pH 500

pH Digital Controller with Matching Pin

pH 500 pH Digital Controller With Matching Pin

 

  • 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 modules
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.
The 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 configuration
  • pH 500111-1 single setpoint, on/off control, analog output,  115V
  • pH 500111-2 single setpoint, on/off control, analog output, 230V
  • pH 500112-1 single setpoint, on/off control, RS232 output, 115V
  • pH 500112-2 single setpoint, on/off control, RS232 output, 230V
  • pH 500121-1 single setpoint, proportional control, analog output, 115V
  • pH 500121-2 single setpoint, proportional control, analog output, 230V
  • pH 500211-1 dual setpoint, on/off control, analog output, 115V
  • pH 500211-2 dual setpoint, on/off control, analog output, 230V
  • pH 500212-1 dual setpoint, on/off control, RS232 output, 115V
  • pH 500212-2 dual setpoint, on/off control, RS232 output, 230V
  • pH 500221-1 dual setpoint, proportional control, analog output, 115V
  • pH 500221-2 dual setpoint, proportional control, analog output, 230V
  • pH 500222-1 dual setpoint, proportional control, RS232 output, 115V
  • pH 500222-2 dual setpoint, proportional control, RS232 output, 230V
 

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

Range

pH

0.00 to 14.00 pH

 

Temperature

-9.9 to 120°C

Resolution

pH

0.01 pH

 

Temperature

0.1°C

Accuracy @ 20°C

pH

±0.02 pH

 

Temperature

±0.5°C

Input Impedance

 

1012 Ohm

pH Calibration

 

automatic, one, two or three point, at pH 4.01, 7.01, 10.01

Temperature
Compensation

 

automatic (with Pt100 probe) or manual from -9.9 to 120°C

Outputs

 

digital: 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 Relay

 

1 or 2 contact outputs SPDT 5A-250 VAC, 5A-30 VDC (resistive load), fuse protected (2A, 250V fast fuse)

Alarm Relay

 

1 contact output SPDT, 5A-250 VAC, 5A-30 VDC (resistive load), fuse protected (2A, 250V fast fuse)

Power Supply

 

115 VAC ±10% or 230 VAC ±10%; 50/60 Hz

Power Consumption

 

15 VA

Over Current
Protection

 

400 mA 250V fast fuse

Max Oscillation
Frequency

 

4 MHz

Environment

 

0 to 50°C (32 to 122°F); RH max 95% non-condensing

Dimensions

 

panel cutout: 140 x 140 mm, instrument: 144 x 144 x 170 mm

Weight

 

1.6 kg (3.5 lb.)