Hanna Instruments Gro Line HALO 2 User manual

INSTRUCTION MANUAL
HI9810302
Wireless pH Tester
for Soil
with built-in specialized electrode

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.
Thank you for choosing a Hanna Instruments product.
Please read this instruction manual carefully before using this instrument.
This manual will provide you with 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] or
view our contact list at www.hannainst.com.
Dear
Customer,

3
TABLE OF CONTENTS
TABLE OF CONTENTS
1. Preliminary Examination ..................................................................................................................4
2. Specifications..................................................................................................................................4
3. General Description & Intended Use ..................................................................................................5
Operating Modes......................................................................................................................5
Probe Features.........................................................................................................................5
4. Functional Description & LCD Display.................................................................................................5
5. General Operations..........................................................................................................................6
Turning the Tester On & Off .......................................................................................................6
Battery Replacement ................................................................................................................6
6. Setup .............................................................................................................................................6
Temperature Unit ....................................................................................................................6
Auto-Off Interval ......................................................................................................................6
Buffer Set................................................................................................................................6
pH Resolution..........................................................................................................................6
Bluetooth®Mode.....................................................................................................................6
Bluetooth Pairing .....................................................................................................................7
Date & Time ............................................................................................................................7
7. Bluetooth........................................................................................................................................7
8. Hanna Lab Application.....................................................................................................................7
Tag a Measurement..................................................................................................................7
9. Calibration......................................................................................................................................7
Preparation..............................................................................................................................7
Procedure ................................................................................................................................7
Stand-Alone Tester (Up to Three-Point Calibration)......................................................................8
With Hanna Lab App (Up to Four-Point Calibration) ....................................................................8
10. Measurement................................................................................................................................8
11. Care & Maintenance ......................................................................................................................8
Refilling the Electrode...............................................................................................................9
Storage ...................................................................................................................................9
12. Warning & Error Messages .............................................................................................................9
13. Accessories....................................................................................................................................9
Certification........................................................................................................................................10
Recommendations For Users................................................................................................................10
Warranty ...........................................................................................................................................10
The Bluetooth®word mark and logos are registered trademarks owned by Bluetooth SIG, Inc.

4
PrELimiNAry ExAmiNATiON
1. PRELIMINARY EXAMINATION
Remove the tester and accessories from packaging and examine them carefully. For further assistance, please contact your
local Hanna Instruments office or email us at [email protected].
Each HI9810302 is supplied with a starter kit consisting of:
• pH 4.01 buffer solution, 20 mL sachet (2 pcs.)
• pH 7.01 buffer solution, 20 mL sachet (2 pcs.)
• Cleaning solution for soil deposits, 20 mL sachet (1 pc.)
• Cleaning solution for humus deposits, 20 mL sachet (1 pc.)
• Electrode storage solution, 13 mL dropper bottle
• Gelled bridge electrolyte, 13 mL dropper bottle
• 3V Lithium battery – CR2032
• Instrument quality certificate and 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.
2. SPECIFICATIONS
Range
pH 0.00 to 12.00 pH
mV * pH/mV conversion
Temperature 0.0 to 60.0 °C (32.0 to 140.0 °F)
Resolution
pH 0.01 or 0.1 pH
mV * 0.1 or 1 mV
Temperature 0.1 °C; 0.1 °F
Accuracy pH ±0.05 pH
Temperature ±0.5 °C; ±0.9 °F
Calibration
Up to three points or four points *
Automatic buffer recognition with Standard buffers
Hanna (pH 1.68 *, 4.01, 7.01, 10.01) or NIST (pH 1.68 *, 4.01, 6.86, 9.18)
Temperature compensation Automatic (ATC) or Manual (MTC) *
Electrode
Body material Polyvinylidene Fluoride (PVDF)
Glass Low Temperature (LT)
Junction Open
Reference cell Double, Ag/AgCl
Electrolyte Gel (refillable)
Tip / Shape Conic, Ø 6 x 10 mm (Ø 0.23 x 0.39”)
Outer diameter 8 mm (0.31“)
Length 75 mm (2.95”)
Battery type CR2032 3V Lithium
Battery life Approximately 1000 hours (500 hours with Bluetooth enabled)
Environment 0 to 50 °C (32 to 122 °F)
IP rating IP65
Dimensions / Weight 51 x 150 x 21 mm (2.0 x 5.9 x 0.8”) / 45 g (1.6 oz.)
* Available with Hanna Lab App
Note: The tester can display measurements from —2.00 to 16.00 pH. Measurements outside of the pH range will flash.

