Hanna Instruments HI 93710 User Manual

Instruction Manual

MULTIPARAMETER

ION SPECIFIC METERS

Manufacturers since 1978

These Instruments are in

Compliance with the CE Directives

Dear Customer, Thank you for choosing a Hanna product. Please read this instruction

manual carefully before using the meter. This manual will provide you with the necessary information for the correct use of the instrument. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst.com. These instruments are in compliance with directives EN 50081-1 and EN 50082-1.

TABLE OF CONTENTSTABLE OF CONTENTS

TABLE OF CONTENTS

TABLE OF CONTENTSTABLE OF CONTENTS

PRELIMINARY EXAMINATION ................................................................................. 3

GENERAL DESCRIPTION .........................................................................................3

PRINCIPLE OF OPERATION ..................................................................................... 3

DISPLAY CODE GUIDE ............................................................................................5

TIPS FOR AN ACCURATE MEASUREMENT ............................................................... 6

COMMON SPECIFICATIONS ................................................................................... 6

HI 93710 - pH/CHLORINE ..................................................................................... 7

HI 93724 - CYANURIC ACID/pH ............................................................................. 9

HI 93725 - pH/TOTAL HARDNESS ........................................................................ 11

HI 93741 - TOTAL HARDNESS/IRON LOW RANGE..................................................13

HI 93742 - IRON LOW RANGE/MANGANESE LOW RANGE ...................................... 15

HI 93743 - IRON LOW RANGE/pH........................................................................19

HI 93744 - pH/TOTAL HARDNESS/IRON LOW RANGE ............................................ 21

HI 93745 - pH/FREE & TOTAL CHLORINE

TOTAL HARDNESS/IRON LOW RANGE...............................................23

C 101 - pH/FREE & TOTAL CHLORINE/CYS/IODINE/BROMINE

IRON LOW RANGE ......................................................................... 26

C 104 - pH/FREE & TOTAL CHLORINE/CYS ........................................................... 29

BROMINE MEASUREMENT...................................................................................32

FREE CHLORINE MEASUREMENT ......................................................................... 34

TOTAL CHLORINE MEASUREMENT ........................................................................ 36

CYANURIC ACID MEASUREMENT .......................................................................... 38

HARDNESS MEASUREMENT.................................................................................39

IODINE MEASUREMENT ....................................................................................... 42

IRON LOW RANGE MEASUREMENT ...................................................................... 44

pH MEASUREMENT .............................................................................................46

BATTERY REPLACEMENT ....................................................................................... 47

ACCESSORIES ..................................................................................................... 48

WARRANTY .........................................................................................................49

OTHER ISM FROM HANNA ................................................................................... 50

CE DECLARATION OF CONFORMITY ...................................................................... 51

PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION

PRELIMINARY EXAMINATION

PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION

Remove the instrument from the packing material and examine it carefully to make sure that no damage has occurred during shipment. If there is any damage, notify your Dealer.

Each Ion Specific Meter is supplied complete with:

• 9V Battery

• Two Sample Cuvets and Caps*

• One Transport Cap

Note: Save all packing material until you are sure that the instru-

ment functions correctly. Any defective item must be returned in its original packing with the supplied accessories.

* HI 93725 is supplied with 3 cuvets and caps

GENERAL DESCRIPTIONGENERAL DESCRIPTION

GENERAL DESCRIPTION

GENERAL DESCRIPTIONGENERAL DESCRIPTION

The Hanna Instruments Ion Specific Meters are portable, microprocessor-based colorimeters that measure the ion content in water and waste waters. The meters use an exclusive positive-locking system to ensure that the cuvet is in the same place every time it is placed into the measurement cell.

The reagents are in liquid or powder form and are supplied in bottles or in packets. The amount of reagent is precisely dosed to ensure maximum repeatability.

Display codes aid the user in routine operations. The meters have an auto-shut off feature that will turn the meter off

after 10 minutes of non-use.

PRINCIPLE OF OPERATIONPRINCIPLE OF OPERATION

PRINCIPLE OF OPERATION

PRINCIPLE OF OPERATIONPRINCIPLE OF OPERATION

The color of every object we see is determined by a process of absorption and emission of the electromagnetic radiation (light) of its molecules.

Colorimetric analysis is based on the principle that specific compounds react with others and form a color, the intensity of which is proportional to the concentration of the substance to be measured.

