THI is a microprocessor controlled precision instrument displaying temperature of MV/HV transformers.
The unit offers one PT100 type temperature sensor input. This input may be used for the transformer or ambient temperature.
The unit determines the temperature by measuring the PT100 sensor resistance, 4-20mA or 0-10V input. The step information is displayed on the screen.
As option an internally generated 24VDC is used as a sensor converter supply voltage.
The supply inputs of the unit are isolated from measurement inputs. It operates between 85 -265 VAC or 80-250 VDC.