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Pressure sensors are devices that are meant for measuring the pressure. The measuring applies to any liquid or gas. When the level of substance has reached a certain limit and has even passed over it, the device translates the force generated into an electric signal. This signal is interpreted by a computer and in this way the measurement is made.
Not only the direct force can be calculated, but also other parameters will be obtained indirectly. This involves the level of fluid in the container, the speed of flowing and others. Any type of information can be provided by these readers. The measurement can be static and dynamic.
Since the steam age, these equipments were very much used and demanded. And were used until now, when they have the same popularity. They can be categorized through the functioning principles in three types: strain gage, piezoelectric and variable capacitance.
These equipments can be found under various types and designs. They can be of high performance or of lower performance but cheap. They can be different because of the measurement ranges or temperature ranges. As an example of high performance pressure sensor, the dynamic devices which detect fast modifications in speed and pressure are the ones. They are built from quartz crystals (piezoelectric).
Strain gage devices are constructed from 2 parts: the diaphragm and the strain gauge. When the force created by the fluid increases, the diaphragm detects the modification and it sends a signal to the strain gauge. Now the strain gauge will resist the force. Then the resistance force generated will be measured by a Data Acquisition System or DAQ.
When it comes to the devices that use variable capacitance, these are made of two metal plates. Actually it is one metal plate and a metal diaphragm. When the force changes, the distance between the plates changes as well and this indicates the difference in pressure. Like the accelerometer, these devices are more stable than others but they do not function well in high temperature conditions. Also they are harder to assemble then the other types.
Being made of quartz crystals, the piezoelectric sensors use the properties which are owned by these crystals from nature. They have this feature that allows them to make an electrical charge when they detect a force increase. The signal created must be amplified with the proper circuitry. They are not as resistant as other materials to vibration exposure or to any type of shock.
The signal which is transmitted by the device is weak in the majority of cases. The measure unit is mV= 0,001 Volts. The voltage outputted depends on the force intensity. A voltage equal to zero means a pressure level that is zero (zero Bars). The signal does not exist in this case. But when the value is 5V the corresponding value will be 5 Bars.
Nowadays pressure sensors have a very high range of use, they are commonly used in the food industry, for example. With no exceptions, they have the role of measuring the forces made by the fluids. They are also able to detect the flow and the fluid level.
Not only the direct force can be calculated, but also other parameters will be obtained indirectly. This involves the level of fluid in the container, the speed of flowing and others. Any type of information can be provided by these readers. The measurement can be static and dynamic.
Since the steam age, these equipments were very much used and demanded. And were used until now, when they have the same popularity. They can be categorized through the functioning principles in three types: strain gage, piezoelectric and variable capacitance.
These equipments can be found under various types and designs. They can be of high performance or of lower performance but cheap. They can be different because of the measurement ranges or temperature ranges. As an example of high performance pressure sensor, the dynamic devices which detect fast modifications in speed and pressure are the ones. They are built from quartz crystals (piezoelectric).
Strain gage devices are constructed from 2 parts: the diaphragm and the strain gauge. When the force created by the fluid increases, the diaphragm detects the modification and it sends a signal to the strain gauge. Now the strain gauge will resist the force. Then the resistance force generated will be measured by a Data Acquisition System or DAQ.
When it comes to the devices that use variable capacitance, these are made of two metal plates. Actually it is one metal plate and a metal diaphragm. When the force changes, the distance between the plates changes as well and this indicates the difference in pressure. Like the accelerometer, these devices are more stable than others but they do not function well in high temperature conditions. Also they are harder to assemble then the other types.
Being made of quartz crystals, the piezoelectric sensors use the properties which are owned by these crystals from nature. They have this feature that allows them to make an electrical charge when they detect a force increase. The signal created must be amplified with the proper circuitry. They are not as resistant as other materials to vibration exposure or to any type of shock.
The signal which is transmitted by the device is weak in the majority of cases. The measure unit is mV= 0,001 Volts. The voltage outputted depends on the force intensity. A voltage equal to zero means a pressure level that is zero (zero Bars). The signal does not exist in this case. But when the value is 5V the corresponding value will be 5 Bars.
Nowadays pressure sensors have a very high range of use, they are commonly used in the food industry, for example. With no exceptions, they have the role of measuring the forces made by the fluids. They are also able to detect the flow and the fluid level.
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Choose from a wide selection of state-of-the-art scientific technologies including the linear position sensor, calibration systems, load cells, mass flow sensor, and accelerometer. These specialized tools are very popular among the research and development industries.
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