Emerson NGA 2000 TO2 Alarms…, Concentration alarm setup… Measure Back… ClrAlm

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Model NGA 2000 TO2

Instruction Manual

760008-A September 2001

b.Alarms

From the Analyzer Module Setup and Controls menu, choose Alarms as follows:

Main Menu

↓

Analyzer and I/O, expert controls and 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…

TO2	37.50 ppm
-- Alarms --
Alarm delay:	1.0 s
Concentration alarm setup…

Measure

Back…

ClrAlm!

Move the cursor to the “Alarms…” line and press the ↵ key. The “Alarms” menu will dis- play as shown below.

The “Alarm delay” function on the Alarms menu establishes the time between an ex- ceedance and the triggering of the alarm. It is adjustable from 0.0 to 30.0 seconds. Move the cursor to the “Alarm delay:” line and press the ↵ key. Adjust the value using the ↑ and ↓ keys or select the digit using the ← and → keys.

Use the F5 (ClrAlm!) key to clear any acti- vated alarms. This should be done only after the signal has returned to the allowed range to reset the alarm for new events.

Move the cursor to the “Concentration alarm setup..” line and press the ↵ key to reach the “Concentration Alarm Setup” menu as shown below.

TO2				37.50 ppm
		-- Concentration Alarm Setup --
	Alarm generation is:Re			s…On
	Level for Low-Low alarm:			0.0 ppm
	Level for Low alarm:			10.0 ppm
	Level for High alarm:			50.0 ppm
	Level for High-High alarm:			100.0 ppm
	Low-Low alarm:			Off
	Low alarm:			On
	High alarm:			Off
	High-High alarm:			Off
	Measure		Back…

To turn alarms on or off, select the “Alarm generation is:” line and toggle it between “On” or “Off.”

Four alarms are available. Select any alarm and adjust the concentration value for trig- gering that alarm. Setting an alarm concen- tration to 0.0 will deactivate that alarm.

The status of the alarms displays below the line.

Figure 3-18. Alarms

Rosemount Analytical Inc. A Division of Emerson Process Management

Operation 3-17

Image 41

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 SoftkeysFeatures Section Description and SpecificationsOverview Typical ApplicationsTrace Oxygen Detector Coulometric Principle Trace Oxygen Analyzer Module Top View General SPECIFICATIONS1Sample PhysicalGas Connections Model NGA 2000 TO2 Unpacking Section InstallationElectrolyte Electrolyte AdditionGAS Connections GasesGAS Overpressure Sample FlowElectrical Connections Electrical Shock Hazard Leak TestSensor Damage Analyzer Module Interconnection with Instrument Platform Outline and Mounting Dimensions Back Panel Connections Displays & Operating Keys OperationMeasure 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 Startup & Initialization LCDReset AbortMeasure Status… Back… Quick StartInitiate quick start Power supply voltages… Measure Back… Basic CONTROLS, Setup and StatusAnalyzer Channel Status Display Status… Main… ChannelMain… Channel BasicCal Single Component DisplayDisplay Status… Multi Component Display Select Status… Tags Off LCDResetRange number Basic Controls and SetupOperation Status Range numberBrightness and Contrast Display ControlsDisplay controls… Brightness 70 %Analyzer and I/O, expert controls & setup… Expert Controls and SetupAnalyzer module controls… Measure Channel Back…Gas Scale Factor Calibration ProcedureAir background gas concentration Gas scale factor…Span gas 90.0 ppm Measure Status… Back… Span CalibrationAlarms… AlarmsConcentration alarm setup… Measure Back… ClrAlm Alarm generation isReRanges… RangesBegin / end of ranges… Range Begin PpmLinearization Measurement Display ConfigurationMeasurement display configuration… Gas measurement units Concentration MeasurementConcentration measurement… Gas concentration unitsSensor model Temperature compensation at span gasClamp low PVA to Ppm to mg/Nm3 conversion factorFlow lower limit 400 ml/min Flow MeasurementFlow measurement… Temperature measurement units Temperature MeasurementTemperature measurement… Measure Status… Back… System & network I/O module controls… System & Network I/O Module CON Trols Setup37.50 ppm System SIO module…System SIO Analog output setup…Choose signal Analog Output SetupSelect analog output number Choose the analyzer moduleHold output during calibration Signal value for 0% outputHold output during calibration Output number Operation modeOutputs value on analyzer failure Type of installed serial inter- face Analog Output Updates Per SecondOutput #1 Yes Baud rate 19200Invert signal Relay Outputs SetupCommunication protocol Choose source moduleSystem DIO Choose signal…Function control Input numberSystem Configuration and DIAG- Nostics Analyzer Module Diagnostics Diagnostic MenusLoad/Save Module Configura- tion Security Codes Date and TimeEntering 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 Refilling Sensor Sensor AssemblySensor Lleak Check Electrolyte ReplacementSensor Replacement Linearization Analyzer and I/O expert controls & setup…Do not tilt Sensor excessively as elec- trolyte may leak Time & DateLinearization… Linearization temperature values…0000 ppm Linearization raw values sensor current…Electronic Components Flow Sensor ReplacementFuses Printed Circuit BoardsTroubleshooting Section TroubleshootingFailure to purge down to ppm levels Erratic and very insensitive readingsModel NGA 2000 TO2 TO2 NGA 2000 TO2 Trace Oxygen Analyzer Module Section Replacement PartsMatrix Replacement Parts Section Return of Material Customer ServiceReturn of Material TrainingModel NGA 2000 TO2 Section Index Model NGA 2000 TO2 Product ELECTROLYTE1 Precautions to be taken in handling Emergency & first aid proceduresOther precautions Threshold limit value Routes of entryRosemount Warranty Asia Pacific EUROPE, Middle EAST, Africa Latin America