Pressure sensors
Pressure sensors for HVAC/R systems
In an HVAC/R system, the pressure sensor uses a ceramic sensor element with a piezoresistive measuring principle that has a programmable ASIC with high accuracy. The sensors are temperature compensated and calibrated. They are designed with a compact and robust housing that ensures the sensor can be used in harsh environments. High performance and accuracy enable applications based on dry air or non-corrosive gases or liquids. HVAC/R stands for Heating, Ventilation, Air Conditioning and Refrigeration, which in short means circulating air between the inside and outside of buildings.
HVACR systems play an important role in energy consumption and sustainability goals as they consume on average around 40 per cent of a building's consumption. Therefore, it is important to design energy-efficient and optimised systems for the best comfort of people.
The operation of most HVACR systems is based on the principles of fluid mechanics, thermodynamics and heat transfer. Pressure sensors are therefore a key component for the control of HVACR systems.
HVACR systems basically consist of the following four units:
- Heating units: Warms the surrounding environment.
- Air conditioning units: Cools the surrounding environment and ensures sufficient humidity.
- Ventilation system: Clean the air.
- Refrigeration plants: Keeps the air in specialised environments cold enough to preserve food and medicines, for example.
Air conditioning systems are based on the principle that warm air is extracted from a building and blown over cooling coils that absorb the heat through the liquid refrigerant circulating through the coils. The cool air is blown into the building after being cooled and dehumidified.
For refrigeration systems using refrigerants, heat is collected from the incoming air. The heat evaporates and passes through a compressor, usually located outside or on the roof of the building. The compressor then compresses the gas to a higher pressure and temperature. Warm, pressurised air then flows over the condenser which converts the gas into liquid form and the heat is released into the surrounding environment.
Our supplier HYB has a large range of pressure sensors for a variety of applications in a wide range of pressure ranges and different sensor elements.
Related products
HPSD 8000 series - Mini SMD pressure sensor
- Miniature pressure transducer (13.2x8x6.7mm or 13.2×12.6×4.1mm)
- Straight vertical or horizontal pressure connections
- Differential or absolute configuration
- Standard temperature compensated (0 to 70ºC), extended possible
- High long-term stability
- High accuracy, down to 0.75%
- Digital I2C or SPI output
- Pressure range: 0-1 mbar to 15 bar
- Pressurised media: all non-corrosive gases and liquids
- SMD assembly
