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Eutech Instruments pH 200 1/8 DIN pH ORP Controller

USA Toll Free: 1-800-730-0302 Tel: 416-240-1920 -

USA Toll Free: 1-800-730-0302 Tel: 416-240-1920 -

Eutech Instruments pH 200 1/8-DIN pH/ORP Controller

Eutech pH 200 Controller, Oakton InstrumentsScrolling, 14-segment LED guides user through set-up functions

  • Two set point, two SPDT relay for on/off control

  • Reliable power supply from 85 to 250 V AC/DC withstands voltage fluctuations

  • Two separately adjustable hysteresis bands prevents rapid contact switching at either set point

  • Selectable symmetrical mode operation eliminates electrical noise

  • Two-point pH calibration; offset ORP and temperature calibration

  • 4-20 mA output for remote monitoring or hard copy recording

  • Two level password protection for calibration and setup parameters

  • Toggle between pH (or mV) and temperature display

  • Removable terminal strips offer quick and easy connections

  • Battery back-up of memory maintains set-up if power fails

These sturdy, compact controllers withstand voltage fluctuations from 85 to 250V AC/DC! They are ideal for installation were electrical fluctuations are common, or install them in series throughout areas of differing electrical conditions.

Advanced setup mode lets you set relay values, select pH or ORP control, select manual or automatic temperature compensation, and more. It also lets you view electrode slope and offset, and previous calibration points.

The 1/8 DIN housing is ready to install in standard panels and NEMA rated boxes. Includes mounting hardware; accepts electrodes with BNC connectors and 100 Pt RTD ATC elements.

pH 200 Controller Manual


Measures pH, mV, ºC
pHRange 0.00 to 14.00 pH
pHResolution 0.01 pH
pHAccuracy +/-0.01 pH
pHCalibration up to 2 points (1.68, 4.01, 6.86, 7.00, 9.00, 10.00, 12.45)
mVRange +/-1000 mV
mVResolution 1 mV
mVAccuracy +/-2.0 mV
mVCalibration offset up to +/-150 mV
TemperatureRange -10.0 to 110.0ºC
TemperatureResolution 0.1ºC
TemperatureAccuracy +/-0.5ºC
TemperatureCalibration offset to +/-10ºC
Control type on/off
Number of inputs one
Number of set points two (high and low)
Separate alarm relay no
OutputControl 2 SPDT nonpowered relays, 6A at 110 VAC; 250 VAC max.
OutputCurrent 4 to 20 mA output, isolated
Hysteresis adjustable; 0.0 pH to 2.0 pH or 0 to 300 mV
Input impedance 10^12
Temperature Sensor 2 or 3 wire 100W Pt RTD
Temperature Compensation Automatic or manual, from 0 to 100ºC
Password protection two level (calibration and setup parameters)
Display scrolling 14-segment LED, four digit
Operating Temperature 0 to 50ºC, 10 to 95% RH
Housing 1/8 DIN
Dimensions 48 x 96 x 150 mm; panel mount 91 x 45 mm
Shipping weight 3 lb (1.4 kg)


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Metex Corporation Limited has been providing superior products and services to the process control, chemical treatment, waste water, industrial and manufacturing industries for over 25 years. It is our goal to continually provide our customers with the best possible equipment, technology, and service.


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