Advantages Disadvantages Barometer sensor | Barometric sensor
This page covers advantages and disadvantages of Barometer sensor or Barometric sensor. It mentions Barometer sensor advantages and Barometric or Barometer sensor disadvantages.
Definition: The sensor device which measures pressure in order to determine altitude is known as barometer sensor. It is used in mobile phones and other electronic devices. The figure-1 depicts Barometric pressure sensor from Apogee Instruments.
SI unit of pressure is pascal. It can be expressed as follows.
1 Pa=1 N/m2
One pascal is equal to one newton of force uniformly distributed over 1 meter2 of surface.
A pascal can be converted into other units using following equations.
As there are different types of pressure sensors, the advantages and disadvantages vary with
these types as mentioned below.
• Mercury pressure sensor
• Piezoelectric pressure sensor
• Piezoresistive pressure sensor
• Strain gauge pressure sensor
• Capacitive pressure sensor
• Optoelectronic etc.
Refer pressure sensor basics and types >> for more information.
Advantages of Barometer sensor | Disadvantages of Barometer sensor
Following are the advantages of Barometer sensor and disadvantages of Barometer sensor of various types.
| force sensor type | Advantages | Disadvantages |
|---|---|---|
| Piezoelectric | ➨It generates voltage proportional to velocity of crystal applied.
Hence no local power source is needed. |
➨As they are higher in impedance, stray voltages are picked up
in connecting wires. ➨Crystal gets cracked if subjected to overstress. |
| piezoresistive | ➨It is very thin and flexible in
construction. ➨It uses inexpensive electronics. ➨It is readily available and can be customized. ➨It is light in weight. ➨It requires low power for its operation. |
➨It has lower accuracy ( about +/-5% full scale)
compare to load cell. ➨It requires calibration by user. |
| Strain gage (mechanical displacement into change in resistance) | ➨No moving parts used ➨Smaller in size ➨Inexpensive |
➨Non-lineaer ➨requires calibration |
| Capacitive | ➨It reduces interference from
the signal. |
➨Reduces voltage slightly and
interfere with direct current flow. |
Advantages and Disadvantages of other Sensor Types
Different types of Sensors Related links
Article on Sensors and Transducers>>
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