Problem:

Compressor is equipped with UNISAB II where are connected all pressure and temperature probes with output signal in mA (4-20) except two probes for Vi and Capacity with output signal in volts (0-12V) which is not recognized by UNISAB II.

Originally compressor has a Gram-Matic 2502 replaced with UNISAB II (because Gram-Matic PLC is not in production for many years), but we cannot connect Vi and Capacity probe due to mismatch of output signals... what to do now ...

Q:

1. Is it possible to order original probes (Vi & Capacity) for this type of compressor with output signal in mA for direct connection to UNISAB II....

2. Is it possible to use signal converter to convert voltage signal into mA signal ...

3. Some other solution to above problem....


Thanks for your input.

Best regards, Josip