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Hach 900 MAX manual 11 Memory Battery, Page

Models: 900 MAX

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Section 7

Section 7

7.11 Memory Battery

Random Access Memory (RAM) is a very reliable data storage medium for microprocessor applications. However, RAM requires power at all times. If power is removed, the data stored in the RAM chip is lost. Therefore, RAM chips cannot be powered from the sampler power supply because data and program settings would be lost every time the power cord was unplugged. A separate battery located inside the sampler controller is provided to power the RAM chips and the real-time clock. The memory battery keeps the program entries and logged sample data alive inside the RAM memory when the main power fails or is removed for transport or replacement.

The sampler memory battery consists of two “C” cell alkaline batteries.

Should the memory battery voltage fall too low to properly maintain the program settings, a warning: MEMORY POWER LOW will alert to replace the battery. The sampler utilizes a very small amount of energy from the memory battery during normal operation. The service life of the batteries in this application is typically five years.

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Memory Battery	8990mnt.fm

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Hach 900 MAX manual 11 Memory Battery, Page

Contents

Sigma 900 MAX Refrigerated Sampler Catalog Number07/03 4ed INSTRUMENT MANUALPage Catalog Number Sigma 900 MAX Refrigerated SamplerINSTRUMENT MANUAL Page Table of Contents Table of ContentsPage Table of Contents Table of Contents Table of Contents Trouble Alarm Conditions, Causes, and SolutionsPrecautionary Labels Safety PrecautionsUse of Hazard Information Confined Space Entry Safety Precautions Hazardous LocationsDefinition of Confined Space Specifications Specifications Factory Installed Options SpecificationsSpecifications Rain Gauge InputSpecifications Submerged Area/Velocity ProbePage 1.1 Controller Cover SectionIntroduction 1.2 Front Panel1.2.2 Liquid Crystal Display Section1.2.1 Keypad Description Power ON/OFF KeySection 1.2.3 Internal Humidity IndicatorFigure 2 Humidity Indicator Status BarSection 1.3 Interface Connectors 1.3.1 Receptacle CapsAccurate, Repeatable Sample Volumes Section 1.4 Principle of Operation1.4.1 Liquid Sensing FigureIntake Tube Pre-Rinse SectionSample Retry PELIGRO INSTALLATIONDANGER GEFAHRPage 2.2 Selecting the Installation Site InstallationSection Figure 4 Setting Up the InstrumentSection 2.3 Installing the Pump Tube in the Sensor BodyFigure 5 Pump Tube Loading Section 2.3.1 Attaching the Intake LineFigure 7 3/8” Vinyl Tubing Connector 2.3.1.1 Attaching the Vinyl Tubing2.3.2 Setting Up the Intake Line and Strainer 2.4 Choosing Bottle and Retainer ConfigurationsSection 2.5.2 Two- and Four-bottleSampling 2.5 Setting Up the Bottles2.5.1 One-BottleSampling Figure 9 Bottle ConfigurationsFigure 10 Two-bottleLocations 2.5.3 Eight-, 12-,or 24-bottleSamplingSection Figure 11 Four-bottleLocationsFigure 12 Eight-, 12-,or 24-bottleConfiguration SectionSection 2.6.1Distributor Arm AlignmentFigure 14 Distributor Installation Figure 13 Distributor Tubing in ArmFigure 15 Full Bottle Shut-offInstallation 2.8 Power ConnectionsSection 2.9Auxiliary Receptacle Pin Identification SectionFigure 16 Splitter Interface 2.9.1 Splitter InterfaceSection 8990hrd.fmPage DANGER OPERATIONDANGER PELIGROPage 3.2 Basic Programming Setup Section 3 Basic Programming Setup3.1 Initial