Teledyne 3300ZB operating instructions Gas Connections

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Trace Oxygen Analyzer

Installation

 

 

 

The RS-232 protocol allows some flexibility in implementation in the choice of values for certain parameters. Table 3-2 lists the RS-232 values required by the Model 3300ZB implementation.

Table 3-2: Required RS-232 Options

 

Parameter

Setting

Baud

2400

Byte

8 bits

Parity

none

Stop Bits

1

Message Rate

2 per second

3.4 Gas Connections

The standard Model 3300ZB has two inlet (sample and span) and one outlet port. All connections have 1/8” tube fittings installed. A switching valve is provided to feed the unit with either sample or calibration gas as shown in Figure 3-3.

A flowmeter and flow controller valve are part of the system and will assist in setting the flow of the gas.

Sample flow should be adjusted to 2 SCFH. The sample vent connection should not restrict the sample flow. The sensor is designed to operate at atmospheric pressure. Restricting the sample vent line will result in pressurizing the sensor and altering the O2 reading.

The pressure required will depend on the sampling system. When venting into a constant pressure, such as the atmosphere, controlling input pressure is simple. If you are venting into a system of varying pressure, then some form of pressure regulation is required to maintain a constant pressure.

Sample and span pressure must NOT exceed 50 psig (345 Kpa).

Figure 3-3 shows a standard piping diagram for positive pressure service.

Teledyne Analytical Instruments

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Contents Model 3300ZB Model 3300ZB Safety Messages Model 3300ZB Table of Contents Maintenance Front Panel List of FiguresCombustible GAS Usage This page intentionally left blank Page Overview Main Features of the AnalyzerIntroduction Front Panel Front Panel Description∙ Measurement Parameters Readout Rear Panel Description Power Connection Principles of Operation Operational TheoryIntroduction Zirconium Oxide SensorsGeneral ElectronicsEffect of Pressure Block Diagram of the Signal Processing Electronics Signal ProcessingOperational Theory Model 3300ZB Unpacking the Analyzer InstallationElectrical Connections Control Unit InstallationLocation and Mounting Rear Panel Electrical Connectors Contact ID for Failsafe Relay Operation Gas Connections Piping Diagram Installation ChecklistOperation Front Panel Controls and IndicatorsSetting the Analysis Ranges Using the Function and Data Entry ButtonsHI Range Setting the Alarm SetpointsHI Alarm LO AlarmCalibration Sensor Fail AlarmSelecting a Fixed Range or Autoranging LED Display on StartUp This page intentionally left blank Replacing the Fuse MaintenanceWhen to Replace a Sensor Sensor Installation or ReplacementZrO2 Sensor and Cell Block This page intentionally left blank Appendix SpecificationsTeledyne Analytical Instruments Spare Parts ListDrawing List