Trace Oxygen Analyzer OPERATING INSTRUCTIONS FOR Model Ultra Trace 3000 Oxygen Analyzer SET FL OW 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.
Model Ultra Tace 3000 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.
Trace Oxygen Analyzer Specific Model Information The instrument for which this manual was supplied may incorporate one or more options not supplied in the standard instrument. Commonly available options are listed below, with check boxes. Any that are incorporated in the instrument for which this manual is supplied are indicated by a check mark in the box.
Model Ultra Tace 3000 Table of Contents 1 Introduction 1.1 1.2 1.3 1.4 1.5 1.6 Overview ........................................................................ 1-1 Typical Applications ....................................................... 1-1 Main Features of the Analyzer ....................................... 1-1 Model Designations ....................................................... 1-2 Front Panel (Operator Interface) ..................................... 1-3 Rear Panel (Equipment Interface) ...
Trace Oxygen Analyzer 4.3.3.2 Installing or Changing the Password ............. 4-8 4.3.4 Logout .................................................................... 4-9 4.3.5 System Self-Diagnostic Test .................................. 4-9 4.3.6 Version Screen ...................................................... 4-10 4.3.7 Filter Function ........................................................ 4-11 4.4 Calibration of the Analyzer ............................................. 4-11 4.4.1 Zero Cal .....
Model Ultra Tace 3000 DANGER COMBUSTIBLE GAS USAGE WARNING This is a general purpose instrument designed for use in a nonhazardous 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 operation of this equipment is well understood by the user.
Ultra Trace Oxygen Analyzer Introduction 1 Introduction 1.1 Overview The Teledyne Analytical Instruments Model 3000 Ultra Trace Oxygen Analyzer is a versatile microprocessor-based instrument for detecting oxygen at the parts-per-billion (ppb) level in a variety of gases. This manual covers the Model Ultra Trace 3000 General Purpose flush-panel and/or rack-mount units only. These units are for indoor use in a nonhazardous environment. 1.
1 Introduction Model Ultra Trace 3000 • Advanced Micro-Fuel Cell, designed for trace analysis, has a 0250 ppb low range with less than a 100 ppb offset and six months warranty and an expected lifetime of one year. • Versatile analysis over a wide range of applications. • Microprocessor based electronics: 8-bit CMOS microprocessor with 32 kB RAM and 128 kB ROM.
Ultra Trace Oxygen Analyzer 1.5 Introduction 1 Front Panel (Operator Interface) The standard Ultra Trace 3000 is housed in a rugged metal case with all controls and displays accessible from the front panel. See Figure 1-1. The front panel has thirteen buttons for operating the analyzer, a digital meter, an alphanumeric display, and a window for viewing the sample flowmeter.
1 Introduction Model Ultra Trace 3000 • Alarms Set the alarm setpoints and attributes. • Range Set up the 3 user definable ranges for the instrument. Data Entry Keys: Six touch-sensitive membrane switches are used to input data to the instrument via the alphanumeric VFD display: • Left & Right Arrows Select between functions currently displayed on the VFD screen. • Up & Down Arrows Increment or decrement values of functions currently displayed.
Ultra Trace Oxygen Analyzer Introduction 1 all the way in with a narrow gauge tool. Accessing the main circuit board requires unfastening rear panel screws and sliding the unit out of the case. 1.6 Rear Panel (Equipment Interface) The rear panel, shown in Figure 1-2, contains the gas and electrical connectors for external inlets and outlets. Some of those depicted are optional and may not appear on your instrument. The connectors are described briefly here and in detail in chapter 3 Installation.
1 Introduction Model Ultra Trace 3000 • RS-232 Port Serial digital concentration signal output and control input. • Remote Probe Used in the Ultra Trace3000 for controlling external solenoid valves only. • Remote Span/Zero Digital inputs allow external control of analyzer calibration. • Calibration Contact To notify external equipment that instrument is being calibrated and readings are not monitoring sample. • Range ID Contacts Four separate, dedicated, range relay contacts.
