Hanna Instruments HI981520 User manual

INSTRUCTION MANUAL
Hanna Instruments Inc., 584 Park East Drive, Woonsocket, RI 02895 USA www.hannainst.com
HI981520
Marine Monitor
pH
Marine Salinity
Temperature
Hanna®is committed to developing and deploying digital
solutions with a positive impact on the environment and climate.
Please scan the QR code or follow the link
to download the HI981520 user manual.
https://manuals.hannainst.com/HI981520

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.
Hanna Instruments reserves the right to modify the design, construction, or appearance of its products without advance notice.
TABLE OF CONTENTS
1. Preliminary Examination ................................................................................................................3
2. General Description & Intended Use ................................................................................................4
3. Specifications................................................................................................................................5
3.1. Monitor .............................................................................................................................5
3.2. Probes...............................................................................................................................6
4. Functional & Keypad Description.....................................................................................................7
5. Installation ...................................................................................................................................8
6. Setup .........................................................................................................................................10
7. Calibration..................................................................................................................................14
7.1. pH ..................................................................................................................................14
7.2. Conductivity .....................................................................................................................16
7.3. Clear Calibration...............................................................................................................17
8. Measurement..............................................................................................................................17
9. Maintenance & Care ...................................................................................................................18
10. Warnings & Errors......................................................................................................................19
11. Accessories................................................................................................................................19
Certification......................................................................................................................................20
Recommendations for Users...............................................................................................................20
Warranty .........................................................................................................................................20
Dear Customer,
Thank you for choosing a Hanna Instruments®product.
Please read this instruction manual carefully before using this instrument as it provides the necessary information
for correct use of this instrument as well as a precise idea of its versatility.
If you need additional technical information, do not hesitate to e‑mail us at [email protected].
Visit www.hannainst.com for more information about Hanna Instruments and our products.

3 Preliminary Examination
1. PRELIMINARY EXAMINATION
Remove the instrument and accessories from the packaging and examine it carefully. For further assistance,
please contact your local Hanna Instruments office or email us at [email protected].
Each HI981520 is supplied with:
• HI1286 pH electrode
• Attached conductivity and temperature probe
• pH 7.01 buffer solution, 20 mL sachet (2 pcs.)
• pH 10.01 buffer solution, 20 mL sachet (2 pcs.)
• 35.00 ppt salinity calibration solution, 20 mL sachet (2 pcs.)
• Electrode cleaning solution, 20 mL sachet (2 pcs.)
• Suction cup with clip (2 pcs.)
• Self‑adhesive fastener (2 pcs.)
• 12 Vdc power adapter
• Probe quality certificate
• Quick reference guide with QR code for manual download and instrument quality certificate
Note: Save all packing material until you are sure that the instrument works correctly. Any damaged or defective
item must be returned in its original packing material with the supplied accessories.

General Description & Intended Use 4
2. GENERAL DESCRIPTION & INTENDED USE
Testing and monitoring salinity in saltwater aquariums is an ongoing task.
The HI981520 is a vertical‑mount unit that monitors and displays the conductivity (measured with attached
probe) and the pH level (replaceable pH electrode).
Each parameter can be configured for high/low operating mode and the results are displayed on a large, easy
to read LCD.
The system can be calibrated at one or two points for pH and at one point for conductivity.
Seawater salinity is expressed in either parts per thousand (ppt), Practical Salinity Units (PSU), or Specific
Gravity (S.G.).
ppt
Measurements expressed in ppt are based on the Natural Seawater Scale that extends from 0.00 to 80.00 g/L
and covers 10 to 31 °C temperature range. It determines the salinity based upon a conductivity ratio of sample
to standard seawater at 15 °C and an approximate salinity value of 35 in seawater.
PSU
The practical salinity of seawater relates the ratio of electrical conductivity of a normal seawater sample at
15 °C and 1 atmosphere to a potassium chloride solution (KCl) with a mass of 32.4356 g/Kg water at the same
temperature and pressure. Under these conditions the ratio is equal to 1 and S=35. The practical salinity scale
may be applied to values 0 through 42.00 psu at temperatures between 0 to 35 °C.
Specific Gravity (S.G.)
Specific Gravity, or relative density, is expressed as the ratio of the density of seawater, at a specific temperature,
relative to the density of the same volume of pure water at a specific temperature.
The probes are secured with suction cups to the back of an aquarium (tank) and are suited for continuous
measurement of conductivity and associated parameters required in applications such as seawater, saltwater
aquariums, or aquaculture.
The distance between monitored sample and monitor unit extends to 2 m (6.6’) probes cable length.
The system is simple to install (self‑adhesive or screw mount) and easy to setup and use.
Main Features
• Two Alarm operating modes (High/Low Value) for each supported parameter
•
High/Low Alarm generated when measured value exceeds or drops below configured parameter High/Low
Value
• Acoustic signal generated each time an alarm is triggered
• The EC probe contains an integral temperature sensor that simplifies installation
• All readings are compensated for variations in temperature
• Temperature is displayed in °C or °F along with pH and EC readings
• Easy to read LCD display

