Teledyne 3160 User Manual
OPERATING INSTRUCTIONS FOR
Model 3160
Trace Oxygen Analyzer
DANGER
HIGHLY TOXIC AND OR FLAMMABLE LIQUIDS OR GASES MAY BE PRESENT IN THIS MONITORING SYSTEM.
PERSONAL PROTECTIVE EQUIPMENT MAY BE REQUIRED WHEN SERVICING THIS SYSTEM.
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 SERVICING. BEFORE
CONDUCTING ANY MAINTENANCE OR SERVICING CONSULT WITH AUTHORIZED SUPERVISOR/MANAGER.
TELEDYNE ANALYTICAL INSTRUMENTS
P/N M52972
ECO# 99-0323
08/06/99
i
Copyright © 1999 Teledyne 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 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,
instrument or its interface with the process being measured be properly trained in the process itself,instrument or its interface with the process being measured be properly trained in the process itself,
instrument or its interface with the process being measured be properly trained in the process itself,
instrument or its interface with the process being measured be properly trained in the process itself,instrument or its interface with the process being measured be properly trained in the process itself,
as well as all instrumentation related to it.as well as all instrumentation related to it.
as well as all instrumentation related to it.
as well as all instrumentation related to it.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.
Teledyne Analytical Instruments, the manufacturer of this instrument, cannot accept responsibility for
conditions beyond its knowledge and control.
or any information disseminated by the manufacturer or his agents is to be construed as a warrantyor any information disseminated by the manufacturer or his agents is to be construed as a warranty
or any information disseminated by the manufacturer or his agents is to be construed as a warranty
or any information disseminated by the manufacturer or his agents is to be construed as a warrantyor 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.of adequate safety control under the user’s process conditions.
of adequate safety control under the user’s process conditions.
of adequate safety control under the user’s process conditions.of adequate safety control under the user’s process conditions.
it is essential that all personnel involved in the use of theit is essential that all personnel involved in the use of the
it is essential that all personnel involved in the use of the
it is essential that all personnel involved in the use of theit is essential that all personnel involved in the use of the
No statement expressed or implied by this documentNo statement expressed or implied by this document
No statement expressed or implied by this document
No statement expressed or implied by this documentNo statement expressed or implied by this document
ii
TELEDYNE ANALYTICAL INSTRUMENTS
TELEDYNE ANALYTICAL INSTRUMENTS
iii
1 Introduction
1.1 Features ....................................................................................... 1-1
1.2 Components ................................................................................. 1-3
1.3 Options and Model Numbers ........................................................ 1-3
1.4 Applications ................................................................................. 1-4
2 Operational Theory
2.1 Principles of Operation ........................................................... 2-1
3 Installation
3.1 Unpacking the Analyzer ................................................................ 3-1
3.2 Front Panel ................................................................................. 3-1
3.3 Rear Panel ................................................................................... 3-2
3.4 Gas Line Connections ................................................................... 3-4
3.5 Micro-Fuel Cell Installation or Replacement .................................. 3-5
3.6 Electrical Connections ............................................................. 3-6
3.7 Installation Checklist ..................................................................... 3-10
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1.1.1 Fixed Features .............................................................. 1-1
1.1.2 Variable Features ......................................................... 1-1
2.1.1 Micro-Fuel Cell Sensor ................................................. 2-3
2.1.2 Sample System .............................................................. 2-3
2.1.3 Electronics and Signal Processing ............................. 2-5
Range Identifier Table ....................................................... 2-7
3.4.1 Span Gas In .................................................................. 3-4
3.4.2 Instrument Air ................................................................ 3-4
3.4.3 Sample Gas In ............................................................... 3-4
3.4.4 Vent .............................................................................. 3-4
3.6.1 Voltage Selection .......................................................... 3-7
3.6.2 Fuse Changing .............................................................. 3-8
3.6.3 Parallel and Serial Ports .......................................... 3-9
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4 Operations
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4.1 Front Panel Controls ..................................................................... 4-1
4.1.1 Spinning Wheel ............................................................. 4-2
4.1.2 Cell Output Factor ........................................................ 4-2
4.2 Modes of Operation ..................................................................... 4-2
Cold Start-Up ........................................................................ 4-5