Ultra Trace Oxygen Analyzer Operational Theory 2 Operational Theory 2.1 Introduction The analyzer is composed of three subsystems: 1. Micro-fuel Cell Sensor 2. Sample System 3. Electronic Signal Processing, Display and Control The sample system is designed to accept the sample gas and transport it through the analyzer without contaminating or altering the sample prior to analysis.
2 Operational Theory Model Ultra Trace 3000 comes from outside the device as a constituent of the sample gas being analyzed. The Micro-Fuel Cell is therefore a hybrid between a battery and a true fuel cell. (All of the reactants are stored externally in a true fuel cell.) 2.2.2 Anatomy of a Micro-Fuel Cell The Micro-Fuel Cell is a cylinder only 1¼ inches in diameter and 1¼ inches thick.
Ultra Trace Oxygen Analyzer Operational Theory 2 the oxygen sensing element—the cathode—with a surface area almost 4 cm2. The cathode has many perforations to ensure sufficient wetting of the upper surface with electrolyte, and it is plated with an inert metal. The anode structure is below the cathode. It is made of lead and has a proprietary design which is meant to maximize the amount of metal available for chemical reaction.
2 Operational Theory Model Ultra Trace 3000 (These reactions are specific to oxygen as long as no gaseous components capable of oxidizing lead—such as iodine, bromine, chlorine and fluorine—are present in the sample.) In the absence of oxygen, no current is generated. 2.2.4 The Effect of Pressure In order to state the amount of oxygen present in the sample in ppb or parts-per-million of the gas mixture, it is necessary that the sample diffuse into the cell under constant pressure.
Ultra Trace Oxygen Analyzer Operational Theory 2 temperature minimizes the cell offset (typically less than 75 PPB). A second benefit of the TEC system is that by regulating the cell temperature the analyzer becomes tolerant of thermal transients. The TEC module is a solid-state semiconductor heat – pump. Passing DC current through the TEC module produces heat flow though the device. One side of the device will become hot and the other side will become cold.
2 Operational Theory 2.3 Model Ultra Trace 3000 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 sample or calibration gas is delivered. The Model Ultra Trace 3000 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.
Ultra Trace Oxygen Analyzer Operational Theory 2 Figure 2-5: Flow Diagram-Sample Under Pressure -Standard Model Ultra Trace 3000 -Do not exceed 10" Hg Vacuum- Figure 2-5-1: Flow Diagram-Sample at Zero Pressure -Model Ultra Trace 3000-V Teledyne Analytical Instruments 2-7
2 Operational Theory Model Ultra Trace 3000 Figure 2-5 is the flow diagram for the sampling system. In the standard instrument, calibration gases can be connected directly to the Sample In port by teeing to the port with appropriate valves. 2.4 Electronics and Signal Processing The Model Ultra Trace 3000 Oxygen Analyzer uses an 8031 microcontroller with 32 kB of RAM and 128 kB of ROM to control all signal processing, input/output, and display functions for the analyzer.
Ultra Trace Oxygen Analyzer Current to Voltage Amplifier Operational Theory 2 Second Stage Amplifier Sensor A to D Converter Thermistor TEC Auto Range Power Supply HEAT SINK FAN Temperature Controller System Failure Alarm Displays MicroProcessor Processing Self Test Signal 0-1 V 4-20 mA 0-1 V 4-20 mA Concentration D to A Converter Range Figure 2-7: Block Diagram of the Model Ultra Trace 3000 Electronics Teledyne Analytical Instruments 2-9
2 Operational Theory Model Ultra Trace 3000 In the presence of oxygen the cell generates a current. A current to voltage amplifier converts this current to a voltage, which is further amplified in the second stage amplifier. The output from the second stage amplifier is sent to an 18 bit analog to digital converter controlled by the microprocessor.
Ultra Trace Oxygen Analyzer Installation 3 Installation Installation of the Model Ultra Trace 3000 Analyzer includes: 1. 2. 3. 4. 5. 6. Unpacking Mounting Gas connections Electrical connections Installing the Micro-Fuel Cell Testing the system. 3.1 Unpacking the Analyzer Although the analyzer is shipped complete, certain of the parts, such as fuses and sensors, are wrapped separately to be installed on site as part of the installation. Carefully unpack the analyzer and inspect it for damage.
