Hanna Instruments HI 9210N Manual de usuario

Instruction Manual

HI 9210N

Portable Waterproof

pH Meter

www.hannainst.com

Dear Customer,

Thank you for choosing a Hanna Product.

Please read this instruction manual carefully before using the instrument.

If you require further technical information, do not hesitate to e-mail us at

[email protected].

This instrument is in compliance with the directives.

All Hanna Instruments meters are guaranteed for two years against defects in work-

manship and materials when used for their intended purpose and maintained according

to instructions. Electrodes and probes are guaranteed for a period of six months.

This warranty is limited to repair or replacement free of charge.

Damage due to accident, misuse, tampering or lack of prescribed maintenance are not

covered. If service is required, contact the dealer from whom you purchased the instru-

ment. If under warranty, report the model number, date of purchase, serial number and

the nature of the failure. If the repair is not covered by the warranty, you will be notified of

the charges incurred. If the instrument is to be returned to Hanna Instruments, first obtain a

Returned Goods Authorization number from the Customer Service department and then

send it with shipping costs prepaid. When shipping any instrument, make sure it is

properly packaged for complete protection.

WARRANTY

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

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

FUNCTIONAL DESCRIPTION ................................................................. 4

SPECIFICATIONS.................................................................................. 5

OPERATIONAL GUIDE .......................................................................... 5

CALIBRATION...................................................................................... 6

pH VALUES AT VARIOUS TEMPERATURES ............................................ 8

ELECTRODE MAINTENANCE ................................................................... 9

BATTERY REPLACEMENT ..................................................................... 10

ACCESSORIES .................................................................................... 11

TABLE OF CONTENTS

The HI 9210N heavy-duty pH meter is designed to provide laboratory results

and accuracy under the harshest of industrial conditions.

The supplied HI 1217D rugged pH electrode, incorporates a temperature

sensor to provide both pH and temperature measurements with one probe.

The electrode signal is also preamplified and strengthened to give you

better protection against noise and electromagnetic interference, a common

phenomenon in industrial applications.

Calibration is manual to assure that the unit can be calibrated at any pH

buffer value. The trimmers for calibration are placed behind a protective

cover, that also keeps the meter watertight and prevents the calibration

from being tampered with.

A low voltage indicator appears on the screen to alert the user that there is only

a few hours of battery life left. Afterwards, the BEPS (Battery Error Prevention

System) will stop any false readings by shutting the meter off.

Remove the instrument from the packing material and examine it carefully

to make sure that no damage has occurred during shipping. If there is any

noticeable damage, notify your Dealer immediately.

The instrument is supplied complete with:

• HI 1217D pH electrode with built-in temperature sensor,

DIN connector and 1 m (3.3’) cable

• Batteries, 4 x 1.5V AA

• Instruction manual

Note: Save all packing materials until you are sure that the instrument is

functioning correctly. Any damaged or defective item must be

returned in its original packing materials together with the supplied

accessories.

PRELIMINARY EXAMINATION

GENERAL DESCRIPTION

All rights are reserved. Reproduction in whole or in part is prohibited without the

written consent of the copyright owner.

Hanna Instruments reserves the right to modify the design, construction and

appearance of its products without advance notice.

1) Battery cover

2) DIN connector for electrode

3) Offset calibration trimmer

4) Slope calibration trimmer

5) Temperature calibration trimmer

6) Mode indicator

7) Liquid Crystal Display

8) ON/OFF key, to turn the meter on or off

9) RANGE key, to visualize the temperature

HI 9210N

ATC

pH METER

ON/OFF

RANGE

pH:

°C: 0.00 - 14.00

0.0 -70.0

FUNCTIONAL DESCRIPTION SPECIFICATIONS

Range 0.00 to 14.00 pH / 0.0 to 70.0°C

Resolution 0.01 pH / 0.1°C

Accuracy (@20°C/68°F) ±0.02 pH / ±0.5°C

pH Calibration Manual, 2 point, through offset & slope trimmers

Offset: ±1 pH / Slope: 85 to 105%

Temperature Compensation Automatic, 0 to 70°C

Electrode HI 1217D, with built-in temperature sensor and amplifier,

DIN connector and 1 m (3.3’) cable (included)

Battery Type 4 x 1.5V AA

Battery Life Approx. 2000 hours of continuous use

Environment 0 to 50°C (32 to 122°F); RH max 100%

Dimensions 196 x 80 x 60 mm (7.7x3.1x2.4’’)

Weight 500 g (1.1 lb.)

• The meter is supplied complete with batteries. Remove the back cover

and install the batteries, while paying attention to their polarity.

• For better accuracy, make sure that the instrument is calibrated (see

“Calibration” section for details).

• Connect the HI 1217D electrode to the DIN connector on the top of the

instrument and press the ON/OFF key.

• To take a pH measurement, remove the electrode protective cap and

simply submerge the tip (4cm/1½") of the electrode into the sample.

• If necessary, press the RANGE key until the display changes to the pH

mode, and allow for the electrode to adjust and stabilize.

• Since the pH electrode also features a built-in temperature sensor, pH

measurements are automatically adjusted for the temperature effect.

