Hanna Instruments HI 98180 User Manual

Instruction Manual

HI 98180 HI 98181 HI 98182 HI 98183 HI 98184 HI 98185

Calibration Check

Waterproof

pH/mV/ISE/Temperature

Meters

www.hannainst.com

Dear Customer, Thank you for choosing a Hanna Instruments product. Please read this instruction manual carefully before using the instruments. This manual will provide you with the necessary information for correct use of

the instruments, as well as a precise idea of their versatility. If you need additional technical information, do not hesitate to e-mail us at

tech@hannainst.com or turn to the back cover for our worldwide contact list. These instruments are in compliance with directives.

WARRANTYWARRANTY

WARRANTY

WARRANTYWARRANTY

The HI 9818x series are guaranteed for two years against defects in workman- ship and materials when used for their intended purpose and maintained according to instructions. Electrodes and probes are guaranteed for six months. This warranty is limited to repair or replacement free of charge.

Damage due to accidents, misuse, tampering or lack of prescribed maintenance is not covered.

If service is required, contact the dealer from whom you purchased the instrument. If under warranty, report the model number, date of purchase, serial number and the nature of the problem. 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 Technical Service department and then send it with shipping costs prepaid. When shipping any instrument, make sure it is properly packed for complete protection.

TABLE OF CONTENTSTABLE OF CONTENTS

TABLE OF CONTENTS

TABLE OF CONTENTSTABLE OF CONTENTS

WARRANTY .......................................................................................................................................... 2

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

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

HI 98180 AND HI 98181 FUNCTIONAL DESCRIPTION ............................................................................... 5

HI 98182, HI 98183, HI 98184 AND HI 98185 FUNCTIONAL DESCRIPTION ................................................. 7

HI 98180 AND HI 98181 SPECIFICATIONS ............................................................................................... 9

HI 98182 AND HI 98183 SPECIFICATIONS ............................................................................................. 10

HI 98184 AND HI 98185 SPECIFICATIONS ............................................................................................. 11

OPERATIONAL GUIDE ......................................................................................................................... 12

pH CALIBRATION ............................................................................................................................... 16

pH BUFFER TEMPERATURE DEPENDENCE .............................................................................................. 25

RELATIVE mV CALIBRATION HI 98181 & HI 98182 ................................................................................. 26

ISE CALIBRATION HI 98184 & HI 98185 ............................................................................................... 27

GOOD LABORATORY PRACTICE (GLP) ..................................................................................................... 31

SETUP .............................................................................................................................................. 33

LOGGING ........................................................................................................................................... 46

MEMORY FUNCTION .......................................................................................................................... 47

AutoEnd ............................................................................................................................................ 48

mV AND TEMPERATURE CALIBRATION (for technical personnel only) ........................................................ 49

PC INTERFACE (not for HI 98180 and HI 98181) ..................................................................................... 52

BATTERIES RECHARGING/REPLACEMENT ................................................................................................ 58

TEMPERATURE CORRELATION FOR pH SENSITIVE GLASS .......................................................................... 60

ELECTRODE CONDITIONING & MAINTENANCE ....................................................................................... 61

TROUBLESHOOTING GUIDE ................................................................................................................ 64

ACCESSORIES .................................................................................................................................... 65

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 shipping. If there is any damage, notify your Dealer or the nearest Hanna Customer Service Center.

Each instrument is supplied with:

• HI 1230B Combination double-junction, gel pH Electrode (HI 98180/1/2)

• HI 7662 stainless steel Temperature Probe with 1 m (3.3') Cable (HI 98180/1/2)

• HI 72911B Combined pH temperature electrode (HI 98183/4/5)

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

• 100 mL Plastic Beaker

• 4 x 1.2V AA Rechargeable Batteries (inside the instrument)

• HI 710042 Inductive Recharger with power adaptor

• Instruction Manual

• Rugged carrying case

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.

GENERAL DESCRIPTIONGENERAL DESCRIPTION

GENERAL DESCRIPTION

GENERAL DESCRIPTIONGENERAL DESCRIPTION

The HI 9818x instruments are state-of-the-art, heavy-duty pH meters, de- signed to provide laboratory results and accuracy under harsh industrial conditions. They are 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:

• 7 memorized 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 (not for HI 98180/1).