5 Specications
3. SPECIFICATIONS
3.1. MONITOR
pH
Range* 0.0 to 14.0 pH
Resolution 0.1 pH
Accuracy ±0.2 pH
Calibration Manual or automatic two‑point calibration in 7.01 and 10.01 pH
ppt
Range 0.0 to 70.0 ppt (g/L)
Resolution 0.1 ppt (g/L)
Accuracy ±1.0 ppt between 0.0 ppt and 40.0 ppt
±2.0 ppt between 40.0 ppt and 70.0 ppt
Calibration Automatic, single point in 35.00 ppt
PSU
Range 0.0 to 70.0 PSU
Resolution 0.1 PSU
Accuracy ±1.0 PSU between 0.0 PSU and 40.0 PSU
±2.0 PSU between 40.0 PSU and 70.0 PSU
S.G.
Range 1.000 to 1.041 S.G.
Resolution 0.001 S.G.
Accuracy ±0.001 S.G.
Temperature
Range 0.0 to 50.0 °C (32.0 to 122.0 °F)
Resolution 0.1 °C / 0.1 °F
Accuracy ±0.5 °C / ±1.0 °F
Compensation Automatic, 5 to 50 °C (41 to 122 °F)
Alarm
pH
High or Low with Enable or Disable optionEC
Temperature
High/Low Value with High/Low alarm Enabled
Probes pH HI1286
EC Attached
Power supply 12 Vdc adapter (included) from 115 Vac, and 230 Vac
Environment 0 to 50°C (32 to 122°F); RH max 95%, non‑condensing
Casing IP65 ingress protection
Dimensions 125 x 185 x 38 mm (4.92 x 7.28 x 1.49”)
Weight 300 g (10.6 oz)
* The range may be limited by the probe’s limits.

Specications 6
3.2. PROBES
HI1286 pH Electrode
Range 0 to 13 pH
Recommended operating temperature 0 to 80 °C (32 to 176 °F)
Body PEI
Junction PTFE
Reference Double junction, Ag/AgCl
Electrolyte Polymer
Tip Spheric (Ø 7.5 mm / 0.29”)
Outer diameter 12 mm (0.47”)
Overall length 160 mm (6.29”)
Maximum pressure 3 bar (44 psi)
Cable Coaxial, 2 m (6.56’)
Connection BNC
The PEI (Polyetherimide) resin body is easy to clean and resistant to many aggressive chemicals.
The porous PTFE (Polytetrafluoroethylene) junction is equally resistant to aggressive chemicals.
The double junction design presents a silver‑free electrolyte solution interacting with the sample, making the
electrode less susceptible to clogging and guaranteeing a fast response and stable reading.
Attached EC & Temperature Probe
Range
0.0 to 70.0 ppt
0.0 to 70.0 PSU
1.000 to 1.041 S.G.
Recommended operating temperature 0 to 50 °C (32 to 122 °F)
Body Polypropylene (PP)
Conductivity sensor Material ABS
Electrode Graphite
Temperature sensor AISI 316 stainless steel
Outer diameter 12.50 mm (0.49”)
Overall length 155 mm (6.10”)
Maximum pressure 3 bar (44 psi)
Cable Coaxial, 2 m (6.56’)
Built‑in temperature sensor at the tip of the EC sensor allows for rapid determination of the sample temperature
and a high‑accuracy temperature reading.

