Pressure Sensors

1
Pressure Sensors

• Reported By
• Shielamae C. Paculba
• ICS 30 B

2
Pressure sensor

• Pressure sensors contain sensing elements that
  consist of four piezoresistors buried in the face
  of a thin, chemically-etched silicon diaphragm

3
Pressure sensor cont.

• A pressure change causes the diaphragm to flex,
  inducing a stress or strain in the diaphragm and
  the buried resistors. The resistor values change
  in proportion to the stress applied and produce
  an electrical output.

4
Pressure Sensors

• Two types of pressure sensors can be
  distinguished Integrated capacitive pressure
  sensor ICs that contain the pressure cell and the
  signal conditioning circuitry monolithically
  integrated on one single chip and uncompensated
  discrete pressure sensors.

5
Typical Applications

• Medical equipment respiration, dialysis,
  infusion pump
• HVAC, data storage, and gas chromatography
  equipment
• Process controls
• Industrial machinery
• Pumps
• Robotics
• Off-road applications
• Applications that require precision pressure
  measurement.

6
Benefits of pressure sensors

• Specially developed for harsh industrial
  environments
• Robust enclosure in cartridge, box or block
  design IP 65 - IP 67
•  Exceptional resistance to shock, vibration and
  pressure peaks
• Wide range of pressure connections
• Ship approvals

7
Example of a pressure sensor