Even in modern hybrid or electric vehicles, heat is produced as a waste product, or heat and cold are required to supply the power electronics, the drive, the battery and also the passenger compartment with the optimum temperature in each case.
To coordinate these extensive tasks of the cooling system, an elaborate and complex thermal management system is required.
Due to the large number of tasks, a correspondingly large number of components are involved here. The difficulty is that various pressure drops occur at each component involved and in the piping system. However, in order to keep efficiency high, the cooling system is operated with the lowest possible system pressure, which in turn means that any pressure drop disrupts this system.
The thermal management of a vehicle is designed by means of complex CFD simulations. This design is based on manufacturer specifications for the individual components installed in the thermal management system, such as radiators, power electronics, motors and many more.
In order to be able to precisely examine all components and lines regarding their influence in the cooling system, DDM has developed a differential pressure sensor suitable for road tests.
The PV 2722 is compact, media resistant on both sides and temperature compensated, so that it can be used in the temperature range from -40°C to +125°C at almost any location in the vehicle and test bench.
To accurately measure the amount of coolant circulating in the thermal management system, DDM offers a specially developed turbine flow measurement system. This system consists of the space-saving turbine VCT, which is equipped with a Type T thermocouple in contact with the media, and the flow computer VCA, which is used for linearization and viscosity correction.
excl. 19% VAT plus shipping costs
Ø: 27 mm
Measurement range: 100 mbar bis 3,5 bar (Any ranges in between; Bidirectional)
Output: 0 to 5 V or 1 to 6 V
Comp. Temperature Range: 0 to +50°C, -20 to 80°C or -40 to 125°C
Pressure connection: M10x1
excl. 19% VAT plus shipping costs
Datasheet
pdf | 368 KB
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excl. 19% VAT plus shipping costs
Hose connection Ø: 9,8 to 32mm
Measurement range: 0,1 to 350l/min
Repeatability: ± 0,025 % of reading
Temperature probe media exposed: Type T thermocouple
excl. 19% VAT plus shipping costs
Datasheet
pdf | 314 KB
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excl. 19% VAT plus shipping costs
Input signal: max. 2,5 kHz (TTL)
Accuracy: ± 0,1%
Operating temperature range: -40 to +125°C
Output: 0 to 10V
excl. 19% VAT plus shipping costs
Data sheet
pdf | 257 KB
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