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pH 500 pH Digital Controller

pH 500 pH Digital Controller

pH 500 series of controllers are simple to operate, microprocessor-based process meters packed with features. For more flexibility and better resolution for chart recorders, any two points between 0 and 14 pH can be chosen to correspond to the analog output spans. Several pH 500 models are equipped with a bi-directional RS232 port. Push button password programming prevents tampering.

pH 500 series of controllers are simple to operate, microprocessor-based process meters packed with features. For more flexibility and better resolution for chart recorders, any two points between 0 and 14 pH can be chosen to correspond to the analog output spans. Several pH 500 models are equipped with a bi-directional RS232 port. Push button password programming prevents tampering.

  • Single or dual set point
  • Fully programmable
  • mA and VDC recorder output or RS232
  • Differential input for ground loop protection
  • Automatic three point calibration
  • Last calibration data
  • Automatic Temperature Compensation
  • Simple wiring with removable terminal modulesThe Fail Safe Alarm System protects the pH 500 against the pitfalls of process control, like power interruption or line failure. With pH 500 quick one, two or three point calibration at pH 4.01, 7.01 and 10.01 comes standard. The temperature can be manually or automatically compensated for. Models with RS232 output allow computer compatibility, a necessity for process control instrumentation. You can also choose from ON/OFF or proportional dosage to save on chemicals.Choose your configurationpH 500111-2 single setpoint, on/off control, analog output, 230V
    pH 500121-2 single setpoint, proportional control, analog output, 230V
    pH 500211-2 dual setpoint, on/off control, analog output, 230V
    pH 500221-2 dual setpoint, proportional control, analog output, 230V
    pH 500222-2 dual setpoint, proportional control, RS232 output, 230V

    Order Information:
    Each pH 500 model is supplied complete with mounting brackets and instructions.

Specifications

Specifications  
RangepH0.00 to 14.00 pH
Temperature-9.9 to 120C
ResolutionpH0.01 pH
Temperature0.1C
Accuracy @ 20CpH0.02 pH
Temperature0.5C
Input Impedance1012Ohm
pH Calibrationautomatic, one, two or three point, at pH 4.01, 7.01, 10.01
Temperatureautomatic (with Pt100 probe) or manual from -9.9 to 120C
Compensation
Outputsdigital: RS232 bi-directional optoisolated; or analog, galvanically isolated: 0-1 mA, 0-20 mA and 4-20 mA, 0-5 VDC, 1-5 VDC and 0-10 VDC
Set Point Relay1 or 2 contact outputs SPDT 5A-250 VAC, 5A-30 VDC (resistive load), fuse protected (2A, 250V fast fuse)
Alarm Relay1 contact output SPDT, 5A-250 VAC, 5A-30 VDC (resistive load), fuse protected (2A, 250V fast fuse)
Power Supply115 VAC 10% or 230 VAC 10%; 50/60 Hz
Power Consumption15 VA
Over Current400 mA 250V fast fuse
Protection
Max Oscillation4 MHz
Frequency
Environment0 to 50C (32 to 122F); RH max 95% non-condensing
Dimensionspanel cutout: 140 x 140 mm, instrument: 144 x 144 x 170 mm
Weight1.6 kg (3.5 lb.)