NOVA - Model 913C -Continuous Analyzer for Landfill Sites - Automatic Calibration - O2, CO2 and CH4

The internal sensor enclusure is removable to allow quick field change of the sensors.  The infra-red detector can be cleaned in the field if necessary by the on-site technician.  Environmental management packages are available to allow operation of th analyzer outdoors in temperatures from -30 °C (-22 °F) to 70 °C (158 °F).

On the C models with Autocalibration, all calibration functions are controlled through the display rather than manual potentiometers. The operator only has to input the calibration frequency and leave calibration gas cylinders connected to the analyzer - the rest is automatic. Diagnostics and troubleshooting information are also included in the display interface of the C models. This assists operators to quickly determine the cause of an alarm and get the analyzer back on-line.

• Method of Detection : Electrochemical sensor for O2 , infrared detector for CH4 & CO2
• Ranges Available : 0-25.0% O2; any range between 0-50.0% and 0-100.0% CH4 and CO2
• Resolution : 0.1% on CO2, O2, & CH4
• Accuracy & Repeatability : ±1% of full scale
• Drift : Less than 2% of full scale per month
• Response Time (T-90) : Less than 30 seconds not including sample line delay
• Ambient Temperature Range : 40°F to 104°F (4°C to 40°C), Optional: -22°F to 158°F (-30°C to 70°C) with Outdoor Packages
• Linearity : ±1% of full scale for each gas measured
• Size & Weight : 24" H x 24" W x 10" D @ 90 lbs (61 x 61 x 25 cm @ 20 kg)
• Power : 115 VAC 60 Hz (220 VAC 50 Hz available)
• Output Options : Isolated 4-20 mA standardRS232, RS485, MODBUS®, Ethernet outputs optional
• Alarms : High O2, high CO2, low CH4, low flow; SPDT relays with 10A contacts
• Analyzer Type : Landfill Gas Analyzer
• Hazardous Area Rating Options : Class 1 Div 2 Class using purge kit systemFor H2 measurement - See 970 Series

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

A - BASE MODEL

• Easy to use manual potentiometer calibration with LCD digital displays for each gas
• Temperature controlled sensors for maximum stability
• Long life electrochemical O₂ sensor
• Infrared detector for reliable measurement of CO₂ and CH₄ (Models other than 910A or 910C). Detector may be cleaned in the field
• Stainless steel hard tubing and corrosion-resistant components for internal sample health
• Cabinet positive-pressure system to minimize the 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
• Back pressure regulator to allow user to measure and minimize vacuum effects if the unit is vented back to the blower
• Rugged NEMA4 (IP65) enclosure
• Isolated 4 - 20 mA outputs for each gas
• Low flow alarm & relays
  
  

C - AUTOCALIBRATION MODEL

• Same features as Base model, plus:
• Automatic analyzer calibration with full-color touch screen LCD display
• Diagnostic alarms with troubleshooting guidance in display
• `Cal Now` feature initiates full calibration with a single swipe of a magnetic wand

• H₂S & BTU readouts (see ranges and models)
• Gas hi/low alarms with relay contacts
• RS232, RS485, MODBUS® and Ethernet outputs (available on Model C only)
• Class 1 Division 2 Group BCD rated purge kit for use in hazardous areas
• Outdoor weather package for operation from -22°F to 158°F (-30°C to 70°C)
• O₂ measurement by paramagnetic detector

• Ambient air for O₂ span and CO₂ & CH₄ zero
• Analyzed calibration gas of CO₂ and CH₄ in nitrogen for CO₂ & CH₄ span and O₂ zero