Genesis GI-98130, Instruction And Operation Manual

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Genesis Instruments
Instruction and
Operation Manual
P.O. Box 1318 Gresham Or . 97030 USA
1-800-669-2113 Fax 1-503-663-1 147
info@greenair.c om ww w.greenair .com
Introduction
How to Operate
COMBO METER
pH-EC-TDS-TEMP
General Description
GI-98129 and GI-98130 are waterproof pH, EC/TDS and
temperature meters. The housing has been completely sealed
against humidity and designed to float. All pH and EC/TDS
readings are automatically temperature compensated (ATC),
and temperature values can be displayed in °C or °F units.
For EC/TDS readings, the EC/TDS conversion factor (CONV)
is selectable by the user, as well as the temperature
compensation coefficient ß (BETA). The meters can be
calibrated at one or two points for pH (with auto buffer
recognition and at one point for EC/TDS). Measurements are
highly accurate with a unique stability indicator right on the LCD.
A low battery symbol warns the user when the batteries are to
be replaced. In addition, the Battery Error Prevention System
(BEPS) avoids erroneous reading caused by low voltage level
by turning the meter off. The pH electrode supplied with the
meter is replaceable by the user. The stainless steel
encapsulated temperature sensor facilitates faster and more
accurate temperature measurement and compensation.
Pocket Pen
Models GI-98129
and GI-98130
Familiarizing yourself with your new meter
A. Turning your meter “on”: To turn your meter on, press and
hold the O/MODE button for 2-3 seconds. Notice that every
time you turn the pen on, it will flash all icons used on the LCD
for a few seconds. This is immediately followed by the
percentage of remaining battery life – example: % 95 BATT).
After the battery life flashes the pen will settle into “normal
measurement mode”. Now would be a good time to get familiar
with the measurement options. This is located to the right of
the ATC icon and above the “primary display”. Press the Set/
Hold button repeatedly and the measurement options will scroll
between PPM, uS, & pH (or ppt, mS, and pH for the GI-98130).
B. To turn your meter “off”: Make sure the pen is normal
measurement mode, then press and hold O/MODE button. The
LCD will read “OFF”. Immediately release the O/MODE button,
your meter will now be off.
C. Freezing the display: press the set/hold button for 2-3
seconds until the secondary display reads “HOLD”. Pressing
either button will return you to normal measurement mode.
NOTE : Before taking a measurement, follow the calibration
instructions to ensure accurate readings. For accuracy it is
recommended to carry out a two point calibration. For best
results always use Genesis Instrument buffers and calibration
solutions. If measurements are taken in different samples
successively, rinse the electrode thoroughly to eliminate cross-
contamination and after cleaning, rinse the electrode with some
of the sample to be measured. When not in use, rinse the
electrode with water and store in a few drops of storage solution.
Do not use distilled water. If electrode dries out soak in storage
solution for one hour. Clean monthly in cleaning solution.
Electrode Replacement
The pH electrode can be easily removed with the tool provided.
Insert the tool into the electrode cavity as shown below.
Remove the electrode by rotating it counterclockwise and then
pull out. Insert the new electrode by following the above
instruction in reverse.
Specifications: GI 98129 low range GI 98130 high range
Range EC 0 to 3999 µS/cm 0.00 to 20.00 mS/cm
TDS 0 to 2000 ppm 0.00 to 10.00 ppt
pH 0.00 to 14.00 pH 0.00 to 14.00 pH
Temp 0 to 60°C or 32 to 140°F 0 to 60°C or 32 to 140°F
Resolution EC 1 µS/cm 0.01 mS/cm
TDS 1 p pm 0.01 ppt
pH 0.01 0.01
Temp 0.1 °C or 0.1 °F 0.1 °C or 0.1 °F
Accuracy @ 20°C/68°F EC/TDS ±2% F.S. ±2% F.S.
pH ±0.05 ±0.05
Temp ±0.5 °C or ±1 °F ±0.5 °C or ±1 °F
Typical EMC Deviation EC/TDS ±2% F.S. ±2% F.S.
pH ±0.02 ±0.02
Temp ±1 ° C o r ± 1 ° F ± 1 ° C o r ± 1 ° F
Calibration EC/TDS Automatic at 1 point
pH 1 or 2 points with (pH 4.01, 7.01 & 10.01 )
Temp Compensation EC/TDS/pH Automatic
EC / TDS Conv Factor Adjustable from 0.45 to 1.00
Environment 0 to 50°C (32 to 122°F); R.H. 100%
Battery Type / Life 4 x 1.5V / 100 hours
Auto Shut-off After 8 minutes
Dimensions 163 x 40 x 26 mm (6.4 x 1.6 x 1.0")
Weight 85 g (3 oz.)
Specifications
Genesis Instruments is a trademark of Green Air Products Inc.
Genesis Instruments are warranted for one (1) year against
defects in workmanship and materials when used for their
intended purpose and maintained according to instructions. The
electrode is warranted for a period of six months. This warranty
is limited to repair or replacement free of charge. Damages
due to accident, misuse, tampering or lack of prescribed
maintenance are not covered. If service is required, contact
the dealer from whom you purchased the instrument. If under
warranty, report the model number, date of purchase, serial
number and the nature of the failure. If the repair is not covered
by the warranty, you will be notified of the charges incurred.
When shipping any instrument, make sure it is properly
packaged for complete protection.
Warranty
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