Model GLI-98144 Portable pH/ORP Meter
2
Rev. 0-401
Please read this instruction manual carefully
before using the instrument. This manual will
provide you with all the necessary information
for the correct use of the instrument, as well
as a precise idea of its versatility in a wide
range of applications.
This meter is in compliance with European
Community (CE) directives EN 50081-1 and
EN 50082-1.
TABLE OF CONTENTS
PRELIMINARY EXAMINATION ................................. 2
GENERAL DESCRIPTION ..................................... 2-3
FUNCTIONAL DESCRIPTION................................... 3
SPECIFICATIONS..................................................... 4
INITIAL PREPARATION............................................ 4
SETUP MODE........................................................ 4-6
TAKING pH MEASUREMENTS ................................. 6
TAKING ORP MEASUREMENTS........................... 6-7
TAKING TEMPERATURE MEASUREMENTS ........... 7
pH CALIBRATION PROCEDURE........................... 7-8
mV CALIBRATION PROCEDURE .......................... 8-9
TEMPERATURE CALIBRATION PROCEDURE ........ 9
LOGGING FUNCTION ....................................... 10-11
GOOD LABORATORY PRACTICE (GLP) .......... 11-12
LCD BACKLIGHT .................................................... 12
DATA TRANSFER TO PC .................................. 12-13
BATTERY REPLACEMENT ............................... 13-14
TEMPERATURE-RESISTANCE CORRELATION
FOR GLI pH SENSITIVE GLASS ........................ 14
ELECTRODE CONDITIONING AND
MAINTENANCE............................................. 15-16
WARRANTY............................................................ 16
PRELIMINARY EXAMINATION
Remove the instrument from the packing
material and examine it carefully to make
sure that no damage has occurred during
shipping. If there is any damage, notify the
transit carrier immediately.
Each meter is supplied complete with:
•
GLI-1618D-0 Combination pH Electrode
with built-in temperature sensor
•
pH 4.01 buffer
•
pH 7.01 buffer
•
Instruction Manual
•
AA size Alkaline Batteries (four)
•
Rugged Carrying Case.
NOTE:
Save all packing material until you
are sure that the instrument func-
tions correctly. All defective items
must be returned in their original
packaging together with the supplied
accessories.
GENERAL DESCRIPTION
The GLI-98144 is a portable logging micro-
processor-based pH/ORP/temperature meter.
All pH measurements are automatically com-
pensated for temperature (ATC). The
instrument housing is made of rugged, light-
weight material, making it truly portable.
Five memorized buffers (4.01, 6.86, 7.01,
9.18 and 10.01pH) and wrong buffer recogni-
tion technology make calibration simple and
error free. One or two-point calibration is
possible.
The meters are also equipped with a stability
indicator and backlight feature for comfort-
able reading even in excessively dark
environments. A user friendly interface pro-
vides clear messages regarding errors,
functions and more.
The GLP features provide a guarantee of
data consistency.
Measurements can be performed with labo-
ratory-grade precision in the field as well as
in the laboratory.
An alarm time-out is available to alert the
user if too much time has elapsed since the
