What Does The PA20 Probe Do?
The PA20 preamplifier is used with a Spirax Sarco capacitance probe to amplify the capacitance measured and convert it to a voltage output proportional to the liquid level. It is compatible with all Spirax Sarco voltage input controllers/transmitters.
The preamplifier consists of a tubular austenitic stainless steel body which screws onto the top of the probe, and has a DIN 43650 connector. The connector includes a ½" NPT adaptor for connection to flexible conduit and four 18AWG flying leads. The PA20 has three sensitivity settings, selected to suit different probe lengths by wiring variations. These are fully described in the Installation and Maintenance Instructions supplied with the unit.
For technical information on the Spirax PA20 please see the adjacent PDF
- Compact, rigididly mounted.
- Can be removed/replaced without disturbing the probe.
- No maintenance needed.
- Suitable for all probe lengths.
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