Photometric Analyzer OPERATING INSTRUCTIONS Model 6000A Photometric 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.
Model 6000A Copyright © 1998 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 917491580.
Photometric Analyzer Table of Contents Specific Model Information ................................. iv Preface ................................................................ v Part I: Control Unit ................................. Part I: 1-1 Part II: Analysis Unit ............................. Part II: 1-1 Appendix .........................................................
Model 6000A iv Teledyne Analytical Instruments
Part I: Control Unit OPERATING INSTRUCTIONS Model 6000A Photometric Analyzer Part I: Control Unit Panel Mount Teledyne Analytical Instruments Part I: i
Model 6000A Photometric Analyzer Table of Contents 1 Introduction 1.1 1.2 1.3 1.4 1.5 Overview ........................................................................ 1-1 Typical Applications ....................................................... 1-1 Main Features of the Analyzer ....................................... 1-1 Control Unit Inner Interface Panel .................................. 1-2 Control Unit Interface Panel ........................................... 1-4 2 Installation 2.1 2.2 2.3 2.
Part I: Control Unit 3.4 The Zero and Span Functions ....................................... 3-15 3.4.1 Zero Cal ................................................................. 3-16 3.4.1.1 Auto Mode Zeroing ........................................ 3-16 3.4.1.2 Manual Mode Zeroing .................................... 3-17 3.4.1.3 Cell Failure .................................................... 3-18 3.4.2 Span Cal ................................................................ 3-18 3.4.2.
Model 6000A Photometric Analyzer iv: Part I Teledyne Analytical Instruments
Photometric Analyzer Part I: Control Unit Introduction 1.1 Overview The Teledyne Analytical Instruments Model 6000A Control Unit, together with a 6000A Analysis Unit, is versatile microprocessor-based instrument. Part I, of this manual covers the Model 6000A General Purpose Panel Mount Control Unit. (The Analysis Unit is covered in Part II of this manual.) The Control Unit is for indoor use in a nonhazardous environment only.
1 Introduction Model 6000A • A 2-line alphanumeric display screen, driven by microprocessor electronics, that continuously prompts and informs the operator. • High resolution, accurate readings of concentration from low ppm levels through to 100%. Large, bright, meter readout. • Versatile analysis over a wide range of applications. • Microprocessor based electronics: 8-bit CMOS microprocessor with 32 kB RAM and 128 kB ROM.
Photometric Analyzer Part I: Control Unit Figure 1-1: Front of Panel Control Unit Function Keys: ---- touch-sensitive membrane switches are used to change the specific function performed by the analyzer: • Analyze Perform analysis for concentration content of a sample. • System Perform system-related tasks (described in detail in chapter 3, Operation.). • Span Span calibrate the analyzer. • Zero Zero calibrate the analyzer. • Alarms Set the alarm setpoints and attributes.
1 Introduction Model 6000A 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. • Enter • Escape Moves VFD display back to the previous screen in a series. If none remains, returns to the Analyze screen.
Photometric Analyzer Part I: Control Unit Figure 1-2: Model 6000A Rear Panel Teledyne Analytical Instruments Part I: 1-5
1 Introduction Model 6000A • Power Connection AC power source, 115VAC, 50/60 Hz • Analog Outputs 0-1 V dc concentration and 0-1 V dc range ID. Isolated 4-20 mA dc and 4-20 mA dc range ID. • Alarm Connections 2 concentration alarms and 1 system alarm. • RS-232 Port Serial digital concentration signal output and control input. • Remote Bench Provides all electrical interconnect to the Analysis Unit. Remote Span/Zero Digital inputs allow external control of analyzer calibration.
Photometric Analyzer Part I: Control Unit Installation Installation of Model 6000A Analyzers includes: 1. Unpacking, mounting, and interconnecting the Control Unit and the Analysis Unit 2. Making gas connections to the system 3. Making electrical connections to the system 4. Testing the system. This chapter covers installation of the Control Unit. (Installation of the Analysis Unit is covered in Part II of this manual.) 2.
