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OPERATING INSTRUCTIONS FOR
Model 3300PA
Percent Oxygen Analyzer
SERIES 3300 PERCENT OXYGEN
SAMPLE
SPAN
Teledyne Analytical Instruments
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.
P/N M69127
ONLY AUTHORIZED PERSONNEL SHOULD CONDUCT MAINTENANCE AND/OR SERVICING. BEFORE
08/06/99
CONDUCTING ANY MAINTENANCE OR SERVICING CONSULT WITH AUTHORIZED SUPERVISOR/
ECO # 99-0323
MANAGER.
Teledyne Analytical Instruments
i
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Summary of Contents for Teledyne 3300PA
- Page 1 OPERATING INSTRUCTIONS FOR Model 3300PA Percent Oxygen Analyzer SERIES 3300 PERCENT OXYGEN SAMPLE SPAN Teledyne Analytical Instruments 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.
- Page 2 Any safeguards required such as locks, labels, or redun- dancy, must be provided by the user or specifically requested of Teledyne at the time the order is placed.
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Page 3: Table Of Contents
4.1 Introduction ..............4-1 4.2 Using the Function and Data Entry Buttons ....4-2 4.3 Setting the Analysis Ranges .......... 4-2 4.3.1 HI Range ............... 4-2 4.3.2 LO Range .............. 4-3 4.4 Setting the Alarm Setpoints..........4-3 Teledyne Analytical Instruments... - Page 4 5.2.4 Installing a Micro-Fuel Cell ........5-3 5.2.5 Cell Warranty Conditions ........5-4 Appendix A.1 Specifications ..............A-1 A.2 Spare Parts List ............. A-2 A.3 Reference Drawing ............A-3 A.4 Miscellaneous ..............A-3 A.5 Material Safety Data Sheet ..........A-3 Teledyne Analytical Instruments...
- Page 5 Since the use of this instrument is beyond the control of Teledyne, no responsibility by Teledyne, its affiliates, and agents for damage or injury from misuse or neglect of this equipment is implied or assumed.
- Page 6 This page left intentionally blank Teledyne Analytical Instruments...
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Page 7: Overview
Overview The Teledyne Electronic Technologies Analytical Instruments (TETAI) Model 3300PA is a microprocessor-based percent oxygen analyzer for real- time measurement of the percent of oxygen in inert gases, or in a wide variety of gas mixtures. It features simple operation, fast response, and a compact, rugged construction. -
Page 8: Front Panel Description
Figure 1-1: Front Panel Function Keys: Seven pushbutton membrane switches are used to select the function performed by the analyzer: • Set Alarm 1 Sets Alarm 1 Hi or Low, and the concentration at which alarm 1 activates. Teledyne Analytical Instruments... -
Page 9: Rear Panel Description
Rear Panel Description The rear panel contains the electrical input and output connectors. The connectors are described briefly here and in detail in the Installation chapter of this manual. Figure 1-2 Rear Panel Teledyne Analytical Instruments... - Page 10 0–10 V dc concentration output. 0–10 V dc range ID (or optional overrange) output. 4–20 mA dc concentration output, negative ground. • Alarm Connections Alarm 1, Alarm 2, and Sensor Failure Alarm connections. • Sensor Connector Internal Sampling System, Sensor Connector. Teledyne Analytical Instruments...
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Page 11: Operational Theory
Micro-Fuel Cell Sensor 2.2.1 Principles of Operation The oxygen sensor used in the Model 3300PA is a Micro-Fuel Cell designed and manufactured by TAI. It is a sealed, disposable electrochemical transducer. The active components of the Micro-Fuel Cell are a cathode, an anode, and the aqueous KOH electrolyte in which they are immersed. -
Page 12: Anatomy Of A Micro-Fuel Cell
Near the diffusion membrane lies the oxygen sensing element—the cathode. The anode structure is larger than the cathode. It is made of lead and is designed to maximize the amount of metal available for chemical reaction. Teledyne Analytical Instruments... -
Page 13: Electrochemical Reactions
2.2.4 The Effect of Pressure In order to state the amount of oxygen present in the sample as a percent- age of the gas mixture, it is necessary that the sample diffuse into the cell under constant pressure. Teledyne Analytical Instruments... -
Page 14: Calibration Characteristics
Figure 2-2. Characteristic Input/Output Curve for a Micro-Fuel Cell In addition, since there is zero output in the absence oxygen, the character- istic curve has an absolute zero. The cell itself does not need to be zeroed. Teledyne Analytical Instruments... -
Page 15: Electronics
D A C RAN GE ID M ICRO - CO NT RO L- K EY BO ARD DIS P LAY RELAYS A LAR M S RELAYS A LAR M S Figure 2-3: Block Diagram of the Signal Processing Electronics Teledyne Analytical Instruments... - Page 16 12-bit digital to analog converter (DAC) that produces the 0-10 V dc analog concentration signal and the 0-10 V dc analog range ID output. A current to voltage converter (E–I CONV) produces the 4-20 mA dc analog concentration signal. Teledyne Analytical Instruments...
