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Model OT-3 Teledyne Analytical Instruments ii Copyright © 2000 Teledyne Analytical Instruments All Rights Reserved. No part of this manual may be reproduced, transmitted, transcribed,stored in a retrieval system, or translated into any other language or computer language inwhole or in part, in any f...

Page 3 - Specific Model Information; The instrument for which this manual was supplied may; Instrument Serial Number:

Trace Oxygen Analyzer Teledyne Analytical Instruments iii Specific Model Information The instrument for which this manual was supplied may incorporate one or more options not supplied in the standard instrument.Commonly available options are listed below, with check boxes. Anythat are incorporated i...

Page 4 - Important Notice; Symbol

Model OT-3 Teledyne Analytical Instruments iv Important Notice Model OT-3 complies with all of the requirements of the Commonwealth of Europe (CE) for Radio Frequency Interference,Electromagnetic Interference (RFI/EMI), and Low Voltage Directive(LVD). The following International Symbols are used thr...

Page 5 - This manual provides information designed to guide you through

Trace Oxygen Analyzer Teledyne Analytical Instruments v This instrument is designed for CL1 DIV II hazardous locations. Itis the customer's responsibility to ensure safety especially whencombustible gases are being analyzed since the potential of gasleaks always exist. The customer should ensure tha...

Page 6 - Table of Contents

Model OT-3 Teledyne Analytical Instruments vi Table of Contents List of Figures ............................................................................. viii Introduction.................................................................................... 1 1.1 Overview 1 1.2 Main Features of th...

Page 8 - List of Figures

Model OT-3 Teledyne Analytical Instruments viii List of Figures Figure 1-1: Front Panel................................................................... 3 Figure 1-2: Rear Panel (AC Version) .............................................. 5 Figure 1-3: Rear Panel (DC Version)..........................

Page 9 - Introduction; Main Features of the Analyzer

Trace Oxygen Analyzer Introduction Teledyne Analytical Instruments 1 Introduction 1.1 Overview The Teledyne Electronic Technologies Analytical Instruments (TET/AI) Model OT-3 is a microprocessor-based trace oxygen analyzerfor real-time measurement of the parts per million of oxygen in inertgases, or...

Page 10 - Front Panel Description; Operation

Introduction OT-3 Teledyne Analytical Instruments 2 The Model 3300/OT-3 Control Unit has its own long list of features including: • Keypad lockout feature • Two user settable fail-safe alarms (with a user settable 0-20min. time delay ) • Two user settable ranges (from 0-10PPM – 0-9999PPM)with user s...

Page 12 - Rear Panel Description; Installation; Power Connection AC version:; Maintenance

Introduction OT-3 Teledyne Analytical Instruments 4 Meter Readout: As the meter readout, it displays the oxygen concentration currently being measured. Measurement Parameters Readout: It also displays user-definable alarm setpoints, ranges, and spancalibration point when they are being checked or ch...

Page 14 - Operational Theory

Installation OT-3 Teledyne Analytical Instruments 6 Operational Theory 2.1 Introduction The analyzer is composed of two subsystems: • 3300/OT-3 control unit • OT-3 sample sys. The OT-3 sample system is designed to accept the sample gas and direct it to the sensitive surface of the Micro-fuel Cell se...

Page 15 - The Micro-fuel Cell is made of extremely inert plastic (which can

Trace Oxygen Analyzer Installation Teledyne Analytical Instruments 7 between a battery and a true fuel cell. (All of the reactants are storedexternally in a true fuel cell.) 2.2.2 Anatomy of a Micro-fuel Cell The Micro-fuel Cell is made of extremely inert plastic (which can be placed confidently in ...

Page 17 - In order to state the amount of oxygen present in the sample as a

Trace Oxygen Analyzer Installation Teledyne Analytical Instruments 9 2.2.4 The Effect of Pressure In order to state the amount of oxygen present in the sample as a percentage of the gas mixture, it is necessary that the sample diffuse intothe cell under constant pressure. If the total pressure incre...

Page 18 - The signal processing uses an Intel

Installation OT-3 Teledyne Analytical Instruments 10 Figure 2-2: Characteristic MFC Input/Output Curve 2.3 Electronics 2.3.1 General The signal processing uses an Intel  microcontroller with on-board RAM and ROM to control all signal processing, input/output, anddisplay functions for the analyzer. ...

