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9

ORP MEASUREMENTS (HI 9125 only)

To perform ORP measurements, connect an optional ORP electrode
(see “Accessories” section) to the meter and turn it ON.
If necessary, enter the mV mode by pressing 

RANGE

 until the display

changes to mV.
Submerse the ORP electrode 3 cm (1¼”) into the sample to be tested
and wait a few minutes for the reading to stabilize.
Measurements within the ±699.9 mV range are displayed with
0.1 mV resolution, while outside this range the resolution automatically
switches to 1 mV.
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).

MEM & MR FUNCTIONS

The instrument allows the user to store the current measurement (pH
and temperature, or mV and temperature) into internal memory by
pressing the 

MEM

 key. The “

MEMORIZE

” tag lights up on display.

Stored values can be recalled by pressing 

MR

: the display will show

the values and the “

RECALL MEMORIZED

” tag as long as the

button is pressed.

Содержание HI 9124

Страница 1: ...1 Instruction Manual www hannainst com HI 9124 HI 9125 Portable Waterproof pH Meters ...

Страница 2: ...RANTY WARRANTY HI 9124 HI 9125 are guaranteed for two years against defects in workmanship 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...

Страница 3: ...strument from the packing material and examine it 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 meter is supplied with HI 1230B non refillable combination double junction pH electrode with gelled electrolyte HI 7662 stainless steel temperature probe with 1 m 3 3 cable pH 4 01 pH 7 01 buffer solut...

Страница 4: ...d be replaced Calibration messages WAIT NOT READY blinking buffer has been recognized but reading is not stable READY on buffer has been recognized and reading is stable WRONG and WRONG blinking alternatively wrong buffer value not recognized Main active key messages light up for indicating the corresponding active key CFM blinking ask for confirmation of calibration or set value MR on MR key avai...

Страница 5: ...firm calibration 6 Battery compartment cap 7 Temperature probe socket 8 BNC electrode connector 9 MR key to recall stored value from memory 10 MEM key to store reading in memory 11 p and q keys for manual temperature setting or selecting pH buffer value 12 Secondary display 13 Primary display FUNCTIONAL DESCRIPTION FUNCTIONAL DESCRIPTION FUNCTIONAL DESCRIPTION FUNCTIONAL DESCRIPTION FUNCTIONAL DES...

Страница 6: ...S 8 0 1 o t 0 8 m o r F n o i t a s n e p m o C e r u t a r e p m e T C 0 0 2 1 o t 0 0 2 m o r f c i t a m o t u A l a u n a m r o F 0 8 4 2 o t 0 4 e b o r p e r u t a r e p m e t t u o h t i w e d o r t c e l E H p B 0 3 2 1 I H d e d u l c n i e b o r P e r u t a r e p m e T 2 6 6 7 I H d e d u l c n i e c n a d e p m I t u p n I 0 1 2 1 s m h o e f i L e p y T y r e t t a B s e i r e t t a b ...

Страница 7: ...ile the instrument performs a self check or as long as the button is held The meter automatically enters measurement mode After measurement switch the meter off Clean the electrode and store it with a few drops of HI 70300 storage solution in the protective cap To save batteries the auto off feature turns the meter off after 20 minutes with no button pressed To disable this feature see Setup Menu ...

Страница 8: ...minutes for thermal equilibrium To use the meter s Automatic Temperature Compensation feature submerse the temperature probe into the sample as close to the electrode as possible and wait for a few minutes If manual temperature compensation is desired the temperature probe must be disconnected from the instrument The display will show the default temperature of 25 C or the last temperature set wit...

Страница 9: ... while outside this range the resolution automatically switches to 1 mV 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 MEM MR FUNCTIONS The instrument allows the user to store the current measurement pH and temperature or mV and temperature into...

Страница 10: ...erform pH calibration Make sure that the meter is in the pH mode HI 9125 only Remove the protective cap and rinse the electrode with some of the buffer solution to be used for the first calibration point There is a choice of 5 memorized buffers 4 01 6 86 7 01 9 18 and 10 01 pH TWO POINT CALIBRATION Press the CAL key The CAL and indicators will be displayed The secondary LCD will display buffer 7 0...

Страница 11: ...The calibrated reading is then displayed on the primary LCD while the secondary LCD will show the second buffer to be used for calibration pH 4 01 After the first calibration point is confirmed submerse the electrode into the second buffer pH 4 01 10 01 or 9 18 and stir gently Choose pH 4 01 for acidic samples and pH 10 01 or 9 18 for alkaline solutions Submerse the electrode approx 3 cm 1 into th...

Страница 12: ...e other value for the second point same for pH 10 01 and 9 18 During calibration the secondary LCD shows the selected buffer value For the HI 9125 model it is possible to display the buffer temperature during calibration by pressing RANGE To clear a previous calibration and return to the default values in calibration mode press CFM then CAL before the first buffer is accepted The LCD will show CLr...

Страница 13: ...8 6 3 0 7 2 2 9 6 0 0 1 5 2 7 7 1 0 4 6 8 6 1 0 7 8 1 9 1 0 0 1 0 3 6 8 2 0 4 5 8 6 0 0 7 4 1 9 6 9 9 5 3 5 9 3 0 4 4 8 6 9 9 6 1 1 9 2 9 9 0 4 4 0 1 4 0 4 4 8 6 8 9 6 7 0 9 8 8 9 5 4 3 1 1 5 0 4 3 8 6 8 9 6 4 0 9 5 8 9 0 5 2 2 1 6 0 4 3 8 6 8 9 6 1 0 9 2 8 9 5 5 1 3 1 8 0 4 4 8 6 8 9 6 9 9 8 9 7 9 0 6 0 4 1 9 0 4 4 8 6 8 9 6 7 9 8 7 7 9 5 6 9 4 1 1 1 4 4 8 6 9 9 6 5 9 8 6 7 9 0 7 8 5 1 2 1 4 5 8 ...

