User Manual

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1 Brief Introduction
Thanks for purchasing and using APERA INSTRUMENTS MP511 pH/mV Benchtop Meter
(referred to “meter” as below).
Before using this meter please read this instruction manual carefully in order to use and
maintain it correctly. On the basis of improving the performance of this instrument constantly,
Apera Instruments reserves the rights to update the information of this manual without giving
prior notice.
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
values of the aqueous solution.
With its built-in microprocessor chip, elegant design 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, timing measurement,
an RS232 output, clock display, functions setting and self-diagnosis
 With digital processing technology, the response speed and accuracy are greatly
improved,. Icon appears when readings are stable.
 Automatic pH buffer solution recognition. Buffer solution selectable: Europe & USA
series, NIST series and China series.
 The meter meets IP54 protection level. All of the sockets are protected by silica gel caps.