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Trace Oxygen Analyzer
OPERATING INSTRUCTIONS FOR
Model 3190Z
Trace Oxygen Analyzer
P/N M3190Z
6/09/09
DANGER
Toxic gases and or flammable liquids may be present in this monitoring system.
Personal protective equipment may be required when servicing this instrument.
Hazardous voltages exist on certain components internally which may persist
for a time even after the power is turned off and disconnected.
Only authorized personnel should conduct maintenance and/or se
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Model 3190Z Copyright © 2009 Teledyne Instruments/ 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 Instruments / Analytical Instruments, 16830 Chestnut Street, Cit
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Trace Oxygen Analyzer Safety Messages Your safety and the safety of others is very important. We have provided many important safety messages in this manual. Please read these messages carefully. A safety message alerts you to potential hazards that could hurt you or others. Each safety message is associated with a safety alert symbol. These symbols are found in the manual and inside the instrument. The definition of these symbols is described below: GENERAL WARNING/CAUTION: Refer
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Model 3190Z CAUTION: THE ANALYZER SHOULD ONLY BE USED FOR THE PURPOSE AND IN THE MANNER DESCRIBED IN THIS MANUAL. IF YOU USE THE ANALYZER IN A MANNER OTHER THAN THAT FOR WHICH IT WAS INTENDED, UNPREDICTABLE BEHAVIOR COULD RESULT POSSIBLY ACCOMPANIED WITH HAZARDOUS CONSEQUENCES. This manual provides information designed to guide you through the installation, calibration operation and maintenance of your new analyzer. Please read this manual and keep it available. Occasionally, some
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Trace Oxygen Analyzer Table of Contents Safety Messages .......................................................................... iii Introduction ................................................................................... 1 1.1 Overview 1 1.2 Main Features of the Analyzer 1 1.3 Front Panel Description 2 1.4 Rear Panel Description 3 Operational Theory ....................................................................... 7 2.1 Introduction 7 2.2 Zirconium Oxide Sensors
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Model 3190Z 4.3.2 LO Range 19 4.4 Setting the Alarm Setpoints 19 4.4.1 HI Alarm 19 4.4.2 LO Alarm 19 4.4.3 Sensor Fail Alarm 20 4.5 Selecting a Fixed Range or Autoranging 20 4.6 Calibration 20 4.7 LED Display on StartUp 21 Maintenance ................................................................................ 23 5.1 Replacing the Fuse 23 5.1.1 AC Powered Units 23 5.1.2 DC Powered Units 24 5.2 Sensor Installation or Replacement 24 5.2.1 When to Replace a Sensor 24 A.1 Speci
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Trace Oxygen Analyzer DANGER COMBUSTIBLE GAS USAGE WARNING This is a general purpose instrument designed for use in a non-hazardous area. It is the customer's responsibility to ensure safety especially when combustible gases are being analyzed since the potential of gas leaks always exist. The customer should ensure that the principles of operating this equipment are well understood by the user. Misuse of this product in any manner, tampering with its components, or
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Model 3190Z (This page intentionally left blank) Teledyne Analytical Instruments viii
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Trace Oxygen Analyzer Introduction Introduction 1.1 Overview The Teledyne Electronic Technologies Analytical Instruments (TETAI) Model 3190Z is a microprocessor-based trace oxygen analyzer for real-time measurement of trace amounts of oxygen in inert gases, or in a wide variety of gas mixtures. It features simple operation, fast response, and a compact, rugged construction. 1.2 Main Features of the Analyzer The main features of the analyzer include: • High resolution, accurate re
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Introduction Model 3190Z • Compact and rugged control unit with flush-panel case. Designed for indoor use. Front panel NEMA-4 rated. • External probe 1.3 Front Panel Description All controls and displays except the power switch are accessible from the front panel. See Figure 1-1. The front panel has seven pushbutton membrane switches, a digital meter, and an alarm indicator LED for operating the analyzer. These features are described briefly here and in greater detail in Chapter
