Hanna Instruments HI84530 User manual

INSTRUCTION MANUAL
HI84530
Total Acidity
Mini Titrator & pH Meter
for Water Analysis

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 worldwide contact list at www.hannainst.com.
Dear
Customer,

3
TABLE OF CONTENTS
TABLE OF CONTENTS
1. Preliminary Examination ..................................................................................................... 4
2. Specifications..................................................................................................................... 5
3. General Description & Intended Use ..................................................................................... 7
4. Principle of Operation ......................................................................................................... 9
5. Functional Description....................................................................................................... 10
6. Titrator Startup................................................................................................................. 13
7. Setup Menu ..................................................................................................................... 14
8. Guide to Display Codes...................................................................................................... 19
8.1. Pump Calibration Messages ..................................................................................... 20
8.2. pH Calibration Messages ......................................................................................... 21
8.3. Titration Messages .................................................................................................. 22
9. Electrode Preparation........................................................................................................ 23
10. Electrode Calibration Procedure........................................................................................ 24
11. pH Buffer Temperature Dependence.................................................................................. 28
12. Dosing Pump Installation ................................................................................................ 29
13. Dosing Pump Prime Procedure ......................................................................................... 30
14. Pump Calibration Procedure............................................................................................. 32
15. Titration Procedure.......................................................................................................... 35
15.1. Tips for an Accurate Measurement .......................................................................... 38
15.2. View / Delete Titrator Recorded Data....................................................................... 38
15.3. Titrator GLP Information......................................................................................... 40
16. pH Measurement............................................................................................................ 41
16.1. View / Delete Recorded pH Data............................................................................. 42
16.2. pH Meter GLP Information ..................................................................................... 43
17. PC Interface & Data Transfer............................................................................................ 44
18. Electrode Conditioning & Maintenance.............................................................................. 45
19. Troubleshooting Guide..................................................................................................... 46
20. Accessories..................................................................................................................... 48
Certification........................................................................................................................... 49
Recommendations for Users.................................................................................................... 49
Warranty .............................................................................................................................. 50

4
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 HI84530 mini titrator is supplied with:
• HI1131B pH electrode
• HI7662-T Temperature probe
• HI84530-70 Reagent kit for water analysis
• HI7082 Electrode fill solution
• 100 mL beaker (2 pcs.)
• Dosing pump valve
• 5 mL syringe
• 1 mL syringe with tip
• Capillary dropper pipette
• Tube set (aspiration tube with titrant bottle cap and dispensing tube with tip)
• Stir bar
• Power adapter
• Instrument quality certificate
• Instruction manual
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.

5
SPECIFICATIONS
2. SPECIFICATIONS
Titrator
Range
Low Range:
mg/L as CaCO3: 15.0 - 400.0 mg/L
meq/L: 0.3 - 8.0 meq/L
High Range:
mg/L as CaCO3: 300 - 4000 mg/L
meq/L: 6.0 - 80.0 meq/L
Resolution Low Range: 0.1 mg/L / 0.1 meq/L
High Range: 1 mg/L / 0.1 meq/L
Accuracy LR: ± 1 ppm or 3% of reading @ 25 °C, whichever is greater
HR: ± 15 ppm or 3% of reading @ 25 °C, whichever is greater
Sample volume 50 mL
Titration method Acid-base titration
Principle Endpoint titration: 8.30 pH / 3.7 pH
Pump speed 10 mL/min
Stirring speed 600 rpm
Log data Up to 200 samples
pH Meter
Range - 2.0 to 16.0 pH / - 2.00 to 16.00 pH
Resolution 0.1 pH / 0.01 pH
Accuracy ± 0.01 pH
pH calibration 1, 2 or 3 calibration points;
4 available buffers (4.01, 7.01, 8.30, 10.01)
Temperature
compensation Manual or automatic
mV Meter
Range -2000.0 to 2000.0 mV
Resolution 0.1 mV
Accuracy ± 1.0 mV
Log data Up to 200 samples (pH or mV)
Temperature
Range -20.0 to 120.0 °C (-4.0 to 248.0 °F)
Resolution 0.1 °C
Accuracy ±0.4 °C without probe error

