DESCRIPTION and  SPECIFICATIONS
WRD temperature / relative humidity control was designed as pin-for-pin replacement for existing unit. Additional operating and service features were provided at a substantial per-unit cost savings. Features include improved accuracy and internal calibration for quality control, and easy field service. Temperature accuracy of +/-3F and relative humidity of +/-5 were obtainable by using calibration tests to verify accuracy of mechanical meters and set-point knobs. Switches on the control panel inside the proofer box easily initiate tests.