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Hanna Instruments HI 98402, Instruction Manual, Page: 17 / 20

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17

FLUORIDE ELECTRODE CLEANING

General:

Rinse the fluoride electrode with deionized water.

Protein, oil & fat:

Clean the electrode tip with a cotton wool

soaked in alcohol, then rinse with deionized water.

IMPORTANT

: After cleaning, rinse the fluoride electrode thoroughly

with deionized water and dry it attentively with a non-
abrasive cloth.

TROUBLESHOOTING

•

Reading fluctuates

: could be due to dirty or blocked reference

electrode junction. Follow the cleaning procedure above.

•

Reading drifts

: submerge the tip of the reference electrode in

HI 7082

 solution at a temperature of 50-60°C for about 1 hour.

Afterwards, rinse with deionized water.

•

No slope (meter always reads the same value)

: the bulb or

stem of the fluoride electrode might be cracked. Repeat the mea-
surement with a new fluoride electrode.

•

Response (of the fluoride electrode) is sluggish

: immerse the

fluoride electrode in 

HI 4010-10

 solution for 3 hours.

Summary of Contents for HI 98402

Page 1: ...1 www hannainst com Instruction Manual HI 98402 Accurate Fluoride and Temperature Meter...

Page 2: ...ot hesitate to e mail us at tech hannainst com HI 98402 is guaranteed for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instru...

Page 3: ...rolled for added precision and simplicity The calibration can be performed at one or two points The calibration points can be chosen among 1 mg L ppm 2 mg L 10 mg L 100 mg L and 1000 mg L HI 98402 is...

Page 4: ...y holder cap 5 Liquid Crystal Display LCD 6 On Off key to turn the instrument ON and OFF 7 CAL key to enter exit calibration mode 8 Select key to select setup item STD key to select calibration standa...

Page 5: ...s n e p m o c e r u t a r e p m e T e b o r p e r u t a r e p m e t h t i w C 5 5 o t 5 c i t a m o t u A s e d o r t c e l E 0 1 0 4 I H e l b a c 3 3 m 1 d n a C N B h t i w e d o r t c e l e e d i...

Page 6: ...deionized water dry it with a non abrasive cloth and store it dry The HI 5313 reference electrode should be kept wet After use rinse it with deionized water and store it with a few drops of HI 7082 so...

Page 7: ...temperature will be displayed on the upper and lower displays respectively Notes The reading is automatic temperature compensated in a 5 0 to 55 0 C temperature range The ATC tag appears on the LCD t...

Page 8: ...d sample Wait for the reading to stabilize The temperature of the solution will be shown on the lower part of the display Notes If the temperature is out of range the last range value will be displaye...

Page 9: ...probe to their respective connectors on top of the meter Switch the meter on by pressing the ON OFF button Note For best results it is recommended to prepare two beakers for each calibration point th...

Page 10: ...ary LCD will display the second expected standard value together with CAL and Cal Point 2 tags After the first calibration point is confirmed submerse the Fluoride the reference electrodes and the tem...

Page 11: ...any time The following table lists the SETUP parameters their valid values range and the factory settings default Notes Press and hold Setup then Select before CFM tag appears to toggle between standa...

Page 12: ...nd hold down the CAL Setup keys then power on the instrument The CAL tag will appear and the secondary LCD will show 0 0 C The primary LCD will display the measured temperature or the message if the m...

Page 13: ...Press CFM to confirm The secondary LCD will display 50 0 C Submerse the temperature probe into the sec ond vessel as close as possible to the reference thermometer Allow a few seconds for the probe to...

Page 14: ...s follow the next steps Turn the instrument OFF Open the battery compartment cap located on the top of the instrument Remove old batteries Insert three new 1 5V AAA batteries in the battery compart me...

Page 15: ...ing active mode and blink for warning the user MEASURE on Instrument in measurement mode SETUP on SETUP menu mode has been entered CALIBRATION on calibration mode has been entered Indication of temper...

Page 16: ...electrode must be stored dry to prolong its life After use rinse it with deionized water dry it attentively with a non abrasive cloth and store it dry The HI 5313 reference electrode should be kept we...

Page 17: ...Reading fluctuates could be due to dirty or blocked reference electrode junction Follow the cleaning procedure above Reading drifts submerge the tip of the reference electrode in HI 7082 solution at a...

Page 18: ...p m e t n e k o r B e b o r p e r u t a r e p m e t e c a l p e R e b o r p e t a r b i l a c o t s l i a f r e t e M s g n i d a e r y t l u a f s e v i g r o r o E S I n e k o r B e d o r t c e l e...

Page 19: ...eral cleaning solution 230 mL FDA bottle HI 7061L General cleaning solution 500 mL bottle HI 8061L General cleaning solution 500 mL FDA bottle HI 7073M Protein cleaning solution 230 mL bottle HI 8073M...

Page 20: ...Hanna Instruments Inc Highland Industrial Park 584 Park East Drive Woonsocket RI 02895 USA Technical Support for Customers Tel 800 426 6287 Fax 401 765 7575 E mail tech hannainst com www hannainst co...

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