Introduction; Method Of Operation - Teledyne 356WA Instruction Manual

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The Teledyne Analytical Instruments Model 356WA Trace Oxygen
Analyzer is designed to detect oxygen concentrations in process streams. It
utilizes Teledyne's patented electrochemical sensor which requires minimal
maintenance and exhibits a 90% response in less than one minute. Cell
output is insensitive to flow rate changes within the operating range of the
analyzer's flowmeter.
The Model 356WA features a welded stainless sampling system for
long-term, leak-free operation.
While the analyzer is offered in several configurations, they are virtually
identical with the exception of housing or options such as special meters. For
purposes of clarity, this manual will discuss the unit in general. The differ-
ences between the configurations are minor and will be obvious to the user.
Gas from the process stream is fed through a sample line to the sample
inlet port of the analyzer. The sample is directed through the analyzer's
sample system, where oxygen concentration is detected by the sensor. The
sensor generates an output signal which is read out on a suitable recorder or
meter.
The analyzer components include:
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Introduction

Introduction Introduction
Introduction Introduction
1.1 1.1 1.1

Method of Operation

Method of Operation Method of Operation
1.1 1.1 Method of Operation Method of Operation
A throttle valve and flowmeter to control sample flow
A humidifier to condition the sample
The measuring cell where catalytic conversion occurs
An electronic amplifier circuit for converting the output of the
cell to a DC signal.
A thermostatic assembly for temperature control in the cell
compartment
A reservoir for providing make-up water to the humidifier.
Teledyne Analytical Instruments
Introduction 1 Introduction 1 Introduction 1
Introduction 1 Introduction 1
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