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Multifunctional sensors
Multifunctional HVAC sensors — CO2, temperature, humidity, toxic gases and pressure for demand-controlled ventilation
HVAC sensors are the brain of an energy-efficient ventilation system. Without sensors, the fan runs on a fixed schedule — on at 7:00am, off at 10:00pm, regardless of whether there are 50 people in the space or none. With sensors, the fan receives a signal from actual air quality and adapts: it accelerates when CO₂ exceeds 1,000 ppm, reduces speed when occupants leave, stops when air quality is perfect. The result: 30–60% energy saving versus fixed-schedule operation, with guaranteed air quality at all times.
Available sensor categories:
Temperature and humidity — room and duct sensors for microclimate monitoring and control. 0-10V or 4-20mA output compatible with any controller or drive. Used to control heat recovery units, air conditioning systems and residential ventilation.
Toxic gases CO/NO₂ — sensors for detecting carbon monoxide and nitrogen dioxide in underground car parks, tunnels and enclosed spaces with vehicle traffic. The alarm signal commands automatic ventilation system activation before concentration reaches health-hazardous levels. Mandatory in underground car parks per fire safety and health regulations.
CO₂ level — NDIR (non-dispersive infrared) sensors for precise measurement of carbon dioxide — the standard indicator of space occupancy. At 400 ppm: clean outdoor air. At 800 ppm: well-ventilated space. At 1,200 ppm: degraded quality, perceptible odours. At 2,000 ppm: impaired concentration and wellbeing. The sensor commands increased ventilation airflow exactly when needed, not on a fixed schedule. Available for wall mounting in rooms and duct immersion mounting in AHU ductwork.
Air quality (VOC) — sensors for volatile organic compounds (VOCs), general indicators of indoor air pollutants — tobacco smoke, body odours, cleaning product vapours, new furniture off-gassing. Complementary to CO₂ in spaces with multiple pollution sources.
Pressure — differential pressure sensors for filter clogging monitoring (differential pressure increases as the filter loads) and for VAV (Variable Air Volume) system control. The signal alerts the optimal filter replacement moment and maintains constant airflow regardless of variable installation resistance.
Compatibility: all sensors in the range provide standard 0-10V or 4-20mA signals, directly compatible with speed controllers, digital drives and frequency inverters in the same catalogue.
FCTH8
Intelligent temperature / humidity sensor, 230VAC
Pre-order
DPS-M-2K0 -2
Pressure transmitter | display | 0-2000 Pa | PoM
In stock
DPSPF-1K0 -2
The supply voltage is 24 VDC.
The operating range is 0 to 1.000 Pa.
Pre-order
DPSPF-LP
The supply voltage is 24 VDC.
The operating range is -125 to +125 Pa
Pre-order
DPSPM-LP
Pre-order
FCC08-R
Intelligent temperature | humidity | CO | NO2 sensor, 230 VAC
Pre-order
FCMF8-R CO2
CO2 controller | visible CO2 alert, 230 VAC
Is there sufficient fresh air supply?People produce CO2 or carbon dioxide while breathing. That makes CO2 concentration a good indicator for the occupancy and activity level in a space. In many applications, CO2 sensors are used as an indicator for the ventilation requirements. This HVAC transmitter offers a clear, visual indication of the CO2 level via the green, yellow and red LED. The green LED indicates that the CO2 level is within range - there is sufficient fresh air supply. When the CO2 level enters the alert range, the yellow LED lights up. Red means: CO2 out of range or insufficient fresh air supply. The measured temperature, relative humidity and CO2 level are available via the three analogue outputs and via Modbus RTU. The dew point and ambient light level are available via Modbus RTU.
NDIR sensor technologyNDIR or Nondispersive Infrared technology is used to measure the CO2 level. This technology offers a low life-cycle cost and a precise and stable long-term operation.
This sensor has three analogue outputs. Each of them transmits one of the measured values. E.g. by default, output 1 will transmit 0 V at 0 °C and 10 V at 50 °C. Each output value varies proportionally in function of the measured temperature, humidity or CO2 concentration. The measured temperature is available via output 1, relative humidity via output 2 and CO2 concentration via output 3.Easy to use!This sensor doesn't require configuration. Once installed, it is ready to use. The default settings will do for most applications. If necessary, the settings can be adjusted via Modbus RTU.E.g. a different output type can be selected to make it compatible with other devices: 0-10 VDC / 0-20 mA / 0-100 % PWM. Also the light intensity of the LEDs for status indication is adjustable. The Modbus register map provides a complete overview of all adjustable settings.