6
SPECIFICATIONS
Electrode HI1131B
Temperature
Probe HI7662-T
Environment 0 to 50 °C (32 to 122 °F); max 95% RH non-condensing
Power supply 12 Vdc power adapter
Dimensions 235 x 200 x 150 mm (9.2 x 7.9 x 5.9”)
Weight 1.9 kg (67.0 oz.)
Required Reagents
HI84530 - 50 Low Range Titrant
HI84530 - 51 High Range Titrant
HI84530 - 55 Calibration Standard

7
GENErAL DESCrIPTION & INTENDED USE
3. GENERAL DESCRIPTION & INTENDED USE
The HI84530 is an affordable, easy to use microprocessor-based automatic mini titrator and pH
meter designed for the rapid and accurate analysis of Total Titratable Acidity in water. By eliminating
subjective factors including color indicators, errors in mathematical calculations or erratic titrant
additions from the measurement, the HI84530 makes Total Titratable Acidity analysis precisely.
The instrument benefits from Hanna Instruments’ many years of experience as a manufacturer of
quality analytical instruments. A clear and well-designed user interface makes the instrument intuitive
and simple to use.
The instrument employs a powerful and effective built-in algorithm to analyze the pH response to
determine the exact pH endpoint, then uses this to make the necessary calculations.
By simply pressing the Start key in Titrator mode, the instrument will automatically titrate the sample
to the endpoint. The current pH and temperature are continuous displayed during titration process.
The result is immediately displayed in the selected unit of measurement (mg/L or meq/L), then the
instrument is ready for another titration by pressing the Restart key.
A dedicated HELP key aids in setup, calibration, status and troubleshooting.
Other features:
• pH meter / mV meter
• Stir speed control
• Graphic mode to display the titration data
• Data can be stored using the log feature and then exported to a USB stick or transferred to a PC
using the USB connection
• Log on demand for up to 400 samples (200 for pH measurements; 200 for titration results)
• GLP feature, to view calibration data for pH electrode and pump
Significance of Use
Acidity is a quantitative measurement of a water samples ability to react with a strong base solution
to a specific pH value. Many chemical species can contribute to the acidity measurement depending
on the method of analysis. These species can include strong acids (hydrochloric acid, nitric acid,
sulfuric acid, etc.), weak acids (acetic acid, carbonic acid, etc.), and hydrolyzing salts (iron, aluminum,
manganese, etc.).
Acidity is an important parameter used to determine the quality of water (surface, drinking, waste
water). It is an essential monitoring device to define and control the pollution levels. Acidity affects
many things including chemical reaction rates, biological processes, and corrosiveness.
Water samples are subject to interferences including:
• Dissolved gases that contribute to acidity are lost or gained during sampling, transport or storage.
These gasses can include carbon dioxide and ammonia.
• Oily matter, suspend solids, precipitated and other waste matter can coat the glass electrode
causing a slow response time.

8
GENErAL DESCrIPTION & INTENDED USE
• The reaction rates for samples containing oxidizable or hydrolyzable ions (ferric iron, aluminum or
manganese) may be slow enough to cause drifting endpoints.
Acidity values can be determined in three ways:
• pH measurement
• Titration to a pH endpoint of 3.7 (methyl orange acidity, strong acidity)
• Titration to a pH endpoint of 8.3 (phenolphthalein acidity, total acidity)
The HI84530 mini titrator uses a method based on the Standard Methods of Water and Wastewater
Determination.
The water sample is titrated with sodium hydroxide until a fixed pH endpoint (8.3 or 3.7).
The endpoint is determined by the potentiometic input.

9
PrINCIPLE OF OPErATION
4. PRINCIPLE OF OPERATION
Water acidity determinations are based on the neutralization of all acidic species contained in the
sample by titration with a base (sodium hydroxide):
H++OH¯ H2O
In an ideal solution, the endpoint of an acidity titration corresponds stoichimetrically to the complete
neutralization of all the acids present. Due to the complex sample matrix, water acidity titrations are
typically titrated to a fixed pH endpoint. Unpolluted water samples that contain carbon dioxide as the
main source of acidity are typically titrated to a pH of 8.3, known as total acidity. While polluted water
that contains strong acids are typically titrated to a pH of 3.7, known as strong acidity. The endpoint
can be determined visually using a color indicator (i.e. phenolphthalein or methyl orange), however
this endpoint can be become objective depending on the analysts. The HI84530 removes this issue by
titrating to a fixed pH endpoint (8.3 or 3.7) determined by the user. For precise analysis the sample
size, volume of titrant added and titrant concentration must be known.
The HI84530 Total Acidity Mini Titrator utilizes a simple sample preparation, a high quality dosing
pump for titrant additions, potentiometric endpoint determination and instantaneous computations.
To maintain the high accuracy of the mini titrator a simple pump calibration is required. The pump
calibration uses a known quantity of a known solution to compensate for changes in the dosing
system, this procedure should be performed regularly.

