The Nova 920 Series analyzers have been designed for monitoring recovered and processed gases from biogas installations. This equipment continuously removes moisture from the wet sample gas without the need for cooling water, compressed air, or failure-prone thermoelectric elements.
The 920 Series comes complete with pre-filter, sample pump, flow meter, continuous moisture removal system, long-life O2 sensor, infrared CO2/CH4 detector, low flow sensor, alarm relay contacts, and 4-20mA outputsmore
The 920 Series comes complete with pre-filter, sample pump, flow meter, continuous moisture removal system, long-life O2 sensor, infrared CO2/CH4 detector, low flow sensor, alarm relay contacts, and 4-20mA outputsmore
The Nova 920 Series analyzers have been designed for monitoring recovered and processed gases from biogas installations. This equipment continuously removes moisture from the wet sample gas without the need for cooling water, compressed air, or failure-prone thermoelectric elements.
The 920 Series comes complete with pre-filter, sample pump, flow meter, continuous moisture removal system, long-life O2 sensor, infrared CO2/CH4 detector, low flow sensor, alarm relay contacts, and 4-20mA outputs for each gas measured. Sensors / detectors are mounted in an internal dedicated enclosure which is heated and temperature controlled to reduce drift due to ambient temperature swings. The internal sensor enclosure is removable to allow quick field change of sensors. The infrared detector can be cleaned in the field if necessary by the on-site technician.
On all models with Autocalibration, all calibration functions are controlled through the display rather than through manual controls. The operator only has to input the calibration frequency and leave calibration gas cylinder connected to the analyzer - the rest is automatic. Diagnostics and troubleshooting information are also included in the display interface. This assists operators to quickly determine the cause of an alarm and get the analyzer back on line.
Models
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The 920 Series comes complete with pre-filter, sample pump, flow meter, continuous moisture removal system, long-life O2 sensor, infrared CO2/CH4 detector, low flow sensor, alarm relay contacts, and 4-20mA outputs for each gas measured. Sensors / detectors are mounted in an internal dedicated enclosure which is heated and temperature controlled to reduce drift due to ambient temperature swings. The internal sensor enclosure is removable to allow quick field change of sensors. The infrared detector can be cleaned in the field if necessary by the on-site technician.
On all models with Autocalibration, all calibration functions are controlled through the display rather than through manual controls. The operator only has to input the calibration frequency and leave calibration gas cylinder connected to the analyzer - the rest is automatic. Diagnostics and troubleshooting information are also included in the display interface. This assists operators to quickly determine the cause of an alarm and get the analyzer back on line.
Models
- 920 - O2
- 921 - CH4
- 922 - O2 and CH4
- 923 - CO2 and CH4
- 924 - O2, CH4, and CO2
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Unit of Measure
Specifications
Method of Detection |
N/A O2 and H2S by electrochemical sensor, CH4 & CO2 by infrared detector |
Ranges Available |
N/A 0-25.0% O2; any range between 0-50.0% to 0-100.0% CH4, CO2; 0-200 to 0-2,500 PPM H2S; 0-1000 BTU |
Resolution |
N/A 0.1% on CO2, O2, & CH4, 1 PPM H2S, 1 BTU |
Accuracy & Repeatability |
N/A ±1% of full scale for O2 / CO2 / CH4 |
Drift |
N/A Less than 2% of full scale per month |
Response Time (T-90) |
N/A Less than 30 seconds not including sample line delay |
Ambient Temperature Range |
N/A 40 to 104°F (4 to 40°C). Optional: -20°C to 55°C (-4°F to 131°F) with Outdoor Pkgs. |
Linearity |
N/A ±1% of full scale for each gas measured |
Size & Weight |
N/A Approx. 24" H x 24" W x 10" D @ 90 lbs (61 x 61 x 25 cm @ 41 kg) Physical data may vary depending on options required |
Power |
N/A 115 VAC 60 Hz (220 VAC 50 Hz available) |
Output Options |
N/A Isolated 4-20 mA standard RS232, RS485, MODBUS®, Ethernet outputs optional |
Alarms |
N/A Available: High O2, high CO2, low CH4, low flow; SPDT relays with 10A contacts |
Analyzer Type |
N/A Landfill Gas Analyzer |
Primary Gas(es) to be Measured |
N/A O2 / CO2 / CH4 / H2S |
Hazardous Area Rating Options |
N/A Class 1 Div 1 or Class 2 Div 2, using purge system General Purpose Non-Hazardous Areas |
Applications
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N/A For continuous analysis of oxygen (O2), methane (CH4), and/or carbon dioxide (CO2) in recovered gases from biogas applications. Hydrogen sulfide (H2S) readout optional. |
Features
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N/A
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