5
GENErAL DESCriPTiON & iNTENDED USE
3. GENERAL DESCRIPTION & INTENDED USE
HI9810302 is a professional wireless pH tester, part of Hanna Instruments HALO2 family.
• The integrated Bluetooth module allows the tester to be connected to a compatible smart device with the Hanna Lab App.
• The tester has a compact, waterproof casing, and automatic pH calibration at up to three points, or four points when
used with the Hanna Lab App.
• Automatically compensated temperature readings are displayed on a large LCD.
• Accurate and easy to use, the tester is ideal for agricultural, hydroponics, and greenhouse growers that need to monitor
the pH of the soil.
Operating Modes
The HI9810302 can be used as a stand-alone pH tester or connected to the Hanna Lab App.
The Hanna Lab App turns a compatible smart device into a full-featured pH meter. Features include: electrode condition,
GLP with times-tamp, live-readings, mV resolution, manual temperature compensation, stability criteria, calibration reminder,
pH (mV) and temperature alarms, tester ID, and data sharing.
Probe Features
The rugged PVDF electrode body is easy to clean. Resistant to most chemicals (e.g. solvents, sodium hypochlorite),
ultraviolet light, and fungal growth, the PVDF body also has high-abrasion resistance and mechanical strength.
The conical tip allows for easy penetration into solids and semisolids.
The PVDF outer junction sleeve can be removed and cleaned. Once cleaned, a small amount of supplied gel electrolyte is
added and the junction is refreshed, improving the measurement and extending the life of the tester.
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.
Built-in temperature sensor at the tip of the pH electrode allows for rapid determination of the sample temperature and a
high-accuracy temperature reading.
4. FUNCTIONAL DESCRIPTION & LCD DISPLAY
Front & Back view
Soil
pH Tester
LCD ON/
OFF button
Maximum immersion level
pH Probe
Recommended
immersion level
Removable
sleeve
Soil
pH Tester
SN: XXXXXXXXX
Made in Romania
HI9810302
2
1
0
4
-
0
1
-
0
A
6
8
7
0
9
2
2
1
:
C
I
4
0
B
9
A
A
2
:
D
I
C
C
F
s
n
i
a
t
n
C
o
R
Setup
button
Battery cover
LCD display
&
!
#
œ.œ.œ.œ
88.8.8
765
10
9
8
1
2
3
4
1 Calibration indicator
2 Stability indicator
3Battery percentage indicator
4 Battery icon
5 Bluetooth icon
6 Temperature compensation
7Second LCD line
8 Temperature unit
9 First LCD line
10 Measurement unit