When a substance is exposed to a beam of light of intensity Io, a portion of the radiation is absorbed by the substance's molecules and a radiation of intensity I, lower than Io, is emitted.

The quantity of radiation absorbed is given by the Lambert-Beer Law:

log Io/I = ελ c d

Where log Io/I = Absorbance (A)

ελ= molar extinction coefficient of the substance at

wavelength λ c = molar concentration of the substance d = optical distance light travels through sample

Therefore, the concentration "c" can be calculated from the color intensity of the substance determined by the emitted radiation I, as the other factors are known.

LED

EMITTED LIGHT

CUVET MICROPROCESSOR

BLOCK DIAGRAM OF A COLORIMETER

LIGHT

DETECTOR

A monochromatic LED (Light Emitting Diode) emits radiation at a single wavelength, supplying the system with the intensity Io.

Since a substance absorbs the color complimentary to the one it emits (for example, a substance appears yellow because it absorbs blue light), Hanna colorimeters use LEDs that emit the appropriate wavelength to measure the sample.

The optical distance (d) is measured by the diameter of the cuvet containing the sample.

The photoelectric cell collects the radiation I that is not absorbed by the sample and converts it into an electric current, producing a potential in the mV range.

The microprocessor uses this potential to convert the incoming value into the desired measuring unit and to display it on the LCD.

The measurement process is done in two phases: setting the meter to zero and the actual measurement.

The cuvet has a very important role because it is an optical element, and thus requires particular attention.

It is important that both the measurement and the calibration (zeroing) cuvets are optically identical to provide the same measurement conditions. Whenever possible use the same cuvet for both.

It is also necessary that the cuvet's surface is clean and not scratched, in order to avoid measurement interference due to unwanted reflection and absorption of light.

It is recommended not to touch the cuvet walls with hands. Furthermore, in order to maintain the same conditions during the

zeroing and the measuring phases, it is necessary to close the cuvet to prevent any contamination.

DISPLAY CODE GUIDEDISPLAY CODE GUIDE

DISPLAY CODE GUIDE

DISPLAY CODE GUIDEDISPLAY CODE GUIDE

This indicates that the meter is in a ready state

and zeroing can be performed.

Sampling in Progress. This prompt appears each

time the meter is performing a measurement.

This indicates that the meter is in a zeroed state

and measurement can be performed.

A zero reading was not taken. Insert a sample

before adding reagent and press ZERO.

Under range. A blinking "0.00" indicates that the

sample absorbs less light than the zero reference.

Check the procedure and make sure you use the

same cuvet for reference (zero) and measurement.

Over range. A flashing value higher than the

maximum concentration readable (see specifica-

tions) indicates that the sample absorbs too much

light, meaning that the concentration is too high.

Dilute the sample.

Light over range. The cuvet is not inserted correctly

and an excess ambient light is reaching the

detector. If the cover is properly installed, then

contact your dealer or the nearest Hanna Customer

Service Center.

Light under range. The zero sample is too dark for

proper zeroing. If this is not the case, contact your

dealer or the nearest Hanna Customer Service

Center.

The "V" indicates that the battery voltage is

getting low and the battery needs to be replaced.

This indicates that the battery is dead and must

be replaced.

Note: once this indication is displayed, the meter

will lockup. Change the battery to restart.

TIPS FOR AN ACCURATE MEASUREMENTTIPS FOR AN ACCURATE MEASUREMENT

TIPS FOR AN ACCURATE MEASUREMENT

TIPS FOR AN ACCURATE MEASUREMENTTIPS FOR AN ACCURATE MEASUREMENT

The instruction listed below should be carefully followed during testing to ensure best accuracy.

• Do not let the test sample stand too long after reagent is added or accuracy will be lost.

• Whenever the cuvet is placed into the measurement cell, it must be completely free of fingerprints, oil or dirt. Wipe it thoroughly with HI 731318 or a lint-free cloth prior to insertion.

• It is important that the sample does not contain any debris. This would corrupt the readings.

• Each time the cuvet is used, the cap must be tightened to the same degree.

• It is possible to take multiple readings in a row, but it is recommended that a zero reading be taken for each sample and that the same cuvet is used for zeroing and measurement.

• It is important to discard the sample immediately after the reading is taken because the glass might become permanently stained.

