- Product Details
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Quick Details
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Pressure Absorption:
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250-375Pa
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Battery Life:
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10 years
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Communication Type:
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NB-IoT, GPRS, Sigfox, LoRaWAN
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Max. Pressure:
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≤30kPa
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Applicable gas category:
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Air, natural gas
Quick Details
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Type:
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Ultrasonic flow meters
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Place of Origin:
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Zhejiang, China
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Brand Name:
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Goldcard
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Pressure Absorption:
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250-375Pa
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Battery Life:
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10 years
-
Communication Type:
-
NB-IoT, GPRS, Sigfox, LoRaWAN
-
Max. Pressure:
-
≤30kPa
-
Applicable gas category:
-
Air, natural gas
1.Features:
Metering Advantages
l Smaller & Lighter: smaller and lighter than diaphragm meter under the same type.
l Ultra-High Sensitivity: subtle gas flow can be detected.
l Wide Range Ratio: G4W can be up to 375:1, G40W can be up to 260:1
l High Reliability: no moving parts, no losses of measurement accuracy in long term operation.
l Strong Anti-Interference Ability: digital metering signal output, undisturbed by magnetic field.
l Temperature&Pressure Compensation: built-in temperature&pressure sensor, outputting cumulative volume under STP (Standard Temperature and Pressure).
Gas Safety
l Over Flow Detection: meter will close valve automatically at over flow rate to prevent pipe broken.
l Reverse Flow Detection: when detects reverse gas flow, meter will close valve automatically in case of meter installed wrongly.
l Continuous Flow Detection: when detects continuous flow, meter will close valve automatically in case of forgetting to turn off the gas appliance and to prevent pipe leakage.
l High Temperature Detection: when detects gas temperature above the high temperature alarm threshold, meter will close the valve automatically and report to the system in case of meter in fire environment.
l Air Ingress Detection: when detects air ingress, meter will close the valve automatically and report to the system in case of illegal disassembling from pipe.
l Water Ingress Detection: when detects water ingress, the valve will close automatically to ensure pipe network safety.
l Meter Disassembling Detection: when detects battery cover opened or controller disassembled, meter will record a log and report to the system.
2.Technical Parameters:
|
Type |
G1.6 |
G2.5 |
G4 |
G4W |
G6 |
G10 |
G10W |
G16 |
G16W |
G25 |
G40 |
G40W |
|
|
Q max (m 3 /h) |
2.5 |
4 |
6 |
6 |
10 |
16 |
16 |
25 |
25 |
40 |
65 |
65 |
|
|
Q min (m 3 /h) |
0.016 |
0.025 |
0.04 |
0.016 |
0.06 |
0.1 |
0.06 |
0.16 |
0.1 |
0.25 |
0.4 |
0.25 |
|
|
Accuracy Class |
1.5 |
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MPE |
Q min ≤ Q <Q t : -3%≤ E ≤+3% ; Q t ≤ Q ≤Q max : -1.5%≤ E ≤+1.5% |
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Pressure Absorption (Pa) |
≤250 |
≤375 |
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Max Working Pressure (kPa) |
50 |
50 |
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Working Temperature ( ℃ ) |
-25 ~ +55 |
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Ingress Protection Level |
IP65 |
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Communication Mode |
NB-IoT/GPRS/Sigfox/LoRaWAN |
NB-IoT/GPRS |
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Valve Lifetime (time) |
≥ 10000* |
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Battery Life *(year) |
≥ 10 |
≥ 10 |
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3. Smart Gas Charge System