(continued)
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5 Maintenance & Troubleshooting
5.1 Routine Maintenance .................................................................... 5-1
5.2 Troubleshooting ............................................................................ 5-2
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Calibration Zeroing ........................................................... 4-6
Calibration Using Span Gas .............................................. 4-8
Select Active Sensor (Two Cells Only) ............................. 4-11
Install Sensor and Test Alternate Sensor .... (Two Cells Only) . . 4-12
O2 Range Set-Up .................................................................. 4-14
Set-up Alarms ........................................................................ 4-15
Logger Set-Up ....................................................................... 4-17
Set-Up Clock Functions ......................................................... 4-19
Changing Passwords For Remote
Monitoring and Control ......................................... 4-21
System Statistics ..................................................................... 4-23
5.1.1 Sensor Maintenance ............................................... 5-1
5.1.2 Scrubber Maintenance .................................................. 5-1
ued)ued)
ued)
ued)ued)
Appendix
A-1 Specifications Sheet ................................................................ A-1
A-2 Recommended Spare Parts List .............................................. A-2
A- 3 Drawing List ........................................................................... A-3
A-4 Material Safety Data Sheet ..................................................... A-4
A-5 Material Safety Data Sheet ..................................................... A-5
TELEDYNE ANALYTICAL INSTRUMENTS
v
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TELEDYNE ANALYTICAL INSTRUMENTS
Introduction 1Introduction 1
Introduction 1
Introduction 1Introduction 1
Introduction
1.1 Features
1.1.1 Fixed Features
The Model 3160 is a microprocessor-based trace oxygen monitoring system that
provides on-line monitoring of trace oxygen at parts-per-million (PPM) levels and can
directly measure the level of purity in high-grade gases.
The 3160 computer uses an Intel® 80188 microprocessor combined with 32
kilobytes of random access memory (RAM) and 128 kilobytes of read-only memory
(ROM). The total computer program resides in the ROM and is not affected by shutdown periods, loss of power, or battery failure. However, calibration parameters and
stored measurement readings are retained in battery-backed-up RAM, which require
continuous battery voltage in order to be retained. This information will be lost if
battery power is interrupted, as in battery replacement.
Two displays help you monitor trace oxygen levels: a red 4-digit light emitting
diode (LED) display with one-inch numerals is easily read at a distance or even in
bright daylight, and a liquid crystal display (LCD) helps you keep track of alarm
setpoints, ranges, mode and system statistics.
1.1.2 Variable Features
Various models are available. The following features describe the basic model,
but the exact configuration depends on the standard options incorporated. Paragraph
1.3 contains a list of standard variations on the basic model.
The Class B-2 Micro-Fuel Cell measures trace O2 in a mixture of gases. Because
the Micro-Fuel Cell sensor is a sealed electrochemical device, it is replaced as a unit.
There are no electrolytes to change or electrodes to clean, making the sensor maintenance free. The analyzer can be configured with one or two sensor blocks. Each block
can be isolated by pneumatically switched valves. The software automatically adjusts
when a second cell block is present.
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1 Introduction
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The 3160 features six full-scale linear ranges of analysis:
• 0–1 PPM
• 0–10 PPM
• 0–100 PPM
• 0–1000 PPM
• 0–1%
• 0–25%
An AutoRanging feature automatically selects the range that is appropriate for a
given reading. For example, if the O2 level exceeds 100% of the current range, the
analyzer switches to the next higher range. When desired, a manual override feature
allows a particular range of interest to be locked-in.
With the AutoSpan feature, the analyzer automatically calibrates at scheduled
intervals, and automatically performs electronic zeroing and sensor settling detection
during calibration.
Five user-programmable absolute-reading (PPM) alarm setpoints with assignable
Form 1C (SPDT) relays are provided, along with a RS-232C bidirectional serial data
port, and four signal outputs for chart recorders, etc. The
RS-232 serial port can be used with or without a modem to connect with
• a personal computer loaded with the Teledyne Remote Analytical
Control Software (TRACS)
• any terminal or terminal emulation software
• a custom computer program
Several analyzer functions, including troubleshooting, can be run from your PC
through the phone line to the analyzer.
The analyzer has separate sample and span gas ports, which allow the installation
of an external source of span gas for calibration without interfering with the sample
gas line.
An optional scrubber installed into the sample system allows sample gas to be
used as a zero gas after treatment with the scrubber. If the scrubber is installed, pneumatic valves on either side of the scrubber open automatically during zeroing.
Note: Units equipped with a scrubber should only be used with inert gases
and saturated hydrocarbons.
The analyzer output is not affected by minor changes in the flow rate. Analyzer
performance is stable under minor mechanical vibration.
