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Thermo Fisher Scientific Alpha pH 200 (In the process of updating the brand guideline & product image) User Manual

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1 INTRODUCTION

Thank you for purchasing a αlpha pH 200 ⅛ DIN pH/ORP Controller. This
controller is part of a series of quality process controllers available from Thermo
Scientific/ Eutech Instruments. These sturdy, economical pH/ORP controllers are
designed with the features and reliability of a much more expensive instrument.

Your controller includes:

Removable terminal blocks for easy connections;

Two mounting brackets for easy panel mounting;


When shipped, the controller is set to the pH mode. See Setup program P3.1 for
directions on selecting ORP mode.

Some features of this controller are:

Two set point, two SPDT relay operation

Scrolling, 14-segment LED guides user easily through setup functions

Reliable power supply from 85 to 260 V AC, 50/60 Hz or DC withstands

voltage fluctuations

Push-button operation from the front panel

Two-point pH calibration, offset temperature and ORP calibration

Adjustable hysteresis band prevents rapid contact switching near set-point

Selectable automatic or manual temperature compensation

Two-level password protection

Removable terminal strips for quick and easy connections

Non-Volatile memory retains setup even if power fails, and lets you configure
unit before installation

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