Programmable Display Unit PDU-420 / PDU-421 / PDU-440

Programmable unit for measuring and displaying physical values, connecting to level transmitters with current or voltage output. Models PDU-420, PDU-421 and PDU-440.

Key features

Panel or wall mounting
Multiple relay outputs, optional analog output
Modbus RTU connectivity

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Input	current or voltage output of level transmitters
Display	4-digit LED
Outputs	up to 4 relays, optional isolated analog output
Loop supply	integrated for 4-20 mA loops
Communication	RS-485, Modbus RTU
Power supply	230 V AC or 24 V DC
Enclosure	IP40 (panel), IP65 (wall)

Panel or wall mounting
Multiple relay outputs, optional analog output
Modbus RTU connectivity

The unit receives the process signal from the connected transmitter (4-20 mA / voltage / digital), scales and converts it with the programmed characteristic, shows it on the display and, depending on the model, logs it and drives relay/analog outputs.

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