7 Functional & Keypad Description
4. FUNCTIONAL & KEYPAD DESCRIPTION
Front & Rear View
CALSETUP
Marine Monitor
26.1
32.0
8.4
6
1
3 5
2
4
4
5
3
1. Liquid Cristal Display (LCD)
2. Keypad
3. Power adapter cable
4. pH electrode DIN connector
5. Conductivity (EC) probe cable
6. Mounting holes
Keypad Description
tPress to enter/exit setup menu.
z Press to enter/exit calibration menu.
e Press to edit items.
a v Press to navigate menus and select items.
w Press to exit setup/calibration or cancel value edit (revert to previous value).

Installation 8
LCD Description
31 2
7
8
9
10
11
12
4 5
1413
15
6
18
17
16
1. Setup menu tag ( S)
2. pH Alarm indicators, High ( U) or Low ( D)
3. First LCD line, pH reading
4. First LCD line measurement unit ( pH )
5.
Automatic temperature compensation tag ( ATC )
6. pH calibration buffer tags ( 70)
7. Stability indicator ( %)
8. Calibration menu tag ( C)
9. Alarm tag ( ALARM )
10. Second LCD line, conductivity reading
11. EC Alarm indicators, High ( U) or Low ( D)
12. Third LCD line, message area / temp. reading
13. Third LCD line, temperature unit (°C or °F)
14. Temp. Alarm indicators, High (U) or Low (D)
15. Navigation arrows ( <u
d>) available in setup
or calibration menu
16. Second LCD line, conductivity measurement unit
( ppt, PSU, SG )
17. EC tag ( E)
18. Calibrated tag ( CAL )
5. INSTALLATION
Monitor Mount
Supplied pre‑cut strips feature a strong adhesive that adheres to most smooth surfaces e.g. glass, metal, tile.
• the rough side should be affixed to the (tank) wall
• the smooth side affixed to the monitor
1. Clean the surface the strip is affixed to.
2. Peel off the protective backing and firmly press against the surface.
3. Allow adhesive bond to set for 24 hours before mounting the instrument.
Note: Do not reuse the strips.

9 Installation
Attach the Suction Cup & Secure the Probe
1. Clean and dry the surface the cup is affixed to.
2. Wipe clean (soapy water) the inside of the cup and pat dry.
3. Stick the cup on the aquarium (tank) wall.
4. Firmly press the suction cup down in the middle.
(with use, regularly press the cup down to get rid of any air pockets)
5. Allow the seal to set before clicking in the probe.
6.
Using the cup, secure the probe to the back of the aquarium (tank) so that the
temperature sensor (EC) and junction (pH) part of the probe is submerged.
Note: Regularly check the suction cup grip.
Alternative Screw Mount Option (user supplied)
1. Prepare the correct screws and screwdriver.
2. Use the keyholes at the top and bottom of the monitor
panel as a reference to mark the position of the screw
holes on the wall.
3. Drill the screw holes.
4. Install screw anchors if attaching to masonry.
5. Align the panel keyholes over the drilled holes.
6. Secure controller in place by installing screws in the holes.

Setup 10
6. SETUP
• Press tkey to enter/exit setup menu.
• Press a/ v key to navigate the menu and select items
• Press e key to edit items. Press a/ v key to edit values (blinking).
• Press e key after editing to save the value or w key to exit edit mode without saving.
• Press t key to exit setup and save changes.
General Settings (Options / Default)
Temperature Unit
°C or °F
(°C)
°C
TEMP
°F
TEMP
Salinity Unit
PPt, PSu, SG
(PPt)
PPt
SALINITY
PSu
SALINITY
SG
SALINITY
Backlight
On or Off
(On)
On
BACKLIT
OFF
BACKLIT
Key Beeper
On or Off
(On)
On
KEY BEEP
OFF
KEY BEEP
Alarm Sound
On or Off
(On)
On
ALARM SO
OFF
ALARM SO
“ALARM SOUND” is scrolled on the bottom of the LCD.

