I am planning to develop a test rig to control the valve opening and closing. The input signal for the control system is SSI input from absolute encoder and voltage (up to 5V) from pressure sensor (or 4-20mA current). The output from the control system is ON/OFF voltage signal (24VDC) to open and close the valve. Can anyone advise me what are the suitable instruments to be used & to link between all those devices (sensors and valves) to the controller and laptop/PC?

I forgot to mention about the system requirement:

1) The control system needs to measure the absolute encoder running at a pretty high speed of maximum of 2000 rpm.

2) It also need to capture / read data of approximately every 0.1ms.

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