Dear Customer,
Thank you for choosing a Hanna Instruments product.
Please read this instruction manual carefully before using
the tester. For more information about Hanna Instruments
and our products, visit www.hannainst.com or e-mail us at
[email protected].
For technical support, contact your local Hanna Instruments Office
or e-mail us at [email protected].
Preliminary Examination
Remove the tester and accessories from the packing material and
examine it carefully. If you require any further information, please contact
Hanna Instruments technical support team at [email protected].
Each
HI98311
is delivered in a cardboard box and is supplied with:
•
HI70031
1413 µS/cm conductivity standard, 20 mL sachet (3 pcs.)
•
HI70032
1382 ppm TDS standard, 20 mL sachet (3 pcs.)
•
HI73311
EC/TDS probe
•
HI73128
Probe removal tool
• 1.5V batteries
• Instrument quality certificate
• Instruction manual
Each
HI98312
is delivered in a cardboard box and is supplied with:
•
HI70030
12880 µS/cm conductivity standard, 20 mL sachet (3 pcs.)
•
HI70038
6.44 ppt TDS standard, 20 mL sachet (3 pcs.)
•
HI73311
EC/TDS probe
•
HI73128
Probe removal tool
• 1.5V batteries
• Instrument quality certificate
• Instruction manual
Note:
Save all packing material until you are sure that the tester
works correctly. Any damaged or defective item must be returned
in its original packing material with the supplied accessories.
General Description & Intended Use
HI98311
(DIST
®
5) and
HI98312
(DIST
®
6) are compact EC/TDS
and temperature testers. They feature a two-buttons operation
system and are easy to use. The compact and waterproof casing is
designed to float if accidentally dropped in water. The testers measure
temperature in °C and °F and all EC /TDS readings are temperature
compensated automatically (ATC).
EC/TDS measurements have user-selectable conversion factor (CONV)
and temperature compensation coefficient ß (beta).
The testers display a stability tag ( ) that will disappear once the
reading has stabilized.
Battery level and low-battery indicator are clearly displayed on
the LCD to alert the user in the event that low battery power could
adversely affect readings.
BEPS (Battery Error Prevention System)
The testers will automatically shut off if there is not enough power to
get an accurate measurement.
EC/TDS Probe
HI98311
&
HI98312
are supplied together with
HI73311
EC/TDS
graphite electrode.
Temperature Sensor
The stainless steel temperature sensor facilitates faster and more
accurate temperature measurements.
Specifications
Range
0.0 to 60.0 °C (32.0 to 140.0 °F)
0 to 3999 µS/cm (
HI98311
)
0.00 to 20.00 mS/cm (
HI98312
)
0 to 2000 ppm (
HI98311
)
0.00 to 10.00 ppt (
HI98312
)
Resolution
0.1 °C (0.1 °F)
1 µS/cm ; 1 ppm (
HI98311
)
0.01 mS/cm ; 0.01 ppt (
HI98312
)
Accuracy
(@25 °C / 77 °F)
±0.5 °C (±1.0 °F)
±2% f.s. (EC/TDS)
Temperature
compensation
Automatic
ß=0.0 to 2.4% / ºC
Environment
0 to 50 °C (32 to 122 °F); RH 100%
TDS Factor
0.45 to 1.00 (CONV)
Calibration
Automatic, one-point
Calibration solutions
HI98311
HI98312
HI70031
(1413 µS/cm)
HI70032
(1382 ppm; CONV=0.5)
HI70442
(1500 ppm; CONV=0.7)
HI70030
(12880 µS/cm)
HI70038
(6.44 ppt; CONV=0.5
or 9.02 ppt; CONV=0.7)
Electrode
HI73311
EC/TDS electrode (included)
Battery type
1.5V (4 pcs.)
Battery life
Approx. 100 hours
Auto-off
After 8 minutes of non-use
Dimensions
171 x 41 x 26 mm (6.7 x 1.6 x 1.0”)
Weight
85 g (3.1 oz.)
Functional Description
Liquid Crystal
Display
SET/HOLD
button
Battery
compartment
/MODE
button
Temperature
sensor
HI73311 EC/TDS
probe
LCD Display
5
6
7
8
4
3
2
1
1. Automatic Temperature Compensation (ATC) indicator
2. Stability tag
3. Battery life percentage indicator
4. Low battery indicator
5. Measurement units (
HI98311
)
6. Measurement units (
HI98312
)
7. First LCD line
8. Second LCD line
Operational Guide
Turning the Tester ON / OFF
Press and hold /MODE. All LCD segments will be displayed for a
few seconds followed by battery life percentage indicator. To turn the
tester off, from measurement mode, press /MODE. “OFF” will be
displayed on the second LCD line and then the tester will turn off.
HOLD Mode
From measurement mode, press and hold
SET/HOLD until “HOLD” is displayed. EC/TDS
readings will be frozen on the LCD. Press either
buttons to resume measurement mode.
Setup
Setup mode allows the selection of temperature unit. To enter the setup
mode, press /MODE until “TEMP” and the current temperature unit are
displayed (e.g. “TEMP °C”). Use SET/HOLD to change the temperature
unit. To return to measurement mode, press /MODE twice.
EC / TDS Calibration & Measurement
It is recommended to calibrate the tester frequently, especially if high
accuracy is required. More frequent calibrations may be required
depending on the type of sample being tested. The tester should be
recalibrated:
• whenever the EC/TDS electrode is replaced
• at least once a month
• after testing aggressive samples
Calibration procedure
• From measurement mode, press and hold /MODE until “CAL” is
displayed on the second LCD line.
• Place the probe in calibration solution:
HI70031
(1413 µS/cm)
for
HI98311
and
HI70030
(12.88 mS/cm) for
HI98312
.
• The LCD displays “OK” for 1 second and the tester returns to
measurement mode.
• When using the calibrations solutions listed in the Specifications
table, if the EC / TDS conversion factor is either 0.50 or 0.70, the
tester allows a direct calibration in ppm.
Note:
The “CAL” tag on the LCD indicates that the tester is
calibrated.
Exiting Calibration & Resetting Default Values
• When in calibration mode, it is possible to exit calibration
procedure by pressing /MODE, before first-point calibration
has been accepted. The tester displays “ESC” and returns to
measurement mode and last calibrated data.
• When in calibration mode, it is possible to clear a previous
calibration and return to default values by pressing SET/HOLD,
before the first calibration point has been accepted. The tester
displays “CLR” on the second LCD line, “CAL” tag dissappears and
tester returns to default calibration.
