Hach 3650 manual Calibration In Line

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3650 Portable O2 Analyzer - Calibrations

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4.2.2 Calibration In Line

The in line calibration procedure can be used to calibrate the sensor directly in line, against a liquid sample with a known dissolved oxygen concentration. To perform this type of calibration, the instrument must be set for calibration In line. Switch on the instrument, if necessary, and wait a minute or so for the displayed measurement to settle. Expose the sensor to a liquid sample with a known gas concentration.

1) Press the CAL button. Remember, this button may have been locked out to prevent an accidental reset (see “Locking Out the Instrument’s CAL Button” on page 28 for details).

2) A brief clearing [---]message appears.

3) Press CAL again within a 3 second period.

4) A measurement will flash on the LCD, showing the oxygen concentration of the calibration sample.

5) Assuming you know the gas content to be a certain value, you can adjust the displayed value with the Up/Down Arrow keys.

6) When the reading is adjusted to the known concentration, press CAL again.

7) The instrument displays CAL and returns to the measurement mode.

Operator Manual

ORBISPHERE

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Contents
Operator Manual Page Product Recycling Information Orbisphere Following only applies to European customers Product DisposalMarking Restriction of Hazardous SubstancesTable of Contents Part Lists Accessories and Attachments Maintenance and TroubleshootingSpecifications CalibrationsRevision History Safety Conventions Safety PrecautionsManual Overview About this ManualService and Repairs Safety RecommendationsAcknowledgements Precautionary LabelsOrbisphere Installation Flow Chamber Installation Sensor InstallationConnections WinLog97 PC Program InstallationExternal Power optional Sample Tube Adapter optionalInstrument PC Connection Electrochemical Sensor Installation Completion Check ListInstrument Clock Setting BatteriesFlow Chamber Storage When not UsedOperating Controls Operating InformationOperating Information 3650 Portable O2 Analyzer Preconditioning Sensor Taking MeasurementsAutomatic Data Acquisition Storing Measurements In the InstrumentManual Data Acquisition Storing and Accessing Measurements From the PC Viewing Stored MeasurementsDownloading Stored Values Copying Values Altering the Sampling Point DescriptionsSaving Values Printing ValuesClearing Stored Values Timebase Updating Rate Maximum Samples 10 divisions Monitoring Measurements In Real-TimeOrbisphere Main Menu Basics Options SetupWinlog97 Export Menu O2 Analyzer PC Connection Reviewing Instrument ConfigurationConfiguring the Instrument Automatic Data Acquisition Setting Sampling IntervalsMembrane Selection Select from the PC Selecting Type of CalibrationLocking Out the Instrument’s CAL Button Sensor Calibration Range CheckingEntering a Span Gas Value Change from the PC Dual Use model 3650/113 onlyOrbisphere Pressure Calibration CalibrationsCalibration In a Span Gas Sensor CalibrationCalibration In Line Calibration In Air Calibration Range CheckingAccessories and Attachments Accessories and Attachments 3650 Portable O2 Analyzer Sensor Maintenance and TroubleshootingMaintenance Instrument BatteriesTroubleshooting Serial TestKeyboard Test Display Test Clock SettingsMeasurements View Analog Voltages ViewInstrument Display Options SpecificationsSystem Specifications General Technical DataTheory of Operation Accessories Part ListsInstrument Spare Parts Appendix a Glossary Common UnitsTerms and Definitions Glossary 3650 Portable O2 Analyzer Tables and Illustrations AnnexAnnex 3650 Portable O2 Analyzer User Notes
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