Measurement
Use SET/HOLD to select EC/TDS mode. Place
the electrode in the solution to be tested
while stirring gently. The measurement
should be taken after the stability tag has
disappeared. The EC/TDS value is displayed
on the first LCD line and the temperature on the second LCD line.
Note:
Before taking any measurement make sure the tester has
been calibrated.
Changing EC/TDS Conversion Factor (CONV) & Temperature
Compensation Coefficient ß (BETA)
• From measurement mode, press and hold /MODE until “TEMP”
and the current temperature unit are displayed on the second LCD
line (e.g. “TEMP °C”).
• Press /MODE again to show the current conversion factor (e.g.
“0.50 CONV”) and SET/HOLD to change the conversion factor.
• Press /MODE to show the current temperature compensation
coefficient ß (e.g. “% 2.1 BETA”) and SET/HOLD to change the
temperature compensation coefficient ß.
• Press /MODE to return to measurement mode.
Maintenance
Please read the information below to ensure the highest possible
accuracy.
• If measurements are taken successively, rinse the probe thoroughly
in distilled or deionized water to eliminate cross-contamination.
• Clean the electrode monthly with a lint-free cloth.
• Never store the probe in distilled or deionized water.
Electrode Replacement
Use supplied removal tool (
HI73128
) to replace the EC/TDS electrode.
Insert the tool into the probe cavity.
Rotate the tool counterclockwise.
Pull the probe out by using the other side of the tool.
Insert a new probe following the above instructions in reverse order.
Battery Replacement
Battery life percentage indicator is displayed at power on. If the
battery level drops below 5%, the symbol lights up indicating
that the batteries should be replaced soon.
If the battery level is not adequate to guarantee an accurate reading,
the tester automatically turns off.
To replace the batteries, follow the next steps:
1. Turn OFF the tester.
2. Remove the four screws on the top of the tester to open the battery
compartment (figure 1).
fig. 1
3. Remove the old batteries.
4. Insert four new 1.5V AA batteries in the battery compartment
while paying attention to the correct polarity (figure 2).
5. Close the battery compartment using the four screws.
fig. 2
Note:
Only use the battery type specified in the manual.
Old batteries should be disposed in accordance with local
regulations.
Accessories
Electrodes
HI73311
Replaceable EC/TDS probe
HI73128
Electrode removal tool
Solutions
HI70030P
12880 µS/cm solution, 20 mL sachet (25 pcs.)
HI70031P
1413 µS/cm solution, 20 mL sachet (25 pcs.)
HI70032P
1382 ppm solution, 20 mL sachet (25 pcs.)
HI70038P
6.44 ppt solution, 20 mL sachet (25 pcs.)
HI70442P
1500 ppm solution, 20 mL sachet (25 pcs.)
Other Accessories
HI740026P
Replacement 1.5 V batteries (12 pcs.)
Certification
All Hanna Instruments conform to the
CE European
Directives.
Disposal of Electrical & Electronic Equipment.
The
product should not be treated as household waste.
Instead hand it over to the appropriate collection point
for the recycling of electrical and electronic equipment
which will conserve natural resources.
Disposal of waste batteries.
This product contains batteries, do not
dispose of them with other household waste. Hand them over to the
appropriate collection point for recycling.
Ensuring proper product and battery disposal prevents potential
negative consequences for the environment and human
health. For more information, contact your city, your local
household waste disposal service, the place of purchase or go
to www.hannainst.com.
Recommendations for Users
Before using this tester, make sure that it is entirely suitable for your
specific application and for the environment in which it is used. Avoid
touching the probe at all times. Any variation introduced by the user
to the supplied equipment may degrade the tester’s performance. For
yours and the tester’s safety do not use or store the tester in hazardous
environments.
Warranty
HI98311
and
HI98312
are warranted for a period of one 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. Damage due to
accidents, misuse, tampering or lack of prescribed maintenance is not
covered. If service is required, contact your local Hanna Instruments
Office. If under warranty, report the model number, date of purchase,
serial number and the nature of the problem. If the repair is not
covered by the warranty, you will be notified of the charges incurred.
If the instrument is to be returned to Hanna Instruments Office,
first obtain a Returned Goods Authorization (RGA) number from the
Technical Service department and then send it with shipping costs
prepaid. When shipping any instrument, make sure it is properly
packaged for complete protection.
Hanna Instruments reserves the right to modify the design, construction,
or appearance of its products without advance notice.
All rights are reserved. Reproduction in whole or in part is prohibited without the
written consent of the copyright owner, Hanna Instruments Inc., Woonsocket,
Rhode Island, 02895, USA.
IST98311 09/19
HI98311 • HI98312
Waterproof EC/TDS
& Temperature Testers
INSTRUCTION MANUAL
