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Providing
you all the information about temperature measuring devices, flow measurment
devices and other Industrial Insturmatentation and Control devices. We came
up with this site in our quest to give to the world unbaised information
on thermometers, thermocouples, temperature control devices, microscopes,
telescopes, sensors and other switches. |
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A temperature
transmitter is an ideal solution for many remote temperature measurement
applications. Common temperature sensing devices such as thermocouples
and RTDs produce very small "signals". These sensors can be
connected to a transmitter that will amplify and condition the small
signal. Once conditioned to a usable level, this signal can be transmitted
through ordinary copper wire and used to drive other equipment such as
meters, dataloggers, chart recorders computers or controllers.
Available
in all standard calibrations for thermocouples & RTD's
- Transmitters provide a two-wire output with the same wiring
used for power and output.
- A rugged
metal enclosure, suitable for field mounting, offers environmental protection
and screw terminal input and output connections.
- These
transmitters are linearized to the voltage signal produced by the
thermocouple or RTD.
- The
two-wire transmitters convert the thermocouple or RTD signal to a 4-20
mA output signal.
- Analog
Transmitters are available with dip switch selection for several thermocouple
types per model, as well as thermocouple and RTD selection on
a signal model.
- Two-wire
transmitters are available in either isolating or non-isolating
models.
- Two-wire
transmission permits remote mounting of the transmitter near the sensor
to minimize the effects of noise and signal degradation to which low
level sensor outputs are susceptible.
Pressure transmitter
Pressure transmitters are used to collect and relay data from remote places.
Before selecting a pressure transmitter you should have the following
things in mind.
Understand your application. Examine the particulars of your application.
Is it necessary to know if the pressure is negative or positive? Do you
need to know the difference in pressure between two points? Answering
these questions as well as others about your application will go a long
way in helping select the right pressure transmitter. Having the right
type of pressure transmitter for your application is essential to get
the results you want.
- Pick the best transmitter for the right medium. Selecting
the transmitter with wetted parts that are compatible with the medium
to be measured helps to ensure a long-lasting measurement solution.
- Economics is also a part of engineering. Selecting the most accurate
parts, the longest-lasting parts, and the parts constructed with only
the best materials will drive up the price tremendously.
- Consider the range before you select the transmitter. Picking an accurate
device for your particular application is a good start, but picking
the wrong range can undo everything you are trying to accomplish. For
instance, selecting a pressure transmitter with a range of 0 to 100
psi with an accuracy of +/- 0.5% to be used to measure a pressure that
may reach a maximum of 10 psi is probably not a good idea.
- What kind of output signal do you need? In the building automation
industry there are generally two different analog signals used, 4-20
mA and DC voltage. Transmitters are usually available in both versions.
However, any 4-20 mA signal can be converted to a voltage signal with
the use of a resistor.
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