Walchem WDP420 Instruction Manual

Walchem WDP420 Instruction Manual Manual pdf 5 page image

22.0 SPECIFICATIONS2.1 Measurement PerformancepH Range -2 to 16 pH unitspH Resolution 0.0015 pH units (0.01 pH displayed)pH Accuracy (Calibrated): ± .01 pHORP Range -1500 to 1500 mVORP Resolution 92 μV (1mV displayed)ORP Accuracy ±1 mVTemp Comp (optional): 100 or 1000 ohm platinum RTDTemperature Range 32-212°F (0-100°C)Temperature Resolution ±0.09°F (0.05°C)Temperature Accuracy ± 0.9°F (± 0.5°C)2.2 Electrical: Input/OutputInput Power 100-240 VAC, 50/60 Hz, 8AFuse: 1.0 ampere, 5 x 20 mmInput SignalspH/ORP ±1500 mVTemp Comp (optional) Pt100 or Pt1000Interlock (optional) Isolated, dry contact closure required (i.e., flow, level, etc.)OutputsPowered Relays Internally powered relays switching line voltage6 A (resistive), 1/8 HPAll relays are fused together as one group, total current for thisgroup must not exceed 6APulse Outputs Opto-isolated, Solid State Relay150mA, 40 VDC Max.VLOWMAX = .13V @ 18 mADry contact relays 6 A (resistive), 1/8 HPDry contact relays are not fuse protectedCTRL 1 CTRL2 CTRL 3 CTRL 4 ALARMWPH410 Powered Powered Dry Dry DryWPH420 Pulse Pulse Dry Dry DryWDP410 Powered Powered Powered Powered PoweredWDP420 Pulse Pulse Dry Dry DryWDP440 Pulse Pulse Pulse Pulse DryNote: The Alarm relay is non-programmable. Refer to the Main Menu diagram for the list of errorconditions that trigger the alarm relay.4 - 20 mA 1 or 2 (optional) Internally poweredFully isolated600 Ohm max resistive loadResolution .001% of spanAccuracy ± 1% of readingpH/ORP Preamp Power ±5 VDC, 5 mAAgency ApprovalsUL ANSI/UL 61010-1:2004, 2nd Edition*CAN/CSA C22,2 No.61010-1:2004 2 nd Edition*CE Safety EN 61010-1 2nd Edition (2001)*CE EMC EN 61326 :1998 Annex A*Note: For EN61000-4-6,-3 the controller met performance criteria B.*Class A equipment: Equipment suitable for use in establishments other than domestic, and those directlyconnected to a low voltage (100-240 VAC) power supply network which supplies buildings used fordomestic purposes.