The IR89 is a microprocessor-controlled panel instrument with LED 96x96, with thresholds and alarms that may be programmed and configured by the user. In the two input channels it accepts signals coming from two distinct transmitters or from a double transmitter. The transmitters may be passive with 2 wires or active with 3 wires, in voltage 0+ 1 V, 0+5 V, 0+10 V or current 0+20 mA; 4+20 mA. For both input channels the configuration possibility is always present in the instrument, no extra cards are needed. The choice of configurations for the input signals is made on the keyboard located on the front of the instrument. The IR89 is provided with a serial output RS232C, the baud rate may be configured by means of the keyboard, the control is bi-directional and the output connector is a  SUB D female 9-pole connector. The instrument dimensions are in accordance with DIN 45700, 96x 96 mm, depth 120 mmo The operating mode of the IR89 is chosen according to the application, configuring the instrument with the keyboard. It is possible to configure the instrument on the field with maximum simplicity to adapt it to changes in the process requirements.
The configuration possibility concerns the inputs, the extent of the scales, the set points, the alarms and the baud rate.