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EU declaration conformity
TVOC sensor | wall mounting | LED indicators | PoM
Product description
This sensor measures temperature, relative humidity, air quality (TVOC), and ambient light.
Measurement and Communication
It measures temperature, humidity, TVOC, and ambient light levels. All measured values are transmitted via Modbus RTU communication. All settings can be adjusted via Modbus RTU.
Power and Connectivity
It operates on 24 VDC PoM (Power over Modbus). Both Modbus RTU communication and 24 VDC power are provided through a single RJ45 connector.
Control and Customization
The ambient light sensor can be used to control the ventilation system based on room occupancy.
The TVOC sensor element is replaceable.
The light intensity of the LEDs used for status indication is adjustable.
Additional specifications and description
What is TVOC, and Why Does It Affect Indoor Air Quality?
TVOC stands for Total Volatile Organic Compounds. These are chemicals that can easily turn into gases and are often found in everyday items like cleaning products, paints, varnishes, and even some building materials and furniture. They are also produced by humans and animals. The most common compounds are benzene, ethylene glycol, formaldehyde, methylene chloride, tetrachloroethylene, toluene, xylene, and 1,3-butadiene.
Measuring TVOC levels is important because some VOCs can be harmful to our health, especially when they accumulate indoors. Breathing in high levels of certain VOCs over a long time can lead to health issues like headaches, dizziness, irritation of the eyes, nose, and throat, and in some cases, they might even cause more serious health problems. By measuring TVOC levels, we can keep track of how much of these chemicals are present in the air inside our homes or workplaces. Monitoring and controlling these levels help us ensure healthier indoor air quality and reduce potential health risks associated with exposure to VOCs.
How Do the LED Indicators Communicate TVOC Levels, and What Additional Data Does the Sensor Access?
This HVAC transmitter offers a clear, visual indication of the TVOC level via the green, yellow and red LED. The green LED indicates that the TVOC level is within range and that there is sufficient ventilation. When the TVOC level enters the alert range, the yellow LED lights up. Red means that the TVOC level is out of range or that there is insufficient ventilation. The measured temperature, relative humidity and TVOC level are available via Modbus RTU. Ambient light level is available via Modbus RTU.
How Do the Sensor's Analog Outputs Work, and What Values Do They Transmit?
This sensor does not have analogue outputs which makes it simpler and more cost efficient. All measured values are available via the Modbus input registers of this sensor. Reading the measured values is possible via SenteraWeb - our online HVAC platform, via 3SModbus software, via a BMS system or via another Modbus master device. Modbus has numerous advantages. The most important ones are that digital signals are less susceptible to interference than analogue signals and that longer cables can be used. Cable lengths of up to 1.000 meters are possible.
What Are the Sensor's Power and Wiring Requirements?
One RJ45 connector is all it takes to connect this sensor. Modbus RTU communication and 24 V DC power supply are connected via one UTP cable - we call it Power over Modbus or PoM. All measured values are available via Modbus RTU communication. To facilitate wiring, we recommend to use the Sentera 24 V DC power supplies with RJ45 connector. These power supplies offer protection against short circuit, overload and overvoltage. A 24 V DC supply voltage increases the safety and reliability of your installation.
What Are the Sensor's Configuration and Customization Options?
This sensor requires very little configuration. It is almost directly usable once it has been installed. Temperature and relative humidity are often region- and seasonal-specific. The presence of VOCs depends on the specific sources and activities taking place in a particular environment. These parameters are still adjusted to the correct values during installation. The other default settings will be suitable for most applications. However, they can also be adjusted via the respective Modbus registers if necessary. The Modbus register map provides an exhaustive list of all programmable settings.
How Is the Sensor Mounted Indoors?
This sensor can be installed indoors on a wall or on a surface. The mounting holes are adapted to standard European wall mounting boxes. The sensor can be attached to the wall mounting box with two screws. The sensor enclosure will cover the entire wall mounting box. To ensure optimal performance, the sensor should be protected from direct sunlight.
