Carbon Monoxide (CO) Meter


Extech CO15: Carbon Monoxide (CO) Meter

Carbon Monoxide Meter with Adjustable CO Warning Level and Backlit Display

Check CO levels up to 999ppm with the push of a button using Model CO15. An audible alarm indicator will continuously beep starting at 25ppm (preset warning level – value can be adjusted) and the display will flash until the CO level goes down to normal range. A backlight on the display can be used for low light areas. The meter comes complete with batteries, wrist strap, and pouch.

  • Dual LCD simultaneously displays Carbon Monoxide (CO) level and maximum CO reading taken from when the meter was powered on
  • Long life electrochemical sensor
  • Adjustable CO warning level at 25, 30, 35, 45, 50, 70, 100 and 200ppm (alarm is preset to 25ppm)
  • Audible alarm when CO level reaches the warning set point level
  • Choose from 3 calibration points: 0 (preset), 100, and 500ppm
  • Backlit display feature for easy viewing in dimly lit areas
  • Auto power off after 15 minutes
  • Low battery indicator
  • Complete with 3 AAA batteries, wrist strap and pouch
Specifications Range Resolution Basic Accuracy
Carbon Monoxide (CO) 0 to 999ppm 1ppm ±20% @ 0 to 100ppm;
±15% @ 100 to 500ppm
Dimensions 6.9×1.9×1.1″ (175x47x28mm)
Weight 5.6oz (158.8g)

Extech CO30: CO (Carbon Monoxide) Monitor

Indoor Compact CO Monitor with Tilt Leg Stand

The CO30 is a CO Monitor which displays Carbon Monoxide (CO) concentration, Air Temperature, and Relative Humidity. The CO30 features a programmable audible alarm with a high decibel beeper, sounds when CO concentration rises to unsafe levels. Unit can be wall mounted or used on a desktop close to areas of concern. Other features include a visible bright tri-colored (green, yellow, red) LED alarm indicator, a “ZERO” re-calibration function, manual temperature and relative humidity compensation (adjustable), CO calibration function in fresh air, and a low battery indicator. Complete with universal AC adaptor (including US, EU, UK, and AU plugs), and 4 AAA batteries.

  • Alternately displays Carbon Monoxide (CO) concentration, Air Temperature, and Relative Humidity readings (cycles approximately every 6 seconds)
  • Visible bright tri-colored (green, yellow, red) LED alarm indicator
  • Adjustable audible alarm for readings exceeding one of the selected ranges: 25ppm, 30ppm, 35ppm, 50ppm, 100ppm or 200ppm
  • ZERO Re-Calibration function
  • Manual Temperature and Relative Humidity Compensation (adjustable)
  • CO Calibration function in fresh air
  • Low battery indicator
  • Complete with universal AC adaptor (including US, EU, UK, and AU plugs), and 4 AAA batteries
Specifications Range Resolution Basic Accuracy
Carbon Monoxide (CO) 0 to 999ppm 1ppm ±5% of rdg or ±10ppm
Temperature (Air) 32 to 122°F (0 to 50°C) 0.1°F/°C ±2°F/1°C
Relative Humidity 20 to 90%RH 1%RH ±5%RH @ 25°C
Dimensions / Weight 4.4×4.3×2.1″ (113x108x53mm) / 5.6oz (159g)