Hach 900 manual Keypad and Key Functions

Page 21

Section 4

Operation

4.1 Keypad and Key Functions

 

Figure 8 shows the 18-position keypad and 24-character alphanumeric

 

display.

 

 

Button

Function

 

 

ON

Energizes Sampler

 

 

OFF

De-energizes sampler and halts program in progress

 

 

 

Initiates the sampling program and resets all counts to zero (including datalogger).

START PROGRAM

When the START PROGRAM button is pressed, all recorded data (program entries and

collected sample times/dates) are erased from memory. Always download recorded data

 

 

before pressing START PROGRAM.

 

 

NEW PROGRAM

Allows input of new sample program...programming choices appear on display.

 

 

YES/ENTER

Causes a positive response when a question appears on display; accepts new programmed

value or previously entered value.

 

 

 

NO/PASS

Causes a negative response when a question appears on display; in standby state, the

software revision number is displayed.

 

 

 

CLEAR ENTRY

Erases program value shown on display; when held for two seconds, permits enable/disable

of level actuation/auxiliary control.

 

 

 

DISPLAY FEEDBACK

Displays program status and a review of the program.

 

 

CHANGE/HALT

Stops sampler program and places in standby state. When started, press this key prior to

making any program change and before pressing keys 4, 5, 6, 7, 8, 9, and NEW PROGRAM.

 

 

 

RESUME PROGRAM

Causes the program to continue from the point at which it is halted.

 

 

BOTTLE ADVANCE

Feature not available with this model.

 

 

PUMP (Manual Mode)

Pumps sample liquid (pump forward) when held. Pump stops when released.

 

 

PURGE (Manual Mode)

Purges sample liquid (pump reverse) when held. Pump stops when released.

 

 

STOP PUMP (Manual Mode)

Stops pump when using PUMP LOCK (see *). When held for 3 seconds (with sampler in a

 

standby state), permits selection of other languages.

TAKE SAMPLE

Initiates sample cycle independent of program.

 

 

TIME SET

Allows setting real time and date

 

 

TIME READ

Causes real time and date to appear on display. When held for 3 seconds, display indicated

time and date each sample was taken (or missed).

 

 

 

 

During programming, causes program to back-step. After CHANGE/HALT, allows altering of

 

bottle parameters (container volume, etc.). After CHANGE/HALT, provides review of

* (asterisk)

parameters (i.e. number of bottles, volume of bottle(s), line length, etc.). After PUMP/PURGE,

 

(manual mode) activates PUMP LOCK. Pump runs forward (KEY 5) or reverse (KEY 6)

 

without holding key. KEY 7 stops the pump.

 

 

 

Page 21

8544operations.fm

Operation

Image 21
Contents Sigma 900 Composite Sampler Page Table of Contents Table of Contents Pump/Controller Housing Controller DimensionsSample Volume Sample Volume RepeatabilityPage Instrument Description Interface ConnectorsReceptacle Caps General InformationSection Humidity IndicatorFront Panel Keypad and DisplaySafety Information Safety InformationPrecautionary Labels Use of Hazard InformationHazardous Locations Peligro Confined Space EntryDefinition of Confined Space Selecting the Installation Site InstallationUnpacking the Instrument Attaching the Intake Line Mounting the SamplerVinyl Intake Tubing Teflon-Lined Polyethylene Intake LineInstalling the Full Bottle Shut-Off Setting Up the Intake Line and StrainerSetting Up the Intake Line and Strainer Choosing BottlesPower Connections Power Connections12 V dc 12 V dc Connector Pin AssignmentsAuxiliary Connection Auxiliary Pin AssignmentsContact Closures MA InputAuxiliary Connection Splitter Interface 20 mA Interface and Pulse Duration InputPage Keypad and Key Functions Tips and Techniques for Programming the Instrument Tips and Techniques for Programming the InstrumentBottle Setup Mode Section Setting the Time and DateSetting the Time and Date 1035 AM 24OCT00Section Explanations of Program Messages Manual Mode Data LoggingManually Operating the Sample Pump Measurements Triggered by Liquid Levels or Flow ModeMeasurements Triggered by Liquid Levels or Flow Other Displayed Messages Section Programming the Sampler for Level ControlSection Flow Proportional Operation How to Calculate Pulses/CountsExample Flow Proportional OperationTherefore, the value for Intv = Cnts is Calculate t You want to collect 32 samples over an 8-hour period Page Removing and Opening the Controller Cleaning the SamplerRe-installing the Bottom Panel Re-installing the Bottom PanelSection Internal Desiccant Module Circuit Board IdentificationInternal Desiccant Module Memory Battery Internal Case Humidity IndicatorMotor/Gear Box Motor/Gear BoxOrdering Information for the U.S.A Repair ServiceContact Information for Europe Limited Warranty LimitationsLimitation of Remedies Page Parts and Accessories Description Part NumberTray/Positioner Page Program Flow Chart Page Temperature MaintenanceLead-Acid Gel Cell Batteries ChargingNickel-Cadmium Battery Storage Recommendations Lead-Acid Battery Storage RecommendationsStorage Temperature Maximum Recommended Storage Time Appendix BExploded View 1 Item Number DescriptionExploded View Drawings Appendix C Exploded View 2 Appendix C Exploded View 3 Appendix C Exploded View 4 Part DescriptionPart Appendix C Exploded View 5 Item Number Description Part Number Appendix C Exploded View 6