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Teledyne Analytical Instruments
Model OT-2 System Introduction 1
Introduction
1.1 Overview
The Teledyne Analytical Instruments Model OT-2 System is
designed to accurately monitor the oxygen content in a wide
variety of gases at the ppm level. The Trace Oxygen Transmitter
is equipped with two oxygen analysis ranges, 0–10 ppm and 0–
100 ppm (0-100 ppm and 0-1000 ppm optional). The OT-2
System is acceptable for operation in Class 1, Division 2, Groups
B, C, and D hazardous environments, when used in conjunction
with a non-insendive power source, such as the Elsag Baily Total
Flow
TM
System.
The heart of the OT-2 System is Teledyne Analytical Instru-
ments' Micro-Fuel Cell oxygen sensor. This cell is a sealed elec-
trochemical device which translates the amount of oxygen
present in a sample into an electrical current. Since it is sealed,
there is no electrolyte to change or electrodes to clean and
therefore, virtually maintenance free.
The transmitter operates from a 12VDC (nominal) power
source and produces a 1-5VDC voltage output that is directly
and linearly proportional to the oxygen concentration. The
output voltage is used to interface with high input impedance
(>10 Kilo ohms) devices such as recorders, alarms, computers or
other voltage driven devices.
1.2 Features
The following features describe the basic model. The exact
configuration depends on the options selected at the time of
purchase.
• Two analysis ranges: 0–10 ppm and 0-100 ppm (0-100
ppm and 0-1000 ppm optional) user selectable
• High sensitivity (0.5% FS)
• Digital O
2
concentration display