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32 

Symptoms

Problems

Solution

Readings fluctuate up and 
down (noise).

DO: DO probe electrolyte 
contains entrapped gas.

Remove cap. Refill, tap and 
reinstall.

The display shows DO 
reading blinking.

Out of range in DO scale.

Verify area of cathode is free of 
bubbles inside cap. Verify solution 
movement past membrane. Remove 
cap, inspect and clean if necessary. 
Install new cap, fresh electrolyte 
with no bubbles, permit longer 
polarization. Stir or increase flow 
rate.

The meter does not 
measure temperature. “‑‑
‑‑” is displayed on second 
LCD line.

Broken temperature sensor.  Replace the probe.

At startup the meter 
displays all LCD tags 
permanently.

One of the keys is stuck.

Check the keyboard or contact your 
local Hanna Instruments Office.

CAL “Prod” message at 
startup.

Instrument was not factory 
calibrated or lost factory 
calibration.

Contact your local Hanna 
Instruments Office for help.

TROUBLESHOOTING GUIDE

MAINTENANCE

Содержание edge DO

Страница 1: ...DO INSTRUCTION MANUAL ...

Страница 2: ... the instrument as well as a precise idea of its versatility If you need additional technical information do not hesitate to e mail us at tech hannainst com or view our worldwide contact list at www hannainst com Dear Customer All rights are reserved Reproduction in whole or in part is prohibited without the written consent of the copyright owner Hanna Instruments Inc Woonsocket Rhode Island 02895...

Страница 3: ...ode Probe Connections General Setup Logging Function Viewing Logged Data PC Storage Interface Operational Guide Dissolved Oxygen Setup Dissolved Oxygen Probe Diagram Dissolved Oxygen Meter Configuration Dissolved Oxygen Calibration Dissolved Oxygen Calibration Messages Dissolved Oxygen GLP Information Dissolved Oxygen Measurements Maintenance Dissolved Oxygen Probe Maintenance Troubleshooting Guid...

Страница 4: ...or membrane caps Electrode protective cap Note Save all packing material until you are sure that the instrument works correctly Any defective item must be returned in its original packing SAFETY MEASURES Before using this product make sure that it is entirely suitable for your specific application and for the environment in which it is used Operation of this instrument may cause interference to ot...

Страница 5: ...configuration calibration measurement data logging and transfer of data to a USB thumb drive or computer Every feature and measurement detail is designed to give you an edge in measurement technology edge DO is versatile in many ways The slim meter and probe can be used as a portable device using its rechargeable battery or used in its bench or wall cradles that also power the meter as a line powe...

Страница 6: ...lay LCD 2 Capacitive Touch Keypad 3 3 mm jack input for edge DO digital probes 4 Top mounted ON OFF button 5 Micro USB device connection for power or PC interface 6 Standard USB host connection for data transfer to a USB thumb drive ...

Страница 7: ...sor recognition Store calibration specific data from the last calibration Are built with materials suitable for use in chemical analysis Have integrated temperature measurement Incorporate a 3 mm jack termination Unique serial ID in every probe for traceability DIAGRAM PROBE DIAGRAM ...

Страница 8: ... SETUP CLR Used to enter exit SETUP mode During calibration used to clear previous calibration data In log RCL used to clear log records 5 Used to scroll through SETUP menu Used to change selection when modifying a parameter in SETUP 6 RCL Recall Used to view logged records or view log memory used 7 LOG Used to log data by manual log on demand or manual log on stability or to start stop interval l...

Страница 9: ...rement 10 Temperature units 11 Temp Compensation status 12 Measurement line 13 Measurement units 14 Stability Indicator The third line of the LCD 7 is a dedicated message line During measurement the user may use the keys to select desired message Options include date time calibration data battery charge or no message If a measurement error or log status change occurs during measurement the third l...

Страница 10: ...e meter 2 Decide how the meter will be used and set up the wall or bench cradle in a clean area near line power 3 Turn edge DO on using the ON OFF button located on the top of the meter 4 Plug in the probe required for measurement 5 SETUP the measurement parameters required for the measurement you will be making 6 Calibrate the sensor probe You are now ready for measurements Bench Cradle Setup Ins...

Страница 11: ...clips Connect the power adapter cable to the rear socket of the bench cradle Connect the other end to the power adapter and plug into line power Verify the battery icon indicates charging Wall Cradle Setup Choose suitable wall location Use 2 5 mm or US 3 bit Fasten the wall cradle using the provided screws Snap cover over screw heads SETUP INSTALLATION ...