11 Setup
pH Alarm (Options / Default)
pH High Alarm
Enabled (En), Disabled (dIS)
(Enabled)
En
PH HIGH
dIS
PH HIGH
pH High Value
0.1 to 14.0 pH *
(8.6 pH)
8.6
PH HIGH
8.8
PH HIGH
With pH High Alarm configured as enabled ”PH HIGH VALUE” is scrolled on the bottom of the LCD.
Actual pH value (editable) is displayed blinking.
Press eto enter edit mode and use a/ vto change value. Press eto save.
pH Low Alarm
Enabled (En), Disabled (dIS)
(Enabled)
En
PH LOW
dIS
PH LOW
pH Low Value
0.0 to 13.9 pH *
(7.7 pH)
7.7
PH LOW V
7.9
PH LOW V
With Low Alarm configured as enabled “PH LOW VALUE” is scrolled on the bottom of the LCD.
Actual pH value (editable) is displayed blinking.
Press eto enter edit mode and use a/ vto change value. Press eto save.
* Available range changes based upon other settings. High alarm value must be set higher than low alarm
(e.g. if low alarm was set 7 pH, then high alarm range is 7.1 to 14 pH).

Setup 12
EC Alarm (Options / Default)
EC High Alarm
Enabled (En), Disabled (dIS)
(Enabled)
En
EC HIGH
dIS
EC HIGH
EC High Value
0.1 to 70.0 ppt * (37.0 ppt)
0.1 to 70.0 PSU * (37.0 PSU)
1.001 to 1.041 SG * (1.028 SG)
37.0
EC HIGH
38.5
EC HIGH
With EC High Alarm configured as enabled “EC HIGH VALUE” is scrolled on the bottom of the LCD.
Actual EC value for high alarm (editable) is displayed blinking.
Press eto enter edit mode and use a/ vto change value. Press eto save.
EC Low Alarm
Enabled (En), Disabled (dIS)
(Enabled)
En
EC LOW
dIS
EC LOW
EC Low Value
0.0 to 69.9 ppt * (33.0 ppt)
0.0 to 69.9 PSU * (33.0 PSU)
1.000 to 1.040 SG * (1.025 SG)
33.0
EC LOW V
34.5
EC LOW V
With EC Low Alarm configured as enabled “EC LOW VALUE” is scrolled on the bottom of the LCD.
Actual EC value for low alarm (editable) is displayed blinking.
Press eto enter edit mode and use a/ vto change value. Press eto save.
* Available range changes based upon other settings. High alarm value must be set higher than low alarm
(e.g. if low alarm was set 10.0 ppt, then high alarm range is 10.1ppt to 70 ppt).

13 Setup
Temperature Alarm (Options / Default)
Temperature High Alarm
Enabled (En), Disabled (dIS)
(Enabled)
En
TEMP HIG
dIS
TEMP HIG
“TEMP HIGH” is scrolled on the bottom of the LCD.
Temperature High Value
0.1 to 50.0 °C* (26.6 °C)
32.1 to 122.0 °F* (80.0 °F)
26.6
TEMP HIG
28.6
TEMP HIG
With Temperature High Alarm configured as enabled “TEMP HIGH VALUE” is scrolled on the LCD.
Actual high alarm temperature value (editable) is displayed blinking.
Press eto enter edit mode and use a/ vto change value. Press eto save.
Temperature Low Alarm
Enabled (En), Disabled (dIS)
(Enabled)
En
TEMP LOW
dIS
TEMP LOW
Temperature Low Value
0.0 to 49.9 °C* (23.3 °C)
32.0 to 121.9 °F* (74.0 °F)
23.3
TEMP LOW
25.3
TEMP LOW
With Temperature Low Alarm configured as enabled “TEMP LOW VALUE” is scrolled on the LCD.
Actual low alarm temperature value (editable) is displayed blinking.
Press eto enter edit mode and use a/ vto change value. Press eto save.

