Instruction manual

1
1.0 INTRODUCTION
The WebMasterONE series controller is multi-functional, but not all of the features mentioned are
necessarily present in the controller you have received. All features can be added in the field. The
controller may be configured to control a cooling tower, or a boiler, or both.
Standard features include a direct sensor measurement of either conductivity, pH, or ORP; six
digital inputs (for flow switch, metering pump flow feedback, counter, or other use), eight relay
outputs, and both Ethernet and USB connections to a computer.
Optional features include:
Up to three additional pH, ORP, chlorine, chlorine dioxide and/or conductivity measurements.
Up to six digital inputs (for level switch, metering pump flow feedback, counter, or other use).
Up to eight 4-20 mA inputs (for drum level, flow meters, or practically any other parameter).
Up to four 4-20 mA outputs (for retransmission of the conductivity, pH, ORP, Cl
2
, ClO
2,
temperature or any 4-20 mA input signals).
A modem card (for remote communications)
The controller can log data and events, automatically generate reports on a periodic basis at a
programmable frequency, and if equipped with a modem card, dial out in the event of an alarm
condition. The alarm notification may be via phone to a pager, or email.
Our revolutionary digital communications package allows you to change set points, manually
activate or deactivate pumps and valves, upgrade software, receive reports and alarms, from any
PC that has Internet access. No proprietary software needs to be installed on the PC, only a web
browser.
2.0 SPECIFICATIONS
2.1 Measurement Performance
Contacting Conductivity
pH
Range 0-10,000 µS/cm
Range -2 to 16 pH units
Resolution 1 µS/cm
Resolution 0.01 pH units
Calibration ± 50% of raw reading;
Calibration single or dual point
scalable to read in ppm
mV
Temperature
Range ± 1400 mV
Range 32 to 392°F (0 to 200°C)
Resolution 1 mV
Resolution 1°F (1°C)
Calibration single or dual point
Calibration single point; degrees C or F
Chlorine
Chlorine Dioxide
Range 0 to 8 mg/l
Range 0 to 10 mg/l
Resolution 0.01 mg/l
Resolution 0.01 mg/l
Calibration single or dual point
Calibration single or dual point
Electrodeless Conductivity
Ranges 50 to 1000 µS/cm, 1-10 mS/cm, 10-100 mS/cm, or 100-1000 mS/cm
Resolution 1 µS/cm or 1 mS/cm (range dependent)
Calibration single or dual point; scalable to read in ppm or % concentration