Page 19 - Figure 2-3 is a block diagram of the signal processing electronics

Trace Oxygen Analyzer Installation Teledyne Analytical Instruments 11 2.3.2 Signal Processing Figure 2-3 is a block diagram of the signal processing electronics described below. Figure 2-3: Block Diagram of the Signal Processing Electronics In the presence of oxygen the cell generates a current. The...

Page 21 - Unpacking the Analyzer

Trace Oxygen Analyzer Installation Teledyne Analytical Instruments 13 Installation Installation of the analyzer includes: • Unpacking the system. • Installing the Micro-fuel Cell • Making the electrical connections. • Making the gas connections. • Testing the installation. CAUTION: READ THIS ENTIRE ...

Page 22 - Location and Mounting; MUST ALLWAYS FACE; Electrical Connections

Installation OT-3 Teledyne Analytical Instruments 14 CAUTION: DO NOT DISTURB THE INTEGRITY OF THE CELLPACKAGE UNTIL THE CELL IS TO ACTUALLY BEUSED. IF THE CELL PACKAGE IS PUNCTURED ANDAIR IS PERMITTED TO ENTER, CELL-LIFE WILL BECOMPROMISED. 3.2 Location and Mounting This instrument should be install...

Page 23 - Figure 3-1: Electrical Connectors for AC Control Unit

Trace Oxygen Analyzer Installation Teledyne Analytical Instruments 15 Figure 3-1: Electrical Connectors for AC Control Unit 3.3.1 Primary Input Power A detachable power cord is installed directly into the Control Unit and connects to a three pin terminal block on the rear panel. Theterminal block is...

Page 24 - The alarm relay circuits are designed for failsafe operation. In

Installation OT-3 Teledyne Analytical Instruments 16 • 4–20 mA % Range: Current increases with increasing oxygenconcentration, from 4 mA at 0 percent oxygen to 20 mA atfull scale percent oxygen. (Full scale = 100% of programmedrange.) • SSR POWER (AC units only): Provides 15vdc at 698 ohmimpedance t...

Page 27 - Vent connection

Trace Oxygen Analyzer Installation Teledyne Analytical Instruments 19 • Vent connection • Coalescing filter drain Note: Zero gas is not required however, see Section 5.2.1. Figure 3-3: Gas Connections To connect the gas lines, remove the fitting and ferrule and cone at the bottom panel. Insert the t...

Page 28 - Note: Check the front of this manual for any additional

Installation OT-3 Teledyne Analytical Instruments 20 The vent line must be installed in a manner which will prevent dirt and water from accumulating within the line. It must return sample toatmospheric pressure. The vent line should be 1/4 ” diameter tubing or larger and be at least 24 ” long. This ...

Page 29 - Installation Checklist

Trace Oxygen Analyzer Installation Teledyne Analytical Instruments 21 A flowmeter and flow restrictor are parts of the sample system and assist in setting the flow of the gas. The restrictor is installed upstreamof the analyzer while the flowmeter is installed on the vent side. Adjust the sample pre...

Page 31 - Once the analyzer has been mounted, the gas lines connected and

Trace Oxygen Analyzer Operation Teledyne Analytical Instruments 23 Operation 4.1 Introduction Once the analyzer has been mounted, the gas lines connected and the electrical connections made, the Analyzer can be configured for yourapplication. This involves setting the system parameters: • Defining t...

Page 32 - Using the Function and Data Entry Buttons; Note: The HI Range setpoint MUST be set at a higher

Operation OT-3 Teledyne Analytical Instruments 24 4.2 Using the Function and Data Entry Buttons When no buttons on the Analyzer are being pressed, the instrument is in the Analyze mode. It is monitoring the amount of oxygen in thesample gas that is flowing through the sampling system. When one of th...

Page 33 - Setting the Alarm Setpoints

Trace Oxygen Analyzer Operation Teledyne Analytical Instruments 25 4.3.1 HI Range Setting the HI Range full-scale value defines the LEAST sensitive analysis range to be used. To set the HI Range: 1. Press the SET HI RANGE Function button once. 2. Immediately (within 5 seconds) press either the ∆ or ...

Page 36 - Selecting a Fixed Range or Autoranging; Note: If the concentration exceeds 9999 ppm oxygen, the; Preliminary—If not already done:; Note: This procedure requires a suitable span gas with pressure

Operation OT-3 Teledyne Analytical Instruments 28 will cause the display to flash NO PASS and the keys willhave no effect. 4. To unlock the keypad, repeat steps 1 and 2. Enter the number 10 when the word PASS CODE blinks on the display. 4.7 Selecting a Fixed Range or Autoranging The Model OT-3 can o...

