This product has been retired.


Dwyer Instruments

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  • Ranges:
    • CO: 0 to 1000 ppm, overflow 2000 ppm
    • CO2: 200 to 4000 ppm, overflow 9999 ppm.
  • Resolution: 1 ppm
  • Accuracy:
    • CO: ±5 ppm<100 ppm; ±5%>100 ppm; ±10%>1000 ppm
    • CO2: ±20 ppm<400 ppm; ±5%<4000 ppm; ±10%>4000 ppm
  • Dual LCD display
  • CE approved

What's in the Box

  • Batteries
  • 120V power supply
  • Protective rubber boot with integral magnet
  • Sampling probe
  • Canvas carrying case

The Dwyer 1205B Gas Analyzer accurately measures the concentration of carbon monoxide (CO) and carbon dioxide (CO2) in a duct or space. The Gas Analyzer displays the measurement on a two line digital LCD display with backlight. The unit's memory stores up to 255 sets of readings that are logged manually or auto-logged with 1 to 10 minute intervals. Besides measurement recording, Model 1205B can provide a summary of average and maximum levels reached during recording. Results then can be printed via an optional infrared printer. Model 1205B includes batteries, 120V power supply, protective rubber boot with integral magnet, sampling probe, and a canvas carrying case.

Dwyer 1205B-US Power Adapter
120VAC power adapter for Dwyer 1205B CO/CO2 analyzer
Dwyer 1205B-PR Replacement Probe
Replacement probe for Dwyer 1205B CO/CO2 analyzer


This product can be used in the following applications: