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What is IP protection?

Protection against ingress of solid objects and liquids IP rating stands for “Ingress Protection rating”. However, sometimes, “International Protection rating”

How to control EC fan speed?

An EC motor or Electronically Commutated motor can be seen as an AC motor with integrated fan speed controller. The EC motor requires an indication of the desir

What is indoor air quality?

Indoor air quality (IAQ) refers to the condition of the air inside buildings and its impact on the health and well-being of the people inside. Indoor air qualit

What is the importance of measuring CO2?

What is CO2? Carbon dioxide or CO2 is a colourless and odourless gas that is naturally present in our atmosphere. It plays an important role in the life on Ea

Why to measure TVOC or indoor air quality?

Volatile Organic Compounds or VOCs are organic chemicals that become a gas at room temperature. They are the main origin of air pollution at ground level. A com

What is the purpose of measuring CO in car parks?

Car parks are enclosed spaces, with often no natural ventilation and multiple levels with typically low ceilings. Toxic exhaust gases from vehicles can quickly

What is PoM or Power over Modbus?

Many Sentera products can share information via Modbus communication. Modbus is a serial communication protocol that uses RS485 technology. Sentera Modbus-compa

What is the difference between 3-wire and 4-wire connection?

4-wire connection Sentera -F and -H sensors require a supply voltage of 24 VDC. This type of sensors require a 4-wire connection. They can be connected with a

How does a nondispersive infrared (NDIR) CO2 sensor work?

Nondispersive infrared (NDIR) sensing technology is the most widely used method for measuring CO2 concentrations in an environment. NDIR sensors use an infrared

How to (re)calibrate a CO2 sensor?

All gas sensors experience a certain degree of drift over time, including CO2 sensors. Even with high-quality components and robust design, small deviations can

How to measure air volume flow or air velocity?

A balanced ventilation system supplies fresh air to the building while it extracts stale air from the building. To check whether there is sufficient ventilation

What is dew point temperature?

The dew point is another way to describe how much moisture is present in the air. It is the temperature at which condensation starts. In other words, at the dew

How to find a product on the website?

The website of Sentera offers a comprehensive and user-friendly approach to finding a product, providing multiple ways to cater to various search preferences an

What is relative humidity?

What is relative humidity? Relative humidity is a way to express how humid the air is. At any given temperature, there is water vapour in the air. Relative humi

What is the importance of indoor temperature?

Temperature defines how hot or cold something feels and is typically measured in degrees Celsius (°C) or Fahrenheit (°F). Ambient temperature, room temperature

How to interpret article codes of Sentera sensors?

How to interpret article codes of Sentera sensors? The Sentera article codes follow a certain logic. Every character in the code stands for a characteristic of

How do destratification fans work?

Destratification is a simple, yet effective solution for heating savings in areas with high ceilings like warehouses and communal spaces. A destratification fan

What is a Modbus Network Bus Terminator or NBT?

Disruptions in a communication network can be prevented by using Network Bus Terminators or NBTs. Modbus Network Bus Terminators reduce voltage reflections in t

What should I pay attention to when creating a Modbus RTU network?

What is (RS485) Modbus RTU communication? Modbus RTU is an open serial protocol derived from the master/slave architecture (now client/server) originally develo

What is a control signal?

A control signal is typically used to control an electronic device. This can be a fan speed controller, a damper actuator, an EC fan, etc. An example: Telling a

What is the difference between VDC and VAC?

Alternating Current (AC) and Direct Current (DC) are the two types of electric currents that coexists in our daily life. They are both used for supplying power

What are the advantages of Modbus communication over analogue signals?

Modbus communication offers several significant advantages over traditional analogue signals, particularly in industrial and home and building automation applic

What types of CO2 sensors exist?

Carbon dioxide (CO2) is a natural component of the air and a key indicator of indoor air quality. Since CO2 mainly originates from human respiration, its concen

What are the key components of an air handling unit?

The main parts of an air-handling unit (AHU) are shown on the drawing below. This picture will be used as an example; however, many other different combinations

What is the best placement for sensors on air handling unit?

Sentera offers a wide range of control solutions for your air-handling units (AHU). These solutions include various sensors, a certain amount of which come pre-

What are the most common types of heat recuperators in AHU and how do they work?

The three most common types of energy recovery heat exchangers (recuperators) in air handling units (AHUs) are: • Plate heat exchangers • Rotary heat ex

How to mount a room sensor?

The room sensors of Sentera are intended for wall installation indoors. The front cover of the sensors is made of ASA (Acrylonitrile Styrene Acrylate) plastic,

How to use a frequency inverter?

Sentera has a wide range of products and solutions to control fans and monitor indoor air quality. Our product range has a modular structure, which offers enorm

What is a standard European flush-mounting wall box?

Flush-mounting boxes for solid or hollow walls An important consideration when choosing a flush-mounting box is whether it should be installed in a solid or h

What is the interplay between temperature and relative humidity?

Temperature and relative humidity (RH) go hand-in-hand. Both factors play a major role in indoor comfort and well-being of residents. There is a direct and cont

How does a photoacoustic spectroscopy (PAS) CO2 sensor work?

Photoacoustic spectroscopy (PAS) sensors use the same working principle of the absorption wavelengths but unlike the NDIR sensors that measure the receiving lig
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