Waterproof EC/TDS Tester
Thank You
Thank you for choosing a Hanna Instruments product. Please read
this instruction manual carefully before using the instrument.
For more information about Hanna and our products,
visit or e-mail us at
For technical support, contact your local Hanna office or e-mail us
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Preliminary Examination
Remove the meter from the packing material and examine it carefully to make sure
that no damage has occurred during shipment. If noticeable damage is evident, contact
your local Hanna office.
Each meter is supplied with:
• CR2032 battery (1 pc.)
• Storage / Protection sleeve
• Instruction manual
• Quality Certificate
• Quick Cal pH and EC one point calibration solution sachet (4 pcs.)
Liquid Crystal
CAL button
ON/OFF button
Note: Save all packing material until you are sure that the instrument functions
correctly. All defective items must be returned in the original packaging with the
supplied accessories.
0.00 to 6.00 mS/cm
0 to 3000 ppm (0.5)
0 to 4000 ppm (0.7)
0.0 to 50.0 °C (32.0 to 122.0 °F)
0.01 mS/cm
10 ppm (0.5)
10 ppm (0.7)
0.1 °C (0.1 °F)
±2% F.S.
(@25 °C/77 °F)
±0.5 °C (±1.0 °F)
TDS Conversion factor 0.5 (500 ppm) or
0.7 (700 ppm)
(Quick Cal)
(1.41 mS/cm)
automatic,single point (1.41 mS/cm)
one point calibration using Quick Cal pH and EC
Quick calibration
one point calibration solution HI50036
automatic, 0.0 to 50.0 ºC (32.0 to 122.0 ºF)
Battery type
CR2032 Li-Ion 3V (1 pc.)
Battery life
approximately 250 hours of continuous use
0 to 50 ºC (32 to 122 ºF);
RH 100% max
68 g (2.4 oz.)
(without battery)
The probe is shipped dry. Before using the electrode, remove the protective cap. Then
follow the calibration procedure.
*1000 µS/cm =500 ppm with 0.5 CF
• Turn the tester on by pressing ON/OFF button.
• Remove the protective cap and immerse the tip of the probe in the sample to
be tested.
• Stir gently and wait for a stability tag to disappear.
• The electrode automatically compensates for temperature variations.
• The reading on display is directly expressed in: mS/cm or ppm.
• For best results, recalibrate periodically.
• After use rinse the probe with water.
• Always replace the protective cap after each use.
EC Probe
Sensor (inside)
All rights are reserved. Reproduction in whole or in part is prohibited
without the written consent of the copyright owner.
Hanna Instruments reserves the right to modify the design,
construction, or appearance of its products without advance notice.
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.
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.
Calibration Procedure
• Press CAL button to enter calibration mode from measurement mode.
• The meter will enter the calibration mode, displaying “mS/cm 1.41 USE” with
CAL tag blinking.
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
3. If the solution is not recognized or is out of the accepted range “---- Err“ is
4. If the buffer 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.
Clear Calibration
Place meter in calibration mode. Press ON/OFF and “Clr” is displayed. The meter will
now be at default calibration.
Quick Calibration
Select calibration type “CAL quic “ from meter setup.
• Enter calibration mode.
• Immerse the probe in the HI50036 calibration solution.
• When the standard values is recognized and stability is reached the meter
automatically accepts the calibration.
• The LCD will display “Stor“ for 1 second and return to normal measurement mode.
• If the standard is not recognized or the slope is out of accepted range “----Err‘ is
displayed. Change the calibration solution, clean the electrode or press any key
to exit calibration.
• When the calibration procedure is completed, the “CAL“ tag is turned on.
• After entering in the calibration mode and before the point is accepted, it is
possible to quit the procedure and return to the last calibration data by pressing
the CAL button. The LCD displays”----ESC” for 1 second and the meter returns to
measurement mode.
To select the Auto-Off time
To select the AUTO OFF when “AOFF” is displayed press the CAL button to change
between 8 min, 60 min or --- (disabled).
Recommendations for Users
Error message
To select calibration type when “CAL“is displayed press the CAL button to choose from
“CAL STD“ (standard calibration) or “CAL quick “(one-point quick calibration).
During user calibration, if the reading is out of the accepted range, the meter will
display “---- Err“.i.e. 3000 ppm 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.
To select EC or TDS
Before using Hanna products, make sure that they are entirely suitable for your
specific application and for the environment in which they are used. Operation of these
instruments may cause unacceptable interferences to other electronic equipment,
thus requiring the operator to take all necessary steps to correct such interferences.
Any variation introduced by the user to the supplied equipment may degrade the
instrument’s EMC performance. To avoid damages or burns, do not put the instrument
in microwave oven. For yours and the instrument safety do not use or store the
instrument in hazardous environments.
To select TDS measurement with 0.5 TDS factor press CAL button until “ppm 500 UNIT“ is
displayed. To select TDS measurement with 0.7 TDS factor press CAL button until “ppm
700 UNIT“ is displayed. By pressing CAL button again “mS/cm EC UNIT“ is selected.
Operational Guide
To return to measurement mode
To turn the meter ON and check the battery status
Press the ON/OFF button.
Press the ON/OFF button to turn the meter on. At start-up, all the LCD segments are
displayed for 1 second, then the percent indication of the remaining battery life is
displayed for another second. The meter then enters the normal measuring mode.
Care and Maintenance
Note: Keeping the ON/OFF button pressed while turning the meter on will
display all LCD segments as long as the button is pressed.
To enter calibration mode
To select calibration type
To obtain the highest accuracy for measurements 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.
Press the CAL button. “CAL“ message is displayed.
To enter setup mode
Battery Replacement
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 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.
Remove the battery cover and press the Setup button located on the side of the battery.
Meter Setup
Quick Cal pH and EC one-point
calibration solution,
230 mL bottle
Quick Cal pH and EC one-point
calibration solution,
20 mL sachets (25 pcs.)
1413 µS/cm calibration solution,
20 mL sachets (25 pcs.)
1413 µS/cm calibration solution,
500 mL bottle
1413 µS/cm calibration solution,
500 mL bottle
While in measurement mode, remove the battery cover. Press the Setup button located
on the side of the battery in the battery compartment. The meter will enter in setup
mode. Press the ON/OFF button to move through setup parameters. Change option by
pressing CAL button. The default settings are: Set t measure unit - °C, AOFF - 8 min,
CAL - standard and EC unit.
To select the temperature unit (°C/°F)
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.
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.
To select the temperature unit when “SET t” is displayed press the CAL button to
change between °C or °F.
IST98318 07/16-1
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