Hach 3654 Portable H2/N2 Analyzer manual Manual Data Acquisition

Page 27

3654 Portable H2/N2 Analyzer - Operating Instructions	21 of 66

To end automatic storage, put the instrument into standby (by pressing the POWER key) while it is in normal measurement mode and not while it is in the process of automatically storing data. Switching ON again without holding down the STO button returns the instrument to measurement mode.

Note:

If you accidentally interrupt the automatic data storage by switching off the instrument while it is in the process of storing a value, and you then attempt to download the stored values by the WIN3654 program, you will get a Windows Checksum Error message, and you will not be able to view the measurement data. If this happens, go back to the instrument and manually log one more value (described in “Manual Data Acquisition” ). You can then download your original set of values to your PC.

2.3.2 Manual Data Acquisition

Note:

You cannot store measurement data manually if the instrument has already been set up to store the data automatically.

1) For the first measurement you wish to store, press the STO button once to display a sample number. The default sample number is 000 (for first time access), or the last used memory position where data was stored, incremented by a value of 1.

2) You can increase or decrease this number by pressing the Up/Down Arrow buttons within three seconds.

3) Should you decide at this point, not to store this particular measurement, just wait five seconds and the display returns to measurement mode. You may also exit this routine by pressing the MEAS button.

4) Press STO a second time, within five seconds of the first. The instrument then displays a brief clearing [---]message, followed by the gas concentration measurement value for about three seconds (e.g. 8.56 in the flow diagram)

5) The [---]message is displayed as this measurement value is stored

6) Repeat the above steps to store additional measurements.

If you stored the first value as sample 001, the instrument automatically increases the next storage location, and labels it sample 002. You can increase or decrease this number by pressing the Up/Down Arrow buttons.

Note:

If you label a sample number the same as a previously stored measurement value, the new measurement value overwrites the previously stored value.

Operator Manual

ORBISPHERE

Image 27

Contents Operator Manual Page Product Recycling Information Orbisphere Following only applies to European customers Product DisposalRestriction of Hazardous Substances Board Analog Board Spacer External ConnectorTable of Contents Accessories and Attachments Maintenance and TroubleshootingCalibrations Specifications Part ListsAppendix a Glossary Table of Contents 3654 Portable H2/N2 Analyzer Revision History Safety ConventionsManual Overview About this ManualSafety Precautions Safety RecommendationsService and Repairs Acknowledgements Precautionary LabelsOrbisphere What you have Received InstallationWIN3654 PC Program Installation Sensor InstallationAtmospheric Pressure Equilibrium Instrument PC Connection External Power Supply optionalPurge Gas Connection ConnectionsPin RS232 Signal Use Flow Chamber Installation Installation Completion Check List Dissolved Gas Measurements Flow ChamberOrbisphere Operating Controls Operating InstructionsMeasurement Phase on Select Gas Measurement Phase Measurement ModeTaking Measurements Automatic Data Acquisition Storing Measurements In the InstrumentManual Data Acquisition Storing and Accessing Measurements From a Computer Viewing Stored MeasurementsDownloading Stored Values Altering the Sampling Point Descriptions Copying ValuesSaving Values Clearing Stored Values Printing ValuesTimebase Updating Rate Maximum Samples 10 divisions Monitoring Measurements In Real-TimeAfter Use and Storage Main Menu Basics Options SetupOptions Setup 3654 Portable H2/N2 Analyzer Analyzer PC Connection Reviewing Instrument ConfigurationConfiguring the Instrument Gas Measurement PhaseMeasurement Units Membrane Selection Automatic Data Acquisition Setting Sampling IntervalsCalibration Medium Locking Out the Instrument’s CAL ButtonRolling Average Automatic Shutdown Orbisphere Barometric Pressure Sensor Calibration CalibrationsCalibration Method Time Benefits Drawbacks Reference Sensor CalibrationCalibration Setup Calibration In H2 or N2 at Atmospheric Pressure Calibration In H2 or N2 at Elevated Pressure Calibrating In a Liquid H2 or N2 Solution Model 32311 Flow Meter Accessories and AttachmentsModel 32939 External Power Supply Maintenance Schedule Maintenance and TroubleshootingPower Supply Sensor MaintenanceMembrane Replacement Mounting Dual MembranesRemoving the Membrane Installing the Membrane Orbisphere Place the membrane holding ring on the installation tool tip 1 N2 Purge Gas Purge Gas Cylinder RefillFilling the Purge Gas Cylinder 2 CO2 Purge GasTroubleshooting Instrument Serial TestKeyboard Test Display Test Clock SettingsMeasurements View Analog Voltages ViewContinuous Purge Troubleshooting OperationDiagnostics Messages Program IdentificationSymptom Cause Possible Solution Troubleshooting TableInstrument Specifications SpecificationsSensor Type 31 270 H Sensor SpecificationsPFA Etfe Ectfe Sensor Type 31 272 H 31 570 NSpecifications 3654 Portable H2/N2 Analyzer Analyzer Spare Parts Instrument ConfigurationsTC Sensor and Parts on Configured System Part ListsSensor Spare Parts Unit Appendix a GlossaryCommon Units Terms and DefinitionsGlossary 3654 Portable H2/N2 Analyzer Tables and Illustrations AnnexAnnex 3654 Portable H2/N2 Analyzer User Notes