3 Installation Model Ultra Trace 3000 Latch ULTRA TRACE 3000 ULTRA TRACE ANALYZER Analyze System Span Zero Alarms Range 2.0 1.0 Hinge Enter Escape Set Flow 6.7” Standby 10” Figure 3-1: Front Panel of the Model Ultra Trace 3000 All operator controls are mounted on the control panel, which is hinged on the left edge and doubles as the door that provides access to the sensor and cell block inside the instrument.
Ultra Trace Oxygen Analyzer 3.3 Installation 3 Rear Panel Connections Figure 3-3 shows the Model Ultra Trace 3000 rear panel. There are ports for gas inlet and outlet, power, communication, and both digital and analog concentration output. Te le d y n e A n aly tic a l In s tru m e n ts Figure 3-3: Rear Panel of the Model Ultra Trace 3000 3.3.1 Gas Connections The unit is manufactured with 1/4 inch VCR fittings.
3 Installation Model Ultra Trace 3000 If greater sample flow is required for improved response time, install a bypass in the sampling system upstream of the analyzer input. VACUUM SERVICE: If the sample pressure is at atmospheric or very low pressure, the instrument must be ordered with the vacuum service option. This will ensure that the flow control valve is located on the exhaust side of the Micro-Fuel Cell.
Ultra Trace Oxygen Analyzer 3.3.2.2 Installation 3 50-Pin Equipment Interface Connector Figure 3-4 shows the pin layout of the Equipment Interface connector. The arrangement is shown as seen when the viewer faces the rear panel of the analyzer. The pin numbers for each input/output function are given where each function is described in the paragraphs below. Figure 3-4: Equipment Interface Connector Pin Arrangement Analog Outputs: There are four DC output signal pins—two pins per output.
3 Installation Model Ultra Trace 3000 contact connections. The contact connections are shown in Table 3-2. They are capable of switching up to 3 amperes at 250 V ac into a resistive load. The connectors are: Threshold Alarm 1: • Can be configured as high (actuates when concentration is above threshold), or low (actuates when concentration is below threshold). • Can be configured as failsafe or nonfailsafe. • Can be configured as latching or nonlatching. • Can be configured out (defeated).
Ultra Trace Oxygen Analyzer Installation 3 Zero: Floating input. 5 to 24 V input across the + and – pins puts the analyzer into the Zero mode. Either side may be grounded at the source of the signal. 0 to 1 volt across the terminals allows Zero mode to terminate when done. A synchronous signal must open and close the external zero valve appropriately. See Remote Probe Connector. (The –C option internal valves operate automatically.) Span: Floating input.
3 Installation Model Ultra Trace 3000 1) Test the CRC. When the CRC is open, Send a zero command until the CRC closes (The CRC will quickly close.) 2) When the CRC closes, remove the zero command. 3) When CRC opens again, send a span command until the CRC closes. (The CRC will quickly close.) 4) When the CRC closes, remove the span command. When CRC opens again, zero and span are done, and the sample is being analyzed.
Ultra Trace Oxygen Analyzer Installation 3 Figure 3-5: Remote Probe Connections The voltage from these outputs is nominally 0 V for the OFF and 15 V dc for the ON conditions. The maximum combined current that can be pulled from these output lines is 100 mA. (If two lines are ON at the same time, each must be limited to 50 mA, etc.) If more current and/or a different voltage is required, use a relay, power amplifier, or other matching circuitry to provide the actual driving current.
3 Installation 3.4 Model Ultra Trace 3000 Installing the Micro-Fuel Cell The Micro-Fuel Cell, Model B-2CXL is not installed in the cell block when the instrument is shipped. Install it before the analyzer is placed in service. The Micro-Fuel cell is located inside the stainless steel cell block behind the front panel (see Figure 3-8). To install the cell: 1. Remove power to the instrument by unplugging the power cord at the power source. 2.