Страница 12: ...Verify the battery icon indicates charging Power Connection Alternatively to using the cradle for power edge DO can be powered by micro USB socket at the top Plug the 5 VDC adapter into the power supply socket or by connecting directly to a PC Note edge DO is supplied with a rechargeable battery inside which provides about 8 hours of continuous use Whenever edge DO is connected to the power adapte...

Страница 13: ...he probe inputlocatedonthebottomofedge DO Make sure the probe is completely connected If the probe is recognized CONNECTING message is displayed along with sensor model If the probe is not connected or not recognized NO PROBE message is displayed SETUP INSTALLATION ...

Страница 14: ...ays Probe Specific Parameters that are specific to a measurement type are inserted here in the SETUP list GENERAL SETUP The following General Setup options are displayed regardless of the sensor being used These settings remain when switching to another probe type or when no probe is attached Options are tabulated in the table below with choices and default values Options are accessed by pressing ...

Страница 15: ...hen log errors are present Permits formatting the flash drive On or Off OFF Message Transition User may choose how messages are displayed on third LCD line of display Word scroll messages or letter scroll messages Letter scroll messages Reset Config To Default Press the CAL MODIFY key and GLP CFM key when prompted to reset parameters Instrument Firmware Probe Firmware Displays firmware version of ...

Страница 16: ...rement type New records made on different days are stored in the same Manual lot Manual Stability log on demand A log on demand that is made each time LOG key is pressed and the stability criteria is reached Stability criteria may be set to Fast Medium or Accurate settings In Setup mode choose log parameter press CAL MODIFY key then use the RANGE u key to select between Interval Manual or Stabilit...

Страница 17: ... Interval logging session The LOG STOPPED message will be displayed for a few seconds If a sensor failure occurs during interval logging the message OUT OF SPEC will alternate with logging information Manual Logging Select Manual in the SETUP menu To initiate a Manual log press the LOG key while the instrument is in measurement mode The PLEASE WAIT screen will be displayed briefly followed by a sc...

Страница 18: ...LOG key again When the stability selected criteria has been met a SAVED message will be displayed followed by a screen indicating how much log space is available The LOG tag will be displayed on all 4 screens PLEASE WAIT WAITING SAVED with the log record number FREE with the number of free spaces available VIEWING LOGGED DATA All log records stored on edge DO may be viewed on the meter by pressing...

Страница 19: ...ete Press SETUP CLR key The instrument will display CLEAR MANUAL for Manual Records CLEAR STAB for Stability Records For Interval lots the message CLEAR followed by the selected lot will be displayed with CFM tag blinking Press the keys to select a different lot Press GLP CFM key The instrument will display PLEASE WAIT CLEAR DONE is displayed for a few seconds after the selected Interval lot is de...

Страница 20: ...ed The total number of lots that can be saved is 100 If some are deleted for example 1 50 fifty additional logs may be stored These will be numbered 101 150 Thelotsareallocatedsuccessively providedavailablememoryspace until999isreached After this it is necessary to delete all the LOT logs to start over the numbering Delete All All logs may be deleted in a single clear This function will delete all...

Страница 21: ...d by EXPORT Press GLP CFM key to export the selected record or lot If GLP CFM key is not pressed in 10 seconds the USB host will become inactive The meter will display the percentage of export The export percentage should go to 100 Remove USB flash drive Iftheselectedfileisalreadysavedontheflashdrive edge DO willaskfor confirmation of overwriting the existing file The message OVERWRITE and CFM tag...

Страница 22: ...program Note Western Europe ISO 88859 1 character set and English language are suggested settings Other files may be visible depending upon computer settings All files stored will appear in this folder Adjust Font or column width appropriately Interval logs are designated as DO Lots ie DOLOT001 DOLOT002 DOLOT003 The Manual Lots are DOLOTMAN The Stability Lots are DOLOTSTAB All stability logs regar...

Страница 23: ... care during servicing and use The HI764080 contains a glass insulator Do not drop or handle carelessly Probes from Hanna Instruments are shipped dry 1 Carefully remove the cardboard shipping tube used to protect the probe during shipping Save the tube should the probe be stored dry again 2 Open membrane package and remove one O Ring and one membrane cap 3 Rinse the membrane cap with a small amoun...

