Emerson NGA 2000 TO2 instruction manual Quick Start, Initiate quick start, Measure Status… Back…

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Model NGA 2000 TO2

Instruction Manual

760008-A September 2001

a.Quick Start

This analyzer module is equipped with a quick start feature which allows the sen- sor to begin measuring low ppm oxygen faster. This feature can be used when the analyzer is first turned on to decrease the time required for the sensor to reach equilibrium. This function is most effective for gas sample measurements below 100 ppm. To maintain sensor life, it is recom- mended that this feature be used no more than two times in any 24 hour period.

A normal start can take from 2 to 72 hours depending on the concentration being measured. The lower the oxygen concen-

TO2

37.50 ppm

-- Main Menu --

Analyzer basic controls (calibration) & setup…

Analyzer and I/O, expert controls & setup…

System configuration and diagnostics…

Display controls…

Time & Date:

10:30:05 August 10 2001

System tag:

Fisher-Rosemount

Measure

Status…

Channel

Lock…

MFG Data

tration in the sample gas, the longer the analyzer will take to reach equilibrium.

To abort the quick start, move the cursor to the “Exit quick start!” line and press the

↵key. The quick start process will cease but another quick start should not be at- tempted until the “Next quick start possi- ble after:” timer reaches zero. This timer provides the means to avoid more than two quick starts in any 24 hour period.

The “Quick Start” function can be ac- cessed from the “Measure” display by pressing F5 (BasicCal) or from the Main Menu as follows:

From the Main Menu, move the cursor to Analyzer basic controls (calibration) & setup…

	TO2						37.50 ppm
				-- Basic Controls and Setup --
		Range number:				4
		Range upper limit:					100 ppm
		Initiate quick start!
		Exit quick start!
		Exit Sleep mode!
		Next quick start possible after:					35343 s
		Quick start timer:					45 s
		Sleep mode timer:					2700 s
		Operation status:					Normal
		Measure		Status…		Back…

In the Basic controls and Setup menu, move the cursor to the “Initiate quick start!” line and press the ↵ key. The analyzer will begin the quick start function immediately. This proc- ess will take about 45 seconds. The “Quick start timer” will count down this period.

The last measured value is held for the dura- tion of the process to prevent false reading fluctuations.

Figure 3-9. Initiate Quick Start

Rosemount Analytical Inc. A Division of Emerson Process Management

Operation 3-7

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Contents Model NGA 2000 TO2 Essential Instructions Model NGA 2000 TO2 Table of ContentsMaterial Safety Data Sheet System & Network I/O Module Controls SetupAnalyzer Module Interconnection with Instrument Platform List of IllustrationsModel NGA 2000 TO2 Definitions Preface Intended USE StatementSafety Summary Model NGA 2000 TO2 Compliances DocumentationGlossary of Terms System SoftkeysTypical Applications Section Description and SpecificationsFeatures OverviewTrace Oxygen Detector Coulometric Principle Trace Oxygen Analyzer Module Top View Physical SPECIFICATIONS1General SampleGas Connections Model NGA 2000 TO2 Electrolyte Addition Section InstallationUnpacking ElectrolyteSample Flow GasesGAS Connections GAS OverpressureSensor Damage Leak TestElectrical Connections Electrical Shock Hazard Analyzer Module Interconnection with Instrument Platform Outline and Mounting Dimensions Back Panel Connections Displays & Operating Keys OperationMenu 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 Startup & Initialization LCDReset AbortInitiate quick start Quick StartMeasure Status… Back… Display Status… Main… Channel Basic CONTROLS, Setup and StatusPower supply voltages… Measure Back… Analyzer Channel StatusDisplay Status… Single Component DisplayMain… Channel BasicCal Multi Component Display Select Status… Tags Off LCDResetRange number Basic Controls and SetupRange number Operation StatusBrightness 70 % Display ControlsBrightness and Contrast Display controls…Measure Channel Back… Expert Controls and SetupAnalyzer and I/O, expert controls & setup… Analyzer module controls…Gas Scale Factor Calibration ProcedureAir background gas concentration Gas scale factor…Span gas 90.0 ppm Measure Status… Back… Span CalibrationAlarm generation isRe AlarmsAlarms… Concentration alarm setup… Measure Back… ClrAlmRange Begin Ppm RangesRanges… Begin / end of ranges…Measurement display configuration… Measurement Display ConfigurationLinearization Gas concentration units Concentration MeasurementGas measurement units Concentration measurement…Ppm to mg/Nm3 conversion factor Temperature compensation at span gasSensor model Clamp low PVA toFlow measurement… Flow MeasurementFlow lower limit 400 ml/min Temperature measurement… Measure Status… Back… Temperature MeasurementTemperature measurement units System SIO module… System & Network I/O Module CON Trols SetupSystem & network I/O module controls… 37.50 ppmSystem SIO Analog output setup…Choose the analyzer module Analog Output SetupChoose signal Select analog output numberHold output during calibration Signal value for 0% outputHold output during calibration Outputs value on analyzer failure Operation modeOutput number Baud rate 19200 Analog Output Updates Per SecondType of installed serial inter- face Output #1 YesChoose source module Relay Outputs SetupInvert signal Communication protocolInput number Choose signal…System DIO Function controlSystem Configuration and DIAG- Nostics Load/Save Module Configura- tion Diagnostic MenusAnalyzer Module Diagnostics Security Codes Date and TimeSystem 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 Refilling Sensor Sensor AssemblySensor Replacement Electrolyte ReplacementSensor Lleak Check Time & Date Analyzer and I/O expert controls & setup…Linearization Do not tilt Sensor excessively as elec- trolyte may leakLinearization raw values sensor current… Linearization temperature values…Linearization… 0000 ppmPrinted Circuit Boards Flow Sensor ReplacementElectronic Components FusesErratic and very insensitive readings Section TroubleshootingTroubleshooting Failure to purge down to ppm levelsModel NGA 2000 TO2 Matrix Section Replacement PartsTO2 NGA 2000 TO2 Trace Oxygen Analyzer Module Replacement Parts Training Customer ServiceSection Return of Material Return of MaterialModel NGA 2000 TO2 Section Index Model NGA 2000 TO2 Product ELECTROLYTE1 Threshold limit value Routes of entry Emergency & first aid proceduresPrecautions to be taken in handling Other precautionsRosemount Warranty Asia Pacific EUROPE, Middle EAST, Africa Latin America