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99174 CO2 Only Drawing
Carbon Dioxide Monitor 0-50,000ppm
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Carbon Dioxide Monitor 0-50,000ppm

Available Product Options. Please choose from the menu below | In stock

$1,205.00

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

CloudConnect

 

8-Channel Touch Screen Controller 

 

Continuous CO₂ Monitoring

Designed to detect unsafe CO₂ buildup in active workspaces.

Broad Application Fit

Useful in production, lab, and storage environments where CO₂ risk exists.

Safety-Focused Operation

Designed to support day-to-day visibility into CO₂ conditions.

Better Facility Coverage

Adds a dedicated safeguard where CO₂ accumulation is a known risk.

A CO₂ gas detector continuously measures carbon dioxide levels in the air to prevent dangerous exposure. Elevated CO₂ levels can cause dizziness, suffocation, or even death. Carbon dioxide monitors alert personnel before levels reach hazardous concentrations.

Carbon dioxide is colorless and odorless, so leaks or accumulation are not detectable by human senses. Detectors protect people and property in areas like laboratories, breweries, greenhouses, food storage facilities, and CO₂ fire suppression systems.

  • NDIR (Non-Dispersive Infrared): Most common; highly accurate, stable, and low maintenance. PureAire’s Carbon Dioxide Monitor includes an NDIR sensor cell to measure CO2 levels reliably. The Monitor will remain accurate over a wide range of temperature (0-50°Celsius) and humidity (0-95%RH) levels. PureAire’s Carbon Dioxide Monitor needs no maintenance or calibration once installed.
  • Electrochemical: Sometimes used for low-range monitoring, but less common for CO₂.
  • Food and beverage industry (breweries, wineries, bottling plants, bars, and restaurants).
  • Food processing and frozen food production facilities.
  • Laboratories, universities, pharmaceutical manufacturing, agricultural locations, schools, and office buildings.

The specific application will determine where best to install a PureAire CO2 Monitor. For example, bars and restaurants serving carbonated beverages should install a Monitor 12-18 inches off the floor in areas where compressed CO2 is stored or used.

For applications that require high concentrations of CO2, such as inside greenhouses and grow rooms, the Monitor may be mounted inside the room, with employees utilizing a remote display located on the outside for at-a-glance visibility.

To ensure safety, PureAire generally recommends installing one Monitor for approximately every 400 square feet of your facility’s space. However, since airflow can be unpredictable, we encourage you to contact PureAire for additional guidance specific to your needs.

  • 400–1,000 ppm: Normal indoor air; safe.
  • 1,000–5,000 ppm: May cause drowsiness or mild discomfort.
  • Above 5,000 ppm: Hazardous over long-term exposure; OSHA limit for 8-hour exposure is 5,000 ppm.
  • Above 40,000 ppm (4%): Life-threatening; immediate evacuation needed.

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 requires no adjustments or monthly maintenance after installation, providing truly maintenance-free carbon dioxide monitoring.

Yes. PureAire’s CO₂ Detectors have relay outputs for local alarms, ventilation controls, or integration with fire panels and building automation systems. Remote monitoring, such as PureAire’s Remote Digital Display, Horn/Strobes, or CloudConnect, provides real-time alerts, logging, and compliance support.

  • Clean dust or debris from the sensor housing.
  • Replace sensors at the manufacturer-recommended intervals (typically 5–10 years for NDIR sensors).

Yes. Properly installed PureAire CO₂ Detectors meet International Fire Code (IFC) requirements for CO₂ storage or fire suppression systems, OSHA limits, and other local safety standards.

PureAire Carbon Dioxide Detectors will:

  • Activate visual and audible alarms.
  • Automatically turn on ventilation systems to reduce CO₂ levels.
  • Send notifications via PureAire’s Remote Digital Display or CloudConnect, which can alert building personnel or monitoring centers.