Teledyne 3300TB operating instructions Contact ID for Failsafe Relay Operation

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3 Installation

Model 3300TB

 

 

 

 

 

 

 

 

 

Analog Outputs: There are three DC output signal connectors with screw terminals on the panel. There are two wires per output with the polar- ity noted. See Figure 3-3. The outputs are:

0–10 V % Range:

Voltage rises with increasing oxygen concentration,

 

from 0 V at 0 percent oxygen to 10 V at full scale

 

percent oxygen. (Full scale = 100% of programmed

 

range.)

0–10 V Range ID:

03.33 V = Low Range, 06.66 V = High Range,

 

10 V = Air Cal Range.

4–20 mA % Range:

Current increases with increasing oxygen concentra-

 

tion, from 4 mA at 0 percent oxygen to 20 mA at full

 

scale percent oxygen. (Full scale = 100% of pro-

 

grammed range.)

Alarm Relays: The three alarm-circuit connectors are screw terminals for making connections to internal alarm relay contacts. There is one set of contacts for each type of alarm. Contacts are Form C, with normally open and normally closed contact connections capable of switching up to 0.5 ampere at 125 VAC into a resistive load (2A for 30 VDC).

The alarm relay circuits are designed for failsafe operation, meaning the relays are energized during normal operation. If power fails the relays de- energize (alarms activated).

The contact connections are indicated diagrammatically on the rear panel as Normally Closed, Common, and Normally Open. Figure 3-2 explains how these act in failsafe operation.

Alarm 1 and Alarm 2 can both be configured as either HI or LO. A HI alarm will activate when concentration is above treshold, while a LO alarm will activate concentration is below treshhold.

Figure 3-2: Contact ID for FAILSAFE Relay Operation

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Teledyne Analytical Instruments

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Contents Model 3300TB Copyright 1999 Teledyne Analytical Instruments Contents Maintenance AppendixProtective Earth Combustible GAS Usage Warning Trace Oxygen Analyzer Introduction Main Features of the AnalyzerIntroduction Overview Introduction Model 3300TB Set AlarmFront Panel Description Rear Panel Description Rear PanelAnalog Outputs RS-232 PortOperational Theory Introduction Micro-Fuel Cell SensorTrace Oxygen Analyzer Operational Theory Principles of OperationOperational Theory Model 3300TB Anatomy of a Micro-Fuel CellElectrochemical Reactions Effect of PressureCalibration Characteristics Characteristic Input/Output Curve for a Micro-Fuel CellGeneral Signal ProcessingElectronics Operational Theory Model 3300TB Unpacking the Analyzer InstallationTrace Oxygen Analyzer Installation Installation Model 3300TB Control Unit InstallationInstalling the Micro-Fuel Cell / Cell Block Orientation Location and MountingElectrical Connectors for AC Control Unit Electrical ConnectionsContact ID for Failsafe Relay Operation Alarm #1 Alarm #2Gas Connections Sensor FailInstallation Model 3300TB Vacuum Service Option Piping Diagram for Vacuum Service OptionInstallation Checklist Installation Model 3300TB Operation Introduction Trace Oxygen Analyzer OperationOperation Model 3300TB Using the Function and Data Entry ButtonsSetting the Analysis Ranges Setting the Alarm Setpoints Set AlarmTrace Oxygen Analyzer Operation HI Range LO RangeSensor Fail Alarm Selecting a Fixed Range or Autoranging CalibrationOperation Model 3300 TB Displaying Percent & PPM on the LED DisplaySupplementary Information Maintenance Trace Oxygen Analyzer MaintenanceRemove Power to Unit before replacing the fuse Replacing the FuseSensor Installation or Replacement Maintenance Model 3300TBWhen to Replace a Sensor Ordering and Handling of Spare SensorsRemoving the Micro-Fuel Cell Exploded View of MFC and Cell BlockCell Warranty Conditions Installing a Micro-Fuel CellDisconnect the Power Source from the Control Unit Trace Oxygen Analyzer Maintenance Maintenance Model 3300TB Appendix Specifications Trace Oxygen Analyzer AppendixSpare Parts List Appendix Model 3300TBReference Drawing MiscellaneousAppendix Model 3300TB Material Safety Data Sheet Signs/symptoms of exposure Primary route of entryExposure limits Osha PEL Effects of overexposure IngestionProtective measures Disposal