The Walchem WDP310-52N controller is now obsolete and has been replaced by the WDP410-52NU controller which now has integrated USB datalogging and software upgrade capability. Otherwise, both the WDP310-52N and the WDP410-52NU have the same specifications with with 4 on/off control outputs and diagnostic alarm relay, hardwired, cable glands, two isolated analog (4-20 mA) outputs, no electrode.
Please click here to view and/or purchase the new replacement controller and to view literature.