Ultra Trace Oxygen Analyzer Installation 3 COLLAR CELL BLOCK SENSOR O-RING CELL HOLDER Figure 3-8: Installing the Micro-Fuel Cell Teledyne Analytical Instruments 3-11
3 Installation Model Ultra Trace 3000 IMPORTANT: ` 3-12 In the event of loss of flow through the analyzer, if the vent is vented to a location of high oxygen content, oxygen will back diffuse through the vent line and in most cases quickly saturate the cell with oxygen which can then require a quite long purge down time for the sensor when then exposed to low oxygen concentrations. In the event that flow is to be interrupted into the analyzer, it is suggested that the user do one of the following: 1.
Ultra Trace Oxygen Analyzer Operation 4 Operation 4.1 Introduction Once the analyzer has been installed, it can be configured for your application. To do this you will: • • • • Set system parameters: • Establish a security password, if desired, requiring Operator to log in. • Establish and start an automatic calibration cycle, if desired. Calibrate the instrument. Define the three user selectable analysis ranges, then choose autoranging or select a fixed range of analysis, as required.
4 Operation Model Ultra Trace 3000 4.2 Using the Data Entry and Function Buttons Data Entry Buttons: The < > arrow buttons select options from the menu currently being displayed on the VFD screen. The selected option blinks. When the selected option includes a modifiable item, the ∆ ∇ arrow buttons can be used to increment or decrement that modifiable item. The Enter button is used to accept any new entries on the VFD screen.
Ultra Trace Oxygen Analyzer Operation 4 ANALYZE SYSTEM Perform Oxygen Analysis of the Sample SPAN TRAK/HLD ZERO Set Instrument Span Perform Self-Diagnostic Test Initiate Automatic Calibration ALARMS Set Instrument Zero RANGSet Alarm Setpoints Set Password Confrigure Mode of Alarm Operation Define Analysis Ranges Logout Neg Filter Figure 4-1: Hierarchy of Functions and Subfunctions 4.3 The System Function The subfuctions of the System function are described below.
4 Operation • • • • • • • Model Ultra Trace 3000 After a password is assigned, the operator must log out to activate it. Until then, anyone can continue to operate the instrument without entering the new password. Only one password can be defined. Before a unique password is assigned, the system assigns TETAI by default. This allows access to anyone. After a unique password is assigned, to defeat the security, the password must be changed back to TETAI.
Ultra Trace Oxygen Analyzer Operation 4 In the first line, TRACK or HOLD should be blinking. The operator can toggle between TRACK and HOLD with the Up or Down keys. When TRACK is selected, the analog outputs (0-1 VDC and 4-20 ma) and the range ID contacts will track the instrument readings during calibration (either zero or span). TRACK is the factory default.
4 Operation Model Ultra Trace 3000 after this initial stabilizing period and may be checked again after a additional 7-10 day frequency of zero adjustment is at the discretion of the user (once a month is suggested). Choose System from the Function buttons. The LCD will display five subfunctions. TRAK/HLD Auto—Cal PSWD Logout More Use < > arrows to blink Auto—Cal, and press Enter. A new screen for Span/Zero set appears.
Ultra Trace Oxygen Analyzer 4.3.3.1 Operation 4 Entering the Password To install a new password or change a previously installed password, you must key in and ENTER the old password first. If the default password is in effect, pressing the ENTER button will enter the default TETAI password for you. Press System to enter the System mode. TRAK/HLD Auto—Cal PSWD Logout More Use the < > arrow keys to scroll the blinking over to PSWD, and press Enter to select the password function.
4 Operation Model Ultra Trace 3000 4.3.3.2 Installing or Changing the Password If you want to install a password, or change an existing password, proceed as above in Entering the Password. When you are given the opportunity to change the password: Change Password? =Yes =No Press Enter to change the password (either the default TETAI or the previously assigned password), or press Escape to keep the existing password and move on.
Ultra Trace Oxygen Analyzer Operation 4 Wait a moment for the entry screen. You will be given clearance to proceed. A A A A A TO Proceed Use the arrow keys to retype your password and press Enter when finished. Your password will be stored in the microprocessor and the system will immediately switch to the Analyze screen, and you now have access to all instrument functions. If all alarms are defeated, the Analyze screen appears as: 0.
