Description:
The S420 variable speed metering pump injects solution in direct proportion to an incoming 4-20mA analog signal. To achieve the desired flow rate output, the operator scales the pump's response to the signal from 25% to 100% of the maximum flow rate output. The chart on the right illustrates the correlation between the signal received and the pump flow rate output based on the scale setting. When operating in manual mode, the adjustment range is 5% to 100%.
The ability to accept a 4-20mA signal makes the pump well suited for use with water treatment controls including pH and ORP monitors to maintain proper water chemistry and to treat effluent discharge water. Installations can include industrial and municipal waste water treatment facilities and well or surface water treatment for municipalities who supply potable water to residential communities or commercial sites.
Features:
Specifications:
Flow Rate Output Control: 4-20mA input signal or manual
Reproducibility: ±2%
Maximum Working Pressure: 25 psi (1.7 bar), 100 psi (6.9 bar)
Maximum Operating Temperature: 104°F (40°C)
Maximum Suction Lift: 25 ft (7.6 m) vertical lift, based on water
Motor Type: Brushless DC motor
Shaft rpm: (average maximum) 45
Duty Cycle: Continuous
Maximum Viscosity: 1500 Centipoise
Motor Voltage: (Amp Draw) 120V 60Hz 1PH (0.6), 230V 60Hz 1PH (0.3), 230V 50Hz 1PH (0.3)
Power Cord Type: 120V 60Hz SJTOWA, 230V 60Hz SJTOWA, 230V 50Hz H05RN-F
Power Cord Plug End: 120V 60Hz 5-15P, 230V 60Hz 6-15P, 230V 50Hz CEE7/7
Power Cord Length: 6 ft (1.8 m)
Classification: Indoor/Outdoor
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