Main Features
- Prepaid and using control
- Meet STS protocol standards
- Credit accumulation
- Presentation of gas status, credit accumulation and surplus credit
- Data protection
- Voltage checking and low-voltage warning
- Valve automatic closing when in low voltage or out of power
- Reminding insufficiency of gas
- Magnet attack protection
NFC/STS prepaid gas meter
NFC/STS prepaid gas meter deemed as the smart measuring instrument based on the diaphragm gas meter, with installing controlling valves, electrical controls and NFC card operation system, which remains metering accuracy of mechanic meters and at the same time realizes automated management. The NFC/STS prepaid gas meter, with compact structure and advanced technology, is convenient to operate and reliable in usage.
NFC/STS prepaid gas meter is a main device, which helps city gas companies and gas users realize the scientific and automated management of supply and use. The NFC card has prepaid function and the credit and surplus credit can be displayed through the LCD. NFC/STS prepaid gas meter is applicable for the metering of artificial coal gas, natural gas, and liquefied petroleum gas.
The product meets the requirements of the EN1359:1998/A1:2006 and OIML R137( edition 2012) standards.
Technical parameters
Items | Unit | G1.6 | G2.5 | G4 | |
Nominal flow-rate | m3/h | 1.6 | 2.5 | 4.0 | |
Max flow-rate(Qmax) | m3/h | 2.5 | 4.0 | 6.0 | |
Min flow-rate(Qmin) | m3/h | 0.016 | 0.025 | 0.04 | |
Cyclic volume | dm3 | 1.2 | |||
Accuracy | Class 1.5 | ||||
Casing materials | Steel or Aluminum | ||||
Approvals | EN1359 & EN16314 | ||||
Total pressure loss | Pa | ≤250 | |||
Max working pressure | bar | 0.5 | |||
Error | Qmin≤Q<0.1Qmax | % | ±3 | ||
0.1Qmax≤Q≤Qmax | % | ±1.5 | |||
Display range min. | dm3 | 0.2 | |||
Display range max. | m3 | 99999.999 | |||
Operation temperature | ℃ | -25 to +55 | |||
NFC card service life | Frequency | ≥10000 | |||
Valve life | Frequency | ≥10000 | |||
Battery type | V | Lithium battery: DC 3.6V (1pc ) | |||
Alkaline battery: DC6.0V (4 pcs 5# ) | |||||
Static working current | μA | ≤10 | |||
Data acquisition | Pulse ( Reed or Hall sampling counting ) | ||||
Explosion proof grade | EXib IIBT3 Gb | ||||
Degree of protection | IP65 | ||||
Sizes
Model | H | L | D | B | S | Weight |
G1.6/G2.5/G4 | 224mm | 195mm | 67mm | 169mm | 130（110）mm | 2.20Kgs |
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