Calibration 14
7. CALIBRATION
Operation
1. Press zkey to enter calibration mode.
2. Press a/ v key to toggle between pH and EC modes.
3. Press ekey to start calibration and wkey to exit calibration.
7.1. pH
Calibrate the probe frequently for improved accuracy. Additionally, calibrate the probe:
• before installation
• whenever the probe is replaced
• after periodic maintenance
Always use fresh calibration buffers and perform electrode maintenance prior to calibration (see “Maintenance
& Care” section).
Preparation
Pour the buffer solution into clean beakers. If possible, use plastic beakers to minimize any EMC interferences.
For accurate calibration and to minimize cross‑contamination, use two beakers, one for rinsing the probe and
one for calibration.
Remove the pH electrode protective cap.
Place both electrodes in pH calibration buffers to have read values temperature compensated correctly.
Procedure
One‑ or two‑point calibration can be performed using one of the two standard buffer solutions: 7.01 or 10.01 pH.
When a two‑point calibration is required, use 7.01 pH buffer as first calibration point.
One-Point Calibration
1. Press zkey to enter calibration mode. Selected calibration mode is displayed blinking.
PH
EC
2. Press ekey to start. “7.01 pH USE” is displayed as calibration point.
7.01
USE

15 Calibration
3. Place the electrodes in 7.01 pH or 10.01 pH buffer solution.
Dislodge any bubbles that may adhere.
When the buffer is recognized “REC” is displayed. “WAIT” is displayed until the reading is stable
and the calibration is accepted.
7.01
REC
7.01
WAIT
4. If 7.01 pH was used, press wkey to save calibration point and exit calibration mode.
If 10.01 pH was used, the calibration point is automatically saved and the instrument returns to
measurement mode.
Two-Point Calibration
5. After 7.01 pH has been accepted, the ”10.01 pH USE”message is displayed.
10.01
USE
6. Place the electrodes in second calibration buffer.
When the buffer is recognized “REC” is displayed. “WAIT” is displayed until the reading is stable
and the calibration is accepted.
10.01
REC
10.01
WAIT
After the second calibration buffer has been accepted, the”SAVE” message is displayed and the instrument
returns to measurement mode.
The “CAL” tag is displayed in measurement mode.
SAVE
10.0
10.5
21.8

Calibration 16
7.2. CONDUCTIVITY
Calibrate the probe frequently for improved accuracy. Additionally, calibrate the probe:
• before installation
• whenever the probe is replaced
• after periodic maintenance
Always use fresh calibration solutions and perform electrode maintenance prior to calibration (see “Maintenance
& Care” section).
Preparation
Pour standard solution into clean beakers sufficient to cover the sensing portion of the probe.
If possible, use plastic beakers to minimize any EMC interferences. For accurate calibration and to minimize
cross‑contamination, use two beakers, one for rinsing the probe and one for calibration.
Procedure
• Raise and lower the probe in the standard to ensure the entire cell area is filled with standard.
• Shake any bubbles off the two electrodes.
• Center probe in beaker away from beaker walls.
One-point calibration
One‑point calibration can be performed using 35.00 ppt salinity standard solution.
1. Press zkey to enter calibration mode.
2. Press vkey to select EC calibration. Selected calibration mode is displayed blinking.
PH
EC
3. Press ekey to start. “35.0 ppt USE” message is displayed as calibration point.
35.0
USE
4. Used standard is automatically recognized. When the standard is recognized “REC” is displayed. “WAIT”
is displayed until the reading is stable and the calibration is accepted.
35.0
REC
35.0
WAIT

17 Measurement
After the standard is accepted, ”SAVE” is displayed and the instrument returns to measurement mode.
SAVE
10.0
35.0
21.8
7.3. CLEAR CALIBRATION
1. Press vkey to clear any saved calibration. “CLEAR” is displayed blinking.
7.01
CLEAR
2. Press e key to confirm. The calibration is deleted and the instrument returns to measurement mode.
No “CAL” tag in measurement mode indicates that the probe is no longer calibrated.
8. MEASUREMENT
1. Connect supplied 12 Vdc power adapter to the instrument and plug the unit to the mains.
All LCD segments are briefly displayed and the instrument enters measurement mode.
2. Slide the BNC connector sheath down and connect the pH electrode to the BNC socket.
Slide the protective sheath back up.
For maximum water protection, ensure the BNC connector is completely covered.
3. Remove the pH electrode protective cap.
4. Attached conductivity probe is automatically recognized.
5. After configuring the monitor menu, probe, and all accessories, the instrument is ready for measurement.
6. With the suction cups affixed in position, secure the probes and immerse the tips 4 cm/1½” into the
monitored sample. For best accuracy, the probes should not touch.
7. Allow the readings to stabilize.
“CAL” tag in measurement mode indicates that the probe has been calibrated.
10.0
10.5
21.8

