Hanna Instruments IC-HI98165 Manuel utilisateur

INSTRUCTION MANUAL

HI98165

Professional pH and Temperature

Meter for Cheese

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.

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.

Dear

Customer,

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

SAFETY MEASURES ............................................................................................................

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

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

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

OPERATIONAL GUIDE ..........................................................................................................

pH CALIBRATION ................................................................................................................

pH BUFFER TEMPERATURE DEPENDENCE .............................................................................

GOOD LABORATORY PRACTICE (GLP) ....................................................................................

SETUP ...............................................................................................................................

LOGGING ...........................................................................................................................

AUTOEND ..........................................................................................................................

TEMPERATURE CALIBRATION (FOR TECHNICAL PERSONNEL ONLY) .........................................

PC INTERFACE ....................................................................................................................

BATTERIES REPLACEMENT ...................................................................................................

TEMPERATURE CORRELATION FOR pH SENSITIVE GLASS ........................................................

ELECTRODE CONDITIONING AND MAINTENANCE ....................................................................

TROUBLESHOOTING GUIDE ..................................................................................................

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

TABLE OF CONTENTS

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 damage, please contact your local Hanna

Instruments Office.

Each instrument is supplied with:

•FC2423 Pre‑amplified pH and temperature probe with stainless steel sheath

•HI700642 Cleaning solution for cheese residues (food industry) (2 pcs.)

•HI92000 PC Software

•HI920015 USB cable

•pH 4.01 & 7.01 Buffer solutions (230 mL each)

•100 mL Beaker (2 pcs.)

•1.5V AA Batteries (4 pcs.)

•HI720165 Hard carrying case

•Instruction Manual and Quick Reference Guide

•Certificate

•Instrument Quality Certificate

PRELIMINARY EXAMINATION

Note: Save all packing material until you are sure that the instrument functions correctly. All

defective items must be returned in the original packing with the supplied accessories.

SAFETY MEASURES

Before using this product, make sure that it is entirely suitable for your specific application and for

the environment in which it is used.

Operation of this instrument may cause interference to other electronic equipment, requiring the

operator to take steps to correct interference. Any variation introduced by the user to the supplied

equipment may degrade the instrument’s EMC performance.

To avoid damages or burns, do not put the instrument in microwave ovens. For your and the

instrument’s safety, do not use or store the instrument in hazardous environments.

GENERAL DESCRIPTION

Other features include:

• Log on demand up to 200 samples (100 pH and 100 mV).

• Auto Hold feature, to freeze first stable reading on the LCD.

• GLP feature, to view last calibration data for pH.

• PC interface.

The HI98165 is a portable pH and temperature meter designed for pH measurement in cheese.

Throughout the cheese making process, pH control is critical to ensure consistent fermentation and

food safety. If the pH is too low, the cheese may be prone to a brittle or pasty texture, as well as

growth of mold after packaging. If the pH is too high, the cheese may become too firm, and can

potentially be dangerous for consumption due to the risk of pathogen formation. The pH must be

carefully monitored to detect deviation from the optimal range, which can create problems with

texture, taste and public safety of cheese.

The HI98165 meter is provided with a series of new diagnostic features which add an entirely new

dimension to the measurement of pH, by allowing the user to dramatically improve the reliability of

the measurement:

• Seven standard buffers (pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01 and 12.45) for calibration.

• pH calibration up to five calibration points (see instrument specifications).

• Custom calibration with up to five custom buffers.

• Messages on the graphic LCD for an easy and accurate calibration.

• Cal Check™ Diagnostic features to alert the user when the electrode needs cleaning.

• Optional user enabled “Outside Calibration Range” warning.

• Monitoring of the electrode aging.

• User selectable “Calibration Time Out” to remind when a new calibration is necessary.

This meter is supplied with a pH electrode specifically designed for use with cheese. The FC2423

pH electrode with a built‑in temperature sensor features a stainless steel body with a conic glass

tip which allows for penetrations into solids, semi‑solids and emulsions for direct measurement of

pH in cheese products.

1) Liquid Crystal Display (LCD).

2) Functional keys.

3) /keys to scroll through calibration buffers, setup options, manual temperature compensation

and logged data.

4) ON/OFF ( )key, to turn the instrument ON and OFF.

5) LIGHT ( ) key to toggle display backlighting.

6) GLP key, to display Good Laboratory Practice information.

7) CAL key, to enter/exit calibration mode.

8) SETUP key, to enter/exit SETUP mode.

9) RCL key, to enter/exit view logged data mode.

