Teledyne operating instructions Model OT-2 System Introduction

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Model OT-2 System

Introduction 1

 

 

 

 

 

 

Introduction

1.1Overview

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.

1.2Features

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 O2 concentration display

Teledyne Analytical Instruments

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Contents Model OT-2 Oxygen Transmitter System Copyright 1999 Teledyne Analytical Instruments Model OT-2 SystemTable of Contents Ground Model OT-2 System Introduction Introduction Model OT-2 System Front View Introduction Model OT-2 System Introduction Model OT-2 System Operational TheoryMicro-Fuel Cell Sensor Principles of Operation Operational Theory Model OT-2 SystemCross Section of a Micro-Fuel Cell not to scale Electrochemical Reactions Model OT-2 System Operational Theory Characteristic Input/Output Curve for a Micro-Fuel Cell Electronics and Signal Processing Sample Flow Description See Figure Piping Layout Operational Theory Model OT-2 System Model OT-2 System Operation InstallationMounting Details Operation Model OT-2 SystemGas Connections Operation Model OT-2 System Front View of Transmitter Calibration Operation Model OT-2 System Installing the Micro-Fuel CellSample System Component Locations Span Gas % F.S. x 4 + = Output in VDC 100 3 H2S Scrubber Testing the SystemOperation Model OT-2 System Model OT-2 System Maintenance Model OT-2 System Scrubber Replacement Maintenance Model OT-2 System Appendix Qty Part Number Description Section I Product Identification Section III Physical Hazards Section V Emergency and First Aid Procedures Appendix