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

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

• User selectable “Outside Calibration Range” warning.

• Monitoring of the electrode aging.

• User-selectable “calibration time out” to remind when a new calibration is necessary.

Moreover, they offer an extended temperature range from –20 to 120 ºC

Hanna Instruments reserves the right to modify the design,

construction and appearance of its products without advance notice.

(–4 to 248 ºF), using HI 7662 interchangeable temperature probes or temperature sensor inside pH electrode. These instruments can also measure with ORP electrodes, thanks to their capability to measure mV with a resolution up to 0.1 mV (not for HI 98180). HI 98184 and HI 98185 can also measure with ISE electrodes on ppm scale. The electrode type and unit selection capability (for HI 98185) the ion change selection capability (for HI 98184) and the ISE calibration in up to five calibration standard solutions make this instrument very useful for a large range of concentration solutions measurements. Other features include:

• Relative mV measurements

• Log on demand up to 300 samples (100 samples on each range - pH, mV, ISE) (not for HI 98180 and HI 98181)

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

• GLP feature, to view last calibration data for pH, Rel mV or ISE

• PC interface

Front viewFront view

Front view

Front viewFront view

HI 98180, HI 98181HI 98180, HI 98181

HI 98180, HI 98181

HI 98180, HI 98181HI 98180, HI 98181

FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION

FUNCTIONAL DESCRIPTION

FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION

1) Liquid Crystal Display (LCD).

2) Functional keys.

3) / keys to manually increase/decrease the parameters or to scroll between

the parameter list.

4) ESC to escape the current mode, exit calibration, setup, help. etc.

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

6) CLR key, to clean calibration parameters.

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

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

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

10) LIGHT key to toggle between backlighting.

11) MODE key, to change pH resolution or to toggle between mV and Rel mV mode

(HI 98181 only).

12) AutoEnd key, to freeze the first stable reading on the LCD (HI 98180).

RANGE key, to switch between pH and mV range (HI 98181).

13) Help key to enter/exit contextual help.

Top viewTop view

Top view

Top viewTop view

14) BNC electrode connector.

15) Temperature socket.

Front viewFront view

Front view

Front viewFront view

HI 98182, HI 98183,HI 98182, HI 98183,

HI 98182, HI 98183,

HI 98182, HI 98183,HI 98182, HI 98183,

HI 98184, AND HI 98185HI 98184, AND HI 98185

HI 98184, AND HI 98185

HI 98184, AND HI 98185HI 98184, AND HI 98185

FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION

FUNCTIONAL DESCRIPTION

FUNCTIONAL DESCRIPTIONFUNCTIONAL DESCRIPTION

1) Liquid Crystal Display (LCD).

2) Functional keys.

3) / keys to manually increase/decrease the parameters or to scroll between

the parameter list.

4) ESC to escape the current mode, exit calibration, setup, help, etc.

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

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

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

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

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

10) LIGHT key to toggle between backlighting.

11) MODE key, to change pH resolution or to toggle between mV and Rel mV mode.

12) RANGE key, to switch between pH and mV range (HI 98182/3) or pH, mV and

ISE range (HI 98184/5).

13) Help key to enter/exit contextual help.

Top viewTop view

Top view

Top viewTop view

14) BNC electrode connector.

15) Reference socket (HI 98184/5).

16) Reference socket rubber stopper (HI 98184/5).

17) Temperature socket

18) Temperature socket rubber stopper (HI 98183/4/5).

19) Temperature measurement rubber cork (HI 98183/4/5)

20) Serial communication rubber stopper (HI 98183/4/5).

21) USB Connector.

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SPECIFICATIONS

SPECIFICATIONSSPECIFICATIONS

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SPECIFICATIONSSPECIFICATIONS

SPECIFICATIONS

SPECIFICATIONSSPECIFICATIONS

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HI 98184 AND HI 98185

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SPECIFICATIONSSPECIFICATIONS

SPECIFICATIONS

SPECIFICATIONSSPECIFICATIONS

OPERATIONAL GUIDEOPERATIONAL GUIDE

OPERATIONAL GUIDE

OPERATIONAL GUIDEOPERATIONAL GUIDE

INITIAL PREPARATION

The instrument is supplied complete with rechargeable batteries. Proceed with a complete charging process before starting (see page 58).