Maintenance & Care 18
9. MAINTENANCE & CARE
Cleaning, calibrating, and appropriate storage are essential for accurate readings and extend the life of the probes.
General Maintenance
• Inspect, clean, and calibrate the probe at regular intervals.
• Inspect all connectors for corrosion and replace if necessary.
• Inspect the cable. The connection cable must be intact.
• Calibrate the probe after prolonged storage or cleaning.
• After use rinse the probe with tap water and dry it.
pH conditioning
• Remove the protective cap.
• Shake down the probe to eliminate any air bubbles inside the glass bulb.
•
If the bulb and/or junction are dry, soak the electrode in HI70300 Storage solution for at least 30 minutes.
• To ensure a quick response time, the glass bulb and the junction should be kept moist and not allowed to dry.
pH cleaning
new probe
• Remove the protective cap.
• Rinse off salt deposits with water.
probe removed from tank
1.
Rinse the sensor in flowing water then clean by soaking in HI7061 Electrode cleaning solution for general
use for 15 minutes or use an application‑specific cleaning solution.
2. Rinse with water and soak in HI70300 Storage solution for at least 30 minutes before reinstalling it.
3. Calibrate before use.
Storage
• When the probe is removed from the tank for more than 1 h, fill the protective cap with HI70300 Storage
solution and tighten the cap on the sensor.
• Do not store the probe in distilled or deionized water.
Conductivity probe cleaning
•
To help control algae growth, clean the probe with HI7061 General cleaning solution on a weekly basis.
• Monthly, a more thorough cleaning of the EC sensor with a non‑abrasive detergent is advised.
• Inspect the inside portion of the probe, where the two electrodes (prongs) are, is free of foreign material.
• If any solids are detected in this area, use a soft material such as cotton swabs, to dislodge the material.
Pass repeatedly the cotton swab between the two pins and inner surface.
•
Rinse under a stream of running tap water (and jet the stream into the cell) to remove salt or mineral coatings.
• Shake excess water from the probe.
• Recalibrate: place the probe into EC calibration standard.
• Store the probe clean.

19 Warnings & Errors
10. WARNINGS & ERRORS
HI981520 displays warning messages when erroneous conditions appear and readings are outside supported range.
---
WRONG
Buffer solution is not recognized.
Probe has not been placed in solution or the reading is outside accepted range.
Change the solution and/or clean the electrode.
14.0
1.027
20.1
Measured value is out of range.
9.0
10.2
---
Temperature sensor not reading correctly.
Contact Hanna®technical support at [email protected]
11. ACCESSORIES
Ordering Codes Description
HI1286 Double junction pH electrode with 2 m (6.6’) cable
HI70007P pH 7.01 buffer solution, 20 mL sachet (25 pcs.)
HI7007M pH 7.01 buffer solution, 230 mL bottle
HI70010P pH 10.01 buffer solution, 20 mL sachet (25 pcs.)
HI7010M pH 10.01 buffer solution, 230 mL bottle
HI70024M 35.00 ppt salinity calibration solution, 230 mL bottle
HI70024P 35.00 ppt salinity calibration solution, 20 mL sachet (25 pcs.)
HI70300M Storage solution, 230 mL bottle
HI700601P General purpose cleaning solution, 20 mL sachet (25 pcs.)
HI7061M General purpose cleaning solution, 230 mL bottle
HI710005 115 Vac / 12 Vdc power adapter
HI710006 230 Vac / 12 Vdc power adapter

Certication 20
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.
Ensuring proper product disposal prevents potential negative consequences for the environment and human health.
For more information, contact your city, your local household waste disposal service, or the place of purchase.
RECOMMENDATIONS FOR USERS
Before using this instrument, make sure that it is entirely suitable for your specific application and for the
environment in which it is used. Any variation introduced by the user to the supplied equipment may degrade
the instrument’s performance. For your and the instrument’s safety do not use or store the instrument in
hazardous environments.
WARRANTY
HI981520 is warranted for a period of two years against defects in workmanship and materials when used
for its intended purpose and maintained according to instructions. pH probe 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.
MAN981520 07/22