2 Installation Model 6000A Figure 2-1: Front Panel of the Model 6000A Control Unit All operator controls are mounted on the inner control panel "door", which is hinged on the left edge and doubles as a door to provide access to the internal components of the instrument. The door will swing open when the button of the latch is pressed all the way in with a narrow gauge tool (less than 0.
Photometric Analyzer Part I: Control Unit 5 12 7. in Figure 2-2: Required Front Door Clearance Allow clearance for the door to open in a 90-degree arc of radius 11.75 inches. See Figure 2-2. 2.3 Electrical Connections Figure 2-3 shows the Control Unit interface panel. Connections for power, communications, and both digital and analog signal outputs are described in the following paragraphs. Wire size and maximum length data appear in the Drawings at the back of this manual.
2 Installation Model 6000A Primary Input Power: The power supply requires a 115Vac, 50/60Hz power source. The power cord receptacle and fuse block are located in the same assembly. Insert the female plug end of the power cord into the power cord receptacle. CAUTION: Power is applied to the instrument's circuitry as long as the instrument is connected to the power source. The gray switch on the front panel is for switching power on or off to the displays and outputs only.
Photometric Analyzer Part I: Control Unit The analog output signal has a voltage which depends on the sample concentration AND the currently activated analysis range. To relate the signal output to the actual concentration, it is necessary to know what range the instrument is currently on, especially when the analyzer is in the autoranging mode. The signaloutput for concentration is linear over currently selected analysis range.
2 Installation Model 6000A Table 2-2: Analog Range ID Output - Example Range Voltage (V) Current (mA) LO 0.25 8 MED 0.50 12 HI 0.75 16 CAL (0-25%) 1.00 20 Alarm Relays: There are three alarm-circuit connectors on the alarm relays block (under RELAY OUTPUTS) for making connections to internal alarm relay contacts. Each provides a set of Form C contacts for each type of alarm. Each has both normally open and normally closed contact connections.
Photometric Analyzer Part I: Control Unit Threshold Alarm 2: System Alarm: • Can be configured as latching or nonlatching. • Can be configured out (defeated). • Can be configured as high (actuates when concentration is above threshold), or low (actuates when concentration is below threshold). • Can be configured as fail-safe or non-fail-safe. • Can be configured as latching or nonlatching. • Can be configured out (defeated).
2 Installation Model 6000A Remote Calibration Protocol: To properly time the Digital Remote Cal Inputs to the Model 6000A Analyzer, the customer's controller must monitor the Cal Relay Contact. When the contact is OPEN, the analyzer is analyzing, the Remote Cal Inputs are being polled, and a zero or span command can be sent. When the contact is CLOSED, the analyzer is already calibrating. It will ignore your request to calibrate, and it will not remember that request.
Photometric Analyzer Part I: Control Unit RD 2 Received Data TD 3 Transmitted Data DTR 4 Data Terminal Ready COM 5 Common DSR 6 Data Set Ready RTS 7 Request to Send CTS 8 Clear to Send RI 9 Ring Indicator The data sent is status information, in digital form, updated every two seconds.
2 Installation Model 6000A Table 2-5: Required RS-232 Options Parameter Baud Byte Parity Stop Bits Message Interval Setting 2400 8 bits none 1 2 seconds Remote Bench and Solenoid Valves: The 6000A is a single-chassis instrument. However, the REMOTE BENCH and SOLENOID RETURN connector is provided on the uper right corner of the backpanel as a 12 pin connector. The Remote Bench is wired at the factory as well as any optional solenoid valves included in the system. 2.
Photometric Analyzer Operation 3 Operation 3.1 Introduction Although the Model 6000A is usually programmed to your application at the factory, it can be further configured at the operator level, or even, cautiously, reprogrammed. Depending on the specifics of the application, this might include all or a subset of the following procedures: • Setting system parameters: • Establish a security password, if desired, requiring Operator to log in (secure in safe file for referrence).
3 Operation Model 6000A The Enter button is used to accept any new entries on the VFD screen. The Escape button is used to abort any new entries on the VFD screen that are not yet accepted by use of the Enter button. Figure 4-1 shows the hierarchy of functions available to the operator via the function buttons. The six function buttons on the analyzer are: • Analyze. This is the normal operating mode.
