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Trace Oxygen Analyzer
OPERATING INSTRUCTIONS FOR
Model 3000TA-XL-EU
Trace Oxygen Analyzer
DANGER
HIGHLY TOXIC AND OR FLAMMABLE LIQUIDS OR GASES MAY BE PRESENT IN THIS MONITORING
SYSTEM.
PERSONAL PROTECTIVE EQUIPMENT MAY BE REQUIRED WHEN SERVICING THIS SYSTEM.
HAZARDOUS VOLTAGES EXIST ON CERTAIN COMPONENTS INTERNALLY WHICH MAY PERSIST
FOR A TIME EVEN AFTER THE POWER IS TURNED OFF AND DISCONNECTED.
P/N M69603
ONLY AUTHORIZED PERSONNEL SHOULD CONDUCT MAINTENANCE AND/OR SERVICING. BEFORE
11/24/04
C
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Model 3000TA-XL-EU Copyright © 1999 Teledyne Analytical Instruments All Rights Reserved. No part of this manual may be reproduced, transmitted, tran- scribed, stored in a retrieval system, or translated into any other language or computer language in whole or in part, in any form or by any means, whether it be electronic, mechanical, magnetic, optical, manual, or otherwise, without the prior written consent of Teledyne Analytical Instruments, 16830 Chestnut Street, City of Industry, CA 91749-15
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Trace Oxygen Analyzer 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. Any that are incorporated in the instrument for which this manual is supplied are indicated by a check mark in the box. Instrument Serial Number: _______________________ Options Included in the Instrument with the Above Serial Number: 3000TA-XL-VS: Instru
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Model 3000TA-XL-EU Model 3000TA-XL-EU complies with all of the requirements of the Commonwealth of Europe (CE) for Radio Frequency Interfer- ence, Electromagnetic Interference (RFI/EMI), and Low Voltage Directive (LVD). The following International Symbols are used throughout the Instruc- tion Manual for your visual and immediate warnings and when you have to attend CAUTION while operating the instrument: STAND-BY, Instrument is on Stand-by, but circuit is active GROUND Protective Earth CAUTION,
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Trace Oxygen Analyzer Table of Contents 1 Introduction 1.1 Overview ........................................................................ 1-1 1.2 Typical Applications ....................................................... 1-1 1.3 Main Features of the Analyzer ....................................... 1-1 1.4 Model Designations ....................................................... 1-2 1.5 Front Panel (Operator Interface) ..................................... 1-3 1.6 Rear Panel (Equipment Int
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Model 3000TA-XL-EU 4.3.3.2 Installing or Changing the Password ............. 4-8 4.3.4 Logout .................................................................... 4-9 4.3.5 System Self-Diagnostic Test .................................. 4-9 4.3.6 Version Screen ...................................................... 4-10 4.4 Calibration of the Analyzer............................................. 4-11 4.4.1 Zero Cal ................................................................. 4-11 4.4.1.1 Aut
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Trace Oxygen Analyzer Appendix A-6 Material Safety Data Sheet..................................................A-8 A-7 Installing and Replacing Micro Fuel Cell.........................A-12 Teledyne Analytical Instruments vii
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Model 3000TA-XL-EU DANGER COMBUSTIBLE GAS USAGE WARNING This is a general purpose instrument designed for use in a nonhazardous area. It is the customer's responsibility to ensure safety especially when combustible gases are being analyzed since the potential of gas leaks always exist. The customer should ensure that the principles of operation of this equipment is well understood by the user. Misuse of this product in any manner, tampering with its components, or unau- thorized substitution o
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Trace Oxygen Analyzer Introduction 1 Introduction 1.1 Overview The Teledyne Analytical Instruments Model 3000TA-XL Trace Oxy- gen Analyzer is a versatile microprocessor-based instrument for detecting oxygen at the parts-per-million (ppm) level in a variety of gases. This manual covers the Model 3000TA-XL General Purpose flush-panel and/or rack- mount units only. These units are for indoor use in a nonhazardous environ- ment. 1.2 Typical Applications A few typical applications of the Model 3000
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1 Introduction Model 3000TA-XL-EU • Advanced Micro-Fuel Cell, designed for trace analysis, has a 0-1 ppm low range with less than a 0.2 ppm offset and six months warranty and an expected lifetime of one year. • Versatile analysis over a wide range of applications. • Microprocessor based electronics: 8-bit CMOS microprocessor with 32 kB RAM and 128 kB ROM. • Three user definable output ranges (from 0-1 ppm through 0- 250,000 ppm) allow best match to users process and equipment. • Air-calibra
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Trace Oxygen Analyzer Introduction 1 1.5 Front Panel (Operator Interface) The standard 3000TA-XL is housed in a rugged metal case with all controls and displays accessible from the front panel. See Figure 1-1. The front panel has thirteen buttons for operating the analyzer, a digital meter, an alphanumeric display, and a window for viewing the sample flowmeter. Function Keys: Six touch-sensitive membrane switches are used to change the specific function performed by the analyzer: Door Latch Di
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1 Introduction Model 3000TA-XL-EU • Alarms Set the alarm setpoints and attributes. • Range Set up the 3 user definable ranges for the instrument. Data Entry Keys: Six touch-sensitive membrane switches are used to input data to the instrument via the alphanumeric VFD display: • Left & Right Arrows Select between functions currently displayed on the VFD screen. • Up & Down Arrows Increment or decrement values of functions currently displayed. • Enter Moves VFD display on to the next screen in
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Trace Oxygen Analyzer Introduction 1 all the way in with a narrow gauge tool. Accessing the main circuit board requires unfastening rear panel screws and sliding the unit out of the case. 1.6 Rear Panel (Equipment Interface) The rear panel, shown in Figure 1-2, contains the gas and electrical connectors for external inlets and outlets. Some of those depicted are op- tional and may not appear on your instrument. The connectors are described briefly here and in detail in chapter 3 Installation.
