Spa instruments offers micro controller-based process indicating controller of series pi 020 for monitoring and controlling process i variables of all engineering units like temperature, rh, pressure, level flow, rpm, etc, with all electrical inputs such as ma, mv, volts, frequency, rts, thermocouples. With the help of 3-1/2 digits 7-segment red led, it makes very easy to read the process variable, also if any parameter to be controlled. High and low set points can be provided in-built for alarm purpose. Through membrane keypad one can set these high and low set points of the parameter and 1 c/o relay outputs is provided for the purpose of alarm output.
