CCT high-pressure/temperature sensor

For air-conditioning systems with CO2 heat pump

The CCT high-pressure temperature sensor was specially developed for the high pressures and temperatures in CO2 heat pumps (R744). Such heat pumps are primarily used in thermal management in vehicles with electric drive (EV). Thanks to its robust stainless steel design, the sensor withstands the high pressures and temperatures in this application.

A digital single-wire interface (LIN) ensures reliable transmission of the pressure and temperature readings. The stainless steel pressure measuring element and the specially developed additional correction function for the temperature readings enable high measuring accuracy for pressure and temperature.

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FIELDS OF APPLICATION
  • Air conditioning systems
  • Heat pumps with the refrigerant CO2 (R744)
  • Thermal management (battery) in EV
FEATURES

Robust design

  • Stainless steel design for high pressure applications
  • Special sealing concept to the system

Proven stainless steel measuring element

  • Excellent long-term stability
  • High fluid compatibility due to the welded design

Temperature measurement directly inside the medium

  • Fast response time
  • High temperature measurement accuracy is achieved through a special correction function

Application-specific evaluation electronics

  • Pressure and temperature signal available via digital single-wire interface (LIN)
  • Tired-and-tested automobile EMC/ESD resistance
  • Extended diagnostic and protection functions
  • Tested LIN 2.0 conformity with energy-saving mode (sleep mode)

Fully automated assembly

  • Cost effective
  • Large quantities can be produced
TECHNICAL SPECIFICATION
Measurement range
Nominal pressure 0–10 to 0–200 bar
Over pressure 2× nominal pressure
Burst pressure 3× nominal pressure
Pressure type Relative
 
Electrical characteristics
Supply voltage 9–16 V
Current consumption max. 10 mA
Output signal LIN 2.0
 
Mechanical characteristics
Measuring element Stainless-steel cell with resistive measuring bridge
Housing material Stainless steel
Pressure connection HEX 24, M18×1
Thread Male thread
Electrical connection 3-pin MQS plug
Installation position Any
Weight Approx. 41 g
 
Accuracy
Total pressure error ± 0.5 % FS (0–90 °C)
± 1.5 % FS (–40–140 °C)
Total temperature error ± 1K 1)
Response time (t90) 3 sec 1)
 
Environmental conditions
Operating temperature range –40 °C–140 °C
Media temperature range –40–165 °C (180 °C)
Media compatibility R744
 
1) Depending on installation situation

Similar sensors

CCT pressure sensor

The climate-control pressure transmitter (CCT) was developed specifically for measuring the pressure of refrigerants in motor vehicles.

CCT pressure/temperature sensor

The CCT pressure temperature sensor is often used in heat pumps for climate control systems and in thermal management (battery), particularly in vehicles with alternative drives.

VST temperature sensor

The VST temperature sensor is used in applications where extremly fast response times are required, while still ensuring media compatibility.

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