4 Operation Model Ultra Trace 3000 status of each function is displayed on the screen, either as OK or as a number between 1 and 3. (See System Self Diagnostic Test in chapter 5 for number code.) The self diagnostics are run automatically by the analyzer whenever the instrument is turned on, but the test can also be run by the operator at will. To initiate a self diagnostic test during operation: Press the System button to start the System function.
Ultra Trace Oxygen Analyzer Operation 4 4.3.7 Filter Function The response time on the most sensitive range (ppb range) is user definable from approximately 1-60 minutes. The adjustable filter allows the user to tune the response of the analyzer to best balance sensor noise and response time requirements. The factory default setting is 5 minutes. The actual response time will depend on the user’s sample system (the length and size the tubing of tubing as well as the sample flow rate).
4 Operation Model Ultra Trace 3000 Generally, the value of the zero offset is part of the oxygen reading of the sample gas as shown by the analyzer readout. As an example, a reading of 0.5 ppm oxygen may include 0.4 ppm oxygen in the sample gas and a 0.1 ppm zero offset. The determination of the zero offset requires the use of oxygen free gas to the analyzer. We recommend the use of nitrogen gas with a scrubber to assure oxygen levels below 20 ppb.
Ultra Trace Oxygen Analyzer Operation 4 #### PPM 4 Left=### Zero ppm/s The zeroing process will automatically conclude when the output is within the acceptable range for a good zero. Then the analyzer automatically returns to the Analyze mode. Because the reading of the slope is not very sensitive, it is recommended that zero gas be purging a few minutes before starting the Auto mode zeroing. This will ensure cell stability on the new Zero settings. 4.4.1.
4 Operation Model Ultra Trace 3000 instrument returns back to analyzer mode without taking the zero calibration. The Ultra Trace 3000 system alarm trips, and the LCD displays a failure message. #.# ppm Anlz CELL FAIL/ ZERO HIGH Before replacing the cell: a. Check your span gas to make sure it is within specifications. b. Check for leaks up-stream from the cell, where oxygen may be leaking into the system. c. Check if more purging time with Zero calibration gas is needed.
Ultra Trace Oxygen Analyzer Operation 4 This menu allows the operator to set the time the analyzer should be held in the AUTO span mode, after the readings of the analyzer settle. Five minutes is the default, but it could be adjusted anywhere from 1 to 60 minutes by using the UP or DOWN keys. Press Enter to move to the next screen. Span Val: 008.00 ppm Span Mod # Use the ∆ ∇ arrow keys to enter the oxygen-concentration mode (999.99 ppm is maximum value of span gas allowed).
4 Operation Model Ultra Trace 3000 Span Val: 008.00ppm Span Mod # Press ∆ () to permit modification (Mod #) of span value. Use the arrow keys to enter the oxygen concentration of the span gas you are using (999.99 is maximum value of span gas). The < > arrows choose the digit, and the ∆∇ arrows choose the value of the digit. Press Enter to enter the span value into the system and begin the span calibration.
Ultra Trace Oxygen Analyzer Operation 4 gas or electronics failure could set this feature off at the end of the span. Consider this before replacing the cell. 4.5 Switching of Sample Streams The Model Ultra Trace 3000 may be used to monitor more than one type of sample gas, such as nitrogen and helium, or two streams of nitrogen containing low (less than 1 ppm) and high (500 to 1000 ppm) concentrations of oxygen.
4 Operation Model Ultra Trace 3000 set of form “C" contacts rated for 3 amperes resistive load at 250 V ac. See Figure 3-5 in Chapter 3, Installation and/or the Interconnection Diagram included at the back of this manual for relay terminal connections. The system failure alarm has a fixed configuration as described in chapter 3 Installation. The concentration alarms can be configured from the front panel as either high or low alarms by the operator.
Ultra Trace Oxygen Analyzer Operation 4 The defeat function can also be used to reset a latched alarm. (See procedures, below.) If you are using password protection, you will need to enter your password to access the alarm functions. Follow the instructions in section 4.3.3 to enter your password. Once you have clearance to proceed, enter the Alarm function. Press the Alarm button on the front panel to enter the Alarm function. Make sure that AL1 is blinking.
