Spirax PA420 Pre Amplifier - 4026100

SpiraxSKU: PHP54538

Sale price£897.27


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Manufacturer Part Numbers

Fulton Part Number: 15537

Spirax Sarco Part Number: 4026100

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What Does The PA420 Probe Do?

The PA420 preamplifier, used with a Spirax Sarco capacitance probe, is a loop powered two wire 4 - 20 mA level transmitter. It amplifies the capacitance measured and converts it to a 4 - 20 mA output proportional to the liquid level. It is compatible with all Spirax Sarco current input controllers / transmitters. The preamplifier consists of a tubular austenitic stainless steel body which screws onto the top of the probe, and has a Type A EN 175301-803 (DIN 43650) / ISO 4400 connector with Pg 11 cable gland.

The PA420 has two buttons and a dual coloured light (red and green) for use during commissioning.


For technical information on the Spirax PA420 please see the adjacent PDF

  • Compact, rigididly mounted.
  • Can be removed/replaced without disturbing the probe.
  • No maintenance needed.
  • Suitable for all probe lengths 370-1500mm.

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