Mechanical; Wph/Wdp Variables And Their Limits - Walchem WDP420 Instruction Manual

2.3

Mechanical

Operating Ambient Temp
Flow switch manifold temperature rating
Flow switch manifold pressure rating
Flow switch manifold connections
2.4

WPH/WDP Variables and their Limits

Sensor menu
Temperature Menu
Control 1 -4 Menus
Minimum SPM Rate (Pulse Outputs only)
Maximum SPM Rate (Pulse Outputs only)
4-20 mA 1 and 2 Menus
Access Code Menu
Datalog Menu (Optional)
Config Menu (Optional)
Upgrade Menu
*Note: The Alarm relay is non-programmable. Refer to the Main Menu diagram for the list of error conditions
that trigger the alarm relay.
Enclosure Material Polycarbonate
NEMA Rating NEMA 4X
Dimensions 8.5" x 6.5" x 5.5"
Display 2 x 16 character backlit liquid crystal
32 – 122°F (0 – 50°C)
Storage Temperature -20 – 180°F (-29 – 80°C)
140°F (60°C) max
150 psi
¾" NPTF
Days Between Calibration
High or Low Set Point
High or Low Alarm Point
Dead Band (Relay Outputs only)
Proportional Band
Sample Period (Relay Outputs only)
Time Limit (Relay Outputs only)
Hold Time (Probe Wash)
On Time (Probe Wash)
4 & 20 mA Settings
New Value
Low Limit High Limit
0 days (no reminder) 59 days
No variables
-2 pH, -1500 mV 16 pH, 1500 mV
-2 pH, -1500 mV 16 pH, 1500 mV
0 pH, 0 mV 1.99 pH, 199 mV
0 pH, 0 mV 6.99 pH, 999 mV
0 strokes/minute 360 strokes/min
0 strokes/minute 360 strokes/min
0:01 min:sec 30:00 min:sec
0:01 min:sec 59:59 min:sec (enabled)
0=unlimited (disabled)
0 seconds 99 seconds
1 second 99 seconds
-2 pH, -1500 mV 16 pH, 1500 mV
0 9999
No variables
No variables
No variables
3