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12

While in normal measurement mode, press and hold the CFM/SETUP key for about
5 seconds until the meter enters the menu selection mode.
The following parameters can be set from the menu:
1. Auto-off feature: 20 minutes (default setting) or disabled;
2. Acoustic signal: enabled (default setting) or disabled;
3. Temperature unit: °C (default setting) or °F.
When entering the menu mode, the auto-off selection is entered. The LCD shows

in three subsequent screens "Auto", "OFF" and "20" to indicate that the 20

minutes selection is active, or "Auto", "OFF" and "no" if the feature is disabled.

The user can toggle the selection by pressing CAL/SELECT or move to the next

step with CFM/SETUP.
The following selection is the acoustic signal, which is displayed on two

subsequent screens: "bEEP", "OFF" when the feature is disabled, and "bEEP",

"On" when the feature is enabled.

Press CAL/SELECT to toggle the selection and CFM/SETUP to move to next step.
At this point it is possible to set the temperature unit, by selecting "Unit", "°C"

or "Unit", "°F".

Press CAL/SELECT to toggle the selection and CFM/SETUP to exit the menu

selection mode and return to normal measurement mode.

MENU SELECTION

MENU SELECTION

MENU SELECTION

MENU SELECTION

MENU SELECTION

17

ELECTRODE CONDITIONING & MAINTENANCE

ELECTRODE CONDITIONING & MAINTENANCE

ELECTRODE CONDITIONING & MAINTENANCE

ELECTRODE CONDITIONING & MAINTENANCE

ELECTRODE CONDITIONING & MAINTENANCE

PREPARATION PROCEDURE

Remove the electrode 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 have formed inside the glass bulb. The
electrode cannot function properly under these conditions. These bubbles can be
removed by "shaking down" the electrode as you would do with a glass
thermometer.
If the bulb and/or junction are dry, soak the electrode in 

HI 70300 

storage

solution for at least one hour.

 Only for refillable electrodes; must be open while measuring.

Summary of Contents for HI 8424NEW

Page 1: ...02 2278 5147 Fax 02 2264 1729 Malaysia Tel 603 5638 9940 Fax 603 5638 9829 Singapore Tel 6296 7118 Fax 6291 6906 SouthAfrica Tel 011 615 6076 Fax 011 615 8582 Taiwan Tel 886 2 2739 3014 Fax 886 2 273...

Page 2: ...e instru ment 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 in...

Page 3: ...itches from 0 1 mV to 1 mV when readings exceed 699 9 mV The user can set the following parameters by entering a setup mode through the keyboard enabling or disabling the auto off feature enabling or...

Page 4: ...S 5 Cheese FC 200B FC 200S 6 Dairyproducts FC 911B FC 100B 7 Dirtywater HI 1230B HI 1210S 8 Emulsions HI 1053B HI1050S 9 Environment HI 1230B HI1210S 10 Flasks HI 1331B HI1310S 11 Foodindustrygeneralu...

Page 5: ...tempC pocket size thermometer 50 0 to 150 0 C HI 98502 ChecktempF pocket size thermometer 58 0 to 302 0 F HI 710015 Shockproof rubber boot blue HI 710016 Shockproof rubber boot orange HI 710022 Spare...

Page 6: ...isplay will show the pH value automatically compensated for temperature Notes In order to take accurate pH measurements make sure that the instrument has been calibrated before use see page 9 If measu...

Page 7: ...ase at 25 C ORP MEASUREMENTS Oxidation Reduction Potential ORP measurements provide a quantification of the oxidizing or reducing power of the sample tested Connect the ORP electrode optional to the B...

Page 8: ...HOLD again to return to normal mode If enabled keypresses are followed with an acoustic signal A lower note indicates that the key is not currently active To save battery life the meter is provided wi...

Page 9: ...ubmerged approximately 4 cm 1 into the solution The temperature probe should be located close to the pH electrode Press RANGE to display pH measurement Press CAL to enter the calibration mode The buff...

Page 10: ...19 pH CALIBRATION SOLUTIONS HI 70004P pH 4 01 buffer solution 20 mL sachet 25 pcs HI 7004M pH 4 01 buffer solution 230 mL bottle HI 7004L pH 4 01 buffer solution 500 mL bottle HI 8004L pH 4 01 buffer...

Page 11: ...er immerse it 4 cm 1 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 the solution to be tested before...

Page 12: ...P to move to next step At this point it is possible to set the temperature unit by selecting Unit C or Unit F Press CAL SELECT to toggle the selection and CFM SETUP to exit the menu selection mode and...

Page 13: ...pH electrode Soak the electrode tip excessive drift in HI 7061 solution for 30 minutes Reading fluctuates Clogged dirty junction Soak the electrode tip up and down noise or low electrolyte level in wa...

Page 14: ...a good seal Replacement should take place in a non hazardous area using a 9V Ni MH rechargeable battery Note The meter can also be powered with a normal 9V alkaline battery NEVER USE THE HI 710040 CH...

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