Страница 14: ...ce the menu is entered each parameter can be changed by using the ARROW keys then pressing the CFM key will confirm the value and scroll to the next parameter 1 Audible signal On default or Off 2 Auto off feature 20 minutes default or disabled 3 Temperature measure unit ºC default or ºF After setting the last parameter pressing the CFM key will confirm the value and return to measurement mode SETU...

Страница 15: ...ibrated for mV range at the factory For optimum accuracy it is recommended to recalibrate the meter for mV readings at least once a year Contact your Dealer or the nearest Hanna Customer Service Center for more information m m m m mV CALIBRATION HI 9125 V CALIBRATION HI 9125 V CALIBRATION HI 9125 V CALIBRATION HI 9125 V CALIBRATION HI 9125 only only only only only TEMPERATURE CALIBRATION TEMPERATU...

Страница 16: ...ge is displayed If the batteries become weak the display will flash the battery symbol to advise the user that approximately 1 hour of working time remains It is recommended to change the batteries as soon as the battery symbol appears blinking The instrument is also provided with the BEPS Battery Error Prevention System feature which automatically turns the instrument off when the battery level i...

Страница 17: ... 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 compartment observing the polarity on the rear of the instrument Reattach the battery compartment cap ...

Страница 18: ...rature the higher the resistance It takes more time for the reading to stabilize if the resistance is higher In addition the response time will suffer to a greater degree at temperatures below 25 C Since the resistance of the pH electrode is in the range of 50 200 Mohms the current across the membrane is in the pico Ampere range Large currents can disturb the calibration of the electrode for many ...

Страница 19: ...ode 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 or longer Not present in gel electrodes E E E E ELECTRODE CONDITIONING MAINTENANCE LECTRODE CONDITIONING MAINTENANCE LECTRODE CONDITIONING MAI...

Страница 20: ...ectrode stem or bulb If any scratches or cracks are present replace the electrode Rinse off any salt deposits with water Connectors must be perfectly clean and dry For refillable electrodes Refill the electrode with fresh electrolyte see the electrode s specifications to select the correct refilling solution Allow the electrode to stand upright for 1 hour Follow the Storage Procedure above For non...

Страница 21: ... t a r e p m e t h t i w e b o r p e r u t a r e 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 g n o r W 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 s w o h s y a l p s i D y r e t t a b g n i k n i l b l o b m y s l e v e l y r e t t a b w o L s e i r e t t a b e h t e c a l p e R e t a r b i l a c o t s l i a f r e t e M y t l u a f s e v i g r o s g n i d a e r e d o r t c e l...

Страница 22: ...tion 230 mL bottle HI 7073L Protein Cleaning Solution 500 mL bottle HI 7073M Protein Cleaning Solution 230 mL bottle HI 7074L Inorganic Cleaning Solution 500 mL bottle HI 7074M Inorganic Cleaning Solution 230 mL bottle HI 7077L Oil Fat Cleaning Solution 500 mL bottle HI 7077M Oil Fat Cleaning Solution 230 mL bottle REFILLING ELECTROLYTE SOLUTIONS 50 mL 4 pcs HI 7071 3 5M KCl AgCl Electrolyte for s...

Страница 23: ...pe refillable combination pH electrode Use emulsions HI 1083B Glass body micro Viscolene non refillable combination pH electrode Use biotechnology micro titration HI 1131B Glass body single junction refillable combination pH electrode Use general purpose 120 mm 4 7 12 mm 0 5 9 5mm DIA 0 37 S VERSION HI 1043 120 mm 4 7 12 mm 0 5 S VERSION HI 1053 120 mm 4 7 12 mm 0 5 5 mm 0 2 3 mm 0 12 3 0 mm DIA 0...

Страница 24: ...ombination pH electrode Use general field HI 2031B Glass body semimicro conic refillable combination pH electrode Use semisolid products HI 1332B Plastic body PES double junction refillable combination pH electrode Use general purpose 120 mm 4 7 12 mm 0 5 S VERSION HI 1230 75 mm 2 95 6 mm 0 25 S VERSION HI 2031 120 mm 4 7 12 mm 0 5 S VERSION HI 1332 210 mm 8 25 8 mm 0 3 7 5mm DIA 0 29 S VERSION HI...

Страница 25: ...ood industry FC 200B Plastic body PVDF open junction conic Viscolene non refillable combination pH electrode Use meat cheese FC 210B Glass body double junction conic Viscolene non refillable combination pH electrode Use milk yogurt FC 220B Glass body triple ceramic single junction refillable combination pH electrode Use food processing FC 911B Plastic body PVDF double junction refillable with buil...

Страница 26: ...body single junction flat tip Viscolene non refillable combination pH electrode Use surface measurement ORP ELECTRODES HI 3131B Glass body refillable combination platinum ORP electrode Use titration HI 3230B Plastic body PES gel filled combination platinum ORP electrode Use general purpose HI 4430B Plastic body PES gel filled combination gold ORP electrode Use general purpose Consult the Hanna Gen...

Страница 27: ...o follow all necessary steps to correct interferences The glass bulb at the end of the pH electrode is sensitive to electrostatic discharges Avoid touching this glass bulb at all times During operation ESD wrist straps should be worn to avoid possible damage to the electrode by electrostatic discharges Any variation introduced by the user to the supplied equipment may degrade the instruments EMC p...

Страница 28: ...0 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 com Local Sales and Customer Service Office ...

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