6
GENErAL OPErATiONS
5. GENERAL OPERATIONS
Turning the Tester On & Off
• Turn the tester face down. Rotate the battery cover on the back of the tester counterclockwise and set it aside. Remove
the battery insulation film.
• Pressthe ON/OFF button to turn the tester on or off. Initialization screen displays all LCD segments, followed by the
battery percentage. The tester enters measurement mode. Before the tester turns off, “OFF PWR” is displayed briefly.
• Press and hold the ON/OFF button to turn the tester off when connected to Bluetooth.
Battery Replacement
1. Turn off the tester.
2. Turn the tester face down and rotate the battery cover counterclockwise. Set it aside.
3. Press the metallic pin to push old battery out.
4. Place the new battery with positive (+) sign facing out.
5. Reset the date and time in the setup menu or connect to the Hanna Lab App to update it
automatically.
6. Align the mark on the cover with the open lock icon ( ) on the case. Rotate the cover
clockwise until the mark on the cover aligns with the closed lock icon ( ).
Note: Only use specified battery type. Dispose of old battery in accordance with local regulations.
6. SETUP
The Setup button is located inside the battery compartment. After Setup configuration, replace the cover.
Setup Menu Navigation
• Press the Setup button to enter Setup mode and navigate menu items.
• To exit Setup mode, press the Setup button after “SEt TIME” option is displayed.
• Press the ON/OFF button to configure menu item options.
Temperature Unit
Option: °C or °F
Press ON/OFF button to select desired
temperature unit.
°C
TEMP
°F
TEMP
Auto-Off Interval
Option: 8, 60 min., or “----” (disabled)
To save battery life, after the selected
auto-off interval has elapsed, the tester will
automatically turn off. Press ON/OFF button to
select desired interval.
8
AOFF
60
AOFF
----
AOFF
Buffer Set
Option: 7.01 pH (Hanna) or 6.86 pH (NIST)
Press ON/OFF button to select the calibration
buffer set (Hanna or NIST).
7.01
BUFF
6.86
BUFF
pH Resolution
Option: 0.01 pH or 0.1 pH
Press the ON/OFF button to select resolution. 0.01
RES
0.1
RES
Bluetooth Mode
Option: On, PAIr, or OFF
Press ON/OFF button to select Bluetooth
option at start-up. &
On
BLU &
PAIr
BLU &
OFF
BLU
Metallic pin

7
BLUETOOTh
Bluetooth Pairing
Option: dEL PAIr
Press ON/OFF button to delete saved paired
device. &
dEL
PAIR
Date & Time
Option: SEt TIME
Press ON/OFF button to set the date and time.
Option: YEAR, MO, DAY, HOUR, and MIN
2021
YEAR
3
MO
15
DAY
Use the Setup button to select the option and press the ON/OFF button to change the selected option.
7. BLUETOOTH
With “PAIr BLU” or “On BLU” selected in Setup, the Bluetooth icon (&) will blink for up to 45 seconds, indicating the
tester is in discoverable mode. Once connected, the icon will stop blinking. If not connected, the icon is not displayed.
• Select “OnBLU”, to enable Bluetooth without bonding.
• Select “PAIrBLU”, to enable Bluetooth with bonding. A 6-digit bonding pin is displayed the first time the tester and
smart device are paired. Once the devices are paired, the bonding pin is not required when reconnected.
• Select “OFFBLU”, to disable Bluetooth.
• Select “dEL PAIR”, to delete all paired devices. If PAIr BLU is enabled, a bonding pin will need to be re-entered.
8. HANNA LAB APPLICATION
• Download and install the Hanna Lab App. See www.hannainst.com for latest compatibility requirements and download
information.
• Consult the Help section of the application for information on calibration, measurement, data logging, and sharing.
• When the tester is in discoverable mode, it will appear in the list of “Available Devices”.
• Within the application, tap “Connect” to pair the tester with the device. All readings are transmitted directly to the
application.
Tag a Measurement
Once connected to the application, the ON/OFF button can be pressed to tag the current reading.
• Press the ON/OFF button from measurement mode. The display shows “SEt TAG”, followed by “-TAG”.
• The reading on the application will flash green and the note icon ( ) will be displayed. Tap the note icon ( ) to
add an annotation.
&
10.12
25.6 &
-
TAG
9. CALIBRATION
Preparation
1. Unscrew the top collar to vent the cap before removing the probe from the plastic storage tube. Save cap and collar
for probe storage.
2. Rinse off any storage solution or salts that may be on the body.
3. Verify there is solution inside the pH bulb by shaking the probe down to restore continuity as the solution may have
moved up the stem during shipping.
Procedure
Calibrate the electrode at the temperature it will be used.
For most applications it is recommended to start with pH 7.01 buffer (or pH 6.86).
To restore factory defaults, press and hold the ON/OFF button. “CAL CLR” is displayed.

