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Hanna Instruments HI 2221, Инструкция по эксплуатации, Страница: 37 / 44

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37

TROUBLESHOOTING GUIDE

SYMPTOMS

PROBLEM

SOLUTION

Slow response/
excessive drift.

Dirty pH electrode. Clean the electrode and 

then soak the tip in HI7061 
or HI8061 for 30 minutes.

Readings fluctuate 
up and down 
(noise).

Clogged/dirty junc‑
tion. Low electrolyte 
level (refillable 
electrodes only).

Clean the electrode.
Refill with fresh solution (for 
refillable electrodes only). 
Check cable and connectors.

The meter does not
accept the buffer
solution for
calibration.

Dirty electrode or
contaminated buffer.

Follow the cleaning 
procedure. If still no results, 
replace the electrode. 
Replace buffer.

If the display 
shows: “pH” and “ 
‑2.00” or “16.00” 
blinking.

Out of range in the 
pH scale.

a) Verify that the electrode 
is connected.
b) Verify that the shipping 
cap has been removed.
c) Recalibrate the meter.
d) Make sure the pH sample 
is in the specified range.
e) Check electrolyte level 
and general state of the 
electrode.

If the display 
shows: “mV” 
and “‑2000” or 
“2000” blinking.

Out of range in the
mV scale.

Verify that the electrode is 
connected.

The meter does not
work with the
temperature probe.

Broken temperature 
probe. Wrong 
temperature probe 
used.

Replace the temperature
probe.

The meter fails to
calibrate or gives
faulty readings.

Broken pH electrode. Replace the electrode.

At startup the meter 
displays all LCD 
tags permanently.

One of the keys is
stuck.

Check the keyboard or
contact the vendor.

“Err xx” error
message displayed.

Internal error.

Power off the meter and
then power it on. If the error 
persists, contact the vendor.

Содержание HI 2221

Страница 1: ...1 Instruction Manual HI2221 HI2223 pH mV C Bench Meters with Calibration Check www hannainst com...

Страница 2: ...necessary information for correct use of these 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 c...

Страница 3: ...DE CONDITION AND ELECTRODE RESPONSE TIME 16 pH BUFFER TEMPERATURE DEPENDENCE 17 GOOD LABORATORY PRACTICE GLP 18 LOGGING 21 SETUP 24 TEMPERATURE CALIBRATION for technical personnel only 27 mV CALIBRATI...

Страница 4: ...ed pH ORP temperature bench meters with Calibration Check Calibration Check performs a set of diagnostic tests during calibration using the history of electrode slope and offset to detect problems tha...

Страница 5: ...key to manually decrease temperature value or other parameters 6 SETUP key to enter exit SETUP mode 7 RANGE key to select measurement range switch to focused data in SETUP or to toggle between buffer...

Страница 6: ...ints 7 buffers available 1 68 4 01 6 86 7 01 9 18 10 01 12 45 Logging 100 points Temperature Compensation Manual or Automatic from 20 0 to 120 0 C 4 0 to 248 0 F pH Electrode HI1131P glass body double...

Страница 7: ...tomatic up to 5 points 7 buffers available 1 68 4 01 6 86 7 01 9 18 10 01 12 45 Logging 500 points Temperature Compensation Manual or Automatic from 20 0 to 120 0 C 4 0 to 248 0 F pH Electrode HI1131P...

Страница 8: ...Hanna Instruments P type electrode the bar graph gauges will blink 25 seconds OFF 4 seconds ON full bar graph Fortemperaturemeasurementandautomatictemperaturecompensation connect the temperature probe...

Страница 9: ...compensated for To use the Automatic Temperature Compensation feature connect and submerse the HI7662 temperature probe into the sample as close to the electrode as possible and wait for a few minute...

Страница 10: ...any EMC interferences For accurate calibration and to minimize cross contamination use two beakers for each buffer solution One for rinsing the electrode and one for calibration pH CALIBRATION Pretre...

Страница 11: ...tly The temperature probe should be close to the pH electrode PresstheCALkey CAL and pH tagswillbeon andthe CLEAR CAL if new electrode tag will blink Press the CLR key if you are using a new electrode...

Страница 12: ...able Whenthereadingisstableandclosetotheselectedbufferthe CFM tag will blink Press CFM to confirm calibration The calibrated value is then displayed on the primary LCD and the third expected buffer va...

Страница 13: ...libration point was confirmed The instrument will memorize the calibration data and return to measurement mode ONE POINT CALIBRATION Two SETUP selectable options are available Pnt and OFFS If the Pnt...

Страница 14: ...ssageisdisplayed check if you have selected the proper calibration buffer CLEAN ELECTRODE This error message indicates a bad electrode condition offset out of accepted window or slope under the accept...

Страница 15: ...or both offset and slope parameters This variation may result from dirt on the electrode Refer to the electrode cleaning procedure This ensures the removal of film dirt or deposits on the glass bulb a...

Страница 16: ...tion at the time of calibration For a continuous display of electrode condition and response daily cali brationisnecessary ThisinformationcanalsobeviewedintheGLPdata If the instrument is not calibrate...

Страница 17: ...33 10 18 12 99 15 59 1 67 4 00 6 90 7 05 9 27 10 12 12 80 20 68 1 68 4 00 6 88 7 03 9 22 10 06 12 62 25 77 1 68 4 01 6 86 7 01 9 18 10 01 12 45 30 86 1 68 4 02 6 85 7 00 9 14 9 96 12 29 35 95 1 69 4 0...

