Hach 900 manual Tips and Techniques for Programming the Instrument

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Section 4

Figure 8

Front Panel

4.2Tips and Techniques for Programming the Instrument

•The instrument beeps each time a key is pressed.

•After the ON button is presses, the display will show one of the following messages: "Program Halted", "Program Running", "Program Complete", or "Ready to Start".

•The program status changes to Program Complete when sampling is complete and there are no samples to be taken or the optional full bottle shut-off is actuated.

•When the program is stopped (an no changes to the program settings were made while it was stopped), pressing the START PROGRAM key will prompt to resume the previously running program (an retain all logged data) or Start From Beginning (and clear all logged data).

•When programming the instrument, pressing the * key causes the display to back up to the previous field.

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Tips and Techniques for Programming the Instrument	8544operations.fm

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Contents Sigma 900 Composite Sampler Page Table of Contents Table of Contents Sample Volume Controller DimensionsPump/Controller Housing Sample Volume RepeatabilityPage Receptacle Caps Interface ConnectorsInstrument Description General InformationFront Panel Humidity IndicatorSection Keypad and DisplaySafety Information Safety InformationUse of Hazard Information Precautionary LabelsHazardous Locations Confined Space Entry PeligroDefinition of Confined Space Installation Selecting the Installation SiteUnpacking the Instrument Vinyl Intake Tubing Mounting the SamplerAttaching the Intake Line Teflon-Lined Polyethylene Intake LineSetting Up the Intake Line and Strainer Setting Up the Intake Line and StrainerInstalling the Full Bottle Shut-Off Choosing BottlesPower Connections Power ConnectionsAuxiliary Connection 12 V dc Connector Pin Assignments12 V dc Auxiliary Pin AssignmentsMA Input Contact ClosuresAuxiliary Connection 20 mA Interface and Pulse Duration Input Splitter InterfacePage Keypad and Key Functions Tips and Techniques for Programming the Instrument Tips and Techniques for Programming the InstrumentSetting the Time and Date Section Setting the Time and DateBottle Setup Mode 1035 AM 24OCT00Section Explanations of Program Messages Data Logging Manual ModeManually Operating the Sample Pump Mode Measurements Triggered by Liquid Levels or FlowMeasurements Triggered by Liquid Levels or Flow Section Programming the Sampler for Level Control Other Displayed MessagesExample How to Calculate Pulses/CountsSection Flow Proportional Operation Flow Proportional OperationTherefore, the value for Intv = Cnts is Calculate t You want to collect 32 samples over an 8-hour period Page Cleaning the Sampler Removing and Opening the ControllerRe-installing the Bottom Panel Re-installing the Bottom PanelCircuit Board Identification Section Internal Desiccant ModuleInternal Desiccant Module Motor/Gear Box Internal Case Humidity IndicatorMemory Battery Motor/Gear BoxRepair Service Ordering Information for the U.S.AContact Information for Europe Limitations Limited WarrantyLimitation of Remedies Page Description Part Number Parts and AccessoriesTray/Positioner Page Program Flow Chart Page Lead-Acid Gel Cell Batteries MaintenanceTemperature ChargingStorage Temperature Maximum Recommended Storage Time Lead-Acid Battery Storage RecommendationsNickel-Cadmium Battery Storage Recommendations Appendix BItem Number Description Exploded View 1Exploded View Drawings Appendix C Exploded View 2 Appendix C Exploded View 3 Part Description Appendix C Exploded View 4Part Appendix C Exploded View 5 Appendix C Exploded View 6 Item Number Description Part Number