• To take temperature measurements, press the RANGE key to enter

temperature mode, dip the supplied electrode (with built-in temperature

sensor) in the sample and allow for the reading to stabilize.

• After use, switch the instrument off, rinse the electrode with clean water

and store it with a few drops of storage (HI 70300) or pH 7 buffer

solution in the protective cap.

OPERATIONAL GUIDE

For best accuracy, it is recommended to calibrate the instrument frequently.

In addition a pH calibration should be performed:

a) Whenever the pH electrode or the batteries are replaced

b) At least once a month

c) After testing aggressive chemicals

d) When extreme accuracy is required

PREPARATION

Pour small quantities of pH 7.01 and pH 4.01 (or pH 10.01) solution into

two clean beakers. For an accurate calibration, use two beakers for each

buffer solution, the first one for rinsing the electrode and the second one for

calibration.

For accurate readings, use pH 7.01 & pH 4.01 buffers if you are going to

measure acidic solutions, or pH 7.01 & pH 10.01 for alkaline samples.

PROCEDURE

• Remove the protective cap from the electrode, rinse it with some pH

7.01 solution, then dip it (at least 4 cm/1½") in pH 7.01 buffer. Stir

briefly and wait for the reading to stabilize.

• To access the calibration trimmers, unscrew the protective cap on the top

of the meter, near the electrode connector.

• Adjust the OFFSET trimmer until the LCD shows the buffer pH value at

the current temperature (see “pH values at various temperatures”

table). Press RANGE to read the buffer temperature.

• Rinse the electrode and dip it into pH 4.01 (or pH 10.01) buffer. Stir

gently and wait for the display to stabilize.

• Adjust the SLOPE trimmer until the LCD displays the buffer pH value at

the measured temperature.

CALIBRATION

Note: The meter also allows the user to calibrate the offset point of the

temperature sensor. For this purpose, immerse the HI 1217D

electrode in a solution together with a high precision reference

thermometer. Then turn the temperature calibration trimmer (#5

at page 4) until the meter displays the temperature of the solution.

• pH calibration is now complete. Replace the trimmer cover and tighten

it to ensure a proper seal against water and humidity ingress.

pH VALUES AT VARIOUS TEMPERATURES

Temperature has an effect on pH. The calibration buffer solutions are

affected by temperature changes to a lesser degree than normal solutions.

For pH calibration, please refer to the following chart.

For instance, if the buffer temperature is 25°C, the display should show pH

4.01, 7.01 or 10.01 at pH 4, 7 or 10 buffers, respectively.

At 20°C, the display should show pH 4.00, 7.03 or 10.06.

The meter reading at 50°C will then be pH 4.06, 6.98 or 9.82.

TEMP pHVALUES

°C °F 4.01 6.86 7.01 9.18 10.01

104

113

122

131

140

149

158

4.01

4.00

4.01

4.02

4.03

4.04

4.05

4.06

4.07

4.09

4.11

4.12

6.98

6.95

6.92

6.90

6.88

6.86

6.85

6.84

6.83

6.84

6.85

7.13

7.10

7.07

7.04

7.03

7.01

7.00

6.99

6.98

6.99

9.46

9.39

9.33

9.27

9.22

9.18

9.14

9.10

9.07

9.04

9.01

8.99

8.97

8.95

8.93

10.32

10.24

10.18

10.12

10.06

10.01

9.96

9.92

9.88

9.85

9.82

9.79

9.77

9.76

9.75

ELECTRODE MAINTENANCE

PREPARATION

Remove the protective cap.

DO NOT BE ALARMED IF ANY SALT DEPOSITS ARE PRESENT. This is normal

with electrodes and they will disappear when rinsed with water.

During transport tiny bubbles of air may form inside the glass bulb affecting

proper functioning of the electrode. These bubbles can be removed by

"shaking down" the electrode as you would do with a glass thermometer.

If the bulb and/or junction is dry, soak the electrode in HI 70300 storage

solution for at least one hour.

MEASUREMENT

Rinse the electrode tip with distilled water. Immerse the tip (at least 4 cm)

in the sample and stir gently for a few seconds.

For a faster response and to avoid cross contamination of the samples, rinse

the electrode tip with a few drops of the solution to be tested, before taking

measurements.

STORAGE

To minimize clogging and assure a quick response time, the glass bulb and

the junction should be kept moist and not allowed to dry out.

Replace the solution in the protective cap with a few drops of HI 70300

storage solution. Follow the Preparation Procedure above before taking

measurements.

Note: NEVER STORE THE ELECTRODE IN DISTILLED OR DEIONIZED WATER.

PERIODIC MAINTENANCE

Inspect the electrode and the cable. The cable used for connection to the

meter must be intact and there must be no points of broken insulation on

the cable or cracks on the electrode stem or bulb. Connectors must be

perfectly clean and dry. If any scratches or cracks are present, replace the

electrode. Rinse off any salt deposits with water.

CLEANING PROCEDURE

General Soak in HI 7061 general cleaning solution for approx. 30

minutes.

Removal of films, dirt or deposits on the membrane/junction:

- Protein Soak in HI 7073 protein cleaning solution for 15 minutes.