• Shaking the cuvet can generate bubbles in the sample, causing higher readings. To obtain accurate measurements, remove such bubbles by swirling or by gently tapping the vial.

• All the reaction times reported in this manual are referred to 20°C (68°F). As a general rule of thumb, they should be doubled at 10°C (50°F) and halved at 30°C (86°F).

COMMON SPECIFICATIONSCOMMON SPECIFICATIONS

COMMON SPECIFICATIONS

COMMON SPECIFICATIONSCOMMON SPECIFICATIONS

All the ion specific meters in this manual have the following common features:

Light Life Life of the instrument Light Detector Silicon Photocell Environment 0 to 50°C (32 to 122°F);

max 95% RH non-condensing

Battery Type/Life 1 x 9 volt/40 hours Auto-Shut off After 10' of non-use Dimensions 180 x 83 x 46 mm (7.1 x 3.3 x 1.8") Weight 290 g (10 oz.)

HI 93710 - pH & ChlorineHI 93710 - pH & Chlorine

HI 93710 - pH & Chlorine

HI 93710 - pH & ChlorineHI 93710 - pH & Chlorine

The HI 93710 meter measures both pH and chlorine (Cl2, free and total) content in water and wastewater in the following ranges: pH 5.9 to 8.5 pH units Free Chlorine 0.00 to 2.50 mg/L (ppm) Total Chlorine 0.00 to 3.50 mg/L (ppm).

SPECIFICATIONS

Range pH 5.9 to 8.5

Free Cl20.00 to 2.50 mg/L Total Cl20.00 to 3.50 mg/L Resolution 0.1 pH/0.01 mg/L Cl

Accuracy ±0.1 pH

±0.03 mg/L ±3% of Cl2 reading

Typical EMC ±0.2 pH Deviation ±0.02 mg/L Cl

Light Source Light Emitting Diode @ 555 nm Method Adaptation of the EPA recommended DPD method

330.5 for chlorine analysis. The reaction with reagents causes a pink tint in the sample.

For pH, Phenol red method. The reaction with reagents causes a red tint in the sample.

REQUIRED REAGENTS

Code Unit Description Quantity HI 93710-0 p H Phenol red 5 drops HI 93701-0 Free Cl

DPD 1 packet

HI 93710

pH/Chlorine

HI 93711-0 Total Cl

DPD 1 packet

Liquid version (chlorine): Code Unit Description Quantity

HI 93701A-F Free Cl HI 93701B-F Free Cl HI 93701A-T Total Cl HI 93701B-T Total Cl HI 93701-C Total Cl

2 2 2 2

DPD1 indicator 3 drops DPD1 buffer 3 drops DPD1 indicator 3 drops DPD1 buffer 3 drops DPD3 solution 1 drop

REAGENT SETS

HI 93701-01 Reagents for 100 free chlorine tests HI 93701-03 Reagents for 300 free chlorine tests HI 93710-01 Reagents for 100 pH tests HI 93710-03 Reagents for 300 pH tests HI 93711-01 Reagents for 100 total chlorine tests HI 93711-03 Reagents for 300 total chlorine tests HI 93701-F Reagents for 300 free chlorine tests (liquid version) HI 93701-T Reagents for 300 total chlorine tests (liquid version)

For other accessories see page 48.

MEASUREMENT PROCEDURE

• Turn the meter on by pressing ON/OFF.

• The meter will automatically default to pH measurement mode.

• When the LCD displays “- - -”, it is ready.

OFF

pH MEASUREMENTS

In order to perform pH measurements, follow the procedure on page 46.

CHLORINE MEASUREMENTS

• Press the pH/CL range key to select the chlorine scale. “C” will appear on the LCD.

• Follow the procedures on page 34 and 36.

Note: Free and total chlorine have to be measured separately

following the indicated procedure with fresh unreacted samples if both values are requested.

HI 93710 pH/Chlorine

HI 93724 - Cyanuric Acid & pHHI 93724 - Cyanuric Acid & pH

HI 93724 - Cyanuric Acid & pH

HI 93724 - Cyanuric Acid & pHHI 93724 - Cyanuric Acid & pH

The HI 93724 meter measures cyanuric acid and pH content in water and wastewater in the following ranges: 0 to 80 mg/L for Cyanuric Acid (CYS) and 5.9 to 8.5 for pH.