To prepare the instrument for field measurements close the serial communication socket and all unused connector sockets with proper stopper (to ensure waterproof protection) (HI 98183/4/5 only). Use the holed temperature rubber cork for the temperature socket when temperature probe is connected (HI 98183/4/5 only).

Connect the pH electrode and the temperature probe to the BNC and temperature sockets on the top of the instrument. Push the pH electrode sleeve to cover the connector accomodation. The temperature probe is used in conjunction with the pH electrode to utilize the instrument's ATC capability, but it can also be used independently to take temperature measurements. If the probe is disconnected, temperature can be set manually with the ARROW keys (see page 13 for details).

Turn the instrument ON by pressing ON/OFF key. At start-up the display will show the Hanna logo for a few seconds followed by

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

After measurement switch the instrument off, clean the electrode and store it with a few drops of HI 70300 storage solution in the protection cap (see page 62).

The auto-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 33.

The auto-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 33.

pH MEASUREMENTS

To take a pH measurement remove the electrode protective cap and simply submerge the tip of the electrode (4cm/1½”) and the temperature probe into the sample to be tested.

If necessary, press RANGE until the display changes to the pH mode. Use Mode key to select the pH resolution.

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

On the pH screen are displayed:

• pH reading with the selected resolution.

• Temperature reading in the selected unit (ºC or ºF).

• Temperature compensation mode (MTC - manual, ATC - automatic).

While in MTC mode the indicate that the temperature can be manually changed using ARROW keys.

• 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 according with the model.

In order to take more accurate pH measurements, make sure that the instrument is calibrated (see page 16 for details).

It is recommended that the electrode is always kept wet 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. To use the instrument's Automatic Temperature Compensation feature, submerge the temperature probe into the sample as close to the electrode as possible and wait for a few seconds.

If manual temperature compensation (MTC) is desired, the temperature probe must be disconnected from the instrument.

The display will show the default temperature of 25 ºC, the last measured temperature reading, or the last set temperature, with the “MTC” indication.

The “MTC” indication and the symbol light up on the LCD to indicate that the instrument is in MTC mode and the ARROW keys can be used to enter the desired temperature value.

Note: When in MTC the user can press and hold the ARROW keys, and the

instrument will start incrementing /decrementing the temperature value. The instrument keeps measuring and the display is updated periodically.

ORP MEASUREMENTS (not for HI 98180)

To perform ORP measurements, connect an optional ORP electrode (see “Accessories“ section) to the instrument and turn it ON.

If necessary, enter the mV mode by pressing RANGE until the display changes to mV.

Submerge the ORP electrode tip (4cm/1½”) into the sample to be tested and wait a few seconds for the reading to stabilize.

Measurements are displayed with 0.1 mV resolution. The “ATC” (or “MTC”) message is turned off because mV readings are not

temperature compensated. For accurate ORP measurements, the surface of the electrode must be clean

and smooth. Pretreatment solutions are available to condition the electrode and improve its response time (see “Accessories” section, page 65).

RELATIVE mV MEASUREMENTS (not for HI 98180)

To enter Relative mV mode, press “MODE” while in mV measurement mode. The relative mV reading will be displayed along with the Absolute mV value and the current temperature readings.

The relative mV reading is equal to the difference between the absolute mV input value and relative mV offset established in the relative mV calibration.

Note: If using the pH electrode while in mV mode, the instrument will measure the mV generated by the pH electrode.

ISE MEASUREMENTS (HI 98184, HI 98185 only)

To perform ion concentration measurements, connect an optional ISE electrode and the corresponding reference (if necessary) to the instrument and turn it ON.

Enter the ISE mode by pressing RANGE until the display changes to ISE range.

Submerge the ISE electrode tip (4cm/1½”) into the sample to be tested and wait a few seconds for the reading to stabilize.