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Trace Oxygen Analyzer Introduction Data Entry Keys: Two pushbutton membrane switches are used to manually change measurement parameters of the instrument as they are displayed on the LED meter readout: Up Arrow Increment values of parameters upwards as they are displayed on the LED readout. • Down Arrow Increment values of parameters downwards as they are displayed on the LED readout. Digital LED Readout: The digital display is a LED device that produces large, bright, 7-segment
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Introduction Model 3190Z Figure 1-2 Rear Panel (AC and DC versions) Power Connection AC version: 100–240 VAC, 50/60 Hz. The connector housing includes the fuse holder and the power switch. DC version: Requires 10 - 36 VDC. Fuse Holder: Replacing the fuse is described in Chapter 5 - Maintenance. Teledyne Analytical Instruments 4
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Trace Oxygen Analyzer Introduction I/O Power Switch: Turns the instrument power ON (I) or OFF (O). • Analog Outputs 0–10 VDC concentration output. 0–10 VDC Range ID (or optional over-range) output. 4–20 mADC concentration output, negative ground. • Alarm Connections HI Alarm, LO Alarm, and Sensor Failure Alarm connections. • RS-232 Port Serial digital output of concentration and range signals. • External Probe Connects to the remote probe or remote analysis unit. Te
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Introduction Model 3190Z (This page intentionally left blank) Teledyne Analytical Instruments 6
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Trace Oxygen Analyzer Operational Theory Operational Theory 2.1 Introduction The analyzer is composed of three subsystems: 1. Analysis unit with zirconium oxide sensor(s) 2. Control unit with signal processing, display and controls 3. Interface unit, supplying signals between 1 and 2. The analysis unit is designed to accept the sample gas and direct it to the sensitive surface of the zirconium oxide sensor. The control unit processes the sensor output and translates it into an e
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Operational Theory Model 3190Z The sensor is designed for long term stability with an operating life of 5 years. This unit features one or two sensors, and can be custom-designed for a specific range of oxygen analysis. 2.2.2 The Effect of Pressure In order to state the amount of oxygen present in the sample as a specific portion of the gas mixture, it is necessary that the sample diffuse into the sensors under constant pressure. If the total pressure increases, the rate that ox
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Trace Oxygen Analyzer Operational Theory 2.3.2 Signal Processing Figure 2-4 is a block diagram of the signal processing electronics described below. Figure 2-4: Block Diagram of the Signal Processing Electronics In the presence of oxygen, the sensor(s) produce a current. A current to voltage amplifier (I–E AMPL) converts this current to a voltage. The output from the I-E amplifier and subsequent buffer circuit (not shown) is sent to an analog to digital converter (ADC), and
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Operational Theory Model 3190Z RS-232 (optional) output. The same digital information is also sent to a 8-bit digital to analog converter (DAC) that produces the 0-10 VDC analog concentration signal and the 0-10 VDC analog range ID output. A current to voltage converter (E–I CONV) produces the 4-20 mADC analog concentration signal. Teledyne Analytical Instruments 10
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Trace Oxygen Analyzer Installation Installation Installation of the analyzer includes: 1. Unpacking the system. 2. Mounting the control unit and external sample block. 3. Making the electrical connections. 4. Making the gas connections. 5. Testing the installation. CAUTION: READ THIS CHAPTER IN ITS ENTIRETY BEFORE INSTALLING THE UNITS. THE MODEL 3190Z IS FOR INDOOR USE ONLY. THE SAMPLE MUST BE FREE OF ENTRAINED SOLIDS, WATER, OR COMBUSTIBLE COMPOUNDS. 3.1 Unpacking th
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Installation Model 3190Z 3.2 Location and Mounting 3.2.1 Control Unit Installation The 3190Z control unit is designed to be panel-mounted in a general purpose, indoor area, away from moisture and the elements. The unit should be installed at viewing level in a sheltered area. CAUTION: FOR THE DC POWERED VERSION, THE CONTROL UNIT CHASSIS MUST BE ISOLATED FROM THE INPUT POWER GROUND. Refer to the Outline Diagram for the physical dimensions of the analyzer, which can be found at the
