Walchem WDP420 Instruction Manual

Walchem WDP420 Instruction Manual Manual pdf 6 page image

32.3 MechanicalEnclosure Material PolycarbonateNEMA Rating NEMA 4XDimensions 8.5" x 6.5" x 5.5"Display 2 x 16 character backlit liquid crystalOperating Ambient Temp 32 – 122°F (0 – 50°C)Storage Temperature -20 – 180°F (-29 – 80°C)Flow switch manifold temperature rating 140°F (60°C) maxFlow switch manifold pressure rating 150 psiFlow switch manifold connections ¾" NPTF2.4 WPH/WDP Variables and their LimitsLow Limit High LimitSensor menuDays Between Calibration 0 days (no reminder) 59 daysTemperature Menu No variablesControl 1 -4 MenusHigh or Low Set Point -2 pH, -1500 mV 16 pH, 1500 mVHigh or Low Alarm Point -2 pH, -1500 mV 16 pH, 1500 mVDead Band (Relay Outputs only) 0 pH, 0 mV 1.99 pH, 199 mVProportional Band 0 pH, 0 mV 6.99 pH, 999 mVMinimum SPM Rate (Pulse Outputs only) 0 strokes/minute 360 strokes/minMaximum SPM Rate (Pulse Outputs only) 0 strokes/minute 360 strokes/minSample Period (Relay Outputs only) 0:01 min:sec 30:00 min:secTime Limit (Relay Outputs only) 0:01 min:sec 59:59 min:sec (enabled)0=unlimited (disabled)Hold Time (Probe Wash) 0 seconds 99 secondsOn Time (Probe Wash) 1 second 99 seconds4-20 mA 1 and 2 Menus 4 & 20 mA Settings -2 pH, -1500 mV 16 pH, 1500 mVAccess Code Menu New Value 0 9999Datalog Menu (Optional) No variablesConfig Menu (Optional) No variablesUpgrade Menu No variables*Note: The Alarm relay is non-programmable. Refer to the Main Menu diagram for the list of error conditionsthat trigger the alarm relay.