CO2 Measurement - Desktop & Handheld

Why Monitor CO2 levels?
There are legal limits to the level of carbon dioxide that you can expose people to.

A high level of carbon dioxide in a room indicates inadequate ventilation. This can cause
headaches, fatigue, eye and throat irritation, increased heart rate, dizziness,
fatigue, rapid breathing visual and hearing dysfunctions.

1000ppm (0.1%) should be used as an upper limit for all indoor areas.
Exposure to higher levels may cause unconsciousness or death within minutes of the exposure

360ppm     Normal

600ppm     People notice the air is "stuffy."

1000ppm   Indicates inadequate ventilation. Complaints of fatigue, headaches ad eye/throat irritation will be widespread.
Should be upper limit for indoor areas.

10,000ppm  Some people may begin to feel; shortness of breath, difficulty in breathing,
rapid pulse rate, headaches, hearing loss, hyperventilation, sweating, and fatigue.
Can cause drowsiness with prolonged exposure.


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KeepAlert CO2 Meters

Measure CO2, temperature, humidity, date and time

Excess CO2 causes drowsiness, headaches and poor concentration.
The Keep Alert Desktop / Wall Mount CO2 Meters measure the level of CO2 in the air and alerts you when levels become too high.
Know when to have a break, open a door or window, or call in the air-conditioning technicians.

KAWALL KeepAlert Desktop/Wall Mount CO2 Meter - Data Logging

KeepAlert Desktop/Wall MountThis versatile desktop or wall mountable CO2 Meter keeps track of the indoor air quality in offices, schools, or any indoor space where lots of people are frequently present. The CO2 level is a good indicator of the overall air quality, especially in terms of the gases people breathe out.

  • Desktop or wall mounted
  • Modern design with large, easy-read LCD
  • Bright LEDs for status and alerts
  • Store up to 32,000 readings
  • Convenient USB interface for power and data transmission
  • Measures up to 9999ppm CO₂
  • Easy-to-use PC software
  • CO2 Measurement range: 0-9999ppm
  • CO2 Accuracy: +/-75ppm+5% of reading (0-2000ppm)
  • Audible Alarm with High/Low Threshold setting: Yes
  • Data Loggin Mode: Yes
  • Temperature Range: -10 - 50 degrees C
  • Temperature Accuracy: +/-0.6 degrees C
  • Relative Humidity Range: 0.1% - 99.9%
  • RH Accuracy: +/-5% RH (at 25C, 10-90%RH), or +/-7% RH otherwise
  • USB Interface: Yes
  • Power supply: 9V DC input socket for AC mains adaptor

User Manual for KAWALL KeepAlert Desktop/Wallmount CO2 Display Logger (PDF)

KAWALL Keep Alert Desktop/Wallmount CO2 Display Data Logger: $250+GST   (10/2019)


KAHH  KeepAlert Handheld CO2 Meter  

KeepAlert Handheld CO2 MeterThe KeepAlert Handheld CO2 Meter is designed to measure CO2
levels as well as temperature and humidity.

The KeepAlert Handheld CO2 Meter measures up to 1% CO2 levels.
Ideal for spot checking many locations.
The perfect method to double check wall mounted units and to evaluate those areas where a monitor is not installed.
Can be used in any location.

    Brochure on KeepAlert Handheld CO2 meter (pdf file, opens in new tab or window)

• Displays CO2 , Temperature and Humidity
• Reusable
• Robust
• No need for External Probes
• Cleanable
• Replaceable batteries
• Non-dispersive Infrared measurement
• Portable single unit
• On off switch, Auto Off function
• Uses 4 x AA batteries

Cold Chain Management
Agricultural Production
Transport or Shipping
Monitoring of office environments
HVAC Systems
Storage and Warehousing
Agricultural Research
Greenhouse and Hydroponic Gardens


Minimum CO2 0ppm  Accuracy 0.2% vol
Maximum CO2 10,000ppm (1%)
Minimum Temperature  -30°C Accuracy 0.2°C @ 25°C
Maximum Temperature 60°C Resolution  0.2°C or 0.1°C
Minimum Humidity  0% Accuracy  +/-3%
Maximum Humidity 100%
  Size  170mm x 70mm x 55mm
Sample Rate  1 min to 255 min  Auto Off  Yes
Housing Material  Polycarbonate  Guarantee  1 year

KAHH  KeepAlert Handheld CO2 Meter:   $580+GST (10/2019)


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