- Inorganic Soak in HI 7074 inorganic cleaning solution for 15 minutes.

- Oil/grease Rinse with HI 7077 oil & fat cleaning solution.

10 11

If the batteries become weak, the meter will

display a "V" on the LCD to warn the user that

only a few hours of working life are left.

HI 9210N is also supplied with BEPS (Battery Error Prevention System),

that automatically shuts the meter off when the battery level is too low to

ensure reliable readings.

Battery replacement must only take place in a non hazardous area and

using the battery types specified in this instruction manual.

To replace the batteries, remove the rear cover of

the instrument and replace all four 1.5V AA

batteries with new ones, while paying attention

to the correct polarity. Replace the cover and

tighten the screws.

The meter is reset every time the batteries are

removed. In case of any functional problems, the

meter can be reset by removing and reinstalling

the batteries.

BATTERY REPLACEMENT

IMPORTANT: After performing any of the cleaning procedures, rinse the

electrode thoroughly with distilled water and soak it in HI 70300 storage

solution for at least 1 hour before taking measurements.

TROUBLESHOOTING

Evaluate your electrode performance based on the following.

•Noise (Readings fluctuate up and down) could be due to clogged/

dirty junction: Refer to the Cleaning Procedure above.

•Dry membrane/junction: Soak in HI 70300 storage solution for at

least one hour.

•Drifting: Soak the electrode tip in warm (approx. 50-60°C) HI 7082

solution for one hour and rinse the tip with distilled water.

•Low slope: Refer to the cleaning procedure above.

•No slope: Check the electrode for cracks in glass stem or bulb and

replace the electrode.

•Slow response/excessive drift: Soak the tip in HI 7061 solution for

30 minutes, rinse thoroughly in distilled water and then follow the

Cleaning Procedure above.

HI 1217D Amplified, gel filled pH electrode with built-in temperature

sensor, DIN connector and 1 m (3.3’) cable

HI 70004P pH 4.01 buffer solution, 20 mL sachet, 25 pcs

HI 70007P pH 7.01 buffer solution, 20 mL sachet, 25 pcs

HI 70010P pH 10.01 buffer solution, 20 mL sachet, 25 pcs

HI 7004L pH 4.01 buffer solution, 500 mL bottle

HI 7006L pH 6.86 buffer solution, 500 mL bottle

HI 7007L pH 7.01 buffer solution, 500 mL bottle

HI 7009L pH 9.18 buffer solution, 500 mL bottle

HI 7010L pH 10.01 buffer solution, 500 mL bottle

HI 8004L pH 4.01 buffer solution, 500 mL FDA bottle

HI 8006L pH 6.86 buffer solution, 500 mL FDA bottle

HI 8007L pH 7.01 buffer solution, 500 mL FDA bottle

HI 8009L pH 9.18 buffer solution, 500 mL FDA bottle

HI 8010L pH 10.01 buffer solution, 500 mL FDA bottle

HI 70300L Storage solution, 500 mL bottle

HI 70000P Electrode rinse solution, 20 mL sachet, 25 pcs

HI 7061L General cleaning solution, 500 mL bottle

HI 7073L Protein cleaning solution, 500 mL bottle

HI 7074L Inorganic cleaning solution, 500 mL bottle

HI 7077L Oil & Fat cleaning solution, 500 mL bottle

HI 80300L Storage solution, 500 mL FDA bottle

HI 8061L General cleaning solution, 500 mL FDA bottle

HI 8073L Protein cleaning solution, 500 mL FDA bottle

HI 8077L Oil & Fat cleaning solution, 500 mL FDA bottle

HI 721317 Rugged carrying case

HI 76405 Electrode holder

ACCESSORIES

MAN9210N 05/05

SALES AND TECHNICAL SERVICE CONTACTS

Australia:

Tel. (03) 9769.0666 • Fax (03) 9769.0699

China:

Tel. (10) 88570068 • Fax (10) 88570060

Egypt:

Tel. & Fax (02) 2758.683

Germany:

Tel. (07851) 9129-0 • Fax (07851) 9129-99

Greece:

Tel. (210) 823.5192 • Fax (210) 884.0210

Indonesia:

Tel. (21) 4584.2941 • Fax (21) 4584.2942

Japan:

Tel. (03) 3258.9565 • Fax (03) 3258.9567

Korea:

Tel. (02) 2278.5147 • Fax (02) 2264.1729

Malaysia:

Tel. (603) 5638.9940 • Fax (603) 5638.9829

Singapore:

Tel. 6296.7118 • Fax 6291.6906

South Africa:

Tel. (011) 615.6076 • Fax (011) 615.8582

Taiwan:

Tel. 886.2.2739.3014 • Fax 886.2.2739.2983

Thailand:

Tel. 66-2619-0708 • Fax 66-2619-0061

United Kingdom:

Tel. (01525) 850.855 • Fax (01525) 853.668

USA:

Tel. (401) 765.7500 • Fax (401) 765.7575

For e-mail contacts and complete list of Sales and Tech-

nical offices, please see www.hannainst.com

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