10
FUNCTIONAL DESCrIPTION
5. FUNCTIONAL DESCRIPTION
Front View
2
38
9
7
6
15
4
1. Dosing pump valve
2. Aspiration tube
3. Titrant bottle
4. Dispensing tube
5. Syringe
6. Temperature probe
7. pH electrode
8. Electrode holder
9. Beaker
Top View
1
4
65
2 3
1. Titrant bottle
2. Dispensing tube
3. Electrode holder
4. Liquid Crystal Display (LCD)
5. Functional keys
6. Keypad

11
FUNCTIONAL DESCrIPTION
Rear View
3
2
1
5
6
7
4
1. Power switch
2. USB connector (PC interface)
3. USB connector (storage interface)
4. Power adapter
5. BNC electrode connector
6. Reference electrode connector
7. Temperature probe connector
Keypad Description
The keypad contains 8 direct keys and 3 functional keys with the following functions:
Press the functional key to select the virtual option displayed above it on the LCD.
Press ESC key to leave the current screen and to return either to the previous screen or to
the main screen. In Setup, exits a parameter without changing the value.
Press ARROW keys to modify the parameter values, to scroll the information displayed
while viewing a help screen or to move between the options from the instrument’s Setup.
Press CAL key to access the Electrode and Pump calibration options.
Press HELP key to access/exit the instrument’s contextual help.
Press LOG key to save the current mV/pH reading in pH meter mode and the titration result.
Press MENU key to enter Setup, Recall or GLP selection menu, while instrument is in pH
or Titration mode.
Press STIR key to start/stop the stirrer.
Note: The stirrer starts automatically during pump calibration and titration, it cannot be stopped
by pressing STIR key.

12
FUNCTIONAL DESCrIPTION
Display Indicators
During the instrument’s operation information is displayed on the LCD.
1
2
3
4
5
6
7
8
1. Current time and instrument mode information (pH meter or Titrator)
2. pH electrode condition
3. Instrument status
4. Virtual option keys
5. Stirrer and reading status
6. Main reading information
7. pH temperature compensation mode (Manual or Automatic)
8. Temperature reading
Displayed icons:
Stirrer running (blinks when stirrer is not working properly.)
Pump running
Unstable reading
Parameter can be modified
Dosing Pump
The dosing pump is based on a valve that automatically moves the titrant between the titrant
bottle and syringe when filling the syringe and between the syringe and sample when dispensing.
A replaceable 5 mL plastic syringe is used to limit the amount of titrant used per test to ensure the
highest possible accuracy. Before a set of titrations, it is necessary to prime the dosing system.
Note: Once titrations have been completed, the dosing system should be cleaned with deionized
water using the prime feature.

13
TITrATOr STArTUP
6. TITRATOR STARTUP
This is a general outline of the steps required to perform a titration. The following topics are expanded
upon each section that follows.
• Place the instrument on a flat table. Do not place the instrument in direct sun light.
• Connect the power adapter to the instrument.
• Turn the instrument on using the power switch from the rear panel of the instrument.
• Set up the instrument. See the SETUP MENU section for details.
• Connect the pH electrode to the instrument.
• Connect the temperature sensor to the instrument.
• Calibrate the pH electrode.
• Connect the tubes and the valve. See DOSING PUMP INSTALLATION section for the procedure.
• Remove the titrant bottle cap and replace it with the bottle cap with tubes. Place the titrant bottle
in the appropriate place on the titrator top.
Note: Different titrants are required based on the concentration. See PUMP CALIBRATION
PROCEDURE for details.
• Prime the syringe. To assure high accuracy, verify there are no air bubbles in the syringe or tubing.
• Calibrate the pump.
Note: Different volumes of standard are required based on the concentration. See PUMP
CALIBRATION PROCEDURE for details.
• Prepare the sample.
• Run a titration and log sample results.