Photometric Analyzer Operation 3 System Dig_filt Set Digital Filter SELF-TEST Self-Test in Progress Self-Test Results PWD Enter Password Change Yes/No LOGOUT Secure System setup not allowed Change Password Verify Password Enter MORE AUTOCAL FILSOL Span/Zero status and <>setup Span/Zero Solenoid or Filter TRACK or HOLD Set track or hold output CAL-HOLD TIMER Set cal.
3 Operation Model 6000A the appropriate point in the procedure, in a Monospaced type style. Push-button names are printed in Oblique type. 3.3 The System Function The subfuctions of the System function are described below. Specific procedures for their use follow the descriptions: • Dig_Filt: Adjust how much digital filtering should be on the signal • • • • • • • • • • • SELF-TEST: Performs a self-diagnostic test to check the integrity of the power supplies, outputs, detector signal and preamplifier.
Photometric Analyzer Operation 3 Note: If you require highly accurate AUTO-CAL timing, use external AUTO-CAL control where possible. The internal clock in the Model 6000A is accurate to 2-3 %. Accordingly, internally scheduled calibrations can vary 2-3 % per day. To setup an AutoCal cycle: Choose System from the Function buttons. TheVFD will display five subfunctions.
3 Operation Model 6000A 3.3.2 Password Protection Before a unique password is assigned, the system assigns TAI by default. This password will be displayed automatically. The operator just presses the Enter key to be allowed total access to the instrument’s features. If a password is assigned, then setting the following system parameters can be done only after the password is entered: alarm setpoints, assigning a new password, range/application selections, and curve algorithm linearization.
Photometric Analyzer Operation 3 In a few seconds, you will be given the opportunity to change this password or keep it and go on. Change Password? =Yes =No Press Escape to move on, or proceed as in Changing the Password, below. 3.3.2.2 Installing or Changing the Password If you want to install a password, or change an existing password, proceed as above in Entering the Password.
3 Operation Model 6000A Enter PWD To Verify: AAA 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: 1.95 ppm SO2 nR1: Ø 1Ø Anlz If an alarm is tripped, the second line will change to show which alarm it is: 1.
Photometric Analyzer Operation 3 Note: The sensor will always show failed unless Zero gas is present in the sampling cell at the time of the SELF-TEST. 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.
3 Operation Model 6000A Gas Use: SO2 Range: Ø 10% Press Enter again. Algorithm setup: VERIFY SET UP Select and Enter VERIFY to check whether the linearization has been accomplished satisfactorily. Dpt INPUT OUTPUT Ø Ø.ØØ Ø.ØØ The leftmost digit (under Dpt) is the number of the data point being monitored. Use the ∆∇ keys to select the successive points. The INPUT value is the input to the linearizer. It is the simulated output of the analyzer. You do not need to actually flow gas.
Photometric Analyzer Operation 3 DIG_FILT SELF-TEST PWD LOGOUT MORE 2. DIG_FILT will flash, press the ENTER key, Weightofdigital Filter: 9 3. The number on the second row will flash and can be set by using the Up or Down arrow keys. The settings go from zero, no digital filtering, to 10, maximum digital filtering. The default setting is 8 and that should suffice for most applications.
3 Operation Model 6000A 3.3.8 Filter or Solenoid Setup The 6000A can be spanned or zeroed by calibration gases or by the optical filters. The proper calibration method should be set at the factory. To access the Filter or Solenoid Flags, you must: 1. Press the System key to start the System function: DIG_FILT SELF-TEST PWD LOGOUT MORE 2. Using the Right or Left arrow keys, select MORE and press Enter. The second System screen appears: AUTOCAL FILSOL CAL-HOLD-TIMER TRACK MORE 3.
Photometric Analyzer Operation 3 AUTOCAL FILSOL TRACK CAL-HOLDER-TIMER MORE or AUTOCAL FILSOL HOLD CAL-HOLD-TIMER MORE 3. The option on the right of the first row can be set to TRACK or HOLD by using the UP or Down keys. By selecting the TRACK option, the analog outputs are enabled and with the display will track the concentration changes while the instrument is undergoing scheduled or remote calibration (either zero or span).
