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Gas Flow Meter 2.0

Brand: AddGlobe, LLC.
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To capture gas flows away from the source of the leakage rate, measured by sampling at high speed, thus there is a dilution of the surrounding air. Accurate sample flow rate and natural gas concentration allow leak rates to have calculation. 

The instrument automatically compensates for the difference in gas content between the sample and the ambient air, thus ensuring an accurate leak rate calculation.

A small-sized optical sensor (form factor 20mm) with a wide temperature range of  -40 °C to +60 °C at a low cost measured the concentration of natural gas. 

The main difference from most optical sensors is the replacement of an incandescent micro-lamp emitter with a semiconductor LED emitter and a pyroelectric photodetector receiver with a photodiode receiver with an integrated spectral filter. This technique has improved reliability and significant reductions in sensor power consumption, which is essential in battery-powered systems.

To extend the accuracy of measurements on high amounts of leakage, we are using our proprietary patented technology, Displaced Oxygen Correction. 

The measuring system has an additional sensor that indicates the volumetric oxygen content. During system purging, the reading came checked with 20.9% O2. According to its corrected tasks, the natural gas content in the stream, thus the influences of high-order hydrocarbon impurities, was eliminated. At low gas concentrations in the sample, reducing the sampling rate to ensure higher measurement accuracy was now possible.

The sampler found installation in a case secured to the specially designed harness, leaving the operator’s hands free to use when climbing stairs and descending into sewers. There became no apparent use for the harness with the sampler. 

The sampler is controlled wirelessly using an Android phone (version 6.0 or higher) that displays technical information and supervises the Gas Flow Meter sampler. Reception distance up to 5 meters. GFM 2.0 has meager energy consumption allowing uninterrupted measurements for about 14-14 hours.
Features
  • Low-temperature TFT display
  • Rechargeable Li Pol battery for low-temperature operation;
  • The degree of protection of the enclosure shell is IP 54
  • Small size and weight.
  • The body of the device is made out of aluminum
  • The device has a block structure
  • The blocks are quickly-detachable and have IP68 level protection of the shell
  • For maintenance and repair, the blocks supplied get calibrated, which allows the
  • restoration of the device performance without special calibration gases
To capture gas flows away from the source of the leakage rate, measured by sampling at high speed, thus there is a dilution of the surrounding air. Accurate sample flow rate and natural gas concentration allow leak rates to have calculation. 

The instrument automatically compensates for the difference in gas content between the sample and the ambient air, thus ensuring an accurate leak rate calculation.

A small-sized optical sensor (form factor 20mm) with a wide temperature range of  -40 °C to +60 °C at a low cost measured the concentration of natural gas. 

The main difference from most optical sensors is the replacement of an incandescent micro-lamp emitter with a semiconductor LED emitter and a pyroelectric photodetector receiver with a photodiode receiver with an integrated spectral filter. This technique has improved reliability and significant reductions in sensor power consumption, which is essential in battery-powered systems.

To extend the accuracy of measurements on high amounts of leakage, we are using our proprietary patented technology, Displaced Oxygen Correction. 

The measuring system has an additional sensor that indicates the volumetric oxygen content. During system purging, the reading came checked with 20.9% O2. According to its corrected tasks, the natural gas content in the stream, thus the influences of high-order hydrocarbon impurities, was eliminated. At low gas concentrations in the sample, reducing the sampling rate to ensure higher measurement accuracy was now possible.

The sampler found installation in a case secured to the specially designed harness, leaving the operator’s hands free to use when climbing stairs and descending into sewers. There became no apparent use for the harness with the sampler. 

The sampler is controlled wirelessly using an Android phone (version 6.0 or higher) that displays technical information and supervises the Gas Flow Meter sampler. Reception distance up to 5 meters. GFM 2.0 has meager energy consumption allowing uninterrupted measurements for about 14-14 hours.
Features
  • Low-temperature TFT display
  • Rechargeable Li Pol battery for low-temperature operation;
  • The degree of protection of the enclosure shell is IP 54
  • Small size and weight.
  • The body of the device is made out of aluminum
  • The device has a block structure
  • The blocks are quickly-detachable and have IP68 level protection of the shell
  • For maintenance and repair, the blocks supplied get calibrated, which allows the
  • restoration of the device performance without special calibration gases
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Specifications

Brand

Display

  • Graphic TFT display

Control Buttons

  • On/Off

Connection

  • Bluetooth
  • USB

Estimated Values

  • Leakage concentration taking into account the background gas level Leak intensity

Measured Leakage Rate

  • 0.01SCFM to 12.36 SCFM
  • 1.0 to 350.0 l/min

Minimum Detectable Leak Rate

  • 0.008 SCFM
  • 0.15 l/min

Leak Rate Measurement Error

  • ±5% of reading

Temperature

  • Operational: -4 °F to 122 °F
  • Storage: -40 °F to 140 °F

Humidity

  • 5 to 95% RH (Non-condensing)

Sample Flow Rate

  • Maximum: 12.36 SCFM
  • Medium: 8.82 SCFM
  • Low: 5.29 SCFM

Natural Gas Sensor/Accuracy

  • Optical method Range from 0 to 100% methane by volume
  • Accuracy is ±5% of reading or 0.1% methane, whichever is greater

Battery

  • Type: Intrinsically Safe, low- temperature rechargeable LiPo
  • Rated voltage: 3.7 V
  • Capacity: 11.0 Ah
  • Charging time: Up to 10 hours
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