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Pump and Valve Control a using multi holder

Control of 1 pump/valve between 2 levels fixed by electrode lengths using multi holder

A multi electrode holder is an ideal space saver and it cuts down on the installation costs. However you should only use a Multi electrode holder for clean liquids

Hawker Electronics can offer you a range of multi holders for small sumps and double skinned vessels up to larger tanks.

We can offer a range of electrode for chemical applications.

The principle is exactly the same as single electrode holders in that you need to have active electrodes for on/off control or open/close valves or high/low alarms.

Some multiholders can have up to 5 electrodes to give you for example pump control plus high and low alarm or 2 pump control plus high alarm.

Using a fixed probe system means there are no moving parts to jam or go wrong.

Cut the electrodes at the point where you want something to happen
If there is any insulation on the electrodes strip back about 50 mm ( 2 inches) and expose the bare metal underneath.
Ensure you have an earth return. This can be the metal tank or the submersed pump or another electrode. If using an earth electrode it must always be the longest electrode in the tank. But it only needs to be slightly longer than the next electrode.
Remember to use the Hawker level controller which is the brains to make a repeatable reliable system.It is designed to ignore electrode contamination.
If you would like to see a video clip about the controller's ability to ignore ragging then follow this link http://www.youtube.com/watch?v=63z8LmPD4ks and if you would like to see a video clip about the controller's ability to ignore foam then follow this link
http://www.youtube.com/watch?v=Z9URP0B-4I8