3 Operation Model 6000A AUTOCAL FILSOL HOLD CAL-HOLD-TIMER MORE 3. Select with the Right or Left keys CAL-HOLD-TIMER, and press the Enter key to access this function menu: Calbrthold: 3min Samplehold: 1min The calibration hold time is set on the first row, while the sample hold time is set on the second row. To select one or the other, use the Right or Left keys. To modify the time of either timer, use the Up or Down keys. The time is in the minutes. 3.3.
Photometric Analyzer Operation 3 OUTPUT: 4 MA and OUTPUT: 20 MA can be toggled by moving on that field and pressing the Up or Down key. 4 mA output should be calibrated first and 20 mA output afterwards. 4. Select OUTPUT: 4 MA and press the Enter key Use UP/DOWN arrow to Adjust 4 ma: 250 The number on the second row is the setpoint of the 4 mA output. It is analogous to a potentiometer wiper. The number can be set anywhere from 0 to 500. The default is 250, in the middle.
3 Operation Model 6000A Readjust the gas pressure into the analyzer until the flowrate through the Sample Cell settles between 50 to 200 cc/min (approximately 0.1 to 0.4 SCFH). Note: Always keep the calibration gas flow as close to the flowrate of the sample gas as possible 3.4.1 Zero Cal The Zero button on the front panel is used to enter the zero calibration function. Zero calibration can be performed in either the automatic or manual mode. Make sure the zero gas is flowing to the instrument.
Photometric Analyzer Operation 3 ####.## % SO2 4 Left=#.### SZero 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. 3.4.1.2 Manual Mode Zeroing Press Zero to enter the Zero function. The screen that appears allows you to select between automatic or manual zero calibration. Use the ∆∇ keys to toggle between AUTO and MAN zero settling.
3 Operation Model 6000A 3.4.1.3 Cell Failure Detector failure in the 6000A is usually associated with inability to zero the instrument with a reasonable voltage differential between the reference and measure voltages. If this should ever happen, the 6000A system alarm trips, and the LCD displays a failure message. Detector cannot be balanced Check your zero gas Before optical balancing: a. Check your zero gas to make sure it is within specifications. b.
Photometric Analyzer Operation 3 Use the < > arrow keys to toggle between the span concentration value and the units field (%/ppm). Use the ∆ ∇ arrow keys change the value and/or the units, as necessary. When you have set the concentration of the span gas you are using, press Enter to begin the Span calibration. ####.##% Slope=#.### SO2 Span The beginning span value is shown in the upper left corner of the display. As the span reading settles, the screen displays and updates information on Slope.
3 Operation Model 6000A When the Span value displayed on the screen is sufficiently stable, press Enter. (Generally, when the Span reading changes by 1 % or less of the range being calibrated for a period of ten minutes it is sufficiently stable.) Once Enter is pressed, the Span reading changes to the correct value. The instrument then automatically enters the Analyze function. 3.
Photometric Analyzer Operation 3 to non-alarm conditions. This mode requires an alarm to be recognized before it can be reset. In the non-latching mode, the alarm status will terminate when process conditions revert to nonalarm conditions. 4. Are either of the alarms to be defeated? The defeat alarm mode is incorporated into the alarm circuit so that maintenance can be performed under conditions which would normally activate the alarms. The defeat function can also be used to reset a latched alarm.
3 Operation Model 6000A –OR – Go to Ltch and then press either ∆ two times or ∇ two times. (Toggle it to N and back to Y.) 3.6 The Range Select Function The Range function allows you to manually select the concentration range of analysis (MANUAL), or to select automatic range switching (AUTO). In the MANUAL screen, you are further allowed to define the high and low (concentration) limits of each Range, and select a single, fixed range to run.
Photometric Analyzer Operation 3 Press Escape to return to the previous screen to select or define another range. Press Enter to return the to the Analyze function. 3.6.2 Auto Screen Autoranging will automatically set to the application that has at least two ranges setup with the same gases. In the autoranging mode, the microprocessor automatically responds to concentration changes by switching ranges for optimum readout sensitivity.