4 Operation Model Ultra Trace 3000 Alarm Hysterisis: There is alarm hysterisis to prevent chatter of the alarm contacts. It is set to 0.2 ppm for alarms set above 1 ppm, and 10 ppb for alarms set below 1 ppm. 4.7 The Range Function The Range function allows the operator to program up to three concentration ranges to correlate with the DC analog outputs. If no ranges are defined by the user, the instrument defaults to: Low = 0–250 ppb Med = 0–1 ppm High = 0–10 ppm.
Ultra Trace Oxygen Analyzer Operation 4 Use the ∆∇ arrow keys to enter the upper value of the range (all ranges begin at 0). Repeat for each range you want to set. Press Enter to accept the values and return to Analyze mode. (See note below.) Note: The ranges must be increasing from low to high, for example, if range 1 is set as 0–500 ppb and range 2 is set as 0–10 ppm, range 3 cannot be set as 0– 5 ppm since it is lower than range 2.
4 Operation 4.8 Model Ultra Trace 3000 The Analyze Function Normally, all of the functions automatically switch back to the Analyze function when they have completed their assigned operations. Pressing the Escape button in many cases also switches the analyzer back to the Analyze function. Alternatively, you can press the Analyze button at any time to return to analyzing your sample. 4.
Ultra Trace Oxygen Analyzer Operation 4 To provide an indication of the range, a second pair of analog output terminals are used. They generate a steady preset voltage (or current when using the current outputs) to represent a particular range. The following table gives the range ID output for each analysis range: Range LO Voltage (V) 0.25 Current (mA) 8 MED 0.50 12 HI 0.75 16 (0-1000ppm) 1.
4 Operation 4-24 Model Ultra Trace 3000 Teledyne Analytical Instruments
Ultra Trace Oxygen Analyzer Maintenance 5 Maintenance 5.1 Routine Maintenance Aside from normal cleaning and checking for leaks at the gas connections, routine maintenance is limited to replacing Micro-Fuel cells and fuses, and recalibration. For recalibration, see Section 4.4 Calibration. WARNING: SEE WARNINGS ON THE TITLE PAGE OF THIS MANUAL. 5.2 Cell Replacement The B-2CXL Micro-Fuel Cell is a sealed electrochemical transducer with no electrolyte to change or electrodes to clean.
5 Maintenance Model Ultra Trace 3000 WARNING: THE SENSOR USED IN THE MODEL 3000 TRACE OXYGEN ANALYZER USES ELECTROLYTES WHICH CONTAIN TOXIC SUBSTANCES, MAINLY LEAD AND POTASSIUM HYDROXIDE, THAT CAN BE 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. IN CASE OF EYE CONTACT, IMMEDIATELY FLUSH EYES WITH WATER FOR AT LEAST 15 MINUTES. CALL PHYSICIAN.
Ultra Trace Oxygen Analyzer Maintenance 5 5.2.3 Removing the Micro-Fuel Cell The Micro-Fuel cell is located inside the stainless steel cell block behind the front panel (see Figure 5-1). To remove an existing cell: 1. Remove power to the instrument by unplugging the power cord at the power source. 2. Open the front panel door by pressing the release button on the top right corner of the door all the way in with a narrow gauge tool. 3.
5 Maintenance Model Ultra Trace 3000 5.2.4 Installing a New Micro-Fuel Cell Before installing a new cell, check the O-ring in the base of the cell holder. Replace if worn or damaged. 1. Verify that the 0-ring is properly located. 2. Place the cell on cell holder with the screen side facing down. 3. Place the cell block on top of the cell holder. 4. Hold the cell block with one hand and rotate the collar clockwise. 5. To determine if the assembly is fully seated, rotate the cell block slightly. 6.
Ultra Trace Oxygen Analyzer 5.3 Maintenance 5 Fuse Replacement 1. Place small screwdriver in notch, and pry cover off, as shown in Figure 5-2. Figure 5-2: Removing Fuse Block from Housing 2. To change between American and European fuses, remove the single retaining screw, flip Fuse Block over 180 degrees, and replace screw. 3. Replace fuse as shown in Figure 5-3. 4. Reassemble Housing as shown in Figure 5-2.