1-2
TELEDYNE ANALYTICAL INSTRUMENTS
Introduction 1Introduction 1
Introduction 1
Introduction 1Introduction 1
1.2 Components
The analyzer is designed to mount in a standard 19-inch rack. All of the operational controls are easily accessed through the front panel. The analyzer contains each
of the following:
• Analysis Section
• Single or Dual Electrochemical Micro-Fuel Cell
• Sample System
• Power Supply
• Microcontroller Module
• LED Display
The front panel consists of:
• LED Display
• LCD Display with Touch Panel
• Micro-Fuel Cell Access Panel
• Flowmeter and flow set knob
The back panel ports are:
• Gas Inlet/Outlet Ports
• Electrical Connections
1.3 Options and Model Numbers
The 3160 is available with the following standard options, which are designated
by a descriptive suffix on the model number. Most of the options can be combined.
• 3160SA Single fuel cell.
• 3160SB Single fuel cell and oxygen scrubber
• 3160DA Dual fuel cell
• 3160DB Dual fuel cell and oxygen scrubber
• 3160SAS Single cell and stainless steel cell block
• 3160SBS Single cell, stainless steel cell block, and oxygen scrubber
• 3160DAS Dual cell and stainless steel cell block
• 3160DBS Dual cell, stainless steel cell block, and oxygen scrubber
TELEDYNE ANALYTICAL INSTRUMENTS
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1 Introduction1 Introduction
1 Introduction
1 Introduction1 Introduction
1.4 Applications
The analyzer is an invaluable tool in the following applications and industries:
• Inert and gaseous hydrocarbon stream monitoring.
• Measuring the purity of various gases in air separation plants.
• Prevention of oxidation by measuring the purity of blanketing gases in
fiber and glass industries.
• Monitoring and controlling gas atmospheres in the heat treatment of metals
in steel and other metal industries.
• Gas analysis and research in laboratories and research and development
areas.
• Semiconductor manufacturing.
• Process monitoring of gaseous monomers—vinyl chloride, propylene,
butadiene, or ethylene.
• Gas purity certification.
• Glove box leak detection.
• Natural gas treatment and transmission.
• Inert gas welding of exotic metals.
1-4
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Operational Theory
2.1 Principles of Operation
The sub-systems that make up the analyzer are:
1. Micro-Fuel Cell Sensor
Operational Theory 2Operational Theory 2
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2. Sample System
3. Electronic Signal Processing
The Micro-Fuel Cell sensor is an electrochemical galvanic device that translates
the amount of oxygen present in the sample into an electrical current. The sample
system delivers the sample gas in a form that is as unaltered as possible for testing,
and for leak-free transport of gases through the analyzer.
The electronic signal processing unit (control module) is designed to simplify the
operation of the analyzer and accurately process the signal from various components.
The control module incorporates a microprocessor which allows the operation of the
analyzer with a minimum of operator interaction. Figure 2-1 illustrates major
components.
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2 Operational Theory2 Operational Theory
2 Operational Theory
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I
O
2-2
Figure 2-1. Major Components.
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2.1.1 Micro-Fuel Cell Sensor
The Micro-Fuel Cell is a sealed plastic disposable oxygen transducer that measures 1¼ inches in diameter and is ¾ inch thick. Inside of the cell are a cathode and
anode immersed in 15% aqueous KOH electrolyte. At one end of the sensor is a
Teflon diffusion membrane; the other end is sealed with a polyethylene membrane. At
the rear of the cell is a contact plate consisting of two concentric foils. The foils mate
with spring-loaded contacts in the sensor block assembly and provide the electrical
connection to the rest of the analyzer.
The sensing cathode, located beneath the diffusion membrane, has a surface area
of 2.48 cm2. The sample gas enters the sensor block through an inlet tube between the
cathode and the sensor block cap, diffuses through the Teflon membrane, and any
oxygen in the sample gas is reduced on the surface of the cathode by the following
mechanism:
O2 + 2H2O + 4e
––
–
––
→ 4OH
––
–
––
(cathode)
When the oxygen is reduced at the cathode, lead is simultaneously oxidized at the
anode by the following mechanism.
2Pb → 2Pb
+2
+ 4e
––
–
––
(anode)
The electrons released at the surface of the anode flow to the cathode surface via
an external circuit. This current is proportional to the amount of oxygen. It is measured and used to determine the oxygen concentration in the gas mixture.