SPECIFICATIONS

Range CYS 0 to 80 mg/L

pH 5.9 to 8.5

Resolution CYS 1 mg/L

pH 0.1

Accuracy CYS ±1 mg/L ±15% of reading

pH ±0.1

Typical EMC CYS ±1 mg/L Deviation pH ±0.1

Light Source Light Emitting Diode @ 555 nm Method For pH, Phenol Red method. The reaction with

reagent causes a red tint in the sample. For cyanuric acid, adaptation of the turbidimet-

ric method. The reaction between cyanuric acid and the reagent causes a white suspension in the sample.

REQUIRED REAGENTS

Code Unit Description Quantity HI 93710-0 p H Phenol red 5 drops HI 93722-0 CYS Powder Reagent 1 packet

HI 93724

Cyanuric A. & pH

REAGENT SETS

HI 93710-01 Reagents for 100 pH tests HI 93710-03 Reagents for 300 pH tests HI 93722-01 Reagents for 100 CYS tests HI 93722-03 Reagents for 300 CYS tests

For other accessories see page 48.

MEASUREMENT PROCEDURE

• Turn the meter on by pressing ON/OFF.

OFF

• The meter will automatically default to pH measurement mode.

• When the LCD displays “- - -”, it is ready.

pH MEASUREMENTS

In order to perform pH measurements, follow the procedure on page 46.

CYANURIC ACID MEASUREMENTS

• Press the pH/CYS key to select the cyanuric acid scale. “pH” will disappear from the LCD.

• Follow the procedure on page 38.

HI 93724 Cyanuric A. & pH

HI 93725 - pH & Total HardnessHI 93725 - pH & Total Hardness

HI 93725 - pH & Total Hardness

HI 93725 - pH & Total HardnessHI 93725 - pH & Total Hardness

The HI 93725 meter measures pH and Magnesium/Calcium and Total Hardness content in water and wastewater.

SPECIFICATIONS

Range pH 5.9 to 8.5

Mg Hardness 0.00 to 2.00 mg/L

Ca Hardness 0.00 to 2.70 mg/L

Total Hardness 0.00 to 4.70 mg/L

Resolution pH 0.1

Hardness 0.01 mg/L

Accuracy pH ±0.1

Hardness ±0.11 mg/L ±5% of reading)

Typical EMC pH ±0.1 Deviation Hardness ±0.02 mg/L

Light Source Light Emitting Diode @ 555 nm Method For pH, Phenol red method. The reaction with

reagent causes a red tint in the sample. For total hardness, adaptation of the Standard

Methods for the Examination of Water and Wastewater, 18

ric method. The reaction between hardness and reagents causes a maroon tint in the sample.

edition, Calmagite/colorimet-

HI 93725

pH & Total Hardness

REQUIRED REAGENTS

Code Description Quantity HI 93710-0 pH Phenol red 5 drops HI 93719A-0 Ca & Mg indicator 0.5 mL HI 93719B-0 Alkali solution 0.5 mL HI 93719C-0 EDTA solution 1 drop HI 93719D-0 EGTA solution 1 drop

REAGENT SETS

HI 93710-01 Reagents for 100 pH tests HI 93710-03 Reagents for 300 pH tests HI 93719-01 Reagents for 100 hardness tests HI 93719-03 Reagents for 300 hardness tests

For other accessories see page 48.

MEASUREMENT PROCEDURE

• Turn the meter on by pressing ON/OFF.

OFF

• The meter will automatically default to pH measurement mode.

• When the LCD displays “- - -”, it is ready.

pH MEASUREMENTS

In order to perform pH measurements, follow the procedure on page 46.

HARDNESS MEASUREMENTS

• Press pH/HARDNESS to select the Hardness range (the LCD displays "ZER1").

• Follow the procedure on page 39.

HI 93725 pH & Total Hardness

HI 93741HI 93741

HI 93741

HI 93741HI 93741

Total Hardness & Iron Low RangeTotal Hardness & Iron Low Range

Total Hardness & Iron Low Range

Total Hardness & Iron Low RangeTotal Hardness & Iron Low Range

The HI 93741 meter measures the Iron (Fe) content and the Magnesium (Mg), Calcium (Ca) and Total Hardness in water and wastewater.

