Pantech Instruments manufactures Expression Computation Module, model 838. Pantech Instruments is the manufacturer and exporters of Process Control Instruments. Expression Computation Module is designed to accept up to three inputs and provide a computed output of 4 - 20 mA DC capable of driving a load of up to 800as per the equation. The module accepts 4 - 20 mA DC signals from two wire and not two wire transmitters. The transmitter power supply to feed up to three two wire transmitters is also available in the Expression Computation Module. The module also accepts 1 - 5 V DC signals.