3 Operation Model 6000A If above screen displays, use the ∆∇ arrow keys to Select AUTO, and press Enter. Press Escape to return to the previous Analyze Function. 3.6.3 Precautions The Model 6000A allows a great deal of flexibility in choosing ranges for automatic range switching. However, there are some pitfalls that are to be avoided.
Photometric Analyzer Operation 3 0 0.01 0.1 80 90 100 Figure 3-2: Examples of Autoranging Schemes 3.7 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.
3 Operation Model 6000A If the concentration detected is overrange, the first line of the display blinks continuously. 3.8 Programming CAUTION: The programming functions of the Set Range and Curve Algorithm screens are configured at the factory to the users application specification. These functions should only be reprogrammed by trained, qualified personnel. To program, you must: 1. Enter the password, if you are using the analyzer’s password protection capability. 2.
Photometric Analyzer Operation 3 operator control. The Set Range Screen of the System function allows the user to DEFINE the upper and lower limits of a range AND the application of the range. The Range button function only allows the user to select or define the limits, or to select the application, but not to define the application.
3 Operation Model 6000A Use the < > arrow keys to move to Gas Name, FR: (from—lower end of range), TO: (to—upper end of range), and PPM or %. Use the ∆∇ arrow keys to increment the respective parameters as desired. Press Enter to accept the values and return to Analyze mode. (See note below.) Repeat for each range you want to set.
Photometric Analyzer Operation 3 tabular data of this type for a large number of gases, which it makes available to customers on request. See Appendix for ordering information. To enter data: From the System Functions Screen— 1. Use < > to select ALGORITHM , and Enter. 2. Select and Enter SETUP. 3. Enter MANUAL from the Calibration Mode Select screen. Dpt INPUT OUTPUT Ø Ø.ØØ Ø.ØØ The data entry screen resembles the verify screen, but the gas values can be modified and the data-point number cannot.
3 Operation Model 6000A Before starting linearization, perform a standard calibration. See section 4.4. To enter data: From the System Functions screen— 1. Use < > to select ALGORITHM , and Enter. 2. Select and Enter SETUP. 3. Enter AUTO from the Calibration Mode Select screen. The Auto Linearize Mode data entry screen appears. 19.5 ppm SO2 Input(Ø) :20.00 5. Use the ∆∇ keys to set the proper value of calibration gas, and Enter.
Photometric Analyzer Maintenance 4 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. WARNING: SEE WARNINGS ON THE TITLE PAGE OF THIS MANUAL. 4.1 Fuse Replacement 1. Place small screwdriver in notch, and pry cover off, as shown in Figure 4-1. Figure 4-1: Removing Fuse Block from Housing 2.
4 Maintenance Model 6000A 4. Reassemble Housing as shown in Figure 4-1. American Fuses European Fuses Figure 4-2: Installing Fuses 4.2 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.
Photometric Analyzer 4.3 Maintenance 4 Major Internal Components The major components in the Control Unit are shown in Figure 4-3. Figure 4-3: Control Unit Major Internal Components WARNING: HAZARDOUS VOLTAGES EXIST ON CERTAIN COMPONENTS INTERNALLY WHICH MAY PERSIST FOR A TIME EVEN AFTER THE POWER IS TURNED OFF AND DISCONNECTED.
4 Maintenance Model 6000A N N N N Figure 4-4: Rear-Panel Screws To detach the rear panel, remove only those four screws marked with an :. 4.4 Cleaning If instrument is unmounted at time of cleaning, disconnect the instrument from the power source. Close and latch the front-panel access door. Clean outside surfaces with a soft cloth dampened slightly with plain clean water. Do not use any harsh solvents such as paint thinner or benzene.
Part II: Analysis Unit OPERATING INSTRUCTIONS Model 6000A Photometric Analyzer Part II: Analysis Unit NEC Type Part Number D-65478 6000A - GP, Rack, Panel (Integral or Remote) 6000B - GP, Bulkhead (Z-Purged in Div II areas) (Integral or Remote) 6020 - (X-Proof, 1,1,B, C, D) (Integral or Remote) Teledyne Analytical Instruments Part II: i
Model 6000A Photometric Analyzer Table of Contents 1 Operational Theory 1.0 Introduction .................................................................... 1-1 1.1 Method of Analysis......................................................... 1-1 1.2 Optical Bench ................................................................ 1-2 1.3 Photometer Amlifier ....................................................... 1-3 1.4 Automatic Zero System .................................................. 1-4 1.
