Combined temperature, humidity and carbon dioxide sensor

Precise Indoor Air Monitoring with the Combined Temperature, Humidity and Carbon Dioxide Sensor

The Combined Temperature, Humidity and Carbon Dioxide Sensor from HW-group is a state-of-the-art solution for comprehensive indoor air quality monitoring. This compact device precisely measures temperature, relative humidity, and CO₂ concentration, making it ideal for environments such as offices, schools, data centers, medical facilities, or residential buildings. In particular, temperature measurement and humidity monitoring play a central role in ensuring a healthy, comfortable, and safe indoor climate. Thanks to easy integration into HW-group monitoring systems and robust NDIR technology, the sensor offers a reliable solution for professional air quality monitoring.

Functionality and Applications

The combined CO₂ sensor is a versatile device specifically developed for indoor air monitoring. It measures temperature in the range of 0 to +50 °C with an accuracy of ±0.8 °C, relative humidity from 0 to 95% with an accuracy of ±5% (at 20–80% RH), and CO₂ concentration from 300 to 40,000 ppm. These three parameters are essential for optimizing indoor air quality. In particular, temperature measurement is crucial for ensuring thermal comfort, as temperatures that are too high or too low can impair well-being and, in technical environments such as data centers, damage equipment.

The humidity sensor function is equally important, as relative humidity affects both human well-being and the functionality of equipment. Excessive humidity can promote mold growth, while too low values can cause skin and respiratory problems. In data centers, controlling humidity is essential to avoid electrostatic discharges or corrosion. The sensor provides continuous data that can be monitored in real time, enabling proactive measures such as ventilation or air conditioning adjustments.

Thanks to advanced NDIR technology (non-dispersive infrared sensor), the sensor provides precise carbon dioxide measurement, which is especially important in densely occupied spaces such as classrooms or conference rooms to assess air quality and control ventilation. High CO₂ levels can reduce concentration and increase the risk of infection, making early detection crucial. The sensor is connected via an RJ11 interface (1-Wire UNI-Bus) to HW-group devices such as Ares, Poseidon2, STE2-R2, SD-2x1Wire, or NB-2x1Wire, enabling seamless integration into existing systems. With a 3-meter RJ11 cable, installation is flexible and straightforward.

Technical Specifications

• Measuring ranges:
  • Temperature: 0 to +50 °C, accuracy ±0.8 °C
  • Relative humidity: 0–95% RH, accuracy ±5% at 20–80% RH
  • CO₂ concentration: 300–40,000 ppm, accuracy ±50 ppm +3%, resolution 1 ppm (0–2,000 ppm)
• Connection: RJ11 (1-Wire UNI-Bus), maximum cable length from active port: 30 m
• Power supply: Via RJ11 connection (max. 5 V)
• Housing: Compact IP30 plastic housing, suitable for indoor applications
• Mounting: Wall, ceiling, or table mounting, easy attachment with double-sided adhesive tape
• Scope of delivery: Sensor with 3 m RJ11 connection cable

Benefits for Use

Air quality monitoring with the combined Temperature, Humidity and Carbon Dioxide Sensor offers numerous advantages, especially through precise temperature measurement and humidity monitoring. Temperature monitoring helps to create optimal conditions for people and equipment.

In offices, a constant temperature ensures higher productivity, while in data centers, stable temperature extends the lifespan of servers. The humidity sensor function helps maintain moisture levels in the optimal range, which is crucial in sensitive environments such as archives or medical facilities to avoid damage to materials or equipment.

Continuous indoor air monitoring enables immediate detection and correction of temperature and humidity fluctuations, improving the energy efficiency of air conditioning and ventilation systems.

In schools, a balanced indoor climate promotes students' concentration, while in homes it creates a pleasant living environment. The sensor is particularly effective in combination with the SensDesk Portal, which enables real-time remote monitoring so users can react immediately to changes.

Easy installation is another plus. With the included double-sided adhesive tape, the sensor can be easily attached to walls, ceilings, or desks. The RJ11 sensor interface allows quick connection to HW-group devices without complex wiring. This makes the sensor ideal for flexible use scenarios, from small offices to large industrial facilities.

Why the Temperature, Humidity and Carbon Dioxide Sensor?

The Combined Temperature, Humidity and Carbon Dioxide Sensor combines temperature measurement and humidity sensor and, additionally, CO₂ measurement in a compact device suitable for both professional and private applications. The high measurement accuracy, robust construction, and long service life of 5 to 15 years make it a sustainable investment. Precise measurement of temperature and humidity is especially valuable in environments where fluctuations are critical, such as data centers, where temperatures above 30 °C or humidity below 20% can cause damage.

NDIR technology ensures reliable carbon dioxide measurement, while temperature measurement and humidity monitoring continuously support an optimal indoor climate. Compatibility with HW-group devices allows flexible integration into complex monitoring systems, making the sensor a versatile solution for building management, educational institutions, and industrial applications.

Areas of Application

The combined sensor can be used in numerous areas:

• Building management: Optimization of ventilation systems through precise data on temperature, humidity, and CO₂.
• Educational institutions: Promoting a healthy learning environment through indoor air monitoring.
• Data centers: Protection of sensitive equipment through stable temperature and humidity conditions.
• Healthcare: Ensuring a safe indoor climate in medical facilities.
• Residential buildings: Improving living comfort by controlling temperature and humidity.

This combined sensor from HW-group is a powerful solution for air quality monitoring. With its precise temperature measurement, humidity monitoring, and carbon dioxide measurement, it creates optimal conditions for health, productivity, and equipment safety. Easy installation, high reliability, and long service life make it the ideal choice for anyone who values a healthy indoor climate.