Oakton pH 5+, Operating Instructions Manual

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5 4
1. Introduction
Thank you for purchasing an OAKTON
®
Acorn Meter. These meters are economical,
microprocessor-based meters that deliver ±0.01 pH accuracy.
Some of the features of these meters are:
• Large LCD for clear and easy reading
• pH 5 and pH 6 series meters allow measurement in pH and Temperature (°C)
• pH 6 series meters also allow measurement in Millivolt (mV), for taking
ORP (Redox) readings or checking pH electrode performance.
This instruction manual is organized for easy reference. For basic functions of this
meter, read sections 2 through 5. These sections include basic instructions that will
get you up and running quickly. The remaining sections of this manual (6 through
11) deal with electrode maintenance, error messages and troubleshooting. This part
of the manual also includes the Specifications, Accessories, Warranty and Return of
Items section.
2. Display and Keypad Functions
The Acorn has a large custom LCD with the following indicators:
pH
HO
LO
C
mV
indicates
operation mode
pH
annunciator
Degree C
annunciator
mV annunciator
(pH 6 only)
Reading
indicates
HOLD
function is
activated
indicates
low
battery
condition
The OAKTON Acorn meter has four keys on its splashproof keypad. These keys are
ON/OFF, HOLD/ENTER, CAL and MODE.
ON/OFF:
Powers meter on and shuts
unit off. Meter directly enters
measurement mode when you
turn it on.
HOLD/ENTER: Freezes the measured
reading; confirms calibration value.
CAL: Allows calibration of the meter
for pH, mV and Temperature
MODE/INC: Selects the parameter of
measurement: pH, mV (pH 6 series
only) and temperature.
ON
OFF
CAL
HOLD
ENTER
MODE
INC