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