Hanna Instruments HI96747C User manual

INSTRUCTION MANUAL

HI96747C

Copper Low Range ISM

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 the instrument.

This manual will provide you with the necessary information for correct use of

the 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,

TABLE OF CONTENTS

PRELIMINARY EXAMINATION ............................................................................................

GENERAL DESCRIPTION ....................................................................................................

ABBREVIATIONS ..............................................................................................................

SPECIFICATIONS ..............................................................................................................

PRECISION AND ACCURACY ..............................................................................................

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

FUNCTIONAL DESCRIPTION ...............................................................................................

ERRORS AND WARNINGS .................................................................................................

GENERAL TIPS FOR AN ACCURATE MEASUREMENT .............................................................

STARTUP ........................................................................................................................

MEASUREMENT PROCEDURE ............................................................................................

VALIDATION PROCEDURE .................................................................................................

CALIBRATION PROCEDURE ...............................................................................................

GLP ................................................................................................................................

BATTERY MANAGEMENT ...................................................................................................

BATTERY REPLACEMENT ...................................................................................................

ACCESSORIES ..................................................................................................................

Please examine this product carefully. Make sure that the instrument is not damaged. If any damage

occurred during shipment, please contact your local Hanna Instruments Office.

Each HI96747 Ion Selective Meter is supplied complete with:

• Sample Cuvettes and Caps (2 pcs.)

• CAL Check™ standard cuvettes

• 9V Battery

• Scissors

• Cloth for wiping cuvettes

• Instrument quality certificate

• Instruction Manual and Quick Reference Guide

• Rigid carrying case

Note: Save all packing material until you are sure that the instrument works correctly. Any

defective item must be returned in its original packing.

PRELIMINARY EXAMINATION

The HI96747 is an auto diagnostic portable microprocessor meter that benefits from

Hanna Instruments’ years of experience as a manufacturer of analytical instruments. It has an

advanced optical system based on a special tungsten lamp and a narrow band interference filter

that allows most accurate and repeatable readings. All instruments are factory calibrated and the

electronic and optical design minimizes the need of frequent calibration.

With the powerful CAL CheckTM validation function, you are able to validate good performance

of your instrument at any time. The validation procedure is extremely user friendly. Just use the

exclusive Hanna Instruments ready‑made, NIST traceable standards to verify the performance of

the instrument and recalibrate if necessary.

All instruments are splash proof and the lamp and filter units are protected from dust or dirt by

a transparent cup. This makes the instruments fulfill field applications. Display messages aid the

user in routine operation. The meter has an auto shut off feature that will turn off the instrument

after 10 minutes of non use in measurement mode or after 1 hour if left in calibration mode.

The meter uses an exclusive positive‑locking system to ensure that the cuvette is in the same

position every time it is placed into the measurement cell. It is designed to fit a cuvette with a

larger neck making it easier to add both sample and reagents. The cuvette is made from special

optical glass to obtain best results.

The HI96747 meter measures the free dissolved Copper (Cu) content in water samples in the 0.000

to 1.500 mg/L (ppm) range. The method is an adaptation of the USEPA approved bicinchoninate

method.

The reagent is in powder form and is supplied in packets. The amount of reagent is precisely dosed

to ensure the maximum repeatability.

GENERAL DESCRIPTION

degree Celsius

United States Environmental Protection Agency

degree Fahrenheit

milligrams per liter. mg/L is equivalent to ppm (parts per million)

milliliter

millivolt

°C:

USEPA:

°F:

mg/L:

mL:

mV:

ABBREVIATIONS

SPECIFICATIONS

Range 0.000 to 1.500 mg/L

Resolution 0.001 mg/L for measurement

0.01 mg/L for calibration and validation

Accuracy

@25 °C (77 °F) ±0.010 mg/L ±5% of reading

Light Source Tungsten lamp

Light Detector Silicon Photocell with narrow band interference filter @560 nm

Method

Adaptation of the USEPA approved bicinchoninate method. The reaction

between Copper and the bicinchoninate reagent causes a purple tint in

the sample.

Environment 0 to 50 °C (32 to 122 °F); max 95% RH non‑condensing

Battery Type 9V (1 pc.)

Auto‑Shut off

After 10’ of non‑use in measurement mode;

after 1 hour of non‑use in calibration mode;

with last reading reminder

Dimensions 192 x 104 x 69 mm (7.6 x 4.1 x 2.7”)

Weight 320 g (11.3 oz.).

REQUIRED REAGENTS

Code Description Quantity/test

HI95747‑0 Copper Low Range Reagent 1 packet

Precision is how closely repeated measurements

agree with each other. Precision is usually

expressed as standard deviation (SD).

Accuracy is defined as the nearness of a test

result to the true value.

