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2–5

Operational Theory  2.0

Teledyne Analytical Instruments

A Business Unit of Teledyne Electronic Technologies

NORM/ZERO switch on the power module set to the NORM position, the
meter will provide a constant readout of either the reference level or the
measuring level. During calibration periods, the ZERO switch control may
be used to monitor the signal into the E-to-I converter, and if a known zero
sample is applied, then the ZERO potentiometer may be varied to ensure
zero output to the control unit.

Figure 2-3.

Power Module - Block Diagram

All of the temperature controller circuit cards for the analyzer are

located in the power module. The schematic diagram for these circuits is
shown in dwg. B-15016.

The purpose of the time-proportional temperature controllers is to sense

the temperature in the compartment or volume to be controlled and, at a rate
of approximately twice per second, turn on the heater(s) for a specified
portion of the time cycle, depending upon how much heat is needed. When

–

15 VDC

Coarse

Zero

Control

Selector

Switch

MEAS

REF

ZERO

Power

Line Voltage

Regulator

Transformer

5A

S1

115 VAC

60 Hz

Input

Fr

om

 D

et

ect

o

r M

od

ul

e

Preheater

Temp.

Control

Sample
Module

Temp.

Control

Detector

Module

Temp.

Control

Thermistor

and Heater

Thermistor

and Heater

Thermistor

and Heater

To Log Amplifier

To Meter Driver

115 VAC to

Source Module

115 VAC to

Detector Module

Содержание 514

Страница 1: ...AY BE PRESENT IN THIS MONITORING SYSTEM PERSONAL PROTECTIVE EQUIPMENT MAY BE REQUIRED WHEN SERVICING THIS SYSTEM HAZARDOUSVOLTAGESEXISTONCERTAINCOMPONENTSINTERNALLYWHICHMAYPERSISTFOR 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 MANAGE...

Страница 2: ...ons 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 a tool to gather valuable data The informa tion provided by the instrument may assist the user in eliminating potential hazards caused by the process that the instrument is intended to monitor however it is essential that all personnel involved...

Страница 3: ...Source Module 2 2 2 1 2 Sample Module 2 3 2 1 3 Power Module 2 4 2 1 4 Detector Module 2 8 2 1 5 Control Module 2 10 3 0 Installation 3 1 Location 3 1 3 2 Sample Saction Installation 3 1 3 2 1 Filtering 3 1 3 2 2 Effluent Return 3 2 3 2 3 Flow Control 3 2 3 2 4 Selector Manifold 3 3 3 2 5 Automatic Zero Operation 3 3 3 3 Electrical Installation 3 3 3 3 1 Power Check 3 3 3 4 Analysis Unit 3 5 3 5 O...

Страница 4: ...ration 4 6 5 0 Maintenance Troubleshooting 5 1 Replacement of Sample Cell Optics 5 2 5 2 Replacement of Filter Wheel Optics 5 2 5 3 Replacement of Source Lamp Assembly 5 3 5 4 Replacement of Filter Position Sensor 5 4 5 5 Replacement of Preamplifier Circuitr Card 5 4 5 6 Re screening of Lens 5 5 5 7 Troubleshooting 5 5 Appendix Specifications A 1 Application Data A 2 Recommended Spare Parts List A...

Страница 5: ...organic compound in the presence of another organic compound 1 1 Method of Analysis The 514 contains an optical system consisting of a quartz iodine source lamp for NIR energy emission collimating lens sample cell and detector Isolator or light beam tubes filled with nitrogen gas interconnect the source and sample and sample and detector modules In front of the detector is a motor drivenfilterwhee...

Страница 6: ... center band pass of the reference filter is selected to transmit energy in a band pass region where the background absorption of NIR energy is equivalent to that seen by the measuring filter The reference filter is also selected to be in a region where the component of interest has minimal absorption of energy The optical beam is converted from steady state to pulsed energy by the rotation of the...

Страница 7: ...1 3 Introduction 1 0 TeledyneAnalyticalInstruments A Business Unit of Teledyne Electronic Technologies Figure 1 1 Model 514 Photometric Analyzer with General Purpose Control Unit ...

Страница 8: ...TeledyneAnalyticalInstruments A Business Unit of Teledyne Electronic Technologies 1 4 1 0 Introduction Figure 1 2 Model 514 Photometric Analyzer with Explosion Proof Control Unit ...

Страница 9: ...e power module contains a line voltage regulating transformer with capacitor andthreetemperaturecontrollercircuitcards Each of the controllers incorporates a bridge circuit containing a ther mistor located in the volume compartment to be controlled Bridge imbalance produces an error signal resulting in operation of the final control element heater to restore bridge balance and controlling the temp...

Страница 10: ...ibration meter is used as an all purpose readout in this case there is some modification in the switching at both the control module and power module In addition to control switching adjustment zero and span and read out components the control module has provisions for five circuit cards an automaticzero extendedvoltageamplifier E to Iconverter I to Econverter power supply and alarm comparator The...

Страница 11: ...ride Chloroprene 0 200 ppm Chloropicrin 0 200 ppm DeuteriumOxide 0 200 ppm Epichlorohydrin 0 2000 ppm Ethylene Glycol 0 500 ppm Freons 0 500 ppm Gasoline 0 500 ppm Hydrogen Fluoride 0 10 Hydroperoxides 0 5 Kerosene 0 500 ppm Ketones 0 1000 ppm MethylAcetate 0 1000 ppm MethylMethacrylate 0 1000 ppm Oils 0 1 Olefins 0 500 ppm Pentane 0 300 ppm α Picolene 0 300 ppm Phenol 0 1000 ppm Polyols 0 500 ppm...