Part II: Analysis Unit 3.5 Service Procedures and Adjustments ............................ 3-3 3.5.1 Electronics ............................................................. 3-3 3.5.2 Power Supply Test Points ....................................... 3-3 3.5.3 Setup of the Signal Processing Front-End Amplifier .. 3-4 3.5.4 Oscilloscope Display of the I to E Converter Output .. 3-4 3.5.5 Balancing the Optics for Equal Light Transmission with Zero Fluid in the Sample Cell ......................... 3-5 3.5.
Model 6000A Photometric Analyzer iv: Part II Teledyne Analytical Instruments
Photometric Analyzer Operational Theory 1 Operational Theory 1.0 Introduction The Teledyne Photometric Analyzer uses the ultraviolet (UV) absorption principle to detect and continuously measure a component of interest in a sample stream. The analyzer consists of a single sample cell, chopped beam, dual-wavelength UV process photometer and associated microprocessor based control unit and electronics. 1.1 Method of Analysis The following description shows the course of optical energy in the analyzer.
1 Operational Theory 1.2 Model 6000A Optical Bench Depending on the application, the analyzer comes with one of the following types of lamps: Deuterium (D), Quartz Iodine (L), or Mercury (Hg). Energy from the lamp, used as a source, is focused through a sample cell onto a photo detector. In front of the detector is a motor-driven filter disc containing two optical filters mounted 180 degrees apart that alternately and continuously rotate into and out of the light beam.
Photometric Analyzer Operational Theory 1 6000A Unit Only D-69023 Teledyne Analytical Instruments Part II: 1-3
1 Operational Theory Model 6000A 6000B Remote Control Unit 6000B Integral Control Unit 1-4 Part II Teledyne Analytical Instruments
Photometric Analyzer 1.3 Operational Theory 1 Photometer Amplifier The photo detector converts the photo energy striking it to electrical energy. The magnitude of the photo energy pulses that strike the detector is determined by absorbance by the sample and the properties of the optical filters.
1 Operational Theory Model 6000A The procedure to set up the optical bench, the signal processing frontend amplifiers, the standardization of outputs, and alarm systems are described in separate sections of the manual. 1.4 Automatic Zero System To compensate for zero drift, which may occur during sampling, the analyzer zero reading is updated by the Auto-Cal function of the controller. An electronics timing circuit provides a timing cycle that is user programmable.
Photometric Analyzer Operational Theory 1 background chemicals below zero on an hourly basis. The zero fluid in this case is the sample of which the component of interest is filtered out while the background chemicals are preserved. The Auto Zero system corrects for background changes on an hourly basis, if the analyzer is set to Auto-Zero in an hourly basis. 1.
1 Operational Theory Model 6000A 1.6.1 Source Module Any one of three types of source modules may be used in your system. The system model designation identifies the source lamp (see Figure 1 for a list of codes). The QI (Quartz-Iodine) and D2 (Deuterium Arc) sources are mounted in the source module which also contains the focusing lens. The source power supply module provides power to the lamps.
Photometric Analyzer Operational Theory 1 1.6.2 Sample Cell The sample cell rests in a module placed between the source and detector module. The module contains the sample cell and optional heater and thermistor for temperature-controlled sample cells. Exposed Sample Module 1.6.3 Detector Module The detector module houses the photo detector, chopper assembly, and the signal processing stages of the electronics circuitry. The synchronized chopper motor rotates at 1800 rpm.
1 Operational Theory Model 6000A Chopper Motor Detector M/R Filter Wheel Span/Zero Flag and Solenoid Photodetector and Preamplifier PCB 1.7 Sample Systems Below are sample systems that deliver gases to the 6000/6020 sample cell of the Analysis Unit. Depending on the mode of operation either sample or calibration gas is delivered.
