Oil pressure and temperature sensors

Electrics and ElectronicsSensors & actuators

It’s always better to measure twice: The HELLA oil pressure and temperature sensor (OPS+T) is based on a multi-chip module (MCM) and simultaneously measures two important parameters that are essential for reliable engine function: the absolute oil pressure and the oil temperature.

 

The latter is measured by the OPS+T via a diode integrated in the MCM directly in the main oil duct behind the oil filter. The absolute oil pressure is measured by a piezo-resistive cell. Both values are continuously recorded and reported to the higher-level control unit for evaluation. The pressure value is used to control the mechanical or electronic oil pump – for reduced consumption and lower CO2 emissions. The oil temperature is a key parameter for the thermal management control of the engine, and contributes significantly to smooth engine operation.

 

Both oil temperature and pressure are transmitted from the OPS+T to the engine control unit via a PWM (pulse width modulation) output signal. The multi-chip module is extraordinarily robust and, thanks to the patented technology, absolutely leak-proof against oils.

Product Advantages

  • Continuous measurement of oil pressure
  • Continuous measurement of oil temperature
  • Robust and reliable design

Technical Data

Temperature range -40 °C to +150 °C

Max. temperature

160 °C (max. 100 h)

Supply voltage

4.75 –  5.25 V
Output signal PWM

Response time

2 ms

Sampling frequency

< 3 kHz

Max. operating pressure

40 bar

Overpressure

60 bar

Pressure measuring range

0.5 to 10.5 bar

Temperature measuring range -40 °C to +160 °C
Protection class IP 69 K

Program Overview

Variant Supply voltage Part number Packaging unit
Sensor with screw thread, M12 x 1.5 4.75 – 5.25 V 6PR 010 378-201 / -207 1 / 120

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