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.
Features
- 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
Specifications:
| 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. |
Applications:
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.
