Trace Oxygen Detector Coulometric Principle | Emerson NGA 2000 TO2

Instruction Manual

760008-A September 2001

Model NGA 2000 TO2

SECONDARY ANODE (+)

BI-STRATA™ DIFFUSION BAR- RIER

SAMPLE IN

S

KOH

e-

ELECTRONICS

O2
	OH-

SAMPLE OUT

S

O2 SENSING CATHODE (-)

O2

e-

SECONDARY CATHODE (-)

O2 SENSING ANODE (-)

Figure 1-1. Trace Oxygen Detector Coulometric Principle

1-2

Description and Specifications

Rosemount Analytical Inc. A Division of Emerson Process Management

Image 14

Emerson NGA 2000 TO2 instruction manual Trace Oxygen Detector Coulometric Principle

Contents

Model NGA 2000 TO2 Essential Instructions Table of Contents Model NGA 2000 TO2 System & Network I/O Module Controls Setup Material Safety Data Sheet List of Illustrations Analyzer Module Interconnection with Instrument Platform Model NGA 2000 TO2 Preface Intended USE Statement Definitions Safety Summary Model NGA 2000 TO2 Documentation Compliances Glossary of Terms Softkeys System Overview Section Description and SpecificationsFeatures Typical Applications Trace Oxygen Detector Coulometric Principle Trace Oxygen Analyzer Module Top View Sample SPECIFICATIONS1General Physical Gas Connections Model NGA 2000 TO2 Electrolyte Section InstallationUnpacking Electrolyte Addition GAS Overpressure GasesGAS Connections Sample Flow Electrical Connections Electrical Shock Hazard Leak TestSensor Damage Analyzer Module Interconnection with Instrument Platform Outline and Mounting Dimensions Back Panel Connections Operation Displays & Operating Keys Measure Status… Channel Lock… MFG Data Analyzer basic controls calibration & setup…Menu Lines & Softkey Functionality Measure Back… Signal on mini-bargraphEntering & Changing Variables Display Status… Main… Channel BasicCal Measure Mode DisplayPpm O2 Module Manufacturing Data Displays LCDReset Abort Startup & Initialization Measure Status… Back… Quick StartInitiate quick start Analyzer Channel Status Basic CONTROLS, Setup and StatusPower supply voltages… Measure Back… Display Status… Main… Channel Main… Channel BasicCal Single Component DisplayDisplay Status… Select Status… Tags Off LCDReset Multi Component Display Operation Status Basic Controls and SetupRange number Range number Display controls… Display ControlsBrightness and Contrast Brightness 70 % Analyzer module controls… Expert Controls and SetupAnalyzer and I/O, expert controls & setup… Measure Channel Back… Calibration Procedure Gas Scale Factor Gas scale factor… Air background gas concentration Span Calibration Span gas 90.0 ppm Measure Status… Back… Concentration alarm setup… Measure Back… ClrAlm AlarmsAlarms… Alarm generation isRe Begin / end of ranges… RangesRanges… Range Begin Ppm Linearization Measurement Display ConfigurationMeasurement display configuration… Concentration measurement… Concentration MeasurementGas measurement units Gas concentration units Clamp low PVA to Temperature compensation at span gasSensor model Ppm to mg/Nm3 conversion factor Flow lower limit 400 ml/min Flow MeasurementFlow measurement… Temperature measurement units Temperature MeasurementTemperature measurement… Measure Status… Back… 37.50 ppm System & Network I/O Module CON Trols SetupSystem & network I/O module controls… System SIO module… Analog output setup… System SIO Select analog output number Analog Output SetupChoose signal Choose the analyzer module Hold output during calibration Signal value for 0% outputHold output during calibration Output number Operation modeOutputs value on analyzer failure Output #1 Yes Analog Output Updates Per SecondType of installed serial inter- face Baud rate 19200 Communication protocol Relay Outputs SetupInvert signal Choose source module Function control Choose signal…System DIO Input number System Configuration and DIAG- Nostics Analyzer Module Diagnostics Diagnostic MenusLoad/Save Module Configura- tion Date and Time Security Codes Entering a level locked by security code System ResetSystem reset Measure Back… Model NGA 2000 TO2 Sensor Caustic Liquid Section Maintenance and ServiceOverview Electrical Shock Hazard Sensor Assembly Refilling Sensor Sensor Lleak Check Electrolyte ReplacementSensor Replacement Do not tilt Sensor excessively as elec- trolyte may leak Analyzer and I/O expert controls & setup…Linearization Time & Date 0000 ppm Linearization temperature values…Linearization… Linearization raw values sensor current… Fuses Flow Sensor ReplacementElectronic Components Printed Circuit Boards Failure to purge down to ppm levels Section TroubleshootingTroubleshooting Erratic and very insensitive readings Model NGA 2000 TO2 TO2 NGA 2000 TO2 Trace Oxygen Analyzer Module Section Replacement PartsMatrix Replacement Parts Return of Material Customer ServiceSection Return of Material Training Model NGA 2000 TO2 Section Index Model NGA 2000 TO2 Product ELECTROLYTE1 Other precautions Emergency & first aid proceduresPrecautions to be taken in handling Threshold limit value Routes of entry Rosemount Warranty Asia Pacific EUROPE, Middle EAST, Africa Latin America