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For continuous analysis of oxygen (O2), methane (CH4), and/or carbon dioxide (CO2) in recovered gases from landfill sites.

Cabinet: NEMA 4 cabinet with Hazardous Area Purge System; available for Class 1 Div1 & Div2 hazardous areas

Unit of Measure


Method of Detection

N/A Long life electrochemical O2 sensor, field-cleanable infrared CH4 & CO2 detector

Ranges Available

N/A 0-25.0% O2; any range between 0-50.0% and 0-100.0% CH4, CO2


N/A 0.1% on CO2, O2, & CH4

Accuracy & Repeatability

N/A ±1% of full scale


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 120°F (4 to 48°C), Lower temperatures (-5°F, -20°C) with Cold Weather Package


N/A ±1% of full scale for each gas measured

Size & Weight

N/A 24" H x 20" W x 10" D @ 90 lbs (61 x 51 x 25 cm @ 20 kg) Physical data may vary depending on options required


N/A 115 VAC, 60 Hz 220 VAC, 50 Hz

Output Options

N/A 4-20 mA into 500 ohms non-isolated standard Isolated 4-20 mA, RS232, RS485, MODBUS, Ethernet outputs


N/A High O2, high CO2, low CH4, low flow; SPDT relays with 10A contacts

Analyzer Type

N/A Landfill Gas Analyzer

Other Analysis Options

N/A BTU - BTU readout, range 0-1000 BTU H1 - H2S, range 0 - 200 PPM H2 - H2S, range 200 - 5000 PPM H3 - H2S, range 1000 - 10000 PPM (if no CO2 in sample) H4 - H2S, range 1000 - 10000 PPM (if CO2 is in sample)

Hazardous Area Rating Options

N/A Class 1, Division 2 Group BCD



    For continuous analysis of oxygen (O2), methane (CH4), and/or carbon dioxide (CO2) in recovered gases from landfill and biogas sites.



  • Easy to use manual potentiometer calibration with LCD digital displays for each gas
  • Temperature controlled sensors to reduce drift due to ambient temperature swings
  • Long life electrochemical O2 sensor
  • Modular, field-cleanable infrared CO2/CH4 detector
  • Cabinet positive-pressure kit to minimize corrosive effects of hydrogen sulfide (H2S) on cabinet electronics & sensors
  • Built in sample pump, pre-filter, filters, and flow meter
  • Automatic moisture removal without the use of cooling water, compressed air or failure-prone thermal-electric elements
  • Vacuum gauge and valve to allow user to measure and minimize vacuum effects if unit is vented back to blower
  • Rugged NEMA4 (IP65) enclosure
  • 4 - 20 mA outputs for each gas
  • Low flow alarm & relays



  • Gas hi/low alarms with relay contacts
  • Isolated analog, RS232, RS485, MODBUS, and Ethernet outputs available
  • Class 1 Division 2 Group BCD rated purge kit for use in hazardous areas
  • Cold weather package for operation to -20°C (-5°F)
  • Solid-state cabinet coolers that do not require instrument air



  • Ambient air for O2 span and CO2 & CH4 zero
  • Analyzed calibration gas of CH4 in nitrogen with a representative balance of CO2 and N2 for CO2 & CH4 span and O2 zero

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