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 process that the instrument is intended to monitor; 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 can be misused. In
particular, any alarm or control system 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 conditions inherent in the
process(es) he uses. He is responsible for training his 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 condi-
tions beyond its knowledge and control. No statement expressed or implied by this
document or any information disseminated by the manufacturer or his agents is to
be construed as a warranty of adequate safety control under the user’s process
conditions.
Spare Parts List................................................................... 16
Drawing List ........................................................................ 17
Material Safety Data Sheet ............................................ 18
TELEDYNE ANALYTICAL INSTRUMENTS
TELEDYNE ANALYTICAL INSTRUMENTS
Trace Oxygen AnalyzerModel 316RA/RB/RAD/RBD
Introduction
The Teledyne Analytical Instruments (TAI) Series 316 Trace Oxygen
Analyzer uses a unique Micro-Fuel Cell to measure the concentration of
oxygen in a gas stream. The cell has an absolute zero and produces a linear
output from the low parts per million (ppm) level through 21% (210,000
ppm) oxygen. When coupled with a “state of the art” two stage amplifier
system that incorporates operational amplifiers, the cell provides linear
trace oxygen analysis in the standard ranges of 0-10, 0-100, 0-1000, and 010,000 ppm. The cell is specific for oxygen and is not influenced by
sample flow rate or the presence of hydrocarbons or halogenated hydrocarbons. The instrument may be calibrated with air, eliminating the need for
certified trace oxygen calibration gases.
sensor is a sealed electrochemical transducer with no electrolyte to change
or electrodes to clean. When the cell reaches the end of its useful life (6
months minimum), simply remove and replace.
Temperature Compensation. The Series 316 includes a built-in
temperature compensation circuit for greater accuracy.
Meter Readout. The Series 316 is equipped with an accurate (± 0.5%
linearity) panel meter which gives direct readout of the analysis. A linear
100-division scale or digital panel meter gives reliable, accurate readout of
the analysis at any point on the scale.
Output Signal. For applications requiring a continuous recording of
the sample oxygen, a linear output signal from 0-1 mVDC to 0-1 VDC is
available at no extra charge.
Multiple Ranges of Analysis. The Series 316 provides 4 standard
ranges of analysis: 0-10, 0-100, 0-1,000 ppm, 0-10,000 ppm, plus a CAL
range, which allows instrument calibration using air.
Speed of Response. Fast upscale response is a key feature of the
Series 316. On the 0-1,000 and 0-10,000 ppm ranges, 90% response time is
less than 10 seconds (at constant temperature).
Compact Packaging. The Series 316 includes an integral throttle
valve, flowmeter, and shutoff valve in a package that uses little more than
10" × 10" of panel space. Access to the major components of the system is
gained by opening the front panel door of the instrument case. The microfuel cell manifold assembly mounts within the interior, permitting cell
replacement without the use of tools.
Panel or Bulkhead Mounting. Two standard versions of the Series
316 Series are available. A panel mounted enclosure houses the Model
316RA, and a wall mounted bulkhead enclosure houses the Model 316RB.
Both versions share the same features and performance.
Optional Features
Current Output Signal. Grounded or isolated outputs (i.e., 4-20
mADC, 1-5 mADC, 10-15 mADC) can be included in the Series 316 for
interface to external devices, such as computers, recorders, etc.
Integral Alarm Circuitry. The Series 316 provides independently
adjustable control circuits for one or two alarms. The alarms are fully
adjustable throughout the scale using the front panel controls.
2
TELEDYNE ANALYTICAL INSTRUMENTS
Trace Oxygen AnalyzerModel 316RA/RB/RAD/RBD
Operational Theory
Micro-Fuel Cell Sensor
The Series 316 uses a Micro-Fuel Cell for the measurement of trace
oxygen. This Micro-Fuel Cell is an electrochemical transducer whose
features include:
•Specificity for oxygen
•Long interval between calibration
•Long life
•Low maintenance
•Disposable configuration
The transducer functions as a fuel cell; in this instance, the fuel is
oxygen. Oxygen diffusing into the cell reacts chemically to produce an
electrical current that is proportional to the oxygen concentration in the gas
phase immediately adjacent to the cell’s sensing surface.
Sampling System
The Series 316 contains a throttle valve and flowmeter for sample
path flow control as shown on the Piping Diagram (dwg. B-9051). The
integral flow path also features a shutoff valve located downstream from
the Micro-Fuel Cell manifold. When closed, these two valves isolate the
cell from the high oxygen concentration of air. Before shipment, the
sample system is purged with either the customer’s background gas (when
practical) or an inert gas, such as nitrogen. When the instrument shows a
stable, low ppm oxygen level, the two valves are closed, maintaining the
cell in a virtually oxygen-free atmosphere until the instrument is installed
and ready for use.
NOTE: To shorten start-up time and conserve cell use, keep the two cell
valves closed until installation is complete and sample is flowing.
TELEDYNE ANALYTICAL INSTRUMENTS
3
Model 316RA/RB/RAD/RBD Trace Oxygen Analyzer
Installation
Precautions
1. Upon receipt of the Series 316 Oxygen Analyzer, inspect the
entire unit. Read the entire installation section before
installing the analyzer.
2. Do not scratch, puncture, or damage the mesh sensing
membrane of the Micro-Fuel Cell. Damage to the membrane
will require replacement of the sensor.
3. The Micro-Fuel Cell electrolyte is caustic. Avoid contact with
any fluid or powder in or around the cell or unit. Do not let it
come in contact with skin. If it does, immediately flush affected
area with water. Consult the Emergency First Aid procedures in
the Material Safety Data Sheet at the end of the manual. Do not
attempt to open or repair the sensor. Leaking or exhausted
sensors should be disposed of in accordance with local
regulations. Consult the Material Safety Data Sheet at the end
of the manual.
4. The Micro-Fuel Cell must be installed before operating the
Series 316.
5. The throttle valve and the shutoff valve should remain closed
until the analyzer is installed and ready to use.
6. All accessory hardware and fittings upstream from the analyzer
should be leak-tested under pressure before start-up to prevent
false readings upon start-up.
7. Check electrical wiring installation against the Interconnection
Diagram (dwg. A-33140) before start-up to prevent accidental
wiring transposition.
4
TELEDYNE ANALYTICAL INSTRUMENTS
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