Pressure switch V.S Pressure Transducer, what's the difference between pressure sensor and pressure switch
If you are not very clear about the relationship between pressure transducer and pressure transmitter, please check the article we posted last month.For your short review, we are wrapping things up below.
Customers have confused pressure switch and pressure transducers, which is why we have been questioned a lot.Consideration must be given to the fact that in many cases both definitions are interchangeable but they are different when it comes to safety performance.Understanding the differences can help you decide when to use a pressure switch or pressure transmitter.
If there isn't enough time, stop here to get a rough idea of the difference.
A pressure switch can complete the function of "on" and "off" when a pressure reaches the given limited high or low points, in case of that, it can open or close.
Pressure switch provide a simple mechanical switch linked to an on/off valve or pump which can effectively and reliably control the process at hand, keeping a tank from running dry or a temperature from climbing too high.
The most popular type of pressure switch is 0-220bar with an accuracy of 5%.Once given a certain pressure for example 80bar, this means that the condition can be alarmed anywhere between 69-91bar and the alarm may go off at a different pressure every time.
The only way to know if a pressure switch is working is to test it.To allow the pressure to fall below the low pressure alarm set point and if it's a high/low switch, connected to a pump, you have to physically disconnected the pipe.This type of testing can only be done manually during an annual inspection.
A pressure transmitter is an electromechanical device which continuously measure and communicate their assigned process variables over a range of values however, instead of signaling a switch, pressure transducer sends a read-out signal of what the specific pressure value is to a remote location.
The function of pressure switch is simple, so it always is deployed at some critical environment to implement key safety task, for example, oil wellhead can occur extreme high pressure spikes which probably lead to heavy blowout when pressure touch the limitation.A pressure switch can function well in this application to prevent it by triggering contact or break at preset points.
Pressure transmitters can be more sophisticated.The pressure transmitter can send a signal to a logic board or remote device via pre-installed software.It can be very useful for measuring the efficiency of pressure systems and can even be used as a safety switch, depending on how the software is set up to control the system.
When choosing between pressure switch and pressure transmitter, you should ask yourself the questions below.
The Pressure SensorSmart 420mA HART is required.
There is a country required.Georgia and S. Sandwich is a part of the USA.