3-wire connectionThis sensor can be supplied with 24 VDC or with 24 VAC. It is intended for 3-wire connection. The ground of the output (GND) is internally connected to the ground of the supply voltage (V-). Make sure not to connect this common ground to other devices that are powered by a DC voltage.
Self-calibrating to compensate sensor driftThe ABC logic self-calibrating algorithm is by default enabled. This algorithm is designed to be used in applications where CO2 concentrations will drop to outside ambient conditions (400 ppm) at least one time (15 minutes) in a 7day period, which is typically seen during unoccupied periods. The sensor will reach its operational accuracy after 25 hours of continuous operation at a condition that it was exposed to ambient reference levels of air at 400 ppm ± 10 ppm CO2.
Wall mountingThe enclosure offers an IP30 protection against ingress of dust and moisture. It can be mounted on a wall indoors. To ensure optimal performance, it should be protected from direct sunlight.
Pre-order
FCMFGB-R S CO2
CO2 controller | audible and visible CO2 alert, 24 VAC-VDC
Is there sufficient fresh air supply?People produce CO2 or carbon dioxide while breathing. That makes CO2 concentration a good indicator for the occupancy and activity level in a space. In many applications, CO2 sensors are used as an indicator for the ventilation requirements. This HVAC transmitter offers a clear, visual indication of the CO2 level via the green, yellow and red LED. The green LED indicates that the CO2 level is within range - there is sufficient fresh air supply. When the CO2 level enters the alert range, the yellow LED lights up. Red means: CO2 out of range or insufficient fresh air supply. The measured temperature, relative humidity and CO2 level are available via the three analogue outputs and via Modbus RTU. The dew point and ambient light level are available via Modbus RTU.
NDIR sensor technologyNDIR or Nondispersive Infrared technology is used to measure the CO2 level. This technology offers a low life-cycle cost and a precise and stable long-term operation.
This sensor has three analogue outputs. Each of them transmits one of the measured values. E.g. by default, output 1 will transmit 0 V at 0 °C and 10 V at 50 °C. Each output value varies proportionally in function of the measured temperature, humidity or CO2 concentration. The measured temperature is available via output 1, relative humidity via output 2 and CO2 concentration via output 3.Easy to use!This sensor doesn't require configuration. Once installed, it is ready to use. The default settings will do for most applications. If necessary, the settings can be adjusted via Modbus RTU.E.g. a different output type can be selected to make it compatible with other devices: 0-10 VDC / 0-20 mA / 0-100 % PWM. Also the light intensity of the LEDs for status indication is adjustable. The Modbus register map provides a complete overview of all adjustable settings.
3-wire connectionThis sensor can be supplied with 24 VDC or with 24 VAC. It is intended for 3-wire connection. The ground of the output (GND) is internally connected to the ground of the supply voltage (V-). Make sure not to connect this common ground to other devices that are powered by a DC voltage.
Self-calibrating to compensate sensor driftThe ABC logic self-calibrating algorithm is by default enabled. This algorithm is designed to be used in applications where CO2 concentrations will drop to outside ambient conditions (400 ppm) at least one time (15 minutes) in a 7day period, which is typically seen during unoccupied periods. The sensor will reach its operational accuracy after 25 hours of continuous operation at a condition that it was exposed to ambient reference levels of air at 400 ppm ± 10 ppm CO2.
Wall mountingThe enclosure offers an IP30 protection against ingress of dust and moisture. It can be mounted on a wall indoors. To ensure optimal performance, it should be protected from direct sunlight.