10) MODE key to change pH resolution.

11) RANGE key, to switch between pH and mV range.

12) HELP key to enter/exit contextual help.

13) ESC to leave current mode, exit calibration, setup, help. etc.

FRONT VIEW

FUNCTIONAL DESCRIPTION

14) Electrode quick connect DIN connector.

15) USB connector.

TOP VIEW

FUNCTIONAL DESCRIPTION

SPECIFICATIONS

Range ‑2.0 to 20.0 pH / ‑2.00 to 20.00 pH / ‑2.000 to 20.000 pH

Resolution 0.1 pH / 0.01 pH / 0.001 pH

Accuracy ±0.1 pH / ±0.01 pH / ±0.002 pH

Temperature

Range ‑20.0 to 120.0 °C (‑4.0 to 248.0 °F)

Resolution 0.1 °C (0.1 °F)

Accuracy ±0.4 °C (±0.8 °F) (excluding probe error)

Range ±2000

Resolution 0.1 mV

Accuracy ±0.2 mV

pH Calibration

Up to five point calibration, seven standard buffers available

(pH 1.68, 4.01, 6.86, 7.01, 9.18, 10.01, 12.45), and five custom

buffers

Slope Calibration From 80 to 110%

Temperature Compensation Automatic

pH Electrode FC2423 pH & temperature

LOG On demand, 200 samples (100 pH and 100 mV)

Input Impedance 10¹² Ω

Battery Type/Life 1.5V AA batteries (4 pcs.) / approx. 200 hours of continuous use

without backlight (50 hours with backlight)

Auto Power Off User selectable: 5, 10, 30, 60 minutes or disabled

PC Interface opto‑isolated USB

Dimensions 185 x 93 x 35.2 mm (7.3 x 3.6 x 1.4”)

Weight 400 g (14.2 oz)

Environment 0 to 50 °C (32 to 122 °F) max. RH 100% IP67

OPERATIONAL GUIDE

INITIAL PREPARATION

The instrument is supplied complete with 1.5V AA (4 pcs.) batteries. For placing the batteries inside

the meter, see page 42.

Make sure that the protective micro USB cover is used when not connected to a computer to ensure

waterproof protection.

For HI98165 connect the pH/temperature electrode to the DIN connector.

Turn the instrument ON by pressing ON/OFF key.

At start‑up the display will show the Hanna Instruments logo for a few seconds followed by the

percentage indication of the remaining battery life, then enters the measurement mode.

After measurement switch the instrument off, clean the electrode and store it with a few drops of

HI70300 storage solution in the protective cap (see page 45).

The Auto Power Off feature turns the instrument off after a set period (default 30 min) with no button

pressed to save battery life. To set another period or to disable this feature, see SETUP menu on

page 23.

The Auto Light Off backlight feature turns the backlight off after a set period (default 1 min) with

no buttons pressed. To set another period or to disable this feature, see SETUP menu on page 23.

pH MEASUREMENTS

To take a pH measurement remove the electrode protective cap and simply submerge the tip of the

electrode (4 cm/1½") into the sample to be tested.

Press RANGE key to choose between pH and mV ranges.

Use MODE key to select the pH resolution.

Allow time for the electrode to adjust and reading to stabilize (hourglass symbol turns off).

OPERATIONAL GUIDE

• pH reading with the selected resolution.

• Temperature reading in the selected unit (°C or °F).

• Electrode condition during the calibration day.

• The buffers used in last pH calibration (if feature is enabled in SETUP).

• Battery level indicator.

• Available functional keys.

In order to take more accurate pH measurements, make sure that the instrument is calibrated (see

page 11 for calibration details).

It is recommended that the electrode is always kept moist and rinsed thoroughly with the sample to

be measured before use.

The pH reading is directly affected by temperature. For accurate pH measurements, temperature

must be taken into consideration. If the sample temperature is different from the temperature at

which the pH electrode was kept, allow a few minutes to reach thermal equilibrium.

On the pH screen are displayed:

TEMPERATURE MEASUREMENTS

For HI98165 the temperature sensor is connected through DIN socket.

Note: The temperature can be displayed in Celsius degrees (°C) or in Fahrenheit degrees

(°F) (see SETUP for details, page 23).

BACKLIGHT FEATURE

The instrument is provided with a Backlight feature, which can be easily toggled on and off through

the keyboard by pressing LIGHT.

Note: The backlight automatically shuts off after a set period (see SETUP for details,

page 23) with no buttons pressed.

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