Hach 3654 Portable H2/N2 Analyzer manual Troubleshooting Instrument, Serial Test, Keyboard Test

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50 of 66	Maintenance and Troubleshooting - 3654 Portable H2/N2 Analyzer

6.5Troubleshooting - Instrument

If your analyzer is behaving strangely (failing to calibrate, giving inappropriate measurement values, etc.) and you have attempted to rectify the problem by servicing the sensor (for instructions, see “Sensor Maintenance” on page 43) but to no avail, you may wish to use the WIN3654 Troubleshooting menu to make sure that the instrument is configured correctly for your application, and is in good working order.

The instrument must be connected to your PC and placed in measurement mode to perform these tests.

6.5.1 Serial Test

Normally, the instrument will inform you of a disconnected RS-232 (serial) link when appropriate. However, you can confirm a good connection using the Troubleshooting, Serial Link Test by echoing a test message via the instrument.

Enter text characters in the Text to be sent box, then click Send. If the serial link is operating correctly, the exact same text will be displayed back from the instrument in the Echo box.

Any difference in text indicates a possible problem with the serial communications.

Choose Cancel to exit from this test box.

6.5.2 Keyboard Test

The Troubleshooting, Keyboard Test will reveal whether all the analyzer buttons are functioning correctly.

Press any one of the instrument's buttons (except the on/off button) for a full second or more. The appropriate square on-screen should darken (as illustrated for the Down Arrow button).

Choose Cancel to exit from this test box.

ORBISPHERE

Operator Manual

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Contents Operator Manual Page Product Recycling Information Orbisphere Product Disposal Following only applies to European customersBoard Analog Board Spacer External Connector Restriction of Hazardous SubstancesTable of Contents Calibrations Accessories and AttachmentsMaintenance and Troubleshooting Appendix a Glossary SpecificationsPart Lists Table of Contents 3654 Portable H2/N2 Analyzer Safety Conventions Manual OverviewAbout this Manual Revision HistoryService and Repairs Safety PrecautionsSafety Recommendations Precautionary Labels AcknowledgementsOrbisphere Installation What you have ReceivedAtmospheric Pressure Equilibrium WIN3654 PC Program InstallationSensor Installation External Power Supply optional Purge Gas ConnectionConnections Instrument PC ConnectionPin RS232 Signal Use Flow Chamber Installation Installation Completion Check List Flow Chamber Dissolved Gas MeasurementsOrbisphere Operating Instructions Operating ControlsMeasurement Phase on Taking Measurements Select Gas Measurement PhaseMeasurement Mode Storing Measurements In the Instrument Automatic Data AcquisitionManual Data Acquisition Downloading Stored Values Storing and Accessing Measurements From a ComputerViewing Stored Measurements Saving Values Altering the Sampling Point DescriptionsCopying Values Printing Values Clearing Stored ValuesMonitoring Measurements In Real-Time Timebase Updating Rate Maximum Samples 10 divisionsAfter Use and Storage Options Setup Main Menu BasicsOptions Setup 3654 Portable H2/N2 Analyzer Reviewing Instrument Configuration Configuring the InstrumentGas Measurement Phase Analyzer PC ConnectionMeasurement Units Automatic Data Acquisition Setting Sampling Intervals Membrane SelectionRolling Average Calibration MediumLocking Out the Instrument’s CAL Button Automatic Shutdown Orbisphere Calibrations Barometric Pressure Sensor CalibrationSensor Calibration Calibration Method Time Benefits Drawbacks ReferenceCalibration 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 Accessories and Attachments Model 32311 Flow MeterModel 32939 External Power Supply Maintenance and Troubleshooting Power SupplySensor Maintenance Maintenance ScheduleRemoving the Membrane Membrane ReplacementMounting Dual Membranes Installing the Membrane Orbisphere Place the membrane holding ring on the installation tool tip Purge Gas Cylinder Refill 1 N2 Purge Gas2 CO2 Purge Gas Filling the Purge Gas CylinderKeyboard Test Troubleshooting InstrumentSerial Test Clock Settings Display TestAnalog Voltages View Measurements ViewTroubleshooting Operation Diagnostics MessagesProgram Identification Continuous PurgeTroubleshooting Table Symptom Cause Possible SolutionSpecifications Instrument SpecificationsSensor Specifications Sensor Type 31 270 HSensor Type 31 272 H 31 570 N PFA Etfe EctfeSpecifications 3654 Portable H2/N2 Analyzer Instrument Configurations TC Sensor and Parts on Configured SystemPart Lists Analyzer Spare PartsSensor Spare Parts Appendix a Glossary Common UnitsTerms and Definitions UnitGlossary 3654 Portable H2/N2 Analyzer Annex Tables and IllustrationsAnnex 3654 Portable H2/N2 Analyzer User Notes