Page 37 - Note: If the analyzer output goes above the high alarm setpoint; Displaying Percent & PPM on the LED Display

Trace Oxygen Analyzer Operation Teledyne Analytical Instruments 29 Note: If the analyzer output goes above the high alarm setpoint or below the low alarm setpoint, the display will go blankand the front panel ALARM Indicator, beneath the SETFunction buttons, will blink. Hold down the SPAN buttonunti...

Page 39 - Aside from normal cleaning and checking for leaks at the gas; Replacing the Fuse; When a fuse blows, check first to determine the cause, then replace; AC Units; The fuse receptacle is located in the power cord receptacle

Trace Oxygen Analyzer Maintenance Teledyne Analytical Instruments 31 Maintenance Aside from normal cleaning and checking for leaks at the gas connections, the Model OT-3 should not require any maintenancebeyond replacement of expended Micro-fuel Cells, and perhaps a blownfuse. Routine maintenance in...

Page 40 - Sensor Installation or Replacement

Maintenance OT-3 Teledyne Analytical Instruments 32 Figure 5-1: AC Fuse Replacement DC Units On DC units, the fuse is located in a fuse holder on the rear panel. See Figure 1-3. Unscrew the cap on the fuse holder and remove theblown fuse. Replace the fuse with a 1/2 A micro fuse P/N F91. 5.2 Sensor ...

Page 41 - READ THE SECTION; CELL WARRANTY; After replacing the Micro-fuel Cell, the analyzer must be

Trace Oxygen Analyzer Maintenance Teledyne Analytical Instruments 33 CAUTION: READ THE SECTION CELL WARRANTY CONDITIONS , BELOW, BEFORE REPLACING THE CELL. After replacing the Micro-fuel Cell, the analyzer must be recalibrated. See Calibration in Chapter 4. 5.2.2 Ordering and Handling of Spare Senso...

Page 42 - The cell should come out

Maintenance OT-3 Teledyne Analytical Instruments 34 2. Open the analyzer door. 3. Unscrew the cell-retainer cap from the cell block by turning it counterclockwise until it is free. 4. Withdraw the cap from the block. The cell should come out with the cap . 5. Carefully pull the cell off of the cap. ...

Page 43 - Note that the warranty period begins on the date of shipment. The

Trace Oxygen Analyzer Maintenance Teledyne Analytical Instruments 35 5.2.5 Cell Warranty Conditions The B-2C , A-2C, and Insta-Trace Class Micro-fuel Cells are used in the Model OT-3. These cells are warranted for 6 months, with anexpected life of 8 months from the date of shipment (under specifiedo...

Page 44 - Appendix; Specifications; : Two user selectable ranges can be set

Appendix OT-3 Teledyne Analytical Instruments 36 Appendix A.1 Specifications Ranges : Two user selectable ranges can be set between 0-10 ppm and 0-9999 ppmoxygen, and a 0-25 % (nominal) AirCalibration Range. Signal Output : Voltage: 0–10 VDC, negative ground Current: 4-20 mA, negative ground Range I...

Page 45 - Spare Parts List; QTY; Regulator; Orders for replacement parts should include the part; TELEDYNE ELECTRONIC TECHNOLOGIES; Analytical Instruments

Trace Oxygen Analyzer Appendix Teledyne Analytical Instruments 37 A.2 Spare Parts List QTY P/N DESCRIPTION 1 C65220-A PC Board, Main (std.) 1 C70740-A PC Board, Power Supply AC (std.) 1 C6689-B-2C Micro-Fuel Cell, class B-2C, or 1 C6689-A-2C Micro-Fuel Cell, class A-2C, (CO 2 type), or 1 B 71875 Mic...

Page 46 - Reference Drawing

Appendix OT-3 Teledyne Analytical Instruments 38 A.3 Reference Drawing D-74110 Outline Diagram B-74106 Piping Diagram D-65305 Schematic main PCB D-70739 Schematic AC Power Supply PCB D-74161 Schematic DC Power Supply PCB B-74224 Wiring diagram 3300/OT-3 ext. SSR drive. A.4 Miscellaneous The symbol ~...

Page 47 - Index

Trace Oxygen Analyzer Index Teledyne Analytical Instruments 39 Index accuracy, 2, 36address. See company address alarm connection, 16delay, 26HI, 16LO, 16power failure, 2, 26SET ALARM 1, 25SET ALARM 2, 26specifications, 36 alarm 1, 17alarm 2, 17alarm indicator, 27alarm indicator LED, 2analog concent...