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Two-wire isolating repeater

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article image The Q509 isolating repeater.

THE Q509 isolating repeater is a new way to power a two-wire field transmitter while isolating the 4-20mA signal using only two wires and a two-wire loop powered isolator.

The output from the Q509 is a standard 4-20mA, two-wire output loop powered signal. However, unlike other two-wire transmitters, the Q509 is able to generate an auxiliary power supply at its input to power a standard two-wire loop powered field device, thus reducing the need for an extra power supply while eliminating unnecessary wiring.

This feature makes it ideal for retrofit applications where no extra power sources are available.

The module provides 1.8kV isolation and can be supplied from any power supply in the range of 24 to 48V dc. This makes the Q509 ideal for interfacing with standard non-isolated 4-20mA PLC inputs.

The Q509 is available in single and dual channel units both 22.5mm wide for space saving and can be mounted onto both 35mm and 32mm DIN rail. Eurotherm Australia 02 9634 8444.

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