Carbon Dioxide Monitor 0-50,000ppm

Carbon Dioxide Monitor 0-50,000ppm

Item #: 99174 (IN-STOCK)


Product Summary

PureAire’s Carbon Dioxide Monitor is designed for use in areas where carbon dioxide is used, stored, may accumulate, or is present during production processes such as those that take place inside breweries. This monitor is ideal for use in environments including, but not limited to, breweries and bottling plants, laboratories, universities, pharmaceutical manufacturing facilities, and agricultural locations. PureAire’s CO2 monitor continuously measures the air quality inside bars and restaurants, schools, and office buildings. The monitor is built with a long-life sensor that will last 10+ years in a normal environment.

  • No maintenance, long-life CO2 sensor
  • Self-calibrating CO2 sensor
  • Local backlit concentration display
  • Built-in audible horn
  • Built-in visual LED alarm indicators
  • No drift due to environmental or temperature changes
  • 3-year warranty
  • 24V DC Power supply included (99174)
  • International Power supply included (99191)

PureAire’s Carbon Dioxide Monitor provides continuous monitoring of carbon dioxide. This monitor is ideal for use in spaces where carbon CO2 concentrations could pose a health hazard.

Our Carbon Dioxide Monitor includes an NDIR sensor cell to reliably measure CO2 levels. The monitor will remain accurate over a wide range of temperature (0-50°Celsius) and humidity (0-95%RH) levels, as well as changes in barometric pressure. While some CO2 monitors sold by our competitors require quarterly calibration and periodic maintenance, PureAire’s Carbon Dioxide Monitor needs no maintenance or calibration once installed.

Sampling Method & Range Diffusion 0-50,000ppm
Accuracy ±300 ppm, ± 3% of measured value
Operating Temperature -0 to + 50° C
Display ¾” backlit LCD digital display
Sensor Type Non-dispersive infrared (NDIR)
Alarm indicators Built-in Audible 90dB horn, LED alarm
Signal Outputs Two user-adjustable Alarm relays. Relays are rated 2 amp 24VDC / 24VAC
Analog Output Analog 4-20mA output (Active)
Power Requirements 24VDC 350mA
Dimensions 6.5 (W) x 4.5 (H) x 3.25 (D) inches; (165.1 mm x 114.3 mm x 82.5 mm)
Weight 1.6 lbs. (.8 kg)
Enclosure Polycarbonate
Required calibration None when Auto Calibration function is activated
Country of Origin USA
Harmonized Tariff Code 8531.10.0045
Additional O2 Monitor Accessories List Price
8 Channel Controller $3,355.00 US (P/N # 99196)
Horn and Strobe  $190.00 US (P/N # 42002)
Remote Display $435.00 US (P/N # 99193)

No Calibration Required

Unlike other carbon dioxide monitors, PureAire’s CO2 Monitor does not require quarterly calibration. On a weekly basis, the monitor recalibrates itself to the ambient CO2 level for reliable performance. The monitor needs no adjustments or monthly maintenance once it is installed, for truly maintenance-free carbon dioxide monitoring.

Plug & Play Installation

PureAire’s CO2 Monitor is built with plug-and-play simplicity. The monitor arrives ready to work right out of the box. All that is required is to unpack the monitor, secure it to a wall or other flat surface, plug it in, and power it on. After a brief warm-up period, the monitor will begin measuring carbon dioxide levels. Once the installation is complete, PureAire’s CO2 monitor will continuously track carbon dioxide levels for 10+ years. Our bumper-to-bumper warranty makes PureAire’s CO2 Monitor the last monitor you’ll ever need to purchase.

PureAire’s Carbon Dioxide Applications

PureAire’s CO2 Monitor is ideal for a wide range of applications such as restaurants, fast food outlets, bars, and anywhere the CO2 is used to dispense carbonated beverages. Additionally, the monitor is well suited for use in agricultural grow rooms, laboratories, research facilities, hospitals, schools, office buildings, or in any location where carbon dioxide may accumulate. Air quality measurements are taken every two seconds and CO2 levels are visible on the monitor’s easy-to-read screen. PureAire’s CO2 Monitor will remain accurate and will not drift or lose sensitivity due to changes in weather, barometric pressure, or temperatures.

CO2 Monitor Control Features

PureAire’s CO2 Monitor comes with two user-selectable relays. The relays may be used to connect to on-off valves, which control CO2 injection and simultaneously activate alarms when carbon dioxide levels reach an OSHA action threshold. PureAire’s CO2 features a local display, safety alarms, and a built-in CPU.

Carbon Dioxide 0-50,000ppm Product Literature 

99174 Carbon Dioxide 0-50,000ppm Manual

Carbon Dioxide Safety


Remote Digital Display 99193 – 50,000 ppm

Horn/strobe 24VDC Red

horn and strobe



8-Channel Controller for Oxygen, Carbon Dioxide, or Toxic/Combustible Gas Monitors