8
mEASUrEmENT
Stand-Alone Tester (Up to Three-Point Calibration)
1. Press and hold ON/OFF button until “CAL MODE” is displayed.
2. When “7.01 USE” or “6.86 USE” is displayed with “CAL” tag blinking, place the tip of the electrode in the
correct buffer.
CAL
MODE
7.01
USE
3. The buffer is automatically recognized. “WAIT” is displayed with the stability indicator blinking until the reading is stable.
Wait until the measurement is stored and the stability indicator disappears.
7.01
REC
#7..01
WAIT
4. To save a one-point calibration and return to measurement mode, press the ON/OFF button.
“CAL SAVE” is displayed briefly.
5. Place the electrode tip in the next buffer. Repeat step 3.
6. To save a two-point calibration and return to measurement mode, press the ON/OFF button.
“CAL SAVE” is displayed briefly.
7. Place the electrode tip in the next buffer. Repeat step 3.
After the third point has been stored, “CAL SAVE” is displayed briefly and the tester will return to measurement
mode automatically.
With Hanna Lab App (Up to Four-Point Calibration)
Connect the tester to the Hanna Lab App and follow the calibration procedure.
See the App Help section for the calibration procedure.
10. MEASUREMENT
The pH tester allows direct testing in the soil without taking samples or creating a slurry.
1. Inspect the pH probe to ensure the bridge electrolyte gel has not dried out. Refill if necessary.
2. Calibrate the pH probe.
3. Using an auger (HI721319), make a 20 mm (0.78”) hole down into the soil.
The hole needs to be the same depth each time to avoid pH discrepancies.
4. Add some distilled or deionized water to the hole; the soil should be damp but not saturated.
5. Rinse the electrode with tap water and insert into the hole.
6. Allow for the reading to develop or stabilize.
7. After measurement, gently rinse off leftover soil (avoid using cloth or wipe).
Note: Direct soil pH testing is not recommended if the ground is stony or hardened as the electrode can be damaged.
If the soil is stony or hard, take a representative soil sample and add HI7051 Soil preparation solution.
11. CARE & MAINTENANCE
• Never immerse the tester over the maximum immersion level.
• Fresh buffers should be used for each calibration. Once the sachets are opened the buffer value can change over time.
• If the electrode is slow or sluggish, soak it in cleaning solution for 20 minutes. Rinse with water and hydrate the
electrode in storage solution for a minimum of 30 minutes before calibrating.
• If measurements are taken successively, rinse the probe thoroughly in distilled or deionized water to eliminate
cross-contamination between measurements.

9
WArNiNG & ErrOr mESSAGES
Refilling the Electrode
• To remove the electrode sleeve, carefully rotate and slide it off (A). Set it to one side.
Note: Handle the probe with care, the pH electrode stem is made of glass.
• Rinse off any traces of electrolyte gel from sleeve. Soak the electrode tip in HI70061
General purpose cleaning solution (or HI700661, HI700663, HI700664) for
20 minutes. Rinse with distilled or deionized water.
• Refill the reference well with HI9071 Gelled bridge electrolyte (B).
• Replace the sleeve. Ensure the o-ring is fixed inside the electrode. Rinse off excess
gel with distilled or deionized water.
• Shake the probe down gently to eliminate any trapped air bubbles.
• Soak the probe in HI70300 Electrode storage solution for a minimum of 30 minutes before calibrating.
Storage
• To ensure a quick response, the glass tip and junction should be kept moist.
• When not in use, add a few drops of storage solution to the protective cap to keep the glass tip and the junction
hydrated. If storage solution is not available, pH 4.01 or pH 7.01 buffer can be used.
• Do not store the electrode in distilled or deionized water.
12. WARNING & ERROR MESSAGES
----
WRNG
“---- WRNG” displayed during calibration.
Invalid buffer.
Check the buffer value and use fresh buffer.
12.02
23.7
Measured value displayed blinking.
Measured value is out of electrode range.
Clean the electrode to improve condition.
!8.02
23.7
Battery icon (!) displayed blinking.
Battery is below 10 %, replace the battery.
BAtt
DEAD
“BAtt DEAD” and tester turns off.
Depleted battery, replace the battery.
13. ACCESSORIES
Ordering Information Product Description
pH Buffer Solution
HI50016-02 pH 1.68 buffer solution, 20 mL sachet (25 pcs.)
HI70004G GroLine pH 4.01 buffer solution, 20 mL sachet (25 pcs.)
HI70006P pH 6.86 buffer solution, 20 mL sachet (25 pcs.)
HI70007G GroLine pH 7.01 buffer solution, 20 mL sachet (25 pcs.)
HI70009P pH 9.18 buffer solution, 20 mL sachet (25 pcs.)
HI70010P pH 10.01 buffer solution, 20 mL sachet (25 pcs.)
HI77400P pH 4.01 & 7.01 buffer solution, 20 mL sachet (10 pcs., 5 each)
HI770710P pH 10.01 & 7.01 buffer solution, 20 mL sachet (10 pcs., 5 each)
A
B