Страница 18: ...on If the expiration value is changed e g to 5 days then the alarm will beimmediatelyrecalculatedandappear5daysafterthelastcalibration Notes If the instrument was not calibrated or if the calibration...

Страница 19: ...ration buffers in calibrating order and with the selected resolutions used during calibration The first pH calibration buffer The second pH calibration buffer The third pH calibration buffer The fourt...

Страница 20: ...less than five buffers Calibration Expiration status if disabled or the number of days until the calibration alarm will be displayed or if expired 7 days ago The instrument ID Notes Press GLP to retur...

Страница 21: ...he Lo message will be displayed to alert the user If the log space is full the FULL LOG message will be displayed and no more data will be saved Alongwiththecurrentmeasurement thedate time mVvalue tem...

Страница 22: ...and minutes on the primary LCD and the record number on the secondary LCD The calibration offset on the primary LCD and the oFFS message on the secondary LCD The calibration slope on the primary LCD a...

Страница 23: ...e is displayed on the first LCD line You can skip this message by selecting an undeleted record using the ARROW keys Theinstrumentoptimizestheusageofthememorywhenitreturns tomeasurementmodeafteradelet...

Страница 24: ...decrease the displayed value Press the CFM key to save the modified value or the CAL key to escape without saving Press the ARROW keys to select the next previous parameter CALIBRATION EXPIRATION ALAR...

Страница 25: ...ENT TIME Press the CAL key when the current time is displayed The hour and CFM will start blinking Press the ARROW keys to change the hour Press the RANGE key The minutes and CFM will start blinking P...

Страница 26: ...onfirmed A long beep alerts that the pressed key is not active or a wrong condition is detected while in calibration INSTRUMENT ID Press the CAL key when InId is displayed The instrument ID 0000 to 99...

Страница 27: ...sareference thermometer With the instrument off press and hold down the CFM SETUP keys then power on the instrument The CAL tag will appear and the secondary LCD will show 0 0 C Submerse the temperatu...

Страница 28: ...ion point READY tag will appear and CFM tag will blink PressCFMtoconfirm Theinstrumentreturnstomeasurementmode Note If the reading is not close to the selected calibration point WRONG tag will blink C...

Страница 29: ...strumentoff pressandholddowntheCAL Ckeys then power on the instrument The CAL tag will appear and the secondary LCD will show 0 0 mV Set 0 0 mV on the simulator Whenthereadingisstableandclosetothesele...

Страница 30: ...000 software please see the following instructions SENDING COMMANDS FROM PC It is also possible to remotely control the instrument with any terminal program Use a standard USB cable to connect the ins...

Страница 31: ...ent range pH temperature and mV reading on pH range mV and temperature reading on mV range The answer string contains Meter mode 2 chars 00 pH value 0 001 resolution 01 pH range 0 01 resolution 03 mV...

Страница 32: ...0 status 1 char N new calibrated in last calibration O old from an old calibration warnings during calibration 2 chars 00 no warnings 01 clean electrode 04 clean electrode and check buffer 05 contamin...

Страница 33: ...status 1 char R O U mV reading with sing and decimal point 7 chars the logged time yymmddhhmmss 12 chars the calibration offset with sign and decimal point 7 chars the average of slopes with sign and...

Страница 34: ...ear when rinsed with water Duringtransport tinybubblesofairmayforminsidetheglassbulbaffect ingproperfunctioningoftheelectrode Thesebubblescanberemovedby shakingdown theelectrodeasyouwoulddowithaglasst...

Страница 35: ...glass bulb and the junction should be kept moist and not allowed to dry out Replace the solution in the protective cap with a few drops of HI70300 orHI80300StorageSolutionor initsabsence FillingSolut...

Страница 36: ...074InorganicCleaning Solution for 15 minutes Oil grease Rinse with Hanna Instruments HI7077 or HI8077 Oil and Fat Cleaning Solution IMPORTANT After performing any of the cleaning procedures rinse thee...

Страница 37: ...e in the pH scale a Verify that the electrode is connected b Verify that the shipping cap has been removed c Recalibrate the meter d Make sure the pH sample is in the specified range e Check electroly...

Страница 38: ...discharges are detrimental to a stable pH reading ThepHelectrode slifealsodependsonthetemperature Ifconstantlyused at high temperatures the electrode life is drastically reduced Typical Electrode Life...

Страница 39: ...ttle 500 mL ELECTRODE CLEANING SOLUTIONS HI70000P Electrode Rinse Sachets 20 mL 25 pcs HI7061L General Cleaning Solution 500 mL HI7073L Protein Cleaning Solution 500 mL HI7074L Inorganic Cleaning Solu...

Страница 40: ...alkali Glass body double junction refillable combination pH electrode HI1053P Use emulsions Glass body tripleceramic conicshape refillable combinationpHelectrode HI1131P Use general purpose Glass body...

Страница 41: ...bination platinum ORP electrode Consult the Hanna Instruments General Catalog for more electrodes with BNC and pin connectors EXTENSION CABLE FOR SCREW TYPE ELECTRODES SCREW TO BNC ADAPTER HI7855 1 Ex...

Страница 42: ...plug HI710013 Voltage adapter from 230 VAC to 12 VDC South African plug HI710014 Voltage adapter from 230 VAC to 12 VDC Australian plug HI76404N Electrode holder HI8427 pHandORPelectrodesimulatorwith1...

Страница 43: ...arges 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 senditwithshippingcostsprepaid...

Страница 44: ...44 Printed in ROMANIA MAN2223 06 19 World Headquarters Hanna Instruments Inc Highland Industrial Park 584 Park East Drive Woonsocket RI 02895 USA www hannainst com...

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