YOKOGAWA PH71, User Manual

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IM 12B03D01-01E
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1. Outline
1. Outline
The Model PH71 Personal pH Meter is a highly accurate, portable pH meter for
laboratory and field application. With its self-diagnostic function, the PH71 provides
precise measurement of pH. Measurement results can be stored and stored data can be
checked on the meter display any time. The PH71 meter is of waterproof construction so
that it can safely be used outdoors on a rainy day, and can also withstand being
accidentally dropped into water.
1.1 Features
Water resistant case
When this meter is used with its dedicated sensor, it meets the requirements of class IP67
according to “Degree of Protection Provided by Enclosure” in IEC 60529.
Simple calibration
Automatic calibration based on preprogrammed data of standard solutions or manual
calibration can be done through simple key operations.
Calendar and clock function
Internal clock functions allow “one-touch checking” of measurement date and time.
Data storage function
Up to 300 measured pH values along with their respective solution temperatures, dates
and times, can be stored and stored data can be checked on the display any time.
Auto power off function
The meter will turn off power automatically if not operated during a preset time period.
The auto power off time can be user configurable in the range of 1 to 120 minutes in
increments of 1 minute. The auto power off function can be disabled, where the meter
should be used with care to conserve the batteries.
Alarm clock function
The meter can issue an alarm signal at a specified time. Even when meter power is
turned off, the internal clock can issue an alarm signal.
Self-diagnostic function
A relevant error message will appear based on the self-diagnostic function.
Large, clear LCD
A measured pH value, solution temperature, date and time are clearly viewed on the
display.
Compact, lightweight, and handy
The meter fits comfortably your hand and also stands firm on the table.