SENSE & EASY
User manual
NLB-CO2+RH+T-5-IQRF | Combined CO2/RH/T battery sensor with IQRF
The sensor is used to continuously monitor air quality inside buildings and then control ventilation (HVAC) systems according to current levels of air internal air quality. The sensor measures the concentration of carbon dioxide (CO2), relative humidity (RH), and temperature (T).
It can be effectively used in offices, classrooms, shopping centers, homes, restaurants, fitness centers, commercial buildings, etc.
- measures CO2, RH, and temperature
- communication over IQRF network
- maintenance during operation is not required
Description
The measuring of CO is based on the principle of infrared radiation attenuation dependence on the CO, concentration in the air (NDIR). Built-in auto-calibration function ensures very good long-term stability. Measurement of relative humidity is based on the principle of capacitive polymer sensor. CO,, RH and temperature outputs are available via the IQRF interface. The sensor can efficiently manage ventilation and heat recovery units, based on current air quality.
The current battery state can easily be determined by looking at the LED indicator. For detailed information about IQRF, use the document NLB-IQRF-Communication. For information on the communication protocol, use the document NLB-Modbus-Communication.
Explanation of abbreviations and technical terms can be found on our website in the Glossary section.
| Parameter | Value Unit |
| Power supply – 2xAA | 1,5 V |
| Battery life | 24 months |
| 1) CO2 measuring range | 400 – 2000/5000 ppm |
| CO2 accuracy | ± 35 ppm ±5 % of reading |
| RH measuring range | 0 – 100 % RH |
| RH accuracy 20 – 80 % | ± 3 % RH |
| RH accuracy 0 – 100 % | ± 6 % RH |
| T measuring range | 0 – 50 °C |
| T accuracy | ± 0,4 °C |
| Working humidity non-condensing | 0 – 95 % RH |
| Working temperature | 0 – 95 % RH |
| Storage temperature | 0 – 95 % RH |
| Expected lifetime | min. 10 years |
| Ingress protection | IP20 |
| Dimensions | 90x80x31 mm |
| Communication period | 90x80x31 mm |
The range 2000/5000 ppm of CO2 is user selectable.
CO2 sensor autocalibration function
Autocalibration compensates for the long-term aging of the key components of the sensor. This function is available only when the sensor power supply is continuous and uninterrupted. Calibration during operation is not necessary.
LED indication description
Each item of signalization can be deactivated over IQRF communication.
Turning sensor on:
After turning the sensor on, the measurement period in minutes will be indicated.
First 10 broadcasts:
The first 10 broadcasts will be indicated with a series Battery under 20%:
If there is less than 20% energy remaining, LED will indicate this state with flashing once an hour, after broadcasting the data.
Battery under 5%:
If there is less than 5% energy remaining, LED will indicate this state with flash after every data broadcast.
Bonding button PAIR
Button is located on the electronics board. Detailed instructions on how to proceed with bonding and unbinding is shown in document NLB-IQRFCommunication.
The RESET button can be used to restart the sensor.
CAUTION:
It is necessary to avoid the severe mechanical shock of the sensor.
Sensor assembly
Dimensions
Box color
Front: white – RAL9016
Base: gray – RAL7035
Way to use
The product is intended for indoor use only. You can read the recommendations for sensor placement on our web pages.
End of product life
Discard the product according to the electronic waste law and the EU directives.
The producer reserves the right of technical changes in order to produce improvements in its properties and functions without previous notice.
Protronix s.r.o.,
Pardubická 177,
Chrudim 537 01,
Czech Republic
www.protronix.cz/en/
www.careforair.eu/en/
um-nlb-co2+rh+t-5-iqrf-en-v4-201103.docx 
