Teledyne 329R User Manual
MODEL
329R
OXYGEN DETECTOR
INSTRUCTION MANUAL
TELEDYNE ANALYTICAL INSTRUMENTS
P/N M57726.02
8/24/94
Copyright © 1992 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 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
91749-1580.
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. The Micro-Fuel
Cell warranty period begins on the date of shipment from Teledyne. 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 Teledyne 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 is intended to be used as a tool to gather valuable data. The information
provided by the instrument may assist the user in eliminating potential hazards caused by the user’s
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 Teledyne when the order is placed.
The purchaser must be aware of the hazardous process conditions inherent in the process(es) he
uses. He 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.
TAI, 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.
TELEDYNE ANALYTICAL INSTRUMENTS
Table of Contents
1.0 Introduction
Main Features ............................................................................................... 1
Micro-Fuel Cell ............................................................................................ 2
E-2 Cell Warranty Conditions ...................................................................... 2
2.0 Installation & Operation
Precautions.................................................................................................... 3
Location & Mounting ................................................................................... 3
Analysis Unit Connection............................................................................. 4
AC Power ..................................................................................................... 4
DC Power ..................................................................................................... 4
Output Signals .............................................................................................. 4
Alarm Terminal Connection......................................................................... 5
Sensor Installation or Replacement .............................................................. 5
Setting Alarms .............................................................................................. 6
Calibration .................................................................................................... 7
3.0 Maintenance
Replacing the Fuse........................................................................................ 9
Replacing the Sensor .................................................................................... 10
E-2 Cell Warranty Conditions ...................................................................... 11
Appendix
Specifications................................................................................................ 13
Spare Parts List............................................................................................. 14
Drawing List................................................................................................. 15
Material Safety Data Sheet........................................................................... 16
TELEDYNE ANALYTICAL INSTRUMENTS
TELEDYNE ANALYTICAL INSTRUMENTS
329R Introduction 1.0
Introduction
The Teledyne Analytical Instruments Model 329R Oxygen Detector
measures the percent of oxygen in a wide range of gases and gas mixtures.
Modular and compact design provide outstanding performance and reliable
on-line monitoring and make the 329R virtually maintenance-free.
A special range on the 329R enables you to calibrate in ambient air.
The Micro-Fuel Cell produces an output that corresponds linearly to the
oxygen concentration; the absence of oxygen produces zero current. This
means you can use ambient air (20.9% oxygen) to calibrate, eliminating
the need for special span gases.
The Model 329R contains a main PC board and power supply/interconnection board housed in a rack mount enclosure. The oxygen probe can
be separated from the unit by as much as 6 feet, depending on the level of
electromagnetic noise in the operating environment.
Main Features
1. Two Ranges of Analysis. The Model 329R Oxygen Monitor
features two analysis ranges: 0-3% and 0-10%. A 0-25% range is accessible only during calibration to allow calibration in air. Optional 0-1%, 025%, and 0-100% ranges are available.
2. Liquid Crystal Display Digital Readout. The digital front panel
LCD continuously displays and updates O2 monitoring levels and displays
values when calibrating the instrument and setting the alarms.
3. Percent of Range Alarms. Three (3) alarm relays are provided:
one high and one low alarm, which are user adjustable, and one low alarm,
factory set as a cell fail alarm at 2% of full scale.
4. Proven Sensor. The 329R uses the Class E-2 Micro-Fuel Cell,
warranted for 24 months, with a life expectancy of 48 months.
TELEDYNE ANALYTICAL INSTRUMENTS
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1.0 Introduction 329R
5. Analog Voltage Output. The Model 329R provides customer
connections to external devices, such as computers, recorders, alarms, etc.,
at 0–10 VDC, negative ground, plus contact closures for range identification. Custom voltage outputs, either grounded or isolated, are available as
options.
6. Analog Current Output. The Model 329R has a 4–20 mA current
output suitable for connection to external devices that use a 4–20 mA
input. A 0–20 mA current output, either grounded or isolated, is available
as an option.
7. Over-Range/Cell Failure Visual Indicator. The model 329R has
a LED (Light Emitting Diode) to the left of the Liquid Crystal Display.
The LED will blink when the oxygen reading exceeds 105% of scale, or a
cell failure alarm is activated.
Micro-Fuel Cell
The Model 329R uses a Class E-2 Micro-Fuel Cell. The Micro-Fuel
Cell measures the concentration of oxygen in a gas stream. The analysis is
specific for oxygen; i.e. the measuring cell will not generate an output
current unless oxygen is present in the sample gas. Therefore, the analyzer
has an absolute zero, and requires no zero gas. Span calibration is performed with atmospheric air as the span gas.
To eliminate any inaccuracies due to the positive temperature coefficient of the Micro-Fuel Cell, a thermistor circuit and network of precision
resistors produce a negative coefficient of matching characteristics. The
variable element (thermistor) in the compensation network is in the same
assembly as the Micro-Fuel Cell, exposing both devices to the same temperature conditions.
Warranty Conditions
Customers having warranty claims must return the cell in question to
the factory for evaluation. If it is determined that failure is due to faulty
material or workmanship the cell will be replaced free of charge.
CAUTION: Evidence of tampering or abuse will render the warranty null
and void.
If a cell is working satisfactorily, but fails short of its warranty period,
the customer will receive credit, on a pro-rated basis, towards the purchase
of a replacement cell.
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TELEDYNE ANALYTICAL INSTRUMENTS
329R Installation & Operation 2.0
Installation & Operation
Precautions
1. Read this chapter in its entirety before installing the unit.
2. Upon receipt of the instrument, inspect the entire unit for
damage. Notify the shipper if any damage is found. Check the
unit, probe, and included accessories for broken or loose parts.
3. The sample must be free of entrained solids and water. A high
humidity sample is ideal since it will prevent water loss from
the cell electrolyte.
4. The Micro-Fuel Cell sensor electrolyte is caustic. Do not
attempt to open or repair the sensor. Leaking or exhausted
sensors should be disposed of in accordance with local
regulations. Please refer to the Material Safety Data Sheet in the
Appendix to learn about potential hazards and corrective action
in case of accident.
5. Do not scratch, puncture, or damage the sensing membrane of
the Micro-Fuel Cell sensor. Damage to the membrane will
require replacement of the sensor.
Location & Mounting
The unit is designed to be panel-mounted in a general purpose area,
away from moisture and the elements. The unit should be installed at
viewing level in a sheltered area.
Refer to the Outline diagram (dwg. C-57490) for the physical dimensions of the analyzer.
TELEDYNE ANALYTICAL INSTRUMENTS
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