Instruction Manual

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1 Brief Introduction
Thanks for purchasing APERA INSTRUMENTS MP511 pH/mV Benchtop Meter (referred to
“meter” as below). Before using this meter, please read this instruction manual cafrefully in
order to properly use and maintain it.
Features
This meter has an outstanding combination of advanced electronic technology, sensor
technology and software design. It is suitable for laboratory use to measure pH and ORP
value of regular water solutions. With its built-in microprocessor chip, elegant designs and
user-friendliness, this meter has the following features:
⚫ Meets international GLP standards, with intelligent functions such as automatic
calibration, automatic temperature compensation, data storage, auto. timing
measurement, RS232 output, clock display, parameter setting and self-diagnosis.
⚫ With digital processing technology, the response speed and accuracy are greatly
improved, appears when readings are stable.
⚫ Automatic pH buffer solution recognition. Buffer solution selectable: USA series, NIST
series and China series.
⚫ The meter meets IP54 protection level. All of the sockets are protected by the silica gel
caps.