Although good precision suggests good accuracy,

precise results can be inaccurate. The figure

explains these definitions.

In a laboratory using a standard solution of

0.750 mg/L Copper and a representative lot

of reagent, an operator obtained with a single

instrument a standard deviation of 0.015 mg/L.

Absorption of Light is a typical phenomenon of interaction between electromagnetic radiation and

matter. When a light beam crosses a substance, some of the radiation may be absorbed by atoms,

molecules or crystal lattices.

If pure absorption occurs, the fraction of light absorbed depends both on the optical path length

through the matter and on the physical‑chemical characteristics of the substance according to the

Lambert‑Beer Law:

‑log I/Io= ελc d

A = ελc d

Where:

‑log I/Io = Absorbance (A)

Io = intensity of incident light beam

I = intensity of light beam after absorption

ε

λ= molar extinction coefficient at wavelength λ

c = molar concentration of the substance

d = optical path through the substance

Therefore, the concentration “c” can be calculated from the absorbance of the substance as the

other factors are known.

Photometric chemical analysis is based on the possibility to develop an absorbing compound from a

specific chemical reaction between sample and reagents. Given that the absorption of a compound

strictly depends on the wavelength of the incident light beam, a narrow spectral bandwidth should

be selected as well as a proper central wavelength to optimize measurements.

PRINCIPLE OF OPERATION

PRECISION AND ACCURACY

A microprocessor controlled special tungsten lamp emits radiation which is first optically conditioned

and beamed to the sample contained in the cuvette. The optical path is fixed by the diameter of

the cuvette. Then the light is spectrally filtered to a narrow spectral bandwidth, to obtain a light

beam of intensity Ioor I.

The photoelectric cell collects the radiation Ithat 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 carried out in two phases: first the meter is zeroed and then the actual

measurement is performed.

The cuvette 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) cuvettes, are

optically identical to provide the same measurement conditions. Whenever possible use the same

cuvette for both. It is necessary that the surface of the cuvette is clean and not scratched. This to avoid

measurement interference due to unwanted reflection and absorption of light. It is recommended

not to touch the cuvette walls with hands.

Furthermore, in order to maintain the same conditions during the zeroing and the measuring phases,

it is necessary to close the cuvette to prevent any contamination.

PRINCIPLE OF OPERATION

The optical system of Hanna Instruments’ HI96 series colorimeters is based on a special subminiature

tungsten lamp and narrow‑band interference filters to guarantee both high performance and

reliable results.

HI96 series block diagram (optical layout)

INSTRUMENT DESCRIPTION

1) GLP/ key

2) CAL CHECK key

3) ZERO/CFM key

4) READ /TIMER key

5) ON/OFF key

6) Liquid Crystal Display (LCD)

7) Cuvette alignment indicator

8) Cuvette holder

FUNCTIONAL DESCRIPTION

OPERATING MODES

• Measurement mode: default operation mode, enables both validation and measurement.

• Calibration mode: may be entered by keeping CAL CHECK pressed for three seconds (the

“CAL” tag appears), it enables calibration of the instrument.

• GLP mode: may be entered by pressing GLP/ (“GLP” appears), it enables consulting of

user calibration date or restore factory calibration.

KEYPAD DESCRIPTION

• ON/OFF: to turn the meter on and off.

• ZERO/CFM: to zero the meter prior to measurement, to confirm edited values or to confirm

factory calibration restore.

• READ /TIMER: this is a multi‑functional key. In measurement mode, press to make a

measurement, or press and hold for three seconds to start a pre‑programmed countdown prior

to measurement. In GLP mode press to view the next screen.

• CAL CHECK: this is a bi‑functional key. Just press to perform the validation of the meter, or

press and hold for three seconds to enter calibration mode.

• GLP/ : this is a bi‑functional key. Just press to enter GLP mode. In calibration mode press

to edit the date and time.

DISPLAY ELEMENTS DESCRIPTION

1) The measuring scheme (lamp, cuvette, detector), appears during different phases of zero or

reading measurement

2) Error messages and warnings

3) The battery icon shows the charging level of the battery

4) The hourglass appears when an internal checking is in progress

5) Status messages

6) The chronometer appears when the reaction timer is running

7) The month, day and date icons appear when a date is displayed

8) Four digit main display

9) Measuring units

10) Four digit secondary display

FUNCTIONAL DESCRIPTION

The instrument shows clear messages when erroneous condition appears. Messages are also displayed

when the obtained values are outside expected range. The beeper is playing a beep on errors.

Light High: There is too much light to perform a measurement.

Please check the preparation of the zero cuvette.

a) on zero reading

ERRORS AND WARNINGS

Light Low: There is not enough light to perform a measurement.

Please check the preparation of the zero cuvette.

Table of contents

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