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Model 202 Infrared Analyzer for LEL, Hydrocarbons, CH4, CO, CO2

Product information

  • The Model 202 is a low cost continuous IR Analyzer. It has an optional 4-20 mA output, a single programmable setpoint, larger pump & an industrial NEMA 4 enclosure.
  • This 202 has the choice of one or more CH4, CO2, CO, N2O or, refrigerant gas sensor, Operator's Manual, configuration software and RS232 cable.
Model 202 Infrared Analyzer for LEL, Hydrocarbons, CH4, CO, CO2


Species measured

CH4, CO2, CO, N2O or, refrigerant gases


single or multiple - CH4, CO2, CO, N2O or, refrigerant gases


+/- 2% of reading

Response time

<20 sec. (to 90%) response

Sample flow rate

> 0.5 LPM

Span Drift

<2% over 24 hours


CH4-0-100% LEL; 0-100% v/v
CO2-0-5%; 0-100% v/v
CO-0-10%; 0-100%
NO- 0-1,000 ppm; 0-100%
Refrigerant gases

Linear Range

See range.

Power consumption

< 1.5 watt maximum


90-220 VAC or 24 VDC


6.75'' W x1 3/8''H x 6 3/4''D


7.4 pounds


CH4, O2 or CO2 Referred

Instrument operating conditions

5-40 degrees C, 0-95% RH (non-condensing)


Single piece construction

The single piece construction NEMA 4 enclosure constructed of fiberglass is waterproof, very rugged and durable.

Ease of calibration

The two point calibration for the PID uses an electronic zero (no zero gas needed) and a span gas. The time to calibrate is about 10 seconds. The Cal button is located on the main menu for ease of use. The FID requires zero air and span gas for calibration.


Our 2 line by 16 character display is backlit. The upper display provides the concentration and the bottom display provides the sensor, units, alarm and logging mode. For multisensor units, a 3 readout LED is used.


Our 16 bit ADC provides a resolution of 1 part in 64,000 and our signal algorithm minimizes noise by signal averaging in the msec range.

Programmable Voltage/current output

0-1VDC/4-20 mA.

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