Emerson NGA 2000 TO2 instruction manual Linearization, Measurement Display Configuration

Page 43

Model NGA 2000 TO2

Instruction Manual

760008-A September 2001

d.Linearization

Linearization is only performed when the sensor is changed. See section 4-3 be- low.

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…

TO2	37.50 ppm
	-- Measurement Display Configuration --

e. Measurement Display Configuration

Move the cursor to the “Measurement display configuration…” line and press the ↵ key. The “Measurement Display Configuration” menu will be displayed.

The first two lines allow for setting the con- centration value displayed precision and number of digits.

Displayed concentration digits: Digits after decimal point:

Module identification tag:

Signal on mini-bargraph – 1: Signal on mini-bargraph – 2: Signal on mini-bargraph – 3: Signal on mini-bargraph – 4:

Measure

6

2

TO2

Electrolyte level Temp current Range Sensor current

Back…

The “Module identification tag:” line set the displayed neumonic for the analyzer on all display screens. Select the line and press the

↵key to change the values using the ← and → keys to select a digit and then the ↑ and ↓ keys to change the value. The values will scroll through all numbers and upper and lowercase letters.

Figure 3-20. Measurement Display Configuration

The “Signal on mini-bargraph” lines are used to set various status values that can display on the four lines available on the single component (Measure) display. Se-

lect a line and press the ↵ key. To change the value use the ↑ and ↓ keys. The val- ues will scroll through the allowable se- lections as follows:

Electrolyte level	Displays “OK” or “Low.”
Range	Displays the range number from 1 to 4.
Sample flow	Displays the sample flow rate in ml/min with a bargraph.
Sensor current	Displays the sensor current in uA with a bargraph.
Temp. current	Displays the heater current in uA with a bargraph.
Sensor temp.	Displays the sensor temperature in °C with a bargraph.
Validity	Not functional on the TO2.
Operation status	Not functional on the TO2.

Rosemount Analytical Inc. A Division of Emerson Process Management

Operation 3-19

Image 43

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