Oil pressure sensor (OPS)

For oil-pressure measurements in the transmission

Our oil pressure sensor OPS measures the oil pressure in transmissions of e. g. electric vehicles, in order to optimise the use of the engine power. It was designed to measure the absolute pressure inside the transmission housing, and is robust enough to be used with oil in the surrounding areas.

The electronics with digital output signal (SENT) transmit measurements precisely, safely and quickly. It was developed following the regulations of functional safety (ASIL / ISO 26262).

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FIELDS OF APPLICATION
  • Oil pressure measuring in transmissions
FEATURES

Robust and minimal design

  • Submersible, oil-proof design
  • Compatible with standard automotive transmission oils
  • Can be integrated into systems where space is critical
  • Lightweight due to its aluminum body

Digital evaluation electronics

  • ASIL capable SENT interface is available
  • Reliable and stable measurements over the entire service life
  • Can be used at temperatures of up to 140 °C
  • Tried-and-tested automotive EMC/ESD resistance
TECHNICAL SPECIFICATION
Measurement range
Nominal pressure 0.5–10 to 0.5–25 bar
Over pressure 2× nominal pressure
Burst pressure 3× nominal pressure
Pressure type Absolute
 
Electrical characteristics
Supply voltage 5 V±0.5 V
Current consumption max. 12 mA
Output signal SENT
 
Mechanical characteristics
Measuring element Silicon measuring element with resistive measuring bridge (MEMS)
Housing material Aluminium
Pressure connection Hex 24, M10×1.25
Thread Male thread
Electrical connection 4-pin RD plug or Yazaki 1)
Installation position Any
Weight Approx. 15 g
 
Accuracy
Total pressure error ± 2 % FS (0–100 °C)
± 2.5 % FS (–40–140 °C)
 
Environmental conditions
Operating temperature range –40 °C–140 °C
Media temperature range –40 °C–140 °C
Media compatibility Transmission oil
 
1) Other pressure and electrical connections available on request

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