The overall reaction for the fuel cell is:
2Pb + O
→ 2PbO
2
The output of the fuel cell is limited by the amount of oxygen in the cell at any
one time, and the amount of stored anode material. In the absence of oxygen, there is
no current generated.
2.1.2 Sample System
The sample system delivers gases to the Micro-Fuel Cell sensor from the analyzer rear panel inlet. Depending on the mode of operation either a sample or zero gas
is delivered.
The Model 3160 sample system is designed and fabricated to ensure that the
oxygen concentration of the gas is not altered as it travels through the sample system.
The following list of sample system and analyzer features are among those
available, but the exact configuration depends on the standard options incorporated.
Paragraph 1.3 contains a list of the standard variations on the basic model.
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2 Operational Theory2 Operational Theory
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• Electropolished 316L-type stainless steel components.
To eliminate oxygen absorption and desorption from the internal
wetted surfaces of the sample system components, the sample system is
fabricated from electropolished 316L-type stainless steel.
• Welding/Metal Gasket-Type Fittings.
All of the joints upstream of the Micro-Fuel Cell oxygen sensor are
orbitally welded. Orbital welding is used in the sample system
wherever feasible. Orbital welding fuses the electropolished 316L
stainless steel components together, forming a smooth, clean internal
(wetted) weld junction and eliminating small spaces around the weld
junction where gases can get trapped or absorbed. All of the weld
junctions in the entire assembly are purged using an inert gas during
welding to ensure that there is no oxygen contamination.
Orbital welding is used where practical; otherwise, conventional
precision welding is used. For example, conventional precision welding
is used to fuse the tubes to the mounting blocks.
• Valves.
The analyzer sampling system utilizes three different types of valves.
Each valve is selected to prevent oxygen contamination of the sample
depending on its position and purpose in the circuit.
Air-Actuated Bellows Valves: These valves are normally closed in the
sample system. They are used to control the delivery through the sample
system of the sample or zero gas. The valve bodies are orbitally welded in
the system and the valve bonnets make a metal-to-metal seal to the body.
This valve system eliminates inboard and outboard gas leakage. The valves
are activated (open/closed) by computer-controlled solenoid valves.
Metering Valve: The metering valve is used to manually control the
gas flow rate to the sensor. The body of the metering valve is orbitally
welded, and the bonnet is sealed to the body with metal O-rings. This type of
valve eliminates inboard and outboard gas leakage.
Solenoid Valves: The solenoid valves control the air flow to the air-
activated bellows valves. The solenoid valves are controlled by the
microprocessor module. When de-energized, the valve outlet is open to
ambient air, allowing the air-activated bellows valve to close.
• Scrubber (optional). See Appendix for details.
2-4
In systems with a scrubber, oxygen-trapping media is used to remove
any trace oxygen from the sample gas. This occurs automatically in the
zero menu, where the pneumatic valves leading to the scrubber are
triggered by a certain menu sequence. This process enables sample gas
TELEDYNE ANALYTICAL INSTRUMENTS
Operational Theory 2Operational Theory 2
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to be used to zero the analyzer, eliminating the need to switch external
tanks.
• Overall Design.
The design of the sample system minimizes the volume of dead space, which
can retain residual gas from another route or previous mode of analysis.
Figure 2-2: Model 3160 flow schematic.
2.1.3 Electronics and Signal Processing
The Model 3160 analyzer has an embedded microcomputer, which controls all
signal processing, input/output, and display functions for the analyzer. System power
is supplied from a power supply module designed to be compatible with any international power source.
The microcomputer, a liquid crystal display (LCD), and all analog signal processing electronics are located inside a replaceable control module. A light emitting
diode (LED) display is located outside the control module.
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2 Operational Theory2 Operational Theory
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Electronics in the analyzer are grouped according to function:
1. Analog in
2. Analog out
3. Digital circuit
4. Power supply
Analog signal processing is accomplished in two plug-in circuit cards operating
under control of the microcomputer. All analog signals are converted to digital early
in the processing cycle to minimize analog processing and assure maximum system
accuracy, since digital processing is much more accurate than analog and immune to
many parameters such as drift and aging.
The initial processing and digitization of the signal from the Micro-Fuel Cell
takes place on two circuit boards: the six-decade programmable printed circuit board
(PCB), and the analog input board.
The first step in the chain takes place on the six-decade programmable PCB,
which is mounted directly on top of the cell block. The output of the sensor is a
current that is linearly proportional to the oxygen concentration. At low concentrations, the current from the sensor is low, which makes the close physical proximity of
the pre-amp circuitry to the Micro-Fuel Cell necessary.