Power-Upof Sampler Sample VolumeStep 1 - Bottles SectionStep 3 - Program Lock Step 2 - Intake TubingSection Section Step 4 - Program DelayStep 5 - Sample Collection Timed-ProportionalSampling IntervalsSection d.Press ACCEPT to continue to Sample DistributionSection Table 2 Sampler Pacing Flow UnitsSection ExampleSection CHANGESingle Bottle Step 6 - Sample DistributionSection Multiple Bottle SetsSection If NO is selectedEnabling the Liquid Sensor Step 7 - Liquid SensorSection Disabling the Liquid Sensor/Timed CalibrationStep 9 - Intake Rinses Section Step 8 - Sample VolumeStep 10 - Sample Retries 11-D. If NO, the basic setup program is complete Section Step 11 - Site ID3.3 Advanced Sampling Variable VolumesSection Step 12 - Program Complete Output Step 13 - Setpoint SamplingSection HIGHTable 3 Sampling Triggers and Settings Step 14 - Special OutputSection Section Step 15 - Start/Stop TimesBottle Number Step 16 - Storm Water SectionTable 4 Start Condition Requirements SectionFirst Flush Bottles Section ACCEPTStep 17 - Timed Bottle Sets SectionStep 18 - Upset Sample SectionSection ACCEPTVARIABLE VOLUME Step 20 - Variable VolumeSection Step 19 - Variable Intervals SELECT RETURN4.1.1 Downlook Ultrasonic Sensor Connection Sensor Setup4.1 Downlook Ultrasonic Sensor 4.1.2 Downlook Ultrasonic Sensor ProgrammingSection 4.1.3.3Setting the Invisible Range4.1.3.2 Sensor Height 4.2.2Submerged Area/Velocity Sensor Programming 4.2Submerged Area/Velocity Sensor4.2.1 Submerged Area/Velocity Sensor Connection SectionSection •The sensor is first used4.3.1 Submerged Pressure Sensor Connection 4.3 Submerged Pressure SensorSection Section 4.3.2Submerged Pressure Sensor Programming4.3.3Submerged Pressure Sensor Calibration Figure 18 Lifting the Sensor Out of the WaterVertical Orientation Only SectionHorizontal Orientation Only Page Section Optional Device Installation5.1 Rain Gauge Rain Gauge section 5.1 on5.2.1 pH Probe Connection 5.2 pH Probe5.1.1 Rain Gauge Programming Table 8 pH Connector Pin Assignments J35.2.3pH Probe Calibration 5.2.2pH Probe ProgrammingSection 5.3.1 ORP Probe Connection 5.3 ORP ProbeSection Table 9 ORP Connector Pin Assignments J3 5.3.2ORP Probe Programming5.3.3ORP Probe Calibration Section5.4.2 Dissolved Oxygen Probe Programming 5.4Dissolved Oxygen Probe5.4.1 Dissolved Oxygen Probe Connection SectionSection 5.4.4Dissolved Oxygen Probe CalibrationCalibrating the D.O. Temperature 5.5.2Conductivity Probe Programming Section 5.5 Conductivity Probe5.5.1 Conductivity Probe Connection 5.5.3Conductivity Temperature Programming5.5.4Conductivity Probe Calibration SectionSection Calibrating the Conductivity Temperature6.1.1 RS232 Connection Section 6 Communication Setup6.1 RS232 Cable 6.1.2 RS232 ProgrammingModem Connection Modem6.2.1 6.2.2 Modem Programming6.2.2.1 Cellular Communication Option Installation and SetupSection Site Selection6.2.2.2Reliable Communications Section6.2.2.3 Cellular Modem Scheduling Section 6.2.2.4 Cellular Modem Scheduling Basis6.2.2.6 Pager Option Section6.2.2.5 Cellular Modem Triggering Cellular Modem Triggered DurationSection 6.2.2.7 Reporting DevicesTable 15 Pager Alarm Codes Section4–20mA Connection 4–20mA Option6.3.1 6.3.2 4–20mA Programming6.3.3 4–20mA Calibration SectionSection 6.4 Alarm RelaysFigure 24 Calibration with the Meter in the Loop Section 6.4.1 Alarm Relays ConnectionTable 17 Relay Connector J17 Figure 26 Relay Pin ConnectionsMemory Battery 6.4.2 Alarm Relays ProgrammingLow Main Battery Alarm ActionsLevel Set Point Alarm ConditionsSection Cabinet Temperature