Churchill Nano Link IP67, Technical Manual, Page: 15 / 42

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3.4.3.1.1 Potentiometer Interface
Some transducers incorporate a potentiometer that needs to be energised by a stable voltage, and returns a voltage that
varies from 0 to 100% of the energising voltage. A small interface module, designate 7023-1 is available to power a
potentiometer from a stable supply derived from the an & - output from
Nano_Link
, and convert the
potentiometer reading to a 0…100mV signal compatible with the analogue inputs on
Nano_Link
. The module is fitted
in a small housing that clips onto DIN rail adjacent to
Nano_Link
and incorporates Span and Offset adjustment.
Details of connections to this module, and the method of calibrating it, are given in Application Note AN009.
3.4.3.1.2 Voltage Output Transducers
A small number of transducers generate a voltage output, typically scaled 1…5VDC. A small interface module,
designate 7023-2 is available to convert this to a voltage in the range 0…100mV, compatible with the analogue inputs
on
Nano_Link
. The module is fitted in a small housing that clips onto DIN rail adjacent to
Nano_Link
and
incorporates Span and Offset adjustment.
Details of connections to this module, and the method of calibrating it, are available on request.