O2 Monitor – Model M60
The Model M60 is designed to monitor PPM and percent level O2concentrations in natural gas applications. An electro-chemical O2sensor is incorporated into the design of the instrument. The M60 can be included as an additional measurement with other Envent analyzers, or can be offered as a stand-alone analyzer with an integrated sample conditioning system.
- Electro-chemical sensor
- Dual alarm outputs
- Low power consumption
- Two Line LCD Display
- 4 to 20 mA output
- RS-232 and RS-485 configurable Modbus communications
|Enclosure||Class 1, Div 1 Groups C&D|
|Operating Principle||Electro-chemical sensor|
|Power||12-24 VDC Standard
120/240 VAC optional.
|Measurement Range||0-2000 ppm to 0-25%|
|Repeatability||2% of full scale (%) 5% of full scale (ppm)|
|Warm Up||Less than 10 minutes|
|Operating Temperature||10-50˚C (50 to 122 F)|
|Analog Output||Isolated 4-20 mA|
|Communications||Configurable Modbus RTU.|
|Alarm Outputs||2 solid state driver, 3 Amps max.|
|Optional Sample System||Inlet filter, pressure regulator, flow meter, calibration port.|
|Accuracy||2% of full scale.|
Oxygen in natural gas gathering pipelines sometimes need to be monitored to ensure streams do not exceed maximum allowed concentrations of oxygen. Common ranges are from 0 to 2,000 ppm and 0 to 25%. Vapour recovery systems where inlet compression pressures are sub-atmospheric, are susceptible to air infiltration and oxygen concentration monitoring serves as an early warning. Storage tank blanket gas and other head space applications frequently require oxygen monitoring for safety reasons.