14
SETUP mENU
7. SETUP MENU
The titrator’s setup menu may be accessed from the main screen or titration screens (meter or titrator)
by pressing the MENU key, then Setup.
A list of setup parameters will be displayed with currently configured setting.
While in the setup menu, it is possible to modify the instrument’s operation parameters. The ARROW
keys permit the user to scroll the setup parameters.
Press HELP to view the contextual help.
Press ESC to return to the main screen.
Concentration Unit
mg/L or meq/L.
Press the corresponding virtual option key to change the option.
Measurement Range
Low or High
Use the table below to determine the appropriate range.
Press the corresponding virtual option key to select the new option.
Note: Different titrant solutions are required for each range.
Acidity Type
Strong or Total
Use the table below to determine the appropriate range. Press the corresponding virtual option key
to change the option.

15
SETUP mENU
Measurement Range Low High
Range mg/L 15 - 400 300 - 4000
meq/L 0.3 - 8.0 6.0 - 80.0
Acidity Type Total Strong Total Strong
pH Endpoint 8.3 pH 3.7 pH 8.3 pH 3.7 pH
Minimum sample pH < 8.3 pH < 3.7 pH < 8.3 pH < 3.7 pH
Calibration Timeout
Disabled or 1 to 7 days
This option is used to set the number of days before the pH calibration expired warning message is
displayed.
Press Modify to access the calibration timeout screen.
Use the ARROW keys to select the value.
Press Select to confirm or ESC to return to the setup menu without saving the changes.
pH Resolution
0.1 or 0.01
Press the displayed virtual option key to change the option.
Temperature Unit
°C, °F or K
Press the virtual option key to change the option.

16
SETUP mENU
Time
Press the Modify key to change the time format.
Press Format to switch between 12 hour (am/pm) and 24 hour mode.
Press to highlight the value to be modified. Use the ARROW keys to change the value. Press
Accept to confirm the new value or ESC to return to the setup.
Date
Press the Modify key to change the date format.
Press Format to cycle between the available date formats.
Press to highlight the value to be modified. Use the ARROW keys to change the value. Press
Accept to confirm the new value or ESC to return to the setup.
Key Beep
Select Enable to activate or Disable to deactivate the Key Beep function.
If enabled, a short beep will be heard every time a key is pressed.
Error Beep
Select Enable to activate or Disable to deactivate the Error Beep function.
If enabled, a beep will be heard when an error condition occurs.

17
SETUP mENU
Decimal Separator
Select the symbol used for a decimal separator.
LCD Contrast
Press Modify to change the display’s contrast.
The default value is 8.
Use the ARROW keys or / to increase or decrease the value.
Press Accept to confirm the value or ESC to return to the setup menu.
LCD Backlight
Press Modify to change the backlight level.
The default value is 3.
Use the ARROW keys or / to increase or decrease the backlight level.
Press Accept to confirm or ESC to return to the setup menu.
Language
The only available language is English.

18
SETUP mENU
Tutorial
Enable or Disable the Tutorial. This helpful tool offers additional information during calibration and
titration.
Meter Information
Press Select to view the firmware version, language version, mV factory calibration date and time,
temperature factory calibration date and time, and method version.
Press ESC to return to the Setup mode.
Restore Factory Settings
Press Select to restore factory settings.
Press Yes to confirm the restore process or No to return without restoring.
Press ESC to return to the Setup mode.

19
GUIDE TO DISPLAy CODES
8. GUIDE TO DISPLAY CODES
This screen appears when the instrument is turned on during
the initialization process.
Titration screen display.
Titration screen when a titration is in progress.
Prime burette screen.
Prime burette screen when the dosing system is running.
This error message appears when the pump is not working
properly. Check the tubing, valve and syringe. Press Restart
to try again.
This screen appears when the titrator is in calibration mode.
Press Pump to calibrate Pump.
Press Electrode to calibrate pH electrode.

20
GUIDE TO DISPLAy CODES
8.1. PUMP CALIBRATION MESSAGES
Pump calibration is initiated by pressing the Start key.
This screen appears while pump calibration is in progress.
Press ESC or Stop key to return to the Pump Calibration
screen.
This error message is displayed during pump calibration
when the endpoint can not be reached and the maximum
amount of titrant is exceeded. Check standard, electrode
and/or dosing system and try again.
The calibration was outside the acceptable limits. Prepare a
new standard and try again.
This error message appears when the pH reading exceeds the
acceptable input limits (-2.00 < pH < 16.00).
This screen appears when the stirrer is not working properly.
Check the stir bar and beaker content. Press Restart to try
again.
This error message appears when the pump is not working
properly. Check the tubing, valve and syringe. Press Restart
to try again.