Teledyne Percent Oxygen Analyzer, 9060L User Manual

OPERATING INSTRUCTIONS FOR
Model 9060L
Percent Oxygen Analyzer
P/N M77713
ECO:
DANGER
Toxic gases and or flammable liquids may be present in this monitoring system. Personal protective equipment may be required when servicing this instrument. Hazardous voltages exist on certain components internally which may persist
for a time even after the power is turned off and disconnected. Only authorized personnel should conduct maintenance and/or servicing.
Before conducting any maintenance or servicing, consult with authorized supervisor/manager.
Teledyne Analytical Instruments
Model 9060L
Copyright © 2005 Teledyne Instruments/ 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 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 Instruments/ Analytical Instruments, 16830 Chestnut Street, City of Industry, CA 91749-
1580.
Warranty
This equipment is sold subject to the mutual agreement that it is warranted by us free from defects of material and of construction, and that our liability shall be limited to replacing or repairing at our factory (without charge, except for transportation), or at customer plant at our option, any material or construction in which defects become apparent within one year from the date of shipment, except in cases where quotations or acknowledgements provide for a shorter period. Components manufactured by others bear the warranty of their manufacturer. This warranty does not cover defects caused by wear, accident, misuse, neglect or repairs other than those performed by TI/AI or an authorized service center. We assume no liability for direct or indirect damages of any kind and the purchaser by the acceptance of the equipment will assume all liability for any damage which may result from its use or misuse.
We reserve the right to employ any suitable material in the manufacture of our apparatus, and to make any alterations in the dimensions, shape or weight of any parts, in so far as such alterations do not adversely affect our warranty.
Important Notice
This instrument provides measurement readings to its user, and serves as a tool by which valuable data can be gathered. The information provided by the instrument may assist the user in eliminating potential hazards caused by his process; however, it is essential that all personnel involved in the use of the instrument or its interface, with the process being measured, be properly trained in the process itself, as well as all instrumentation related to it.
The safety of personnel is ultimately the responsibility of those who control process conditions. While this instrument may be able to provide early warning of imminent danger, it has no control over process conditions, and it can be misused. In particular, any alarm or control systems installed must be tested and understood, both as to how they operate and as to how they can be defeated. Any safeguards required such as locks, labels, or redundancy, must be provided by the user or specifically requested of TI/AI at the time the order is placed.
Therefore, the purchaser must be aware of the hazardous process conditions. The purchaser is responsible for the training of personnel, for providing hazard warning methods and instrumentation per the appropriate standards, and for ensuring that hazard warning devices and instrumentation are maintained and operated properly.
Teledyne Instruments/ Analytical Instruments, the manufacturer of this instrument, cannot accept responsibility for conditions beyond its knowledge and control. No statement expressed or implied by this document or any information disseminated by the manufacturer or its agents, is to be construed as a warranty of adequate safety control under the user’s process conditions.
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Percent Oxygen Analyzer
Specific Model Information
Instrument Serial Number: _______________________
Instrument Range: _______________
Calibrated for: _______________
Background Gas: _______________
Zero Gas: _______________
Span Gas: _______________
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Model 9060L
Safety Messages
Your safety and the safety of others is very important. We have provided many important safety messages in this manual. Please read these messages carefully.
A safety message alerts you to potential hazards that could hurt you or others. Each safety message is associated with a safety alert symbol. These symbols are found in the manual and inside the instrument. The definition of these symbols is described below:
GENERAL WARNING/CAUTION: Refer to the instructions
for details on the specific danger. These cautions warn of specific procedures which if not followed could cause bodily Injury and/or damage the instrument.
CAUTION: HOT SURFACE WARNING: This warning is
specific to heated components within the instrument. Failure to heed the warning could result in serious burns to skin and underlying tissue.
WARNING: ELECTRICAL SHOCK HAZARD: Dangerous
voltages appear within this instrument. This warning is specific to an electrical hazard existing at or nearby the component or procedure under discussion. Failure to heed this warning could result in injury and/or death from electrocution.
