Part name: Crankcase Pressure Sensor
Eltek crankcase pressure sensor is suitable for detecting the overpressure of engine oil in the crankcase. This overpressure is due to a diesel leakage in engine oil. Suitable for PC-LD and Truck applications. Chemical resistance is guaranteed by means of approved materials. The sensitive element is a ceramic element capable of detecting relative or absolute pressure, integrating a signal conditioning IC, which is directly assembled on the sensor. All the active and sensing electonic circuits are not in contact with the engine oil. The sensor output is ratiometric with the power supply. Calibration procedure, fault conditions management, ESD and EMI requirements are guaranteed by means of an approved IC according to automotive standards.
General characteristics:
  • Temperature Compensated (3 points)
  • Pressure Compensated (2 points)
  • Custom Calibration by Conditioning IC
  • Analog or Digital Output
  • Automotive Designed
  • HV, RP and Short Circuit Protection
  • Safety and Diagnostic Functions
  • Long Term Stability
  • Low Power Consumption
  • Piezoresistive Technology (Thick Film)
  • Real Time Measure
  • Electric custom connection
  • Custom Hydraulic Port (stailess steel)
Technical data:
Accuracy ± 1,5% F.S 0°C... 80°C and 0,4 bar abs...1,4 bar abs
± 2,5% F.S -40°C...0°C / 80°C...125°C and 0,4 bar abs...1,4 bar abs
Pressure Range 0,4 bar.........1,4 bar absolute
(other pressure ranges available on demand)
Max Continuous Pressure 2,8 bar
Burst Pressure 5 bar
Operating Voltage (nominal) 5.0 ± 0,25 V
Maximum Voltage -18V....+32V
ESD (ISO 10605): ± 15KV Air discharge
± 8KV Direct contact
Diagnostic Functions output goes above
4,8V and/or below 0,2V in case of failure
Supply Current < 10 mA
Output Voltage (Vout) 0,5V....4,5 V ratiometric
Digital Standard I2C
Digital Custom OWI
Response Time from 10% to 90% <10 ms
Temperature Range -30°C....+130°C
(+ 150°C for 30 min)
Insulation Resistance min 10 MΩ
Medium Engine oil