TRH-3351 is a carbon dioxide monitor for indoor environment. It can measure the concentration of CO2 and the temperature and humidity of the environment for a long time. It uses NDIR technology to improve long-term stability. Applicable places: Measuring environmental carbon dioxide such as offices, factories, schools, department stores, libraries. Ensure the safety and comfort of your workspace with Tecpel's advanced and reliable monitoring solutions.
 
Measurement Specification
CO2 Measurement : 0~3,000 ppm
Temperature Measurement : 0~40 °C (32~104°F)
Humidity Measurement : 20~90 %RH
CO2 Resolution : 1ppm @ 0~1,000ppm
Temperature Resolution : 0.1°C (0.1°F)
Humidity Resolution : 1 %RH
CO2 Accuracy : ±50ppm @when less than 1,000ppm ，±70ppm @ when 1,000~2,000ppm . The other is 7%
Temperature Accuracy : ±1°C (±2°F)
Humidity Accuracy : ±5%RH @23°C
CO2 Repeatability : ±20 ppm
Pressure Coefficient : 0.13% of reading/mmHg (you can enter the correct height yourself)
Temperature Coefficient : Change of reading per degree Celsius ±0.1% or ±2 ppm, whichever is greater, refer to 25°C
Humidity Time : Less than 5 minutes (63% change)
Opening Time Spending : The concentration value will be displayed for about 15 seconds after power on
Reaction Speed : Approx. 2mins (63% change)
Warn-up Time : Less than 60 seconds at 22°C (time from boot to completion of numerical display)
Display Choice : °F / °C, or Off.
Product Features
Double Beam : NDIR tech.
Lighting LED : Green
Air Quality Light : Three-color Indicator
Brightness Adjustment : Auto
Product Information
Working Environment : 0~40°C (32~104°F) / lower than 95%RH without dew。
Storage Environment : -20~60°C (4~140°F) / lower than 70%RH without dew。
Elevation Limitation : Lower than 1,000 meters
Sensor : NDIR (Non-dispersive infrared light method)
Power Supply : AC100~240V ，50/60Hz，Approx. 7(W)
Dimension : 117.0 × 27.0 × 17.5 mm
Weight : 1,400 g (Battery including)
Accessory : Manual、 Adaptor