Conductivity Controllers Products
Hawker Electronics have continually improved upon the original conductivity level control principle to provide today the most comprehensive and reliable range of level controllers and associated hardware. Our controllers are unique in their design because of their close switching differential. This allows them to operate in contaminated liquids such as those with the presence of foam, wet rags and sewage.All our controllers employ low voltage AC in the electrode circuit and are available in AC or DC supply voltage supplies. ATEX approved equipment is also available.
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
This ability to ignore electrode contamination makes the Hawker controllers operate successfully in heavily contaminated liquids such as Combined Sewer Overflows ( CSOs) sewage and chemical applications
P4 Plug in Level Controller for Panel Mounting
Plug in (via DIN base) level controller with close switching differential suitable for the majority of applications. Fully adjustable sensitivity between 100 ohms to 18,000 ohms. Switch selectable fail to safe operation with LED indication. Two sets of volt free changeover contacts with LED for relay operation and also a power on LED. Moulded retaining clip for secure fixing of the unit to the DIN base. High sensitivity version available to 800,000 ohms. Supply voltage 110, 230 or 24v AC.
DC1/P Controller for 24 volt DC operation
DIN rail mounted level controller with close switching differential. Fully adjustable sensitivity between 200 ohms to 18,000 ohms. Switch selectable fail to safe operation. One set of volt free changeover contacts with LED for relay operation and also a power on LED. Selectable Timer to allow run on/run off and avoid problems due to wave action/splashing. AC signal to the probes to avoid electrolysis. Supply voltage 24v DC.
P7 IS ATEX Approved Controller
ATEX certified (to Zone 0) DIN rail mounted level controller with close switching differential. Fully adjustable sensitivity between 300 ohms to 18,000 ohms. Fail safe (High or Low) is factory set. One set of volt free changeover contacts with LED for relay operation. Internal galvanic isolation requiring no further I.S. barrier protection. Supply voltage 110, 230 or 24v AC.
AC1 & AC1/P Controller for wall & panel mounting
Level controllers with close switching differential available with two options. AC1 for wall mounting supplied fitted into an IP66 enclosure or the AC1/P for panel mounting. Both units have fully adjustable sensitivity between 100 ohms and 18,000 ohms and a switch selectable fail safe operation. Two sets of volt free changeover contacts with LED for relay operation and also a power on LED. Tropicalised version available for hot, humid atmostpheric conditions. AC1 and AC1/P are also available as ACJ and ACJ/P for long distance operation applications beyond 1 kilometer. Supply voltage 110 or 230vAC.
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