27th Edition RHFS Product Guide - Ryan Herco Flow Solutions

WALCHEM pH/ORP CONTROLLERSWalchem WPH single input pH/ORP controller shown.FEATURES• Choice of single (WPH) or dual (WDP) input models.• Four control/alarm output relays.• Separate dedicated diagnostic alarm relay.• NEMA 4X (IP65) rated.• Simple sensor calibration.• Digital input prevents contrl based on stagnant sample orempty tank.• Manual output activation simplifies output testing and safeadjustments.• Compatible with Walchem WEL series differential electrodes.• Built-in pre-amp.• TNC threaded connection.• 115 VAC standard.• UL, CAN/CSA certifications.SPECIFICATIONS• Range: -2 to 16 pH; ±1500 mV (ORP)• Resolution: .0015 pH units; 1 mV (ORP)• Accuracy (calibrated): ±0.01 pH; ±1 mV (ORP)• Temperature range: 32 to 212°F (0 to 100°C)• Temperature resolution: ±0.09°F (±0.05°C)• Temperature accuracy: ±0.9°F (±0.5°C)• Power: 115 VAC, 50/60 Hz, 8A• Signals (pH/ORP): ±1500 mV• Signals - Temperature Compensation: Pt 100 or 1000• Signals Interlock: Isolated dry contact closure required• Control mechanical relays internally powered: 115 VAC, 6Aresistive, 1/8 HP (All relays are fused together as one group,total current for this group must not exceed 6A.)• Dry contact mechanical relays: 115 VAC, 6A resistive, 1/8 HP• Pulse Output: 150 mA, 40 VDC maximum. VLowMax = 0.13V@ 18 mA• Optional 4-20 mA outputs: Fully isolated, internally powered.600Ω max resistive load. Resolution 0.001% of span. Accuracy±1% of reading.• NEMA rating: 4X (IP65) rated.• Display: 2 x 16 character backlit liquid crystal• Ambient temperature: 32 to 122°F (0 to 50°C)• Shipping weight: 7 lbs (3 kg)®®WPH SINGLE INPUT pH/ORP CONTROLLER• pH or ORP operation is software selectable.• Versatile relay configuration.• Optional: up to two fully isolated 4-20 mA outputs.• Auxiliary relays can be confugured as High Alarm, Low Alarm,In-range Output, Out-of-range Alarm or Probe Wash.• Probe wash feature allows automated sensor cleaning up to10 times per day.• Self-test feature simulates pH and temperature signals allowingfor quick diagnostics of sensor or controller problems.ORDER INFORMATION:WPH410 SERIESSINGLE INPUT, PH/ORP CONTROLLEROne sensor input, two powered relays, three dry contact relays.115VAC pre-wired, in-line flat surface pH electrode with preampand 3/4” tee, no automatic temperature control.5910.4703 WPH 410 Series $1,169.00WDP DUAL INPUT pH/ORP CONTROLLER• All of the features of the WPH single input models.• Each optional 4-20 mA output may be assigned to any sensorsignal or its temperature signal.• Any relay may be assigned to either sensor input.• Use two separate dry contact interlocks for each sensor’srelays or use one dry contact.ORDER INFORMATION:WDP410 SERIESDUAL INPUT, PH/ORP CONTROLLERDual sensor inputs, five powered relays. 115VAC pre-wired. Twosubmersion flat surface pH electrodes with preamps. No automatictemperature control.5910.2702 WDP 410 Series $1,807.00WPH420 SERIESSINGLE INPUT, PH/ORP CONTROLLEROne sensor input, two pulse proportional outputs, three dry contactrelays. 115VAC pre-wired, in-line flat surface pH electrodewith preamp and 3/4” tee, no automatic temperature control.WDP420 SERIESDUAL INPUT, PH/ORP CONTROLLERDual sensor inputs, two pulse proportional outputs, three drycontact relays. 115VAC pre-wired. Two sumbersion flat surfacepH electrodes with preamps. No automatic temperature control.5910.4803 WPH 420 Series $1,197.00 5910.4703 WDP 420 Series $1,861.001-800-848-1141www.rhfs.com353