Photometric Analyzer Operational Theory 1 40 PSIG A F691 • V-469 Instrument Air in 90-100 PSIG V-570 Sample in • R-1584 Model 6000 Analyzer V-570 V-51 • G-306 V-320 F384 Eductor pump F-383 F-241 • • V Sample Flow (.2-2 SCFH) By-Pass Flow (2-20 SCFH) Zero in Span in V-570 V-469 Sample Return B Sample Return 0 PSIG ±.
1 Operational Theory Model 6000A C Sample Return to be 1 kg/cmA, non-condensing w/o back-pressure Heat tracing required 6000/6020 HT'D CELL @ 100C BACK PRESSURE NOT REQURIED IF RETURN IS STABLE AT 1.
Photometric Analyzer Operational Theory 1 Power Supply Control Unit Sample Cell Detector & Preamplifier Source Model 6000B Photometric Analyzer with D2 Lamp Analysis Bench shown with Integral General purpose bulkhead Control Unit Model 6000B Photometric Analyzer with D2 Lamp Teledyne Analytical Instruments Part II: 1-13
1 Operational Theory 1-14 Part II Teledyne Analytical Instruments Model 6000A
Photometric Analyzer Part II: Analysis Unit Installation Installation of the Model 6000 Photometric Analyzer includes: 1. Unpacking 2. Mounting 3. Gas connections 4. Electrical connections 5. Testing the system. 2.1 Unpacking the Analyzer The analyzer is shipped with all the materials 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. 2.
2 Installation Model 6000A 2.2.2 Electrical Power Connections The system requires a supply of 115 VAC, single-phase power. Power connections are made inside the control unit. Refer to the input-output diagram for more information. The electrical power service must include a high-quality ground wire. A high-quality ground wire is a wire that has zero potential difference when measured to the power line neutral. 2.2.
Photometric Analyzer Part II: Analysis Unit 2.2.7 Draining the System In liquid analysis systems, the system drain manifold must terminate in a safe area as the sample may be poisonous or corrosive. 2.3 Testing the System Before plugging the instrument into the power source: • Check the integrity and accuracy of the fluid connections. Make sure there are no leaks. • Check the integrity and accuracy of the electrical connections.
2 Installation Model 6000A 2. Calibration with a span filter (this method is available only if you select a span filter option when you purchase the equipment. Method One: 1. Inject zero fluid and set zero as referred in section 3.4 section I 2. Inject span fluid and set the concentration of the span fluid with the span procedure referred in section 3.4 section I Method Two: 1. Determine the span setting using Method One. 2. Activate the span filter (as referred in section 3.3.8) section I 3.
Photometric Analyzer Maintenance 3 Maintenance 3.0 Routine Maintenance 3.1 Automatic operation and routine operational duties The system operates continuously without adjustment. Under normal conditions, after you program the system for automatic operation, only routine maintenance procedures are necessary. The most common failure condition is a temporary interruption of the power serving the instrument.
3 Maintenance Model 6000A 3. Verify that the chart recorder contains a normal display. 4. Verify that the recorder has a sufficient supply of chart paper and ink. 3.3 Routine Maintenance Keep the sample lines and components, including the measuring cell within the analyzer sample module, free of deposits and leaks.
Photometric Analyzer Maintenance 3 2. Check the UV source. NOTE: Be sure to wear UV filtering eye goggles. 3. Check the solenoid valves. 3.5 Service Procedures and Adjustments 3.5.1 Electronics TAI aligns the system’s electronics. However, you may need to touch up the circuitry, using the following procedure. Equipment Required: Oscilloscope (dual trace is preferred, but not required) To observe oscilloscope test points switch the vertical input selector of the scope to DC.
3 Maintenance Model 6000A 3.5.3 Setup of the Signal Processing Front-End Amplifiers Fill the sample cell with air or a stable fluid, such that the photo energy that strikes the detector is constant. A stable fluid is distilled or tap water. This step may be omitted when the system is stable in its present state. If you open the detector module, keep stray light out by covering the opening with a dense black cloth. If you do not take this precaution, the result is a misinterpretation of the scope patterns.
