The HVAC system, which stands for Heating, Ventilating, and Air Conditioning, is used to regulate the indoor environment of a building to ensure the occupants' comfort. One such HVAC system is the hydronic HVAC system, which employs water as its primary fluid for transferring energy throughout the building.
Water has outstanding heat transfer characteristics and other benefits (i.e., plentiful, non-toxic, "green," inexpensive) that make it ideal for this purpose.
The system requires a heat source, such as a boiler, to provide warmth, and a cooling source, such as a chiller or cooling tower, for cooling.
The heated or cooled water is then pumped throughout the building to air handling units or terminal units, where it exchanges energy with air from the ventilation system before recirculating it to the heating or cooling source. Finally, the conditioned air is distributed to the room.
Image Credit: Sensata Technologies, Inc.
Solution
Sensata offers a range of solutions to enhance the efficiency of the HVAC process by monitoring it closely. The company provides an array of sensors and circuit breakers that protect the application from damage. In particular, Pressure Sensors and Switches play a critical role in the monitoring of HVAC systems.
Sensata's pressure sensors are designed to sense the pressure of refrigerants and other liquid media as they flow through the system. Temperature Sensors and Switches are equally crucial to HVAC systems, as they are used to monitor the temperature of liquid media.
Sensata's temperature sensors offer precise and accurate temperature control. Switches and Relays are utilized to turn different parts of the HVAC system on and off during operation. Sensata's relays are engineered for long-lasting, silent operation, which reduces the need for maintenance and increases user comfort.
Power Control components are employed to protect HVAC systems from power surges. Sensata's circuit breakers provide high pulse tolerance and long-time trip delay, which are required to safeguard HVAC systems.
Recommended Products
Table 1. Source: Sensata Technologies, Inc.
| Reference on Diagram |
Product |
Function |
Features |
Brand |
| Pressure Sensors & Switches |
| 1 |
 |
PS80 SERIES |
The PS80 series is a pressure switch that can be used for monitoring the refrigerant line pressure on chiller and cold water generator applications. Its robust build allows use with a variety of refrigerants. |
- High reliability
- Enviormentally sealed leads
- Fixed set points
|
Klixon |
| 2 |
 |
116CP SERIES |
The 116CP series is a pressure sensor that specializes in sensing pressure with liquid media. In boiler applications it can be an inexpensive option for monitoring safe levels of hot water pressure due to its plastic housing. |
- High accuracy +/-1.5%FS
- REACH/RoHS compliant
- 0-4 to 0-16 bar
|
Sensata Technologies |
| 3 |
 |
2CP5 SERIES |
The 2CP5 series can monitor pressure between the pump and return water inlet allowing for more precise information to board controls. |
- UL recognized
- Overvoltage and short circuit protected
- Accurate performance over wide temperatures
|
Sensata Technologies |
| 4 |
 |
112CP SERIES |
The 112CP series is a combination of a pressure sensor and temperature sensor in one package. It reduces the need for multiple sensors in compact HVAC applications. |
- 0 to 150 to 0 to 650 psi
- -40 °C to 135 °C Temperature Rating
- Precise superheat measurement
|
Sensata Technologies |
| Temperature |
| 5 |
 |
1NT & 3NT SERIES |
The 1NT & 3NT thermostats offer runaway thermal protection at any junction critical in HVAC applications. Due to the 3NT's mounting clip it is especially useful on in-room thermal units or on copper tubing where safety is required. |
- -40 °C to 240 °C Temperature Rating
- Multiple switch actions available
- ISO9001: 2000 certification
|
Sensata Technologies |
| 6 |
 |
3000 SERIES |
The 3000 series is a probe style temperature sensor that can deliver precise, accurate temperatures of liquid medias to board level controllers for optimal temperature control and efficiencies. Ideal for smart or green HVAC applications. |
- Available as a RTD or Thermistor
- -40 °C to 125 °C Temperature Rating
- Stainless steel probe assembly
|
Sensata Technologies |
| Switches & Relays |
| 7 |
 |
EL SERIES |
The EL series is a solid state relay that offers the end-user silent operation of blowers or fans on the thermal units. Ideal for medical or hotel HVAC applications where silent operation can be critical. |
- 21 mm wide package
- 10A & 30A @ 24 to 280 VAC
- UL & cUL Recognized, CE & RoHS Compliant, TUV certified
|
Crydom |
| Power Controls |
| 8 |
 |
209 SERIES |
The 209 series circuit breaker is capable of meeting the unique trip point and trip time challenges of HVAC applications. A reduced trip point allows compliance to UL and NEC requirements while also preventing nuisance trips during motor start. |
- UL489 Listed or UL 508 Recognized
- 115% trip point capable for UL and NEC requirements
- High pulse tolerance and long time delay
|
Airpax |
HVAC System
Image Credit: Sensata Technologies, Inc.
Boilers System
Image Credit: Sensata Technologies, Inc.
This information has been sourced, reviewed and adapted from materials provided by Sensata Technologies, Inc.
For more information on this source, please visit Sensata Technologies, Inc.