The ISE reading will be displayed along with the current temperature reading.

The “ATC” (or “MTC”) message is turned off because ppm readings are not temperature compensated.

In order to take accurate ISE measurements, make sure that the appropriate ISE electrode type and ISE unit were set in SETUP menu (HI 98185 only), or the proper ion charge is set (HI 98184 only), and the instrument was calibrated (see ISE CALIBRATION for details, page 27).

Notes: • When the reading is out of range, the display will flash the closest

full-scale value.

• The instrument will display “----” on the primary LCD if it is not

calibrated. Perform at least a one-point calibration in order to take ISE measurements.

• Changing the ISE electrode or the ion charge will need ISE range calibration.

TEMPERATURE MEASUREMENTS

Connect the HI 7662 temperature probe (HI 98180/1/2) or the temperature connector (HI 98183/4/5) to the appropriate socket. Immerse the temperature probe (HI 98180/1/2) or pH electrode (HI 98183/4/5) into the sample and allow the reading on the secondary LCD to stabilize.

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

degrees (ºF) (see SETUP for details, page 33) (not for HI 98180).

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 33) with no buttons pressed.

H CALIBRATIONH CALIBRATION

H CALIBRATION

H CALIBRATIONH CALIBRATION

It is recommended to calibrate the instrument frequently, especially if high accuracy is required.

The pH range should be recalibrated:

• Whenever the pH electrode is replaced.

• At least once a week.

• After testing aggressive chemicals.

• When calibration alarm time out is expired - “CAL DUE” blinks (if feature

is enabled in SETUP).

• If “Outside Cal Range” message blinks during pH measurement (the

measurement range is not covered by current calibration, if feature is enabled in SETUP).

PROCEDURE

All the familly instruments offers a choice of 7 memorized buffers (1.68, 4.01,

6.86, 7.01, 9.18, 10.01 and 12.45 pH). HI 98182/3/4/5 allow the user to set up to 5 custom buffers. The set custom buffers are the buffer values at 25 ºC.

When a custom buffer is selected during calibration, the “Custom” functional key is displayed on the LCD. Press Custom key in order to enter custom buffer changing mode. Use ARROW keys to change the value in a ±1.00 pH window, in according with the temperature reading and then Accept. Press ESC to leave custom buffers value unchanged.

For accurate pH measurements, it is recommended to perform a calibration in maximum allowed points. However, at least a two-point calibration is suggested.

The instrument will automatically skip the buffers used during calibration and the buffers which are in a ±0.2 pH window, around one of the calibrated buffers.

• Pour small quantities of selected buffer solutions into clean beakers. For accurate calibration use two beakers for each buffer solution, the first one for rinsing the electrode and the second one for calibration.

• Remove the protective cap and rinse the electrode with some of the buffer solution to be used for the first calibration point.

FIVE-POINT CALIBRATIONFIVE-POINT CALIBRATION

FIVE-POINT CALIBRATION

FIVE-POINT CALIBRATIONFIVE-POINT CALIBRATION

• Immerse the pH electrode and the temperature probe approximately 4 cm (1½”) into a buffer solution of your

9.18, 10.01, 12.45 or a custom buffer) and stir gently. The temperature probe should be close to the pH electrode.

choice (pH 1.68, 4.01, 6.86, 7.01,

• Press CAL. The instrument will display the measured pH, the LCD first expected buffer and the temperature reading.

• If necessary, press the ARROW keys to select a different buffer value.

• The “ ” tag will blink on the LCD until the reading is stable.

• When the reading is stable and close to the selected buffer, CFM functional key is displayed.

• Press CFM to confirm first point.

• The calibrated value and the second expected buffer value is then displayed on the LCD.

• After the first calibration point is confirmed, immerse the pH electrode and the temperature probe approximately 4 cm (1½”) into the second buffer solution and stir gently. The temperature probe should be close to the pH electrode.

• If necessary, press the ARROW keys to select a different buffer value.

• The “ ” tag will blink on the LCD until the reading is stable.

• When the reading is stable and close to the selected buffer, the CFM functional key is displayed.