Photometric Analyzer Maintenance 3 3.5.5 Balancing the Optics for Equal Light Transmission with Zero Fluid in the SAMPLE CELL The objective of this procedure is to obtain measuring and reference peak heights as displayed on the oscilloscope that are approximately equal, with the tallest peaks set at 8 to 9 volts. This must be done with air or zero fluid in the cell.
3 Maintenance Model 6000A b. If the measuring peak is equal to or within 1 volt of thereference peak, the system is optically balanced and ready for calibration. c. If the peak is still too short, repeat the procedure, but thistime put a screen behind the measuring filter to shorten its peak. 7. After the peaks are balanced, adjust the gain control until the tallest of the two peaks is 8 to 9 volts. The peaks should still be within1 volt of each other. 8.
Photometric Analyzer Maintenance 3 3.5.8 Integrated Reference and Measuring Signals You can observe the reference and measuring signal at the first stage of integration by connecting the scope probe to TP6 (reference signal) and TP7 (measuring signal) at the detector unit. A dual trace scope is advantageous but not required for this observation. The test points’ significance is that they reveal proper switch action.
3 Maintenance Model 6000A WARNING: DANGEROUS HIGH VOLTAGES ARE PRESENT AT THESE TERMINALS. TRAINED PERSONNEL MUST REMOVE THE SILKSCREEN COVER ONLY. EXERCISE EXTREME CAUTION. The first strip terminal has three contacts labeled N, G and H. The labels stand for Neutral, Ground, and Hot. This is the AC power strip terminal. It feeds AC power to other components of the Model 6000B System, such as the D2 lamp power supply, heater, and temperature controller PCB.
Photometric Analyzer Maintenance 3 SIG GND: Signal Ground. Ground reference for both the measure and the reference signal. MEAS: Measure Signal voltage. REF: Reference Signal voltage. The third terminal strip has eight contacts labeled -230 VDC, +15 VDC, -15 VDC, COM, SPAN FLTR, SPAN SOL, ZERO FLTR, ZERO SOL. This strip feeds the high voltage needed on the cathode of the photodetector, DC power for the photodetector preamplifier, and control signals for the solenoids and filters.
3 Maintenance 3-10 Part II Model 6000A Teledyne Analytical Instruments
Photometric Analyzer Appendix Appendix A-1 Specifications 6000A Digital Control Module: Ranges: Four Programmable Ranges, field selectable within limits (application dependent) and Auto Ranging Display: 2 line by 20 alphanumeric VFD accompanied by 5 digit LED display Signal Output: Two 0-1V DC (concentration and range ID) Two 4-20mADC isolated (concentration and range ID) RS232 Alarm: Two fully programmable concentration alarm set points and corresponding Form C, 3 amp contacts.
Appendix Models 6000A Typical Analytical Performance Specifications: (will vary per application) Accuracy: ±1% of full scale possible Noise: Less than ±1% Drift: Less than 1% per day (source/detector dependent) Diurnal: Less than 1% per 20oF (source/detector dependent) Sample Cell: Stainless steel with Quartz window standard. Other materials available. Cell Length: .01 to 40 inches Flow Rate: 50 to 1500 cc/min Light Source: Tungsten Lamp, Mercury, Deuterium Arc Sensitivity: .02 to 3 absorbance units.
Photometric Analyzer Appendix A-2 Recommended 2-Year Spare Parts List QtyP/NDescription C-67435B Motherboard, Control Unit C-62374 Power Supply PCB C-67990 Amplifier, Control Unit C-69205 6000A Interface PCB 1 A-9306 Differential Power Supply 1 C-40265A Measuring PCB 1 C-54799 D2 Power Supply 1 C-54802 Controller, D2 Power Supply 1 C-14449 Temperature Controller, Sample Cell 1 L-179 Source Lamp 5 F-57 Fuse, 5A Slo-Blo 5 F-14 Fuse, 10A Slo-Blo 1 P-43 Phototube 2 C87 Sam
Appendix Models 6000A A-3 Drawing List D67061: Outline Drawing (standard unit with optional sealed ref.) D67056: Outline Drawing (with optional gas selector panel and/or sealed ref.
