Indicators of the I.S.I. (Isolated Signal Indicators) series have been designed for general purposes and offer a large variety of input signals combined with the advantage of galvanic separation of the input signal and the supply voltage thus preventing ground loop problems. They come in two executions that only differ in size:
Both types are based on the same DC servomotor principle and require an external signal source e.g. 4-20mA as well as a 24VDC supply voltage to make them operational. Standard signal inputs are 4-20mA or 0-10V, other signals on request. The +24VDC LED dial illumination can be dimmed externally.
Available options:
Telegraph
Tillers PMA Control unit
