The Walchem WBL410-1N5N controller is now obsolete and has been replaced by the WBL410-1N5U controller which now has integrated USB datalogging and software upgrade capability. Otherwise, both the WBL410-1N5N and the WBL410-1N5U have the same specifications with bleed & four feeds plus alarm, 120 VAC, prewired, no 4-20 mA output, standard electrode (up to 250 psi), integrated datalogging and config file import/export via USB flash stick.
Please click here to view and/or purchase the new replacement controller and to view literature.