SPECIFICATIONS

Range Fe 0 to 400 µg/L

Mg Hardness 0.00 to 2.00 mg/L

Ca Hardness 0.00 to 2.70 mg/L

Total Hardness 0.00 to 4.70 mg/L

Resolution Fe 1 µg/L

Hardness 0.01 mg/L

Accuracy Fe ±10 µg/L ±8% of reading

Hardness ±0.11 mg/L ±5% of reading

Typical EMC Fe ±1 µg/L Deviation Hardness ±0.02 mg/L

Light Source Light Emitting Diode @ 555 nm Method For Iron, Adaptation of the TPTZ Method. The

reaction between iron and the reagent causes a blue tint in the sample. For Hardness, adaptation of the Standard Meth-

ods for the Examination of Water and Wastewater, 18th edition, Calmagite/colorimet-

ric method. The reaction between hardness and reagents causes a maroon tint in the sample.

Total Hardness & Iron LR

HI 93741

REQUIRED REAGENTS

Code Unit Description Quantity HI 93746-0 Iron LR TPTZ Reagent 2 packets HI 93719A-0 Hardness Ca & Mg indicator 0.5 mL HI 93719B-0 Hardness Alkali solution 0.5 mL HI 93719C-0 Hardness EDTA solution 1 drop HI 93719D-0 Hardness EGTA solution 1 drop

REAGENT SETS

HI 93746-01 Reagents for iron LR (100 packets) HI 93746-03 Reagents for iron LR (300 packets) HI 93719-01 Reagents for 100 hardness tests HI 93719-03 Reagents for 300 hardness tests

For other accessories see page 48.

MEASUREMENT PROCEDURE

• Turn the meter on by pressing ON/OFF. The meter will automatically default to the iron measurement mode and F will appear on the right to warn the user.

• When the LCD displays “- - -”, it is ready.

• Refer to the manual pages below to measure the appropriate parameter and for the required reagents:

OFF

IRON LR MEASUREMENT

• See page 44.

HARDNESS MEASUREMENT

• Press SET to select the hardness scale. “ZER1” will appear on the LCD; then see page 39.

HI 93741 Total Hardness & Iron LR

HI 93742 - HI 93742 -

HI 93742 -

HI 93742 - HI 93742 -

Manganese Low RangeManganese Low Range

Manganese Low Range

Manganese Low RangeManganese Low Range

The HI 93742 meter measures the iron and manganese content in water, wastewater and seawater (iron only) in the following ranges:

Iron 0 to 400 µg/L (ppb) Manganese 0 to 300 µg/L (ppb).

Iron Low Range andIron Low Range and

Iron Low Range and

Iron Low Range andIron Low Range and

SPECIFICATIONS

Range Fe 0 to 400 µg/L

Mn 0 to 300 µg/L Resolution 1 µg/L Accuracy Fe ±10 µg/L ±8% of reading

Mn ±2 µg/L ±3% of reading Typical EMC ±1 µg/L

Deviation Light Source Light Emitting Diode @ 555 nm Method Adaptation of the TPTZ method for iron and

PAN method for manganese. The reaction between iron or manganese and the reagents respectively causes a blue or an orange tint in the sample.

REQUIRED REAGENT

Code Description Quantity Iron

HI 93746-0 TPTZ reagent 2 packets

HI 93742

Iron LR/Manganese LR

Manganese HI 93748A-0 Ascorbic acid 2 packets HI 93748B-0 Alkaline-cyanide solution 0.40 mL HI 93748C- 0 0.1% PAN indicator 2 m L HI 93703-51 Dispersing Agent 4-6 drops (only

when necessary, see note)

REAGENT SETS

HI 93746-01 Reagents for 50 iron LR tests HI 93746-03 Reagents for 150 iron LR tests HI 93748-01 Reagents for 50 manganese LR tests HI 93748-03 Reagents for 150 manganese LR tests

For other accessories see page 48.

MEASUREMENT PROCEDURE

• Turn the meter on by pressing ON/OFF.

• When the LCD displays "- - -", it is ready.

IRON MEASUREMENTS

• Select the iron parameter by pressing the Fe/

Mn key until "F" appears on the display.

• Follow the procedure on page 44.

Fe Mn

MANGANESE MEASUREMENTS

• Select the manganese param-

eter by pressing the Fe/Mn key until "n" appears on the display.

• Fill one cuvet up to the mark with 10 mL of

deionized water.

• Fill a second cuvet up to the mark with 10 mL

of sample.

OFF

10 mL

HI 93742 Iron LR/Manganese LR

+ 36 hidden pages