The sensor current is routed into a low-offset, low-bias current operational
amplifier configured as a current-to-voltage converter. The signal is sent through two
amplifiers to the analog input board. The pre-amp board provides sensor zeroing and a
connection to the thermistor in the sensor cell block.
The analog input PCB, which plugs into a DIN connector on the digital PCB,
performs three functions:
• Temperature compensation in the sensor signal
• Sensor offset correction
• Digitization
A thermistor inside the sensor block registers resistance and thus the temperature
of the sensor. Accordingly, an analog-to-digital converter configured as a digitallyprogrammed attenuator (DPA) is used to reduce or increase the gain of the sensor
signal, so that the signal coming out of the DPA is independent of temperature.
If the software determines that the sensor needs offsetting, the sensor current is
back-calculated and an analog-to-digital converter on the analog board is driven by the
software to produce a voltage that is used to force a current into the current-to-voltage
converter located on the pre-amp board. The current injected is equal and opposite in
polarity to the portion of the sensor current that needs offsetting.
Digitization is provided by a 12-bit analog-to-digital converter, which digitizes
the oxygen and temperature signals.
2-6
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The analog output printed circuit board (PCB) generates the two 0–1 volt and the
two 4–20 mA analog signal outputs available on the rear panel of the analyzer. These
signals, generated in digital format by the microcomputer, are converted into analog
signals by the circuitry on this PCB. The output signals represent the following:
• 0–1V Signal (Oxygen Measurement): This output goes from 0 to 1, represent-
ing 0 to 100% of the scale that has been set; i.e., 0.6 volt is equal to 60% of the full
scale, or 6 PPM when on the 10 PPM scale. It is possible that the signal may go past
zero into the negative range up to -0.25, especially if the analyzer has been zeroed
with a gas that contains a significant concentration of oxygen. See Figure 2-3.
• 0-1V Range Identifier: This 0 to 1 volt output represents each range with a
particular voltage as shown in Table 2–1.
• Isolated 4–20 mA Signal (Oxygen Measurement): This is a 4 to 20 mA output
representing 0 to 100% of the scale, with 4 mA equal to 0%, and 20 mA equal to
100% of that range. This output may also range lower than 4 mA, especially if the
analyzer has been zeroed with a gas that contains a significant concentration of oxygen. See Figure 2-3.
• Isolated 4–20 mA Range Identifier: This 4 to 20 mA output represents
individual ranges with discrete current output as shown in Table 2-1.
Table 2-1. Range Identifier
Identifier Identifier
Range Scale Voltage (V) Current(mA)
1 1 PPM 0.0 4.0
2 10 PPM 0.2 7.2
3 100 PPM 0.4 10.4
4 1000 PPM 0.6 13.6
5 1% 0.8 16.8
6 25% 1.0 20.0
Figure 2-3: Analog signal output offset
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The digital printed circuit board (PCB) is a general purpose microcomputer used
to control all functions of the analyzer. The analog input PCB and the analog output
PCB plug directly into connectors located on the digital PCB. In addition to controlling these analog PCBs, the digital board performs the following functions:
1. Processes input from the control panel pushbuttons.
2. Provides signals for the selectable alarms.
3. Processes serial I/O functions (RS-232 data). The serial interface default
and programmable parameters are listed in Table 2-2.
Table 2-2. Default and Programmable Parameters
Defaults Programmable Options
1200 Baud 1200 Baud
8 Bits 5, 6, 7, or 8 Bits
No Parity Even, Odd, or No Parity
1 Stop Bit 1 or 2 Stop Bits
4. Controls the LCD and the LED displays.
LCD: This screen is a dot-matrix display located on the control module of
the analyzer. It is the user interface for system operations. It
displays the menus and command options available for each
function.
LED: This screen is a 7-segment display located on the front panel of the
analyzer, above the control module. It displays only the oxygen
concentration. It is large and bright to allow the operator to read it
at a greater distance. A dimmer switch for this display is located on
the display PCB behind the front panel.
The analyzer power supply module is a replaceable assembly containing four
power supplies and five alarm relays. Electronic circuitry used to drive and interface
the alarm relays to the output of the microcomputer is also located inside this module.
Note: This power supply contains an International Power Entry Module. This
feature allows operation on any of four international voltage ranges:
100V, 120V, 220V or 240V (50Hz or 60Hz). It also facilitates both North
American and European fusing arrangements. Programming this module is described in the installation section of this manual.
