Ysi 5239 Dissolved Oxygen Probe Bedienungsanleitung

YSI Model 5239DissolvedOxygen ProbeInstructionManual

6INTERFERENCESHydrogen sulfide, sulfur dioxide, halogens, carbon monoxide,chlorine, nitric oxide, and nitrous oxide can cause the probe togive erroneo

7PRINCIPLES OF OPERATIONTHE CLARK OXYGEN SENSORThe 5239 probe is a Clark type polarographic (voltammetric)dissolved oxygen sensor. The sensor is made

8anode/reference electrode which completes the overallelectrolytic reaction in the chloride medium (KCl electrolyte)behind the membrane. These reactio

9(an insoluble solid and poor conductor of electricity)accumulates at the anode, it begins to block the passage ofcurrent in the electrolytic cell. Th

10MAINTENANCE AND TROUBLESHOOTINGMEMBRANE CAP LIFEIf the probe is properly maintained, one membrane cap shouldlast two to four weeks depending on how

11ELECTRODE CLEANINGIt is always a good practice to keep the probe in goodoperating condition.Silver AnodeAfter extended use, a thick layer of AgCl bu

12Stick the disc to the sanding tool, then wet sand the gold witha twisting motion about 3 times or until all silver deposits areremoved and the gold

13Symptoms ActionsDoes not holdcalibration• Allow sufficient time for temperature andoxygen stabilization before calibration• Check for water droplets

14WARRANTY AND REPAIRYSI Model 5239 Dissolved Oxygen Probes are warranted for one year fromdate of purchase by the end user against defects in materia

15YSI Authorized Service CentersFor the nearest authroized service center contact:YSI Technical Support • 1725 Brannum Lane • Yellow Springs, OH • 45

16CLEANING INSTRUCTIONSNOTE: Before they can be serviced, equipment exposed tobiological, radioactive, or toxic materials must be cleanedand disinfect

173. If exposure has occurred, the customer must certify thatdecontamination has been accomplished and that noradioactivity is detectable by survey eq

18Cleaning CertificateOrganization ________________________________Department _________________________________Address _______________________________

1725 Brannum LaneYellow Springs, Ohio 45387 USA 052395 - Web937 767-7241 • 800 765-4974 A52395BFax 937 767-9353 September [email protected] •

iTable of ContentsINTRODUCTION... 1PROBE CONFIGURATION...

iiWARRANTY AND REPAIR... 14CLEANING INSTRUCTIONS...

1INTRODUCTIONThe YSI Model 5239 probe is used for measuring dissolvedoxygen in the field. It is the first field probe that features capmembranes for e

2• DO range: 0 to 200 % air saturation or 0 to 20 mg/L.• DO accuracy: ±2 % or ±0.2 mg/L whichever is greater.• DO response time: 30 sec for 95% of

35. Tap the bottom of the membrane cap with your finger afew times (don’t touch the membrane) to shake looseany trapped air bubbles.6. Screw the mem

4titration. Choose the one which best fits your application.Calibration in air is the simplest and most accurate method ofcalibration.• For air cali

53. Check the membrane to make sure there are no waterbeads attached to it. Wipe to remove the water beadswith a soft tissue if necessary. NOTE: Make