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About Pressure Transduers
Pressure transducers are devices produced by pressure
transducer manufacturers that convert the mechanical force of applied
pressure into electrical energy. This electrical energy becomes a signal
output that is linear and proportional to the applied pressure. Pressure
transducers are very similar to pressure sensors and transmitters. In
fact, pressure transducers and pressure transmitters are nearly synonymous.
The difference between them is the kind of electrical signal each sends.
Pressure transducers sends a signal in volts (V) or millivolt per volt
(mV/V), and a transmitter sends signals in milliamps (mA).
Pressure transducer manufacturers can fabricate both pressure transmitters
and pressure transducers that convert energy from one form to another
and give an output signal. This signal goes to any device that interprets
and uses it to display, record or alter the pressure in the system. These
receiving devices include computers, digital panel meters, chart recorders
and programmable logic controllers. There are a wide variety of industries
that use pressure transducers and transmitters for various applications.
These include, but are not limited to, medical, air flow management,
factory automation, HVAC and refrigeration, compressors and hydraulics,
aerospace and automotive.
There are important things to consider when deciding what kind of pressure
transducers to choose. The first consideration is the kind of connector
needed to physically connect the transducer to a system. There are many
kinds of connectors for different uses, including bulletnose and submersible
connectors, which have unique applications. Another important part is
the internal circuitry of the pressure transducers unit, which is housed
by a “can” that provides protection and isolates the electronics.
This can be made of stainless steel or a blend of composite materials
and stainless steel. The various degrees of protection extend from nearly
no protection (an open circuit board) to a can that is completely submersible
in water. Other kinds of enclosures safeguard the unit in hazardous areas
from explosions and other dangers.
The next thing to consider is the sensor, which is the actual component
that does the work of converting the physical energy to electrical energy.
The component that alters the signal from the sensor and makes it suitable
for output is called the signal conditioning circuitry. The internal
circuitry must be resistant to harmful external energy like radio frequency
interference, electromagnetic interference and electrostatic discharge.
These kinds of interferences can cause incorrect readings, and are generally
to be avoided when doing readings. Overall, pressure transducers are
well-performing and high-accuracy devices made by pressure transducer
manufacturers that make life easier for many industries.
Featured
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Types of Pressure Transducers
- have an inner reference
chamber sealed at or close to 0 psi (full vacuum), and typically supply
increasing output voltage for increases in pressure.
- are instruments that detect fluid pressure and produce an electrical, mechanical, or pneumatic signal in response to the pressure.
- perform well, for a wide range of electronic
pressure measurement applications. They have a high-accuracy rate.
- fit most industrial pressure measurement
applications. The printed circuit board is potted in silicone gel for
protection against shock, vibration and humidity, and uses state of
the art surface mount technology.
- are instruments that detect fluid pressure.
- is used to measure, monitor, and transmit the pressure of liquids or gases.
- convert
pressure into an electrical signal by physically deforming strain gages,
which are bonded into the
diaphragm
of the pressure transducer. This introduces strain to the gages,
which then will produce an electrical resistance change proportional
to the
pressure.
- are specifically
designed for municipal liquid level measurements and a range of
other applications. Specifically, these transducers are used for water
and wastewater treatments, well depth measurements and offshore
water
depth
measurements, and therefore use a watertight, high-strength vented
polyurethane cable, which is capable of complete submersion.
- are instruments that measure torque on rotating systems.
- are devices that convert one type of energy into a different output form.
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