2-8
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Installation 3Installation 3
Installation 3
Installation 3Installation 3
Installation
Installation of the analyzer includes:
1. Unpacking the system.
2. Recognizing the necessary precautions when installing the system.
3. Hooking up the sample/span gas and air supply to appropriate connections.
4. Installing the Micro-Fuel Cell sensor(s).
5. Hooking up electrical connections.
6. Testing the system.
3.1 Unpacking the Analyzer
The analyzer is shipped with all the materials and special items you need to install
and prepare the system for operation. Carefully unpack the analyzer and inspect it for
damage. Immediately report any damage to the shipping agent. Remove the packing
slip and verify that you have received all the components listed in Table 3-1.
Table 3-1. Accessory Kit for Model 3160
QtyQty
Qty
QtyQty
3 G285 Weld glands, VCR-type
3 G284 Gaskets, VCR-type
3 N284 Nuts, female (Hoke 4NM316)
2 W64 Wrench, Open End, 3/4"–5/8"
1 M52973 Instruction Manual
Part No.Part No.
Part No.
Part No.Part No.
DescriptionDescription
Description
DescriptionDescription
3.2 Front Panel
The Model 3160 front and rear panels are illustrated in Figure 3–1 on the following page. The front panel contains the following displays and controls:
1. Main power switch.
2. Light Emitting Diode (LED) display: the O2 concentration is displayed in
bold lettering.
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3 Installation3 Installation
3 Installation
3 Installation3 Installation
3. Parts Per Million (PPM) and Percent Oxygen indicators: the PPM light will
light while the instrument is measuring O
light will light while the instrument is measuring O
percent.
4. Flow Indicator and Flow Set: a flowmeter and flow set knob are provided
for adjusting gas flow in standard cubic feet per hour (SCFH).
5. Liquid Crystal Display (LCD) with keypad: the LCD shows system menus
and data during instrument operation. The keypad is the primary user-input
device used to enter information in the system.
in units of PPM. The percent
2
concentration in
2
3.3 Rear Panel
Figure 3–1 also shows the rear panel of the 3160. Located on the rear panel are
the following electrical power and gas input ports, alarm relay outputs, and analog and
digital outputs:
1. Gas Input/Vent: three input fittings are provided for span gas, sample
gas, and compressed air for pneumatic valve operation. A single vent is used
for the sample and span gas outlet. Consult the Appendix for scrubber selection.
2. AC Power Input: 110, 120, 220 or 240 V ~ at 50/60 Hz 1.5 A MAX.
Use 250 V 1.6 A T Fuse for 110, 120 V ~
Use 250 V 0.8 A T Fuse for 220, 240 V ~
3. Alarm Circuit Connections: there are five contact closures/openings
provided for external alarms. The alarm functions are defined by the user via
keypad input within the LCD menu system.
4. Analog Outputs: four analog output connectors are provided for use
with a chart recorder. Two provide range and data in voltages; the other two
provide range and data for current-driven recorders.
5. RS-232 Serial Port: a 9–pin digital input/output connector is provided
for connecting either a serial printer or a serial link to an external computer.
Optional serial link software (such as TRACS) can be used with the instrument for remote external computer monitoring and control of the instrument,
via modem or hardware link.
3-2
TELEDYNE ANALYTICAL INSTRUMENTS
Installation 3Installation 3
Installation 3
Installation 3Installation 3
DIMENSIONS:
POWER
SWITCH
PPM
INDICATOR
PERCENT
INDICATOR
CRYSTAL
DISPLAY
In
mm
LIQUID
(LCD)
COMPUTER
MODULE
I
O
KEYPAD
LED
DISPLAY
FLOWMETER
REMOVABLE
TOP COVER
FLOW
SET
KNOB
19.000
(483)
SENSOR
ACCESS
PA NE L
17.406
(442)
8.000
(203)
5.750
(146)
18.000
(457)
1.50
(38)
SPAN
GAS IN
INSTRUMENT
AIR
SAMPLE IN
SAMPLE/SPAN
VENT
RS-232
SERIAL PORT
AC POWER
VOLTAGE SELECT
ANALOG
OUTPUT
CONNECTIONS
ALARM
CIRCUIT
CONNECTIONS
Figure 3–1: Analyzer front and rear panels.
8.688
(221)
TELEDYNE ANALYTICAL INSTRUMENTS
3-3
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