Technician Symbol: All operations marked with this symbol
are to be performed by qualified maintenance personnel only.
No
Symbol
CAUTION: THE ANALYZER SHOULD ONLY BE USED FOR THE
NOTE: Additional information and comments regarding a
specific component or procedure are highlighted in the form of a note.
PURPOSE AND IN THE MANNER DESCRIBED IN THIS MANUAL.
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Percent Oxygen Analyzer
IF YOU USE THE ANALYZER IN A MANNER OTHER THAN THAT FOR WHICH IT WAS INTENDED, UNPREDICTABLE BEHAVIOR COULD RESULT POSSIBLY ACCOMPANIED WITH HAZARDOUS CONSEQUENCES.
This manual provides information designed to guide you through the installation, calibration operation and maintenance of your new analyzer. Please read this manual and keep it available.
Occasionally, some instruments are customized for a particular application or features and/or options added per customer requests. Please check the front of this manual for any additional information in the form of an Addendum which discusses specific information, procedures, cautions and warnings that may be peculiar to your instrument.
Manuals do get lost. Additional manuals can be obtained from TI/AI at the address given in the Appendix. Some of our manuals are available in electronic form via the internet. Please visit our website at:
www.teledyne-ai.com.
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Model 9060L
Table of Contents
List of Figures ............................................................................viii
List of Tables................................................................................ix
Introduction................................................................................. 11
1.1 Overview 11
1.2 Main Features of the Analyzer 11
1.3 Front Panel Description 12
1.4 Rear Panel Description 13
Operational Theory.....................................................................15
2.1 Introduction 15
2.2 Oxygen Probe, Sensor, and Heater 15
2.2.1 Probe Configuration 17
2.2.2 The Zirconia Sensor 18
2.2.3 Heater 19
2.3 Applications Not at Atmospheric Pressure 20
2.4 Sensor Impedance 20
2.5 Electronics 20
2.5.1 General 20
2.5.2 Signal Processing 21
Installation................................................................................... 23
3.1 Unpacking the Analyzer 23
3.2 Control Unit Installation 23
3.3 9060L Oxygen Probe Installation 23
3.4 Electrical Connections 25
3.4.1 Primary Input Power 25
3.4.2 Analog Outputs 26
3.4.3 Alarm Relays 26
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Percent Oxygen Analyzer
3.4.1 Oxygen Probe Connections 28
3.5 Installation Checklist 29
Operation .....................................................................................31
4.1 Introduction 31
4.2 Using the Function and Data Entry Buttons 32
4.3 Setting the Analysis Ranges 32
4.3.1 HI Range 33
4.3.2 LO Range 33
4.4 Setting the Alarm Setpoints 33
4.4.1 Set Alarm 1 (HI alarm) 33
4.4.2 Set Alarm 2 (LO alarm ) 34
4.4.3 Sensor Fail Alarm 34
4.5 Selecting a Fixed Range or Autoranging 34
4.6 Oxygen Calibration 35
4.6.1 Span Calibration 35
4.6.2 Air Calibration 37
4.7 Supplementary Information 37
4.8 Probe Temperature 37
4.8.1 Low Temperature 38
4.8.2 Open Thermocouple 38
4.9 Error Messages 38
Maintenance.................................................................................41
5.1 Replacing the Fuse 41
Appendix......................................................................................43
A.1 Specifications 43 A.2 Probe Specifications 44 A.3 Spare Parts List 45 Email: ask_tai@teledyne.comA.4 Reference Drawing 45 A.4 Reference Drawing 46 A.5 Probe or Sensor EMF Tables 46
Index.............................................................................................49
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Model 9060L
List of Figures
Figure 1-1: Front Panel................................................................12
Figure 1-2 Rear Panel................................................................... 14
Figure 2-1: Model 9060L Oxygen Probe.......................................16
Figure 2-2: Model 9060L Probe.....................................................17
Figure 2-3: Internal Structure of the Zirconia Sensor and Probe...18
Figure 2-3: Signal Processing Block Diagram...............................21
Figure 3-1: Oxygen Probe Mounting.............................................25
Figure 3-2: Model 9060L Rear panel............................................. 26
Figure 3-3: Contact ID for FAILSAFE Relay Operation................. 27
Figure 3-4:Model 9060L Heated Probe Cable Connection ............ 28
Figure 3-5: Connections to Probe .................................................29
Figure 4-1: Front Panel Controls and Indicators............................31
Figure 4-2: Calibration Port on Probe Head.................................. 35
Figure 5-1: AC Fuse Replacement................................................ 41
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Percent Oxygen Analyzer
List of Tables
Table 2-1: Probe Options ..............................................................17
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Model 9060L
DANGER
COMBUSTIBLE GAS USAGE
This is a general purpose instrument designed for use in a non-hazardous 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 operating this equipment are well understood by the user. Misuse of this product in any manner, tampering with its components, or unauthorized substitution of any component may adversely affect the safety of this instrument.
