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The Nova 420 Series CO2 analyzers utilize a simple and reliable microprocessor-based non-dispersive infrared detector specific to CO2. The detector pulses an infrared beam of light through the sample tube, without the need for a mechanical chopper. In operation, the internal sample pump draws the sample gas through a filter, flow meter, and then on to the infrared detector. The detector output is digitally linearized and then displayed as percent CO2 on the digital meter. The output is also available as an analog or digital signal.


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

Specifications

Method of Detection

 N/A Single cell NDIR with no moving parts

Ranges Available

 N/A 420 - 0-1, 0-5, 0-10, 0-20, 0-30, 0-50, 0-100% CO2 420L - 0-5,000 PPM CO2 420L-LP - 0-500, 1000, 2000, 5000, 10000 PPM (may be available, check with NOVA)

Resolution

 N/A 1 or 10ppm on most ppm ranges; 0.1% on most % ranges

Accuracy & Repeatability

 N/A ±1-3% of full scale, depending on measurement range and application

Drift

 N/A Usually 2% of full scale per month or less, depending on range and application

Response Time (T-90)

 N/A Usually 20-30 seconds to 90% step change, depending on range and application

Ambient Temperature Range

 N/A 40 to 104°F (4 to 40°C). Optional: up to 130°F (55°C) with cabinet cooler

Linearity

 N/A Usually ±1.5% of full scale, depending on gas measured

Size & Weight

 N/A NEMA 4: 61H x 51W x 31D cm (24"H x 20"W x 12"D) (not including purge panel & vent)

Power

 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, USB serial outputs

Alarms

 N/A High and/or Low alarm contacts available, relay contacts SPDT 5A @ 220 VAC rating Low flow alarm

Analyzer Type

 N/A CO2 Gas Analyzer

Hazardous Area Rating Options

 N/A Class 1 Div 2 or Class 1 Div 1 Hazardous Area Ratings available

Applications

N/A Light-duty analyzers for applications or environments that are less intensive. For continuous analysis of carbon dioxide (CO2) in process gas streams using an infrared detector. Both percent and PPM analysis available.

Features

N/A

  • Detector is temperature-controlled or compensated for improved analytical stability
  • High ranges available (up to 100%)
  • Low ranges available (5,000 ppm)
  • Touch-screen display for gas readings
  • Built-in sample pump or pressure regulator
  • Non-isolated 4-20mA analog recorder output

Options

N/A

  • Hi/Low gas and low flow alarms available
  • Isolated analog, RS485 outputs available

Calibration

N/A

  • Easily zero checked on ambient air or nitrogen (N2)
  • Span using a known CO2 in nitrogen calibration gas.

Unique Applications

N/A The 420 Series analyzers are designed for detection of CO2 in non-corrosive gas streams. All Nova analyzers are built using proven technologies and techniques. If this product does not suit your application, please contact Nova. In many cases, we are able to build an analyzer specific to your needs.

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