Hydac HDA 5500 series digital display units

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The digital display units in the HDA 5500 series are microprocessor-controlled display and monitoring instruments designed for control panel installation.

Different versions are available with a maximum of three analog inputs, an analog output (4-20 mA or 0-10 V) and up to four relay outputs. The analog input signals are displayed according to the settings selected by the user. Each of the relay outputs can be allocated to each of the sensor inputs or to the differential between inputs 1 and 2.

A PT 100 temperature probe can be connected directly to the instrument. There is also an option for frequency measurement using the Hydac HDS 1000 rpm probe; eg, to measure the speed of rotating components. Depending on the model, it is also possible to connect SMART sensors (condition monitoring sensors). SMART sensors are a generation of sensors from HYDAC which can transmit several different measured values.

The HDA 5500 series instruments have an accuracy of ±5%, as well as a clear 4-character, 7-segment LED display and an RS232 interface. The units can be powered from a 12-32 VDC supply or 85-265 VAC.