Hach Ultra ORBISPHERE 510 Operator's Manual

Also see for ORBISPHERE 510: Quick guide

Contents

Hach Ultra ORBISPHERE 510 Operator's Manual Manual pdf 50 page image

44 of 138 Measurement Menu - Orbisphere 510/511/512 AnalyzersOperator ManualORBISPHERE4.1 Instrument Configuration4.1.1 TPO or TPA Calculation (portable instrument)The TPO (Total Package Oxygen) and TPA (Total Package Air) features are available onthe portable instrument for an EC sensor measuring oxygen (refer also to the table in“Generic Terms and Definitions” on page 132 for an explanation of these two terms).To initiate these options, the instrument must be configured in “Sample mode” (see“Continuous or Sample Mode Selection” below) and the TPO or TPA calculation must beenabled (see “Advanced Configuration” on page 50).The operator also needs to ensure the package is shaken for about 5 minutes beforemeasuring, and to know the total volume of the package and the total volume of thecontents of the package.4.1.2 Continuous Mode vs Sample Mode (portable instrument)Continuous mode is typically used for process measurement, whereas sample mode isaimed at lab measurements of small volume individual samples such as cans, bottles,etc. The measurement mode is a parameter defined for the entire instrument, not foreach channel."Continuous mode" cycle• Every 2 sec. measurements are refreshed on the display• The relays and the analog outputs are updated• Measurements are continuously stored in memory (volatile and non volatilememory) according to individual settings"Sample mode" cycle (portable instruments)When the user wants to measure a sample:• He prepares the sample• He starts the measurement• When the "stop criteria" is reached (defined in the channel configuration screen -see details in “Stop Criteria Configuration (portable instrument)” on page 46), themeasurement value is frozen and stored according to individual settings. If thechannel is configured for TPO or TPA calculation the user must enter therespective parameters (see “TPO and TPA Parameters (portable instrument)” onpage 46)• The user can then start a new measurement4.1.3 Continuous or Sample Mode SelectionIn the menu, select “Main/Measurement/Configureinstrument”. Select “Measurement mode”:-Continuous mode for on line process-Sample mode for lab sample analysis (portableinstruments only). Selection of units for barometric, external pressureand temperature.