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1 Introduction Model 3000TA-XL-EU • RS-232 Port Serial digital concentration signal output and control input. • Remote Probe Used in the 3000TA-XL for controlling external solenoid valves only. • Remote Span/Zero Digital inputs allow external control of analyzer calibration. • Calibration Contact To notify external equipment that instrument is being calibrated and readings are not monitoring sample. • Range ID Contacts Four separate, dedicated, range relay contacts. Low, Medium, High, Cal. •
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Trace Oxygen Analyzer Operational Theory 2 Operational Theory 2.1 Introduction The analyzer is composed of three subsystems: 1. Micro-Fuel Cell Sensor 2. Sample System 3. Electronic Signal Processing, Display and Control The sample system is designed to accept the sample gas and transport it through the analyzer without contaminating or altering the sample prior to analysis. The Micro-Fuel Cell is an electrochemical galvanic device that translates the amount of oxygen present in the sample into
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2 Operational Theory Model 3000TA-XL-EU comes from outside the device as a constituent of the sample gas being analyzed. The Micro-Fuel Cell is therefore a hybrid between a battery and a true fuel cell. (All of the reactants are stored externally in a true fuel cell.) 2.2.2 Anatomy of a Micro-Fuel Cell The Micro-Fuel Cell is a cylinder only 1¼ inches in diameter and 1¼ inches thick. It is made of an extremely inert plastic, which can be placed confidently in practically any environment or s
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Trace Oxygen Analyzer Operational Theory 2 2 the oxygen sensing element—the cathode—with a surface area almost 4 cm . The cathode has many perforations to ensure sufficient wetting of the upper surface with electrolyte, and it is plated with an inert metal. The anode structure is below the cathode. It is made of lead and has a proprietary design which is meant to maximize the amount of metal available for chemical reaction. At the rear of the cell, just below the anode structure, is a flexible
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2 Operational Theory Model 3000TA-XL-EU (These reactions are specific to oxygen as long as no gaseous compo- nents capable of oxidizing lead—such as iodine, bromine, chlorine and fluorine—are present in the sample.) In the absence of oxygen, no current is generated. 2.2.4 The Effect of Pressure In order to state the amount of oxygen present in the sample in parts- per-million or a percentage of the gas mixture, it is necessary that the sample diffuse into the cell under constant pressure. I
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Trace Oxygen Analyzer Operational Theory 2 Figure 2-3. Characteristic Input/Output Curve for a Micro-Fuel Cell 2.3 Sample System The sample system delivers gases to the Micro-Fuel Cell sensor from the analyzer rear panel inlet. Depending on the mode of operation either sample or calibration gas is delivered. The Model 3000TA-XL sample system is designed and fabricated to ensure that the oxygen concentration of the gas is not altered as it travels through the sample system. The sample sy
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2 Operational Theory Model 3000TA-XL-EU SAMPLE IN EXHA UST RIGHT SIDE TOP VCR Exhaust Sample In Out Cell Block Needle Valve Flowmeter Figure 2-4: Piping Layout Figure 2-5 is the flow diagram for the sampling system. In the standard instrument, calibration gases can be connected directly to the Sample In port by teeing to the port with appropriate valves. Teledyne Analytical Instruments 2-6