WARNING
Since the use of this instrument is beyond the control of Teledyne Instruments/ Analytical Instruments, referred as TI/AI, no responsibility by TI/AI, its affiliates, and agents for damage or injury from misuse or neglect of this equipment is implied or assumed.
Teledyne Analytical Instruments x
Percent Oxygen Analyzer Introduction
Introduction
1.1 Overview
The Teledyne Instruments/ Analytical Instruments (TI/AI) Model 9060L is a microprocessor-based percent oxygen analyzer for real-time measurement of the percent of oxygen in inert gases, or in a wide variety of gas mixtures. It features simple operation, fast response, and a compact, rugged construction. Typical applications of the Model 9060L are monitoring kilns, boilers, and flue gas at temperature from ambient up to 1400°C (2550°F).
1.2 Main Features of the Analyzer
The main features of the analyzer include:
High resolution, accurate readings of oxygen content from 0-1 %
through 0-100 % O2. Large, bright, light-emitting-diode meter readout.
Simple pushbutton controls.
State of the art zirconia sensor.
Longer life probes with greater resistance to thermal shock and
mechanical damage during installation and start-up.
Fast response and recovery time.
Microprocessor based electronics: 8-bit CMOS microprocessor
with on-board RAM and 16 KB ROM.
Two user selectable ranges (from 0-1% through 0-100%) allow
best match to user’s process and equipment.
Air-calibration range for convenient spanning at 20.9 %.
Operator can select autoranging, which allows the analyzer to
automatically select the proper preset range for a given measurement, or lock the analyzer onto a single range.
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Introduction Model 9060L
Two concentration alarms with adjustable setpoints.
A failure alarm.
Three analog outputs: two for measurement (0–10VDC, and
negative ground 4–20 mA DC) and one for range identification (0-10VDC).
Compact and rugged control unit with flush-panel case.
Designed for indoor use.
1.3 Front Panel Description
All controls and displays except the power switch are accessible from the front panel. See Figure 1-1. The front panel has seven pushbutton membrane switches, a digital meter, and an alarm indicator LED for operating the analyzer. These features are described briefly
here and in greater detail in Chapter 4, Operation.
Figure 1-1: Front Panel
Function Keys: Seven pushbutton membrane switches are used to
select the function performed by the analyzer:
Set Alarm 1 Sets the concentration at which alarm 1
activates upon rising above the threshold (HI alarm).
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Percent Oxygen Analyzer Introduction
Set Alarm 2 Sets the concentration at which alarm 2
activates upon dropping below the threshold (LO alarm).
Set HI Range Set the high analysis range for the
instrument (up to 0-100%).
Set LO Range Set the low analysis range for the
instrument (down to 0-1%).
Span Span calibrate the analyzer.
Data Entry Keys: Two pushbutton membrane switches are used to
manually change measurement parameters of the instrument as they are displayed on the LED meter readout:
Up Arrow Increment values of parameters upwards
as they are displayed on the LED readout.
Down Arrow Increment values of parameters
downwards as they are displayed on the LED readout.
