out side)
Applicable environment:
Temperature: -10 to 45° C
Relative humidity: ≤ 95%;
Atmospheric pressure 86 to 106kPa
Dimensions: 224 x 205 x 169mm