5 Maintenance 5.4 Model Ultra Trace 3000 System Self Diagnostic Test 1. Press the System button to enter the system mode. 2. Use the < > arrow keys to move to More, and press Enter. 3. Use the < > arrow keys to move to Self-Test, and press Enter. The following failure codes apply: Table 5-1: Self Test Failure Codes Power 0 1 2 3 OK 5 V Failure 15 V Failure Both Failed Analog 0 1 2 3 OK DAC A (0–1 V Concentration) DAC B (0–1 V Range ID) Both Failed Preamp 0 1 2 3 5.
Ultra Trace Oxygen Analyzer • • • • • • Maintenance 5 TEC cooler assembly Power Supplys Microprocessor Displays 5 digit LED meter 2 line, 20 character, alphanumeric, VFD display RS-232 Communications Port. TEC temperature controller PCB See the drawings in the Drawings section in back of this manual for details. X X X X X Te le d y n e A n aly tic a l In s tru m e n ts X X X X X Figure 5-4: Rear-Panel Screws To detach the rear panel, remove only the 14 screws marked with an X. 5.
5 Maintenance 5.7 Model Ultra Trace 3000 Troubleshooting Problem: Erratic readings of the Oxygen concentration as reported by the analyzer. Possible Cause: The analyzer may have been calibrated in an inaccurate fashion. Solution: Turn the analyzer off, then turn back on again. Press the System key when prompted by the analyzer "Press System for default Values". This will return the analyzer to its default settings in calibration and zero values.
Ultra Trace Oxygen Analyzer Appendix Appendix A-1 Specifications Packaging: General Purpose • Flush panel mount (Standard). • Relay rack mount. Contains one instrumentsin one 19" relay rack mountable plate (Optional). Sensor: Teledyne B-2CXL trace analysis Micro-Fuel Cell. Cell Block: 316 stainless steel. Sample System: All wetted parts of 316 stainless steel. 90 % Response Time: Less than 30 seconds at 25 °C (77 °F) on 10 ppm range. 120 seconds on 250 ppb range, programmable response in ppb range.
Appendix Model Ultra Trace 3000 Power: Universal power supply 85-250 V ac, at 47-63 Hz. Operating Temperature: 5-40 °C Accuracy: ±2% of full scale for all ranges except 0-250 ppb range, at constant temperature. For 0-250 ppb range accuracy is as follows: ±5 ppb at constant temperature. ±10 ppb over temperature variation of 20° 30°C. ±15 ppb over temperature variation of 15° 35°C. All accuracy specifications are contingent upon the completion of zero ans span calibration.
Ultra Trace Oxygen Analyzer Appendix A-2 Recommended 2-Year Spare Parts List QTY.
Appendix Model Ultra Trace 3000 A-3 Drawing List B-71228 Piping Diagram A-4 19-inch Relay Rack Panel Mount Figure A-1: Single 19" Rack Mounts A-4 Teledyne Analytical Instruments 8.72 5.
Ultra Trace Oxygen Analyzer A-5 Appendix Ultra Trace 3000 SERIES ANALYZERS APPLICATION NOTES ON PRESSURES AND FLOW RECOMMENDATIONS 3000 series analyzers require reasonably regulated sample pressures. While the 3000 analyzers are not sensitive to variations of incoming pressure (provided they are properly vented to atmospheric pressure) The pressure must be maintained as to provide a useable flow rate trough the analyzer. Any line attached to sample vent should be 1/4 or larger in diameter.
Appendix Model Ultra Trace 3000 BY-PASS: To improve the system response, a by-pass can be added to increase the sample flow rate to the analyzer by a factor of ten. A by-pass provides a sample flow path around the analyzer of 2 - 18 SCFH. typically. CONVERSIONS: 1 PSI 1 SCFH NOTE: A-6 = = 2.04 INCHES OF MERCURY (in. Hg.) 0.476 SLPM The MSDS on this material is available upon request through the Teledyne Environmental, Health and Safety Coordinator.