ifm effector SR5900 flow sensor
Abdul03 said:
...Can anyone tell me, what is the best procedure to test a flow switch. I know we can test it by connecting it where it needs to be and giving the exact flow of water. However, I would like to test it before I use it anywhere.
...It is a flow Sensor ON & OFF and the model number is "SR5900"...
Using the default settings and manually forcing air or water through the sensor may test that the flow sensor actually switches the output, but it may not perform as expected when you fit it to your application proper.
In case you're not aware, and when you do fit it to your application...
The SR5900 flow sensor controller is not a simple flow switch. One where you can pass medium through it and simply check a circuit is closed or not and all is well. First you have to calibrate the High and Low flow rates. This requires passing the expected High and Low flow rates, for your application, through the sensor. This sets the correct min./max. working range. Then the switching setpoint can also be adjusted within that range. You can also select whether it switches normally open or closed. These are some of the important specs...
Flow monitoring
- output switches ON when flow is present (for output function = normally open)
- output switches OFF when flow is present (for output function = normally closed)
Liquids
Setting range [cm/s]....................3...300
Greatest sensitivity [cm/s]............3...60
Gases
Setting range [cm/s]....................200...3000
Greatest sensitivity [cm/s]............200...800
Optical function indication.............LED bar display
Response time
........................1...10
When you are pre-testing it...
The default switching setpoint is LED bar 7 of 9 on the display. You will have to pass a high enough flow rate to reach this LED bar, or above, before the output will switch for you, indicating proper flow. You could initially set this lower, so as to not need as high a flow rate for your test.
Regards,
George