refrigerated samplersAnalog Inputs Connection Analog Inputs6.5.1 Section6.5.2 Analog Inputs Programming SectionDANGER MAINTENANCEDANGER PELIGROPage 7.2 Pump Tubing Maintenance Maintenance7.1 Cleaning the Sampler 7.1.1 Cleaning the Sampler CabinetSection 7.3 Upgrades, Repairs, General Maintenance7.2.2Replacing Pump Tubing Figure 29 Pump Tube Loading7.5Removing and Opening the Controller 7.4 Internal Maintenance ItemsElectrostatic Discharge ESD Considerations Section2 3 12 4 13 6 7.6 Re-installingthe Bottom Panel8 16 7 SectionTable 20 CPU Board Connectors Section 7.7 Circuit Board IdentificationCPU BOARD FigureFigure UTILITY BOARDSection Utility Board7.10 Internal Desiccant Module Section 7.8 Replacing the Fuse7.9 Motor/Gear Box 7.10.1 Replacing the DesiccantMemory Battery Section 7.11 Memory BatteryPage MAIN MENU Appendix AQuick Start Guides Option MenuAppendix A SEE ADVANCED SAMPLING FLOW CHARTMain Menu SetupAppendix A 8990apdx_quickstart.fmAppendix A Pick Advanced Options AlarmsAppendix A Pick OneAppendix A Appendix A 8990apdx_quickstart.fmPage Running a Program Appendix B Programming FeaturesReview All Items Displaying DataTabular or Graph Format Appendix B Selecting the ChannelTable 22 Display Data Functions and Descriptions Sample History Appendix B Graph ManipulationGraphic Display Averaging Table 23 Graphing Functions and DescriptionsVolume Calibration Appendix B Options Menu FeaturesSetting the Time and Date Sensor DisabledTable 24 Calibration Volumes Appendix BSensor Enabled Calibration Procedure—SensorDisabledCalibration Procedure—SensorEnabled Timed Rinse Calibration Procedure—SensorDisabledAppendix B Power Save Mode Appendix B Data LogLogging Intervals Extended Power ModeAppendix B Dynamic Memory AllocationPower Save Mode • Slate ModemMemory Mode Configuration Data Logging ConfigurationDiagnostics Appendix BEvent List Appendix BDistributor Test Logged events includeAppendix B SIGNAL STRENGTH: 90‰ VELOCITY: 7.00 fps RETURNProgramming Features LCD TestBattery Power Appendix B Load ProgramScreen Saver Mode ac PowerAcre-feet Appendix B Flow TotalizerModify Setup LitersAppendix B Reset TotalizerView Totals Appendix C Troubleshooting and Error Messages Error MessagesTroubleshooting and Error Messages Appendix CPage Troubleshooting and Error Messages Trouble Alarm Conditions, Causes, and SolutionsSolution Appendix CSolutions Downlook Ultrasonic Sensor TroubleshootingProblems Troubleshooting and Error MessagesAppendix C pH Troubleshooting Troubleshooting and Error Messages ProblemSolution Appendix CExample Appendix D How to Calculate Pulses/CountsExample Appendix D ExampleCalculate Q Appendix DExample ExampleExample Appendix D2.Calculate t ExampleDescription Appendix E Exploded DrawingsItem QuantityCat. No Appendix EDescription DescriptionAppendix E Appendix E Sigma 900 Composite Refrigerator Assembly Appendix EAppendix E Sigma 900 Discrete Refrigerator Assembly Appendix EAppendix E Transition Tray Assembly 110 cm 43.5” ref Appendix E8990apdx_exploded.fm Page Page GENERAL INFORMATIONGENERAL INFORMATION Page Parts and Accessories Area x Velocity Measurement Sensors Parts and AccessoriesNote: For cleaner PageDepth Measurement Sensors Parts and AccessoriesInstalled Integral Depth Only Flow Meter Option Sensor Mounting HardwarePage Parts and AccessoriesUltrasonic Sensor Mounting Hardware OptionOrdering Information for the U.S.A Repair ServiceContact Information for U.S.A. and Outside Europe Technical SupportContact Information for Europe Limitations WarrantyLimitation of Remedies Index NumericsIndex Index