CO2 Sensor
Overview
The Room Sensor CO2 is used to monitor air quality inside buildings and effectively control ventilation (HVAC) systems according to current levels of internal air quality.
The sensor measures concentration of carbon dioxide (CO2) in air. It can be effectively used in offices, classrooms, shopping centres, homes, restaurants, fitness centres, commercial buildings, etc.
The measuring of CO2 is based on the principle of infrared radiation attenuation dependence on the CO2 concentration in the air (NDIR).
Built-in auto-calibration function ensures very good long term stability.
The sensor has one analog output for the actual concentration of CO2.
Ventilation, air conditioning and heat recovery units can be directly controlled based on the output signal of the sensor in very efficient way.
The trigger level of CO2 concentration output relay can be set by a rotary element.
Current air quality can be easily checked by three LED indicators. When ambient light is dimmed, the indicators turn off automatically to not disturb you when falling asleep.
Features & Benefits
- Measures CO2, optical principle NDIR
- LED indication with automatic turn off according to ambient light (at night)
- Analog voltage output 0-10V
- Output relay NO/C
- Maintenance or calibration not required during operation
- Long-term stability
- Expected lifetime >10 years
- For B and B2 models only
- Colour: Front – White, Base – Grey
Technical Information
Technical Information
Drawing and Dimensions
Specification
Part Number – TP541
| Parameter | Value | Unit |
| Supply voltage range | 12 – 35 | V DC |
| 12 – 24 | V AC | |
| Consumption | max 1.5 | W |
| CO2 measuring range 1) | 400 – 1000 | ppm |
| 400 – 2000 | ||
| 400 – 5000 | ||
| CO2 accuracy 2) | ||
| – for ranges 400 – 1000 and 400 – 2000 ppm | ± 40 ppm + ±4 % of reading | |
| – for range 400 – 5000 ppm | ± 60 ppm + ±4 % of reading | |
| CO2 relay – hysteresis | 5 % from range (100ppm/250ppm) | |
| CO2 rate rise | max 1 | min |
| CO2 step response | (90 %) 80 | s |
| Voltage output 3) | 0 – 10 | V DC |
| Max. switching voltage | 250/30 | V AC / V DC |
| Max. switching current | 5/5 | A AC / A DC |
| Working humidity non condensing | 0 – 95 % | RH |
| Working temperature | 0 to +50 | °C |
| Storage temperature | -20 to +60 | °C |
| Expected lifetime | 10 years | |
| Ingress protection | IP20 | |
| Dimensions | 90x80x31 | mm |
1) Measuring range can be chosen by jumper setting.
2) At 15 – 35 °C, 0-80% RH.
3) Minimum achievable output value corresponds to minimum value of the measuring range.
Documentation
Resources
Manuals and Documentation
Product Manual - CO2 Sensor
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Catalogues
Ventilation Systems Catalogue
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CO2 Sensor - Catalogue Page
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CE Certificate of Conformity
Room CO2 Sensor 0-10Vdc – Certificate of Conformity (TP541)
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Room CO2 Sensor 0-10 Vdc - Certificate of Conformity (TP541-392)
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