Hach 3654 Portable H2/N2 Analyzer manual Installation Completion Check List

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Installation - 3654 Portable H2/N2 Analyzer

 

 

1.8Installation Completion Check List

1.8.1Power

The instrument is designed to work on battery power or an external power supply.

If battery power should drop, a [LO BAT] warning appears in the instrument LCD's top left corner, and they should be replaced.

If using an external power supply, ensure that this is clean, otherwise it may result in unstable measurements.

1.8.2 Check the Purge Gas Supply

It is critical that the TC sensor has a supply of purge gas before operating the system. The TC sensor, when exposed to a liquid sample, could be damaged if the instrument purge gas cylinder is empty. At the same time, it is also critical that the instrument has a power supply to ensure the purge gas is supplied to the sensor on a regular basis. The system purges the sensor for 4 seconds every 20 seconds during normal measurement mode, and every 17 minutes during standby mode.

A small, pressurized cylinder at the bottom of the instrument supplies purge gas to the sensor. The purge gas required is:

•N2 purge for H2 measurements.

•CO2 purge for N2 or H2 measurements.

Verify that the purge gas is flowing at more than four bubbles during the purge cycle, by placing the purge gas exit tubing into water.

Note:

You must supply power constantly to the instrument, since it purges the sensor continuously while power is on. When you put the instrument in standby, it still maintains the purge gas supply to the sensor. Thus, make certain to supply battery or optional external DC power constantly if the instrument is in standby and the sensor is exposed to a sample. The batteries will provide about three weeks of power for purging while the instrument is off.

1.8.3 Instrument Clock Setting

If you use the instrument to store measurements for downloading to a PC, you should verify the date and time settings of the instrument's internal clock, as described in “Clock Settings” on page 51.

1.8.4 Barometric Pressure Setting

The internal barometric pressure sensor has been factory calibrated but should be verified on-site with a precision certified barometer, and corrected if necessary. For instructions on how to do this, please refer to “Barometric Pressure Sensor Calibration” on page 35.

1.8.5 Sensor Membrane

Check that the membrane has been installed correctly, and is flat, tight, and wrinkle free.

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
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