Emerson NGA 2000 TO2 instruction manual Span Calibration, Span gas 90.0 ppm Measure Status… Back…

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Instruction Manual

760008-A September 2001

Model NGA 2000 TO2

Span Calibration

Depending upon the nature of your appli- cation, it may be beneficial to verify the

span calibration of the analyzer module every 3-4 months. The following proce- dure illustrates how to initiate a span cali- bration.

Main Menu

↓

Analyzer and I/O, expert controls and setup…

↓

Analyzer module controls… (Or Analyzer module setup…)

↓

TO2

37.50 ppm

-- Analyzer Module Setup and Controls --

Calibration…

Alarms…

Ranges…

Linearization…

Measurement display configuration…

Concentration measurement…

Flow measurement…

Temperature measurement…

Measure

Status…

Back…

Introduce a suitable span gas to the analyzer and allow the reading to stabilize.

Move the cursor to the “Span gas:” line and press the ↵ key. Enter the correct span gas value by using the ↑ and ↓ keys to adjust the value and the ← and → keys to select the digit. Press the ↵ key again to save the value.

TO2

37.50 ppm

-- Calibration --

Gas scale factor…

Reset calibration!

Calibrate to span gas!

Span gas:

90.0 ppm

Measure

Status…

Back…

Move the cursor to the “Calibrate to span gas!” line and press the ↵ key. The new span calibration will be calculated.

Figure 3-17. Span Calibration

3-16 Operation

Rosemount Analytical Inc. A Division of Emerson Process Management

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Contents Model NGA 2000 TO2 Essential Instructions Table of Contents Model NGA 2000 TO2System & Network I/O Module Controls Setup Material Safety Data SheetList of Illustrations Analyzer Module Interconnection with Instrument PlatformModel NGA 2000 TO2 Preface Intended USE Statement DefinitionsSafety Summary Model NGA 2000 TO2 Documentation CompliancesGlossary of Terms Softkeys SystemSection Description and Specifications FeaturesOverview Typical ApplicationsTrace Oxygen Detector Coulometric Principle Trace Oxygen Analyzer Module Top View SPECIFICATIONS1 GeneralSample PhysicalGas Connections Model NGA 2000 TO2 Section Installation UnpackingElectrolyte Electrolyte AdditionGases GAS ConnectionsGAS Overpressure Sample FlowSensor Damage Leak TestElectrical Connections Electrical Shock Hazard Analyzer Module Interconnection with Instrument Platform Outline and Mounting Dimensions Back Panel Connections Operation Displays & Operating KeysMenu Lines & Softkey Functionality Analyzer basic controls calibration & setup…Measure Status… Channel Lock… MFG Data Entering & Changing Variables Signal on mini-bargraphMeasure Back… Ppm O2 Measure Mode DisplayDisplay Status… Main… Channel BasicCal Module Manufacturing Data Displays LCDReset Abort Startup & InitializationInitiate quick start Quick StartMeasure Status… Back… Basic CONTROLS, Setup and Status Power supply voltages… Measure Back…Analyzer Channel Status Display Status… Main… ChannelDisplay Status… Single Component DisplayMain… Channel BasicCal Select Status… Tags Off LCDReset Multi Component DisplayBasic Controls and Setup Range numberOperation Status Range numberDisplay Controls Brightness and ContrastDisplay controls… Brightness 70 %Expert Controls and Setup Analyzer and I/O, expert controls & setup…Analyzer module controls… Measure Channel Back…Calibration Procedure Gas Scale FactorGas scale factor… Air background gas concentrationSpan Calibration Span gas 90.0 ppm Measure Status… Back…Alarms Alarms…Concentration alarm setup… Measure Back… ClrAlm Alarm generation isReRanges Ranges…Begin / end of ranges… Range Begin PpmMeasurement display configuration… Measurement Display ConfigurationLinearization Concentration Measurement Gas measurement unitsConcentration measurement… Gas concentration unitsTemperature compensation at span gas Sensor modelClamp low PVA to Ppm to mg/Nm3 conversion factorFlow measurement… Flow MeasurementFlow lower limit 400 ml/min Temperature measurement… Measure Status… Back… Temperature MeasurementTemperature measurement units System & Network I/O Module CON Trols Setup System & network I/O module controls…37.50 ppm System SIO module…Analog output setup… System SIOAnalog Output Setup Choose signalSelect analog output number Choose the analyzer moduleHold output during calibration Signal value for 0% outputHold output during calibration Outputs value on analyzer failure Operation modeOutput number Analog Output Updates Per Second Type of installed serial inter- faceOutput #1 Yes Baud rate 19200Relay Outputs Setup Invert signalCommunication protocol Choose source moduleChoose signal… System DIOFunction control Input numberSystem Configuration and DIAG- Nostics Load/Save Module Configura- tion Diagnostic MenusAnalyzer Module Diagnostics Date and Time Security CodesSystem reset Measure Back… System ResetEntering a level locked by security code Model NGA 2000 TO2 Overview Electrical Shock Hazard Section Maintenance and ServiceSensor Caustic Liquid Sensor Assembly Refilling SensorSensor Replacement Electrolyte ReplacementSensor Lleak Check Analyzer and I/O expert controls & setup… LinearizationDo not tilt Sensor excessively as elec- trolyte may leak Time & DateLinearization temperature values… Linearization…0000 ppm Linearization raw values sensor current…Flow Sensor Replacement Electronic ComponentsFuses Printed Circuit BoardsSection Troubleshooting TroubleshootingFailure to purge down to ppm levels Erratic and very insensitive readingsModel NGA 2000 TO2 Matrix Section Replacement PartsTO2 NGA 2000 TO2 Trace Oxygen Analyzer Module Replacement Parts Customer Service Section Return of MaterialReturn of Material TrainingModel NGA 2000 TO2 Section Index Model NGA 2000 TO2 Product ELECTROLYTE1 Emergency & first aid procedures Precautions to be taken in handlingOther precautions Threshold limit value Routes of entryRosemount Warranty Asia Pacific EUROPE, Middle EAST, Africa Latin America