• Press CFM to confirm calibration.

• The calibrated value and the third expected buffer value will be displayed.

• After the second calibration point is confirmed, immerse the pH electrode and the temperature probe approximately 4 cm (1½”) into the third buffer solution and stir gently. The temperature probe should be close to the pH electrode.

• If necessary, press the ARROW keys to select a different buffer value.

• The “ ” tag will blink on the LCD until the reading is stable.

• When the reading is stable and close to the selected buffer, the CFM functional key is displayed.

• Press CFM to confirm calibration.

• The calibrated value and the fourth expected value will be displayed.

• After the third calibration point is confirmed, immerse the pH electrode and the temperature probe approximately 4 cm (1½”) into the fourth buffer solution and stir gently. The temperature probe should be close to the pH electrode.

• If necessary, press the ARROW keys to select a different buffer value.

• The “ ” tag will blink on the LCD until the reading is stable.

• When the reading is stable and close to the selected buffer, the CFM functional key is displayed.

• Press CFM to confirm calibration.

• The calibrated value and the

• After the fourth calibration point is confirmed, immerse the pH electrode and the temperature probe approximately 4 cm (1½”) into the fifth buffer solution and stir gently. The temperature probe should be close to the pH electrode.

• If necessary, press the ARROW keys to select a different buffer value.

• The “ ” tag will blink on the LCD until the reading is stable.

• When the reading is stable and close to the selected buffer, the CFM functional key is displayed.

fifth

expected buffer will be displayed.

• Press CFM to confirm calibration.

• The instrument stores the calibration values and returns to normal measurement mode.

FOUR, THREE or TWO-POINT CALIBRATION

• Proceed as described in “FIVE-POINT CALIBRATION” section.

• Press CAL or ESC after the appropriate accepted calibration point. The instruments will return to measurement mode and will memorize the calibration data.

ONE-POINT CALIBRATION

Two SETUP selectable options are available for one-point calibration: Replace and Offset.

If the Replace option is selected, the slopes between current buffer and nearest lower and higher buffers will be reevaluated.

If the “Offset” option is selected, an electrode offset correction is performed keeping unchanged the existing slopes.

• Proceed as described in “FIVE-POINT CALIBRATION” section.

• Press CAL or ESC after the first calibration point was confirmed. The instruments will memorize the one-point calibration data and will return to measurement mode.

Notes: • Press MTC or MODE key to toggle between pH buffer selection and

the temperature reading during calibration while temperature probe is not connected (MTCmode)

• The displayed arrow is moving to the temperature value. Use

ARROW keys in order to change the temperature.

ERROR SCREENS Wrong buffer

The calibration cannot be confirmed.

The pH reading is not close to the selected buffer. Select another buffer using the ARROW keys or change the buffer.

Electrode Dirty/Broken alternatively with Buffer Contaminated The calibration cannot be confirmed.

The offset of the electrode is not in the accepted range. Check if the electrode is broken or clean it following the Cleaning Procedure (see page 65). Check the quality of the buffer. If necessary, change the buffer.

Wrong slope

The calibration cannot be confirmed.

The evaluated slope is less than the lowest accepted value (80% of default slope).

The evaluated slope is more than the highest accepted value (110 % of default slope).

Wrong old slope

An inconsistency between new and previous (old) calibration is detected. Clear old calibration parameters and proceed calibration from the current point. The instrument will keep all confirmed values during current calibration.

Note: For one-point calibration the electrode condition is not displayed in the

measurement screen.

Each time a buffer is confirmed, the new calibration parameters replace the old calibration parameters of the corresponding buffer.

If current confirmed buffer has no correspondence in the existing stored calibration and this is not full, the current buffer is added to the existing stored calibration.

If the existing stored calibration is full (five calibration points), after confirming the calibration point, the instrument will ask wich buffer will be replaced by current buffer.

Press ARROW keys to select another buffer to be replaced. Press CFM to confirm the buffer that will be replaced. Press CAL or ESC to leave replace mode. In this case, the buffer will not be

memorised. Note: The replaced buffer is not removed from calibration list and it can be

selected for the next calibration points.

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