What Are the Sensor's Manufacturing Quality, Durability, and Maintenance Features?
Each sensor is calibrated and tested in our factory. In the unlikely event of TVOC sensor element failure, this module can be replaced. We use sensor elements and components of high quality. This ensures the long-term stability and accuracy of this HVAC transmitter. The 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.
∞ Monitoring air quality
TVOC stands for Total Volatile Organic Compounds. These are chemicals that can easily turn into gases and are often found in everyday items like cleaning products, paints, varnishes, and even some building materials and furniture. They are also produced by humans and animals. The most common compounds are benzene, ethylene glycol, formaldehyde, methylene chloride, tetrachloroethylene, toluene, xylene, and 1,3-butadiene.
Measuring TVOC levels is important because some VOCs can be harmful to our health, especially when they accumulate indoors. Breathing in high levels of certain VOCs over a long time can lead to health issues like headaches, dizziness, irritation of the eyes, nose, and throat, and in some cases, they might even cause more serious health problems. By measuring TVOC levels, we can keep track of how much of these chemicals are present in the air inside our homes or workplaces. Monitoring and controlling these levels help us ensure healthier indoor air quality and reduce potential health risks associated with exposure to VOCs.
How Do the LED Indicators Communicate TVOC Levels, and What Additional Data Does the Sensor Access?
This HVAC transmitter offers a clear, visual indication of the TVOC level via the green, yellow and red LED. The green LED indicates that the TVOC level is within range and that there is sufficient ventilation. When the TVOC level enters the alert range, the yellow LED lights up. Red means that the TVOC level is out of range or that there is insufficient ventilation. The measured temperature, relative humidity and TVOC level are available via Modbus RTU. Ambient light level is available via Modbus RTU.
How Do the Sensor's Analog Outputs Work, and What Values Do They Transmit?
This sensor does not have analogue outputs which makes it simpler and more cost efficient. All measured values are available via the Modbus input registers of this sensor. Reading the measured values is possible via SenteraWeb - our online HVAC platform, via 3SModbus software, via a BMS system or via another Modbus master device. Modbus has numerous advantages. The most important ones are that digital signals are less susceptible to interference than analogue signals and that longer cables can be used. Cable lengths of up to 1.000 meters are possible.
What Are the Sensor's Power and Wiring Requirements?
One RJ45 connector is all it takes to connect this sensor. Modbus RTU communication and 24 V DC power supply are connected via one UTP cable - we call it Power over Modbus or PoM. All measured values are available via Modbus RTU communication. To facilitate wiring, we recommend to use the Sentera 24 V DC power supplies with RJ45 connector. These power supplies offer protection against short circuit, overload and overvoltage. A 24 V DC supply voltage increases the safety and reliability of your installation.
What Are the Sensor's Configuration and Customization Options?
This sensor requires very little configuration. It is almost directly usable once it has been installed. Temperature and relative humidity are often region- and seasonal-specific. The presence of VOCs depends on the specific sources and activities taking place in a particular environment. These parameters are still adjusted to the correct values during installation. The other default settings will be suitable for most applications. However, they can also be adjusted via the respective Modbus registers if necessary. The Modbus register map provides an exhaustive list of all programmable settings.
How Is the Sensor Mounted Indoors?
This sensor can be installed indoors on a wall or on a surface. The mounting holes are adapted to standard European wall mounting boxes. The sensor can be attached to the wall mounting box with two screws. The sensor enclosure will cover the entire wall mounting box. To ensure optimal performance, the sensor should be protected from direct sunlight.
What Are the Sensor's Manufacturing Quality, Durability, and Maintenance Features?
Each sensor is calibrated and tested in our factory. In the unlikely event of TVOC sensor element failure, this module can be replaced. We use sensor elements and components of high quality. This ensures the long-term stability and accuracy of this HVAC transmitter. The 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.
∞ Monitoring air quality
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