In stock
FCTCG
Intelligent temperature / humidity sensor, 24 VAC - VDC
Pre-order
FCVC8-R
Intelligent temperature | humidity | TVOC sensor 230 VAC
In stock
FCVCG-R
Intelligent temperature | humidity | TVOC sensor, 24VAC-VDC
Pre-order
Intelligent temperature | humidity | CO | NO2 sensor, 230 VAC
Intelligent temperature | humidity | CO | NO2 sensor, 24 VAC-VDC
Pre-order
Intelligent temperature | humidity | CO | NO2 sensor, 230 VAC
Intelligent temperature | humidity | CO | NO2 sensor, 24 VAC-VDC
Pre-order
Intelligent temperature | humidity | CO | NO2 sensor, 230 VAC
Intelligent temperature | humidity | CO | NO2 sensor, 24 VAC-VDC
Pre-order
RCTHG-2
Intelligent temperature / humidity sensor, 24 VAC - 24 VDC
Pre-order
RCVCG-R
Intelligent temperature | humidity | TVOC sensor, 24VAC-VDC
Pre-order
RSMFG-2R CO2
Is there sufficient fresh air supply?People produce CO2 or carbon dioxide while breathing. That makes CO2 concentration a good indicator for the occupancy and activity level in a space. In many applications, CO2 sensors are used as an indicator for the ventilation requirements. This HVAC transmitter offers a clear, visual indication of the CO2 level via the green, yellow and red LED. The green LED indicates that the CO2 level is within range - there is sufficient fresh air supply. When the CO2 level enters the alert range, the yellow LED lights up. Red means: CO2 out of range or insufficient fresh air supply. The measured temperature, relative humidity and CO2 level are available via the three analogue outputs and via Modbus RTU. The dew point and ambient light level are available via Modbus RTU.
NDIR sensor technologyNDIR or Nondispersive Infrared technology is used to measure the CO2 level. This technology offers a low life-cycle cost and a precise and stable long-term operation.
This sensor has three analogue outputs. Each of them transmits one of the measured values. E.g. by default, output 1 will transmit 0 V at 0 °C and 10 V at 50 °C. Each output value varies proportionally in function of the measured temperature, humidity or CO2 concentration. The measured temperature is available via output 1, relative humidity via output 2 and CO2 concentration via output 3.
Easy to use!This sensor doesn't require configuration. Once installed, it is ready to use. The default settings will do for most applications. If necessary, the settings can be adjusted via Modbus RTU.E.g. a different output type can be selected to make it compatible with other devices: 0-10 VDC / 0-20 mA / 0-100 % PWM. Also the light intensity of the LEDs for status indication is adjustable. The Modbus register map provides a complete overview of all adjustable settings.
3-wire connectionThis sensor can be supplied with 24 VDC or with 24 VAC. It is intended for 3-wire connection. The ground of the output (GND) is internally connected to the ground of the supply voltage (V-). Make sure not to connect this common ground to other devices that are powered by a DC voltage.
Self-calibrating to compensate sensor driftThe ABC logic self-calibrating algorithm is by default enabled. This algorithm is designed to be used in applications where CO2 concentrations will drop to outside ambient conditions (400 ppm) at least one time (15 minutes) in a 7day period, which is typically seen during unoccupied periods. The sensor will reach its operational accuracy after 25 hours of continuous operation at a condition that it was exposed to ambient reference levels of air at 400 ppm ± 10 ppm CO2.
Wall mountingThe enclosure offers an IP30 protection against ingress of dust and moisture. It can be mounted on a wall indoors. To ensure optimal performance, it should be protected from direct sunlight.
In stock
RSTHG-3
Intelligent temperature / humidity sensor, 24 VAC - VDC
Pre-order
RSVCG-R
Intelligent temperature | humidity | TVOC sensor, 24VAC-VDC
Pre-order
SPS-G-2K0 — differential pressure transmitter 8 selectable ranges 0–2,000 Pa, analogue output + Modbus RTU, IP54
SPS-G-2K0 — very compact differential pressure transmitter from the SPS series, with 8 selectable measuring ranges from 0–100 Pa to 0–2,000 Pa, including bidirectional ranges −50/+50 Pa and −100/+100 Pa.
Selectable analogue output 0–10 VDC / 0–20 mA or PWM (open collector) + Modbus RTU (RS485) communication for BMS integration.
Monolithic silicon piezoresistive sensor, temperature and pressure compensated — accuracy ±3%, long-term stability ±1%/year.
Supply 15–24 VAC or 18–34 VDC, 3-wire.
Protection IP54.
Compact dimensions 80×85×65 mm, weight 0.13 kg.
In stock
