EUTECH INSTRUMENTS DO 700 Скачать руководство пользователя страница 28 | Manualshive

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EUTECH INSTRUMENTS DO 700 Скачать руководство пользователя страница 28

PROBLEM CAUSE

SOLUTION

CAL

% calibration value is not
acceptable.
Electrode is disconnected
or failing.

Check electrode connections.
Check that correct DO unit is
selected & repeat cal procedure.
Service electrode.
Reset meter.
Replace electrode.

CAL

ppm or mg/L calibration is
attempted when the factory
calibrated absolute value is
below 2.00

Use concentration calibration
solution higher than 2.00.
Check electrode connections.
Check that correct DO unit is
selected & repeat cal procedure.
Service electrode.
Reset meter.
Replace electrode.

Slow
response or
unstable
readings

External noise pickup or
induction caused by
nearby electric motor

Insufficient electrolyte in
probe

Air bubbles near sensor

Dirty or damaged probe

Probe not deep enough in
sample

Broken probe

Remove or switch off interfering
device

Fill probe with electrolyte & / or
replace pre-assembled cap

Stir or tap probe to remove
bubbles, reduce stirring

Clean the probe and re-calibrate

Submerse sensor cap into sample

Replace probe or membrane

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Содержание DO 700

Страница 1: ...Instruction Manual DO 700 Dissolved Oxygen ºC ºF Bench Meter Technology Made Easy Part of Thermo Fisher Scientific 68X541703 Rev 2 Sep 2010 ...

Страница 2: ......

Страница 3: ... CAL Calibration 9 5 2 2 0 ELE Electrode Information 10 5 3 3 0 ConF Configuration 10 5 4 3 1 rdY Ready Stability Indicator Auto Hold 10 5 5 3 2 ºC ºF Celsius or Fahrenheit 10 5 6 3 3 dPr Barometric Pressure Adjustment 11 5 7 3 4 SALt Salinity Adjustment 11 5 8 3 5 OFS Offset Adjustment from mode 11 5 9 3 5 Unit Unit Adjustment from concentration mode 12 5 10 4 0 rSt Reset 12 5 11 5 0 CLr Clear St...

Страница 4: ...9 REPLACEMENTS AND ACCESSORIES 22 10 TROUBLESHOOTING GUIDE 23 11 SPECIFICATIONS 25 12 WARRANTY 26 13 RETURN OF ITEMS 27 ...

Страница 5: ...conserve space The DO 700 measures Dissolved Oxygen in saturation or concentration mg L or ppm with temperature ºC or ºF Each meter includes a convenient slide out card for quick reference Also included is an electrode arm and metal bracket which can be easily attached to the left or right side of the meter according to your preference We take great pride in every instrument we manufacture and hop...

Страница 6: ...ration during DO calibration modes Press and hold for 5 seconds to enter SETUP mode Toggles between measurement and calibration modes In SETUP mode returns user to the measurement mode Confirms calibration values in CAL mode Confirms selections in SETUP mode View recalled values in memory mode S Increase value Scroll up in SETUP CAL modes MI Memory Insert stores values into memory MR Memory Recall...

Страница 7: ...2 2 LCD Annunciators 2 3 Meter Connections DC Power supply ATC Temperature connection of Dissolved Oxygen electrode DO BNC connection of Dissolved Oxygen electrode 3 ...

Страница 8: ...e replacement and fast conditioning The electrode is light weight with a 12 mm body diameter and a 16 mm tip diameter from at the detachable Noryl cap The compact sensing area reduces air entrapment resulting in quick accurate and stable readings Provide simple stirring for best results ideally achieve a minimum water flow rate of 2 inch second on the membrane The probe is not recommended for samp...

Страница 9: ...r and 0 using zero oxygen solution When 100 or 0 calibration is performed the concentration value is adjusted accordingly Therefore it is not necessary to calibrate the concentration mode If calibrating for 0 oxygen note that the meter will take several minutes to reach 0 saturation value and constant stirring is not required The following table lists calibration values in saturation calibration m...

Страница 10: ... clear all calibration data See Section 5 10 Reset 4 1 Temperature Calibration For best DO accuracy ensure that the temperature is accurate The thermistor sensor used for automatic temperature compensation and measurement is accurate and stable so frequent calibration isn t required Temperature calibration is recommended upon probe replacement whenever the temperature reading is suspect or if matc...

