Interested to Buy Any Domain ? << Click Here >> for more details...
how the presure switches are calibrated? and what happen
inside?
- 1 Answers
- 5944 Views
- I also Faced
- E-Mail Answers
Answer Posted / sam
a Pressure switch is just a small diaphragm that moves as
the pressure increases. This diaphragm is pushing a small
pin upwards and the pin is pushing a micro switch to close.
Obviously if the pressure decreases again, the pin goes down
and the switch will open again. So based on this information
it is easy to see that you just need to supply pressure to
this diaphragm with a hand pump, put your multimeter on the
switch contact in order to see when the switch open or
closes and and make the adjustment on the switch until it
switches at the point where you need it to switch. The
adjustment is normally in the form of a spring.
Increasing or decreasing the tension on this spring will
change how high or low pressure is needed to move the diaphragm.
The only thing that you need to remember when working on
pressure switches, is that if you want to calibrate the
switch as a pressure switch low you need to pump the switch
up higher than your required switching point and then
decreases the pressure slowly until the switch changes
state. The same if you want to use it as a pressure switch
high, you then need to start with a low pressure and
increase your pressure slowly until the switch changes state.
Good luck
| Is This Answer Correct ? | 18 Yes | 0 No |
Post New Answer View All Answers
We Have Two Field bus Pressure Transmitters of Different Sensor Range (I.E One is of Lower range and Another is of Higher Range).Is same Process Line. My Question is Can i provide Saturation Limit to my field Bus Transmitter as We can provide Saturation current limit to HART Instruments. As During Low Pressure Both Working OK ,But During High Pressure, transmitter with Lower sensor range Goes to Fault mode as Beyond its Sensor Limit it can Measure, So may I provide Saturation point Some where to Suppress This Fault during High Pressure.
Which language of programing is popular? how can i learn it ?
Name different parts of a pressure gauge.
how do u calibrate the vacuum transmitter if it shows more reading
few questions on RS 232,1 question on relationship of impedance and turns ratio, many questions on flowmeters
What is the cascade control
What are the types of control valves available
How it the difference between force balance system and dispalacement balance system?
What is cut off relay? And why use in PLC and DCS?
how u choose thermowell lenght n pnumatic C/v size?
What is the calibration procedure of Drum level transmitter if range is 0 to -400 mmh2o in lab?
Calibration of controller (pneumatic)
what is the field bus calble ? what are diffrences in orang colur cable and black coular calble ?
how many types of preheaters are in cement industry & what r they can any body explain?
please tell me what is a light up procedure of Cfbc boiler and what it's axuillaries of cfbc boiler?