10
CErTiFiCATiON
MAN9810302 05/21
CERTIFICATION
All Hanna Instruments conform to the CE European Directives.
Disposal of Electrical and 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, or the place of purchase.
RECOMMENDATIONS FOR USERS
Before using this product, make sure 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 tester’s performance. For your and the
tester’s safety do not use or store it in hazardous environments.
WARRANTY
HI9810302 is warranted for a period of one year against defects in workmanship and materials when used for its intended
purpose and maintained according to instructions. 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 tester 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 product, make sure it is properly packaged for complete protection.
Ordering Information Product Description
Electrode Cleaning Solution
HI70061G GroLine general purpose cleaning solution, 20 mL sachet (25 pcs.)
HI700661P General purpose cleaning solution for agriculture, 20 mL sachet (25 pcs.)
HI700663P Cleaning solution for soil deposits, 20 mL sachet (25 pcs.)
HI700664P Cleaning solution for humus deposits, 20 mL sachet (25 pcs.)
Electrode Storage Solution
HI70300G GroLine electrode storage solution, 20 mL sachet (25 pcs.)
HI70300-023 GroLine electrode storage solution, 230 mL
Electrode Fill Solution
HI9071 Gelled bridge electrolyte, 13 mL dropper bottle
Other Accessories
HI7051M Soil preparation solution, 230 mL
HI721319 Soil auger

Hanna Instruments reserves the right to modify the design, construction or appearance of its products without advance notice.
Regulatory Notices for the stand-alone, Bluetooth, low-energy module.
United States (FCC) FCC ID: 2AA9B04. This device complies with FCC Rules, Part 15 Subpart C “Intentional Radiators”
and Subpart B, Chapter §15.105. This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses,
and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may
cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause
harmful interference in which case, users are required to correct the interference at their own expense.
Canada (ISED) IC: 12208A-04. This device complies with Industry Canada license exempt RSS standard(s). Operation
is subject to the following two conditions: (1) this device may not cause interference, and (2) this device must accept any
interference, including interference that may cause undesired operation of the device. Le présent appareil est conforme
aux CNR d’Industrie Canada applicables aux appareils radio exempts de licence. L’exploitation est autorisée aux deux
conditions suivantes: (1) l’appareil ne doit pas produire de brouillage, et (2) l’utilisateur de l’appareil doit accepter tout
brouillage radioélectrique subi, même si le brouillage est susceptible d’en compromettre le fonctionnement.
Australia / New Zealand (RCM) BMD-300 complies with the AS/NZS 4268:2017.
Japan (MIC) South Korea (KCC)
R-CRM-Rgd-BMD-300
Brazil (ANATEL): Contains ANATEL approved module # 03154-18-11156.
Mexico (IFETEL): Este equipo contiene el módulo con IFT #: NYCE/CT/0146/17/TS.

World
Headquarters
Hanna Instruments Inc.
Highland Industrial Park
584 Park East Drive
Woonsocket, RI 02895 USA
www.hannainst.com
MAN9810302 Printed in ROMANIA