Страница 11: ...libration 1 Rinse the probe well with clean water do not dry 2 Press to select saturation 3 Hold the probe in the air with the tip facing downwards Wait for the reading to stabilize 4 Press The CAL indicator will blink and secondary display will indicate the calibration point 100 0 5 Press to confirm the calibration The primary display will blink briefly before calibrating to 100 0 6 Press to retu...

Страница 12: ...orresponding mg L ppm concentration value Therefore additional mg L ppm calibration isn t required in most circumstances If desired you can perform a calibration adjustment in mg L ppm without affecting your saturation calibration value 1 Rinse the probe well with clean water do not dry 2 Press to select concentration mg L ppm 3 Dip the probe into a sample of known oxygen concentration i e determi...

Страница 13: ...d from the saturation mode and the other from the mg L or ppm concentration mode First select the appropriate measurement mode you wish to adjust by pressing until the desired units are displayed During measurement press and hold for 5 seconds to enter SETUP mode of the parameter being measured Press or to change programs or change options Press to select the program or confirm selection Press to ...

Страница 14: ... displays from 0 5 to 1 999 Press to view mV output for 100 HI Press to view mV output for 0 LO Press to view Offset OFS saturation mode only 5 3 3 0 ConF Configuration Press to access set up programs 3 1 thru 3 5 5 4 3 1 rdY Ready Stability Indicator Auto Hold Press Press or to choose READY On READY OFF or Auto HOLd Press to confirm 5 5 3 2 ºC ºF Celsius or Fahrenheit Press Press or to select ºC ...

Страница 15: ... ppt 100 ppm salinity Press to confirm 5 8 3 5 OFS Offset Adjustment from mode Use this feature to offset the meter s value to another DO meter Using the saturation mode observe the reading a sample solution after it has stabilized Similarly observe the reading of the same sample using another DO meter as a reference The probe of the reference meter should be immersed in the same sample at the sam...

Страница 16: ...nits Press to confirm 5 10 4 0 rSt Reset Press Press or to select Yes Reset or No Cancel If Yes press or to select Cal calibration reset only or FCt complete reset to factory default settings Press to confirm 5 11 5 0 CLr Clear Stored Memory Press Press or to select Yes Erase memory or No Press to confirm 12 ...

Страница 17: ... 5 7 Salinity Adjustment Press to select the desired measurement mode Percentage Saturation and Temp º C or º F Concentration mg L or ppm and Temp º C or º F Follow these general rules when taking measurements Keep the membrane free from contact with solid objects Provide stirring of your solution this helps to overcome oxygen consumption of the probe and prevents air bubble entrapment Do not subm...

Страница 18: ... 700 can retain up to 100 data points into memory for later retrieval 1 In the measurement mode press to insert the measured value into memory The stored memory location value StO is briefly displayed 2 To recall data from memory press The location of the most recent stored data is displayed first Press or to select the location of the desired data then press to accept 3 Press to return to the sto...

Страница 19: ... the DO in the sample is consumed by the cathode it is essential to have flow past the membrane of the probe to prevent the occurrence of false readings The probe uses very little oxygen for its measurement This enables it to function correctly with liquid movement as low as 2 inch sec across membrane The permeability of the membrane to oxygen varies greatly with temperature Therefore compensation...

Страница 20: ...robe sensing tip 2 Rinse the probe under running water 3 Mount the nozzle tip onto the syringe provided Fill the syringe with the refill solution through the tip of the plastic bottle 4 Hold the probe upside down Insert the nozzle tip into one of the 4 holes surrounding the silver cathode Inject the fill solution into the probe body until solution leaks out from the fill hole approximately 5 mL 5 ...

Страница 21: ... in your probe s cap will deplete on usage and will need to be replaced periodically The replacement electrolyte solution included with your probe comes premixed and ready to use To order more electrolyte solution see Section 9 Replacements and Accessories 17 ...

Страница 22: ...n be held by water depends on 3 factors 1 TEMPERATURE DO increases with decreasing temperature colder water holds more oxygen 2 SALINITY DO increases with decreasing salinity freshwater holds more oxygen than saltwater does 3 ATMOSPHERIC PRESSURE DO decreases with decreasing atmospheric pressure amount of DO absorbed in water decreases as altitude increases Solubility of oxygen in water contact wi...