Страница 24: ...ing is not necessary press any key to enter measurement mode OPERATIONAL GUIDE The probe is polarized with a fixed voltage of approximately 800 mV between the cathode and anode Probe polarization is essential for stable measurements With the probe properly polarized oxygen is continually consumed as it passes through gas permeable PTFE membrane If polarization is interrupted the electrolyte soluti...

Страница 25: ...e calibration and concentration measurement 500 400 300 200 100 0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 2200 2300 2400 2500 2600 2700 2800 2900 3000 3100 3200 3300 3400 3500 3600 3700 3800 3900 4000 m 0 Salinity g L Dissolved oxygen solubility decreases if water contains salts Selecting this factor as to be close to your known salt level wi...

Страница 26: ...ygen in water is also influenced by the amount of salt the water contains Seawater typically has a salinity of 35 g L and the oxygen solubility is 18 less compared to fresh water at 25 C By entering the approximate salinity value the calibration and subsequent concentration measurement will be compensated to display the correct oxygen concentration A 18 error would result if the salinity value is ...

Страница 27: ...inue with calibration after confirming the first point The meter will display WAIT and 0 0 will be displayed in lower right corner Submerse the probe membrane and temperature sensor into the beaker containing HI7040 Zero Oxygen solution and stir gently for 2 3 minutes the reading will go down When the reading is stable and stops decreasing CFM tag starts blinking Press GLP CFM key to confirm the 0...

Страница 28: ...and Salinity factors time and date of the last calibration the expired calibration information and the probe serial number This information is also included with all logged data Last DO Calibration Data The last DO calibration data is stored automatically after a successful calibration To view the DO calibration data press GLP CFM key when the instrument is in measurement mode The instrument will ...

Страница 29: ...he probe serial number together with the current reading DISSOLVED OXYGEN MEASUREMENTS Make sure that the probe is polarized calibrated and the protective cap has been removed Rinse probe Submerse the probe in the sample to be tested make sure the temperature probe is also immersed Allow time for the reading to stabilize Note The sample should be stirred when taking a reading The Dissolved Oxygen ...

Страница 30: ...ence between the temperature at which the probe was stored and the sample s temperature is greater the time will be longer If the DO temperature exceeds the limits of the probe the message PROBE OUT OF SPEC will scroll on the third LCD line and LCD will display dashes If the temperature exceeds the probe specification 50 ºC then 50 ºC will blink on the display If interval logging the message OUT O...

Страница 31: ...platinum cathode DO Probe Diagram page 24 should always be bright and untarnished If it is tarnished or stained the cathode should be cleaned You can use a clean lint free cardboard or cloth Rub the cathode very gently side to side 4 5 times This will be enough to polish and remove any stains without damaging the platinum tip Afterwards rinse the probe with deionized or distilled water and install...

Страница 32: ...y Install new cap fresh electrolyte with no bubbles permit longer polarization Stir or increase flow rate The meter does not measure temperature is displayed on second LCD line Broken temperature sensor Replace the probe At startup the meter displays all LCD tags permanently One of the keys is stuck Check the keyboard or contact your local Hanna Instruments Office CAL Prod message at startup Instr...

Страница 33: ...ation 500 to 4 000 m 1640 to 13120 with 100 m 328 resolution Probe HI764080 Log Feature Up to 1000 records organized in Manual Log on Demand Max 200 logs Manual Log on Stability Max 200 logs Interval Logging 100 lots Max 600 logs lot Temperature Range 20 0 to 120 0 ºC 4 0 to 248 0 F Resolution 0 1 ºC 0 1 ºF Accuracy 0 5 ºC 0 9 ºF Additional Specifications PC Interface Micro USB Storage Interface U...

Страница 34: ...0 Spare DO probe HI764080A P 5 spare membranes Other Accessories HI75110 220U Voltage adapter from 115 VAC to 5 VDC USA plug HI75110 220E Voltage adapter from 230 VAC to 5 VDC European plug HI76404W Electrode holder HI2000WCW Wall cradle HI2000BCW Bench cradle HI920015 Micro USB cable MANEDGEDO 10 16 ...

Страница 35: ...dents misuse tampering or lack of prescribed maintenance is not covered If service is required contact your local Hanna Instruments Office If under war ranty 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 obta...

Страница 36: ...na Instruments Inc Highland Industrial Park 584 Park East Drive Woonsocket RI 02895 USA www hannainst com Local Office Hanna Instruments USA 270 George Washington Highway Smithfield RI 02917 Phone 800 426 6287 Fax 401 765 7575 e mail tech hannainst com ...

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