Digital LED Readout: The digital display is a LED device that
produces large, bright, 7-segment numbers that are legible in any lighting environment. It has two functions:
Meter Readout As the meter readout, it displays the oxygen
concentration currently being measured.
Measurement Parameters Readout The parameter readout
displays user-defined alarm setpoints, ranges, span calibration point when they are being checked or changed, and probe temperature on demand.
1.4 Rear Panel Description
The rear panel contains the electrical input and output connectors.
The connectors are described briefly here and in detail in the Installation
chapter of this manual.
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Introduction Model 9060L
Figure 1-2 Rear Panel
Power Connection 110 VAC at 50/60 Hz. The connector
housing includes the fuse holder and the power switch. (220VAC is optional via setting an internal switch).
Fuse Holder: Replacing the fuse is
described in Chapter 5, Maintenance.
I/O Power Switch: Turns the instrument
power ON (1) or OFF (0).
Analog Outputs 0–10 VDC concentration output.
0–10 VDC range ID (or optional overrange) output. 4–20 mA DC concentration output, negative ground.
Alarm Connections Alarm 1 (HI alarm), Alarm 2 (LO alarm),
and Probe Failure Alarm connections.
Sensor Connector For connecting the probe’s Oxygen
sensor.
Heater Connector For connecting the probe’s heater
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Percent Oxygen Analyzer Operational Theory
Operational Theory
2.1 Introduction
The analyzer is composed of two subsystems:
1. Oxygen probe
2. Control unit with signal processing, display and controls
The oxygen probe can be heated or unheated. It delivers the sample gas to a state-of-the-art zirconium sensor which translates the amount of oxygen present into a millivolt output.
The control unit processes the sensor output and translates it into electrical concentration, range, and alarm outputs, and a percent oxygen meter readout. It contains a micro-controller that manages all signal processing, input/output, and display functions for the analyzer.
2.2 Oxygen Probe, Sensor, and Heater
TI/AI oxygen probes and sensors employ state-of-the-art zirconia sensors and advanced materials. They provide the following benefits:
Improved control due to fast response time—typically less than
four seconds.
Cost-efficient design provides improved reliability.
Longer-life probes with greater resistance to corrosion from
sulphur and zinc contaminants in a flue gas.
Low cost replacement reduces maintenance.
Reduced probe breakage due to greater resistance to thermal
shock and mechanical damage during installation and startup.
The 9060L probes or sensors are simple to install and maintain. All models provide direct measurement of oxygen level. Figure 2-1 shows a typical oxygen probe. Probe specifications are listed in the Appendix of this manual and installation is covered in Section 3.
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Operational Theory Model 9060L
All Teledyne oxygen probe or sensors are designed and manufactured to exacting standards of performance and reliability and are the result of extensive research and development. Teledyne Analytical Instruments provides worldwide application and after sales support for its oxygen probes, sensors and analyzers.
Figure 2-1: Model 9060L Oxygen Probe
The probe assembly provides a means of exposing the zirconia sensor to the atmosphere to be measured with sensor. It also provides for means of interfacing the sensor, thermocouple and heater wires with the control unit. Reference air is fed via the top plug for unheated probes or by a separate gas thread connection for heated probes. Connections are provided on probes for an in-situ gas calibration check. If required, an air purge can be admitted via the calibration gas check entry. The outer sheath of probes is either metal or ceramic, depending on the application. Calibration check can be achieved on 9060LEX sensors using a three way solenoid which blocks the sample and at the same time admits a calibration gas to the sensor. As mentioned above, probe purging for removing any dust build up can be achieved in the same way.
In-situ zirconia oxygen probes will give a lower oxygen reading than a sampled gas measurement on a chromatograph or paramagnetic analyzer because the flue gas contains a significant level of water vapor and a sampling system removes the water vapor through condensation. The oxygen content then appears as a higher percentage of the remaining gas. For example: If the gas contained five parts oxygen and fifteen parts moisture, removing the moisture would leave the oxygen at
5.88%. This phenomena will depend on the fuel and the completeness of combustion. They are common to all zirconia oxygen sensors.
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