The Walchem WPH310-3N1 controller is now obsolete and has been replaced by the WPH410-3N1U controller which now has integrated USB datalogging and software upgrade capability. Otherwise, both the WPH310-3N1 and the WPH410-3N1U have the same specifications with on/off control outputs, 120 VAC, pre-wired wph420 with 10’ cables, with (2) e90495 connectors for ew pumps, no 4-20 mA output, preamplifier (190783) w/10’ cable, pre-wired.
Please click here to view and/or purchase the new replacement controller and to view literature.