Страница 23: ... 2 H2O 4 e Æ 4 OH Since all oxygen entering the probe is chemically consumed the partial pressure of oxygen in the electrolyte is zero Therefore a partial pressure gradient exists across the membrane and the rate at which oxygen enters the probe is a function of the partial pressure of oxygen in the gas or in liquid being measured When a probe is placed in air saturated water the current it produc...

Страница 24: ...Applications Oxygen is essential for fish invertebrate plant and aerobic bacteria respiration DO levels below 3 ppm are stressful to most aquatic organisms Levels below 2 or 1 ppm will not support fish Fish growth and activity usually require 5 to 6 ppm of DO an important consideration for Aqua culture industry Low DO indicates a demand on the oxygen of the system Natural organic material such as ...

Страница 25: ...en in the water DO is consumed in the oxidation reduction reactions of introduced chemical compounds such as nitrate NO3 1 and ammonia NH4 1 sulfate SO4 2 and sulfite SO3 2 and ferrous Fe2 and ferric Fe3 ions These are important consideration for water and wastewater treatment industry ...

Страница 26: ...5 00 DO ATC probe 1 m cable 2 Pre assembled caps electrolyte plastic syringe DO6HANDY 01X233913 35642 50 DO ATC probe 3 m cable 2 Pre assembled caps electrolyte plastic syringe DO6HANDY3M 01X233916 35462 52 Pre assembled cap 01X241608 Pre assembled cap 10 mL electrolyte plastic syringe 01X241609 35642 55 SMPS 100 240 VAC 9V 6W power adapter 60X030130 35615 07 Zero Oxygen Solution 500 mL 00653 00 D...

Страница 27: ...ter recalibrate Meter not responding to key press Manual HOLD or Auto HOLD is active Worn keypad Press to deactivate manual HOLD See Section 5 4 Auto Hold to disable Auto Hold feature if enabled Contact Technical Service Invalid key Button is not functional in the current operation mode Press alternate key Select valid key depending on current mode Secondary display continually shows 0 and 100 dur...

Страница 28: ...lectrode connections Check that correct DO unit is selected repeat cal procedure Service electrode Reset meter Replace electrode Slow response or unstable readings External noise pickup or induction caused by nearby electric motor Insufficient electrolyte in probe Air bubbles near sensor Dirty or damaged probe Probe not deep enough in sample Broken probe Remove or switch off interfering device Fil...

Страница 29: ...racy Calibration 0 0 to 50 0 ºC 32 0 to 122 0 ºF 0 1 ºC 0 1 ºF 0 5ºC 0 9ºF Offset in 0 1 º increments Offset range 5 ºC 9 ºF Salinity Correction Range Resolution Method 0 0 to 50 0 ppt 0 1 ppt Automatic correction after manual input Pressure Correction Range Resolution Method 450 to 825 mmHg 0 6 to 1 1 bar 1 mm Hg 0 1 bar Automatic correction after manual input Probe DO Temp Galvanic Thermistor Av...

Страница 30: ...the designated period please return freight prepaid and correction will be made without charge Eutech Instruments Oakton Instruments will determine if the product problem is due to deviations or customer misuse Out of warranty products will be repaired on a charged basis The warranty on your instrument shall not apply to defects resulting from Improper or inadequate maintenance by customer Unautho...

Страница 31: ...reason the items are to be returned For your protection items must be carefully packed to prevent damage in shipment and insured against possible damage or loss Eutech Instruments will not be responsible for damage resulting from careless or insufficient packing A restocking charge will be made on all unauthorized returns NOTE Eutech Instruments Pte Ltd Oakton Instruments reserve the right to make...

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Страница 35: ...NOTES ...

Страница 36: ...nts 625 E Bunker Court Vernon Hills IL 60061 USA Tel 1 888 462 5866 Fax 1 847 247 2984 info 4oakton com www 4oakton com Eutech Instruments Pte Ltd Blk 55 Ayer Rajah Crescent 04 16 24 Singapore 139949 Tel 65 6778 6876 Fax 65 6773 0836 eutech thermofisher com www eutechinst com Distributed by Part of Thermo Fisher Scientific ...

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