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FAQ for your search:

What does ‘IP protection’ mean?

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

What is the difference between a transmitter, intelligent sensor and sensor controller?

Sentera offers three sensor types: transmitters, intelligent sensors, and sensor controllers. The main difference between these types is the functionality, or t

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

Why to measure temperature and relative humidity?

Temperature and relative humidity have a direct impact on the sense of well-being and comfort of the residents. Dry air leads to dry skin, itchy eyes, and i

Why measure CO2?

Demand-controlled ventilation based on CO2 measurements Demand-controlled ventilation systems use CO2 concentrations within a building to know whether adequate

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

Why measure CO in underground parking garages?

In general, cars with combustion engines primarily emit carbon dioxide (CO2) and carbon monoxide (CO) as exhaust gases. However, the relative amounts of each em

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

Can I use a Sentera transmitter for agriculture or horticulture applications?

Sentera has products for a wide range of applications. Agriculture is one of those. Sentera products in this category measure CO2, soil moisture, relative humid

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 an NDIR CO2 Sensor Work?

NDIR stands for “nondispersive infrared”. Today, it is the most common sensor type for the measurement of CO2, carbon dioxide, concentrations in an environment.

How to recalibrate a CO2 sensor?

Virtually all gas sensors are subject to some sort of drift, including CO2 sensors. The degree of drift is partially dependent on the use of quality components

Who is Sentera?

Sentera - innovative and easy to use HVAC control solutions! It's our mission to optimise your comfort and indoor air quality by regulating fresh air supply and

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 temperature is the temperature at which air begins to condense. When air comes into contact with an object that has the dew point temperature, con

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

Why measure indoor temperature?

Temperature is the measurement of how hot or cold a particular environment is. When we talk about ambient temperature, room temperature or outside 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 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 NDIR sensors exist?

General characteristics of all NDIR sensors NDIR (Non-dispersive Infra-red) sensing has become the leading method for measuring CO2 concentration. This techno

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
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