Pressure Sensor Air PSB-4

This sensor is designed to measure absolute air-pressure, especially the air box and boost pressure of gasoline or Diesel engines over a wide range.

An integrated circuit combines a piezo-resistive sensor element, electronics for signal-amplification and temperature-compensation. The output of the sensor is an analog, ratio metric signal.

The main feature and benefit of this sensor is the combination of the high quality of the production part and an individual calibration. Each sensor is delivered with a calibration sheet to enable very small measurement tolerances. Furthermore the sensor has a very short response time.


  • Application: 0.5 to 4.0 bar
  • Response time: 0.2 ms
  • Pressure reference type: Absolute
  • Power supply: 5 V
  • Weight: 20 g



0.5 to 4 bar (a)

Pressure reference type


Max. pressure

6 bar

Operating temp. range

-40 to 130°C

Media temp. range

-40 to 130°C

Storage temp. range

-40 to 130°C

Max. vibration

20 m/s2 at 10 to 1,000 Hz

Technical Specifications

Mechanical Data




12.05 mm

Weight w/o wire

20 g


O-ring 7.59 x 2.62 mm

Electrical Data

Power supply US

4.5 to 5.5 V

Max power supply US max.

16 V

Full scale output UA at 5 V

0.3 to 4.8 V

Current IS

9 mA


Response time T10/90

0.2 ms

Compensated range

0 to 80°C

Tolerance (FS) at US = 5 V

± 0.056 bar

Tolerance (FS)

± 1.4 %


1,143 mV/bar
(an individual calibration sheet will be delivered)


-71 mV
(an individual calibration sheet will be delivered)


Expansion of Tolerance

Connectors and Wires



Mating connector


F 02U 000 228-01

Pin 1


Pin 2


Pin 3


Pin 4


Pin 5


Various motorsport and automotive connectors are available on request.



Wire size

AWG 24

Wire length L

15 to 100 cm

Please specify the required wire length with your order.

Installation Notes

The PSB-4 is designed for engines using ROZ95, ROZ98, M15, E22 and Diesel.

The sensor can be connected directly to most control units.

Use engine oil (5W40) as O-Ring grease (no silicone based grease).

Avoid miss-pinning (max. 5 minutes at I = 0.3 A).

Please note that the 6mm tube connector has no function.

To optimize the accuracy of this sensor, an individual calibration sheet is delivered with each sensor.

Please find further application hints in the offer drawing.

Free download of the sensor configuration file (*.sdf) for the Bosch Data Logging System

To avoid damage caused by condensate the maximum mounting position from vertical is +-60°.

Safety Note

The sensor is not intended to be used for safety related applications without appropriate measures for signal validation in the application system.

Ordering Information

Pressure Sensor Air PSB-4

Order number: B 261 209 348-01