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INSTRUCTION MANUAL

HI98304

EC Tester

Warranty

These meters 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. Probes are 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, 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.

Solutions

Code Description

HI70030P

12.88 mS/cm calibration solution,

20 mL sachets (25 pcs.)

HI7030M

12.88 mS/cm calibration solution,

230 mL bottle

HI7030L

12.88 mS/cm calibration solution,

500 mL bottle

Accessories

IST98304N 06/18

To obtain the highest accuracy for measurement it is important to follow

these tips:

• Calibration is only as good as the solution being used. The calibration

solution values change over time. Fresh solution should be used for each

calibration.

• The probe should be rinsed with purified water each time before placing

in calibration solution or sample to be tested.

Care and Maintenance

Error messages

During user calibration, if the reading is out of the accepted range, the meter

will display “—— Err“.i.e. 20.00 mS/cm blinking means the limit of the

measured value is out of range.

If the measured temperature is higher than 50.0 ºC or lower than 0.0 ºC, the

50.0 ºC or 0.0 ºC temperature value will blink on the LCD in measure mode.

1. Pour 2” (5 cm) of standard solution into a container.

2. Place the probe in calibration solution. The probe tip should be centered

in the solution and submersed 1.18” (3 cm). The meter will automatically

recognize the solution.

3. If the solution is not recognized or is out of the accepted range “—- Err“

is displayed.

4. If the calibration solution is recognized “REC“ is displayed until the

reading is stable and the calibration is accepted.

• After acceptance, the “Stor“ message is displayed and meter returns to

measurement mode.

Calibration Procedure

Measurement and Calibration

For better accuracy, frequent calibration of the meter is recommended. In

addition, the instrument must be recalibrated:

• When high accuracy is required.

• At least once a month.

Measurement

Press the ON/OFF button to turn the meter ON. Place the probe to the

desired solution. The conductivity value, automatically compensated for

temperature, will be shown on the LCD.

The measured temperature will be shown on the secondary LCD.

Note: Before taking any measurement make sure the meter has been

calibrated.

Clear Calibration

Place meter in calibration mode. Press ON/OFF and “Clr” is displayed. The

meter will now be at default calibration.

DiST 4

Battery Replacement

To change the CR2032 Li-ion battery, turn the battery cover located on the

back of the meter counterclockwise to unlock. Remove cover and replace with

new battery + side facing up.

Note: Batteries should only be replaced in a safe area using the

battery type specified in this instruction manual. Old batteries should

be disposed in accordance with local regulations.

The meter features a low battery indicator. When the battery is running low

(under 10%), the battery indicator will blink on the LCD. When the battery

is discharged “dEAd bAtt” will be displayed on the LCD for 2 seconds and

the meter will turn off.

0

0

4

4

Recommendations for Users

Before using Hanna Instruments products, make sure that they are entirely

suitable for your specific application and for the environment in which they

are used. Any variation introduced by the user to the supplied equipment

may degrade the meter’ s performance. Avoid touching the electrode area.

To avoid damages or burns, do not put the meter in microwave oven. For

yours and the meter‘s safety do not use or store the meter in hazardous

environments.

• Press CAL button to enter calibration mode from measurement mode.

• The meter will enter the calibration mode, displaying “mS/cm 12.88

USE” with CAL tag blinking.

OPERATION:

• Remove the protective cap.

• Turn the DiST

DiST

DiST

DiST

DiST on.

• Immerse it in the solution to be tested without

exceeding the maximum immersion level.

• Stir gently and wait for the reading

to stabilize.
DiST

DiST

DiST

DiST

DiST automatically compensates for
temperature variations.

• The reading on display is directly expressed in:

ppm (mg/L) unit for DiST1

DiST1

DiST1

DiST1

DiST1 (

HI98300 

HI98300 

HI98300 

HI98300 

HI98300 & HI98301

 HI98301

 HI98301

 HI98301

 HI98301

),

ppt (g/L) unit for DiST2

DiST2

DiST2

DiST2

DiST2 (HI98302

HI98302

HI98302

HI98302

HI98302),

µS/cm for DiST3

DiST3

DiST3

DiST3

DiST3 (HI98303

HI98303

HI98303

HI98303

HI98303) and

mS/cm for DiST4

DiST4

DiST4

DiST4

DiST4 (HI98304

HI98304

HI98304

HI98304

HI98304).

CALIBRATION:

• Immerse the DiST 

DiST 

DiST 

DiST 

DiST in the indicated calibration

solution (see Specifications), without exceeding
the maximum immersion level.

• Allow the reading to stabilize and with a small

screwdriver turn the calibration trimmer until the
display shows the required solution value.

E.g. for calibrating HI98301

HI98301

HI98301

HI98301

HI98301 the correct calibra-

tion solution is HI70032

HI70032

HI70032

HI70032

HI70032, and the trimmer should

be turned until the display shows «

1382

«.

BEPS AND BATTERY REPLACEMENT:

DiST 

DiST 

DiST 

DiST 

DiST is supplied with BEPS (Battery Error Preventing
System) which avoids any erroneous reading due to
low batteries level, by switching the meter off.
To replace the batteries, slide off the battery com-
partment cover and replace all four 1.5V batteries
while paying attention to their polarity.

Batteries should only be replaced in a nonhazardous
area using the battery type specified in this instruction
sheet.

DiST

HI98300/1/2/3/4

Conductivity/TDS Meters

with Automatic Temperature
Compensation

Manufacturers since 1978

Visit our Internet Home Page:

http://www.hannainst.com

ACCESSORIES:

HI 70030P

12880 µS/cm calibration kit
(25 x 20 mL sachets)

HI 70031P

1413 µS/cm calibration kit
(25 x 20 mL sachets)

HI 70032P

1382 ppm (mg/L) calibration kit
(25 x 20 mL sachets)

HI 70038P

6.44 ppt (g/L) calibration kit
(25 x 20 mL sachets)

HI 70039P

5000 µS/cm calibration kit
(25 x 20 mL sachets)

HI 70442P

1500 ppm calibration kit
(25 x 20 mL sachets)

HI 73301

Spare electrode for DiST1

HI 73302

Spare electrode for DiST2

HI 73303

Spare electrode for DiST3

HI 73304

Spare electrode for DiST4

HI 731326

Calibration screwdriver (20 pcs)

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