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Page 17: Installation
CAUTION: Do not disturb the integrity of the cell package until the cell is to actually be used. If the cell package is punctured and air is permitted to enter, cell-life will be compromised. Teledyne Analytical Instruments... -
Page 18: Location And Mounting
Location and Mounting 3.2.1 Control Unit Installation The 3300PA Control Unit is designed to be rack 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. - Page 19 Alarm 1 and Alarm 2 can both be configured as either HI or LO. A HI alarm will activate when concentration is above threshold, while a LO alarm will activate when concentration is below threshold. Teledyne Analytical Instruments...
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Page 20: Gas Connections
Gas Connections The standard Model 3300PA has two inlets and one outlet fixture only. Calibration gasses can be connected into the "Span" inlet. The two inlets and one outlet are 1/8 inch brass fittings. - Page 21 Select Sample with the three-way control valve and open the flow control valve on the analyzer to full flow (located on the analyzer flow meter). Open the pump bypass valve, and turn on the pump. Readjust the Teledyne Analytical Instruments...
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Page 22: Installation Checklist
Set the sample pressure to 5–10 psig, nominal (for non-vacuum service units) • Set the flow Once the above checks have been made, you can connect to the power source. The instrument is now ready for operation. Teledyne Analytical Instruments... -
Page 23: Operation
Analyzing for the percent oxygen level in the gas passing through the cell block is the default mode of operation. As long as no front panel buttons are being pressed the Analyzer is analyzing. Figure 4-1: Front Panel Controls and Indicators Teledyne Analytical Instruments... -
Page 24: Using The Function And Data Entry Buttons
LO range when the oxygen concentration reaches 85% of the LO range fullscale value Note: The HI Range setpoint MUST be set at a higher concentration percent- age than the LO Range setpoint. Teledyne Analytical Instruments... -
Page 25: Hi Range
3. To change the setting at which the alarm will be actuated, press the SET ALARM 1 function button once more. The alarm setpoint will flash on the LED display. Press either the Up or Down keys to raise or lower the displayed value, as required, Teledyne Analytical Instruments... -
Page 26: Alarm 2
The SENSOR FAIL alarm is factory set to a reading less than 0.05% . Should this alarm trigger the ALARM Indicator below the SET Func- tion buttons will blink, and the alarm relay contact dedicated to this function will change state. Teledyne Analytical Instruments... -
Page 27: Selecting A Fixed Range Or Autoranging
Percent Oxygen Analyzer Operation 4 Selecting a Fixed Range or Autoranging The Model 3300PA can operate in fixed high, fixed low, or autoranging mode. To change modes: 1. Press and then release the SET HI RANGE and the SET LO RANGE buttons simultaneously. -
Page 28: Supplementary Information
- the 60 second alarm delay will not occur, i.e., the alarms will be responsive immediately. CAUTION: TET/AI considers the action of pressing the ALARM or RANGE buttons to be at your (the user’s) discretion and NOT under guarantee of alarm protection. Teledyne Analytical Instruments... -
Page 29: Replacing The Fuse
Maintenance Aside from normal cleaning and checking for leaks at the gas connections, Overvoltage the Model 3300PA should not require any maintenance beyond replacement of Category II expended Micro-Fuel Cells, and perhaps a blown fuse. Routine maintenance includes occasional recalibration, as described in chapter 4, Operation. -
Page 30: Sensor Installation Or Replacement
(75° F nominal), and in such a way as to eliminate the possibility of incurring damage. CAUTION: Do not disturb the integrity of the cell package until the cell is to actually be used. If the cell package is punctured and air is permit- Teledyne Analytical Instruments... -
Page 31: Removing The Micro-Fuel Cell
Maintenance 5 ted to enter, cell-life will be compromised. WARNING: The sensor used in the Model 3300PA uses electrolytes which contain substances that are extremely harmful if touched, swallowed, or inhaled. Avoid contact with ANY fluid or powder in or around the unit. What may appear to be plain water could contain one of these toxic substances. -
Page 32: Cell Warranty Conditions
5.2.5 Cell Warranty Conditions The Class I-22 Micro-Fuel cell is used in the Model 3300PA. This cell is a long life cell and is warranted for 2 years (under specified operating condi- tions—see Appendix) from the date of shipment. Note any Addenda attached to the front of this manual for special information applying to your instrument. -
Page 33: Appendix A.1 Specifications
90% in less than 8 seconds at 25 °C. System Power Requirements: AC (100-240 VAC, 50/60Hz), 10W. System Enclosure: Rack mount with handles. Dimensions (Approx.) 19 W x 5 H x 5 D. Sensor Type: Micro Fuel Cell Class I-22. Teledyne Analytical Instruments... -
Page 34: Spare Parts List
Orders for replacement parts should include the part number and the model and serial number of the system for which the parts are intended. Send orders to: TELEDYNE ELECTRONIC TECHNOLOGIES Analytical Instruments 16830 Chestnut Street City of Industry, CA 91749-1580... -
Page 35: Reference Drawing
D-69127 Final Assembly (and interconnection diagram) D-69220 Outline Diagram A.4 Miscellaneous The symbol: ~ is used on the rear panel of the model 3300PA to signify volts alternating current (V ac). NOTE: The MSDS on this material is available upon request through the Teledyne Environmental, Health and Safety Coordinator. - Page 36 Appendix Model 3300 Teledyne Analytical Instruments...
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