Страница 12: ...edyne Electronic Technologies 1 8 1 0 Introduction OTHER NIR ABSORBERS Acetic Acid Alcohols Amines Aromatics Butadiene Carbonyls Chloroprene Esters Hydrocarbons Hydrogen Chloride Hydrogen Fluoride Hydroxyl Value Ketones Olefins Oximes Epoxides Methylene ...

Страница 13: ...te pulse is from the reference filter so that pulses through the measuring filter alternate with pulses through the reference filter A filter position sensor which is an optical device having an integral light source and light detector differentiates between the two The two entrained pulses received by the detector each revolution are amplified through a preamplifier which is physically located in...

Страница 14: ...s for calibration Following the span control a buffer amplifier provides isolation between the calibrated signal and any of the selected output devices This signal is then sent to the meter driver circuit and readout meter to the alarm comparator circuits voltage output circuits current output circuits etc depending upon the particular application requirement There is also an option of providing a...

Страница 15: ... of the NIR radiation between the source and the detector modules Each compound in the sample path exhibits its own characteristic absorption spectrum Cell spacer thicknesses will vary depending upon the absorbance of the component of interest at the measuring wavelength Due to the possible variation of absorption with temperature it is necessary to main tain the sample at a constant temperature d...

Страница 16: ...r modules In the case of the explo sion proof configuration where the control unit is mounted locally the power module simply routes the AC input power to its destination and allows the control unit to provide the ON OFF function When power is applied to the system it is directed to the constant voltage transformer and to the three temperature controllers which are insensitive to line voltage fluc...

Страница 17: ...rds for the analyzer are located in the power module The schematic diagram for these circuits is shown in dwg B 15016 The purpose of the time proportional temperature controllers is to sense the temperature in the compartment or volume to be controlled and at a rate of approximately twice per second turn on the heater s for a specified portion of the time cycle depending upon how much heat is need...

Страница 18: ...imately one half second The output voltage from the temperature amplifier A1A will range from less than 6 volts to something more than 12 volts When the output voltage is greater than 12 volts the TRIAC will be turned on a full time interval each cycle When the output is less than 6 volts the TRIAC will be turned off all the time When the output is in the middle of the range approximately 9 volts ...

Страница 19: ...h the MEAS REF and ZERO controls When used with the explosion proof control module the NORM REF and NORM MEAS switches are used on the module instead of the MEAS REF switch A NORM ZERO switch is also included PbS Detector Preamplifier Video Signal Clamp Clamped Video Switch Driver Filter Position Sensor C l a m p i n g S w i t c h T i m i n g S i g n a l To Power Module Heater Therm Detector Compa...

Страница 20: ...ximum stability and minimum noise This box or compartment is normally temperature con trolled at 46 C The negative going video from the preamplifier is fed to the clamp circuit see dwg B 14561 to establish a precise zero reference to the baseline of the pulses This is accomplished by applying a gate to Ql at a time when neither filter is in the energy path This gated signal is fed through A2 where...

Страница 21: ...ave which alternately allows the signals to be fed into the log amplifier A1 itself and then blocks the measuring level and feeds the reference level into both log amplifier inputs allowing it to zero itself The log signal is then applied through amplifier A4 and A6 to A7 where a coarse zero offset voltage may be applied through the ZERO potentiometer on the power module For less sensitive applica...

Страница 22: ...meter output Optional provisions are also included for an automatic zero and dual range capability Upon arrival at the control module the milliampere signal is con verted to a 0 to 2 volt full scale output for connection to the span potentiometer see dwg A 14620 An optional millivolt output can also be provided by the I to E converter circuit card At this point fine zero control is also applied by...

Страница 23: ...ply outputs are 24 VDC unregulated and 15 VDC regulated Ext Volt Amplifier Alarm Comparator Auto Zero Timer Manual Setpoint Adjust 1 2 Relays N O Com N C N O Com N C E to I Converter Current 4 to 20 mA Standard Valve Control Signal Span Adjust Meter Indication Voltage 0 to 1 V f s Millivolts 0 to 5 mV f s To I to E Converter T o Timer 15 VDC 24 VDC Power Supply Power Transformer Manual Fine Zero P...

Страница 24: ...2 12 2 0 Operational Theory TeledyneAnalyticalInstruments A Business Unit of Teledyne Electronic Technologies ...

Страница 25: ...rsion of the analyzer is suitable for installation in Class I Group D Division I areas Since the analysis section of the general purpose version of the analyzer is enclosed in a weather resistant enclosure it is suitable for outdoor location The control module of the general purpose version of the analyzer is generally intended for flush panel mounting indoors in general purpose areas 3 2 Sample S...

Страница 26: ... pressure fluctuations Constant flow may or may not be important depending upon the application It is necessary to insure sufficient contact of the sample with the preheater in order to bring the sample up to the control temperature Do not allow flow in excess of 50 ml minute For liquid applications TAI recommends that the throttle valve and flowmeter always be downstream from the analyzer Such an...

Страница 27: ...ith a minimum expenditure of fluid 3 2 5 Automatic Zero Operation Analyzers equipped with automatic zero control will require a three way electrically or pneumatically actuated valve in the sample system In addition if it is undesirable for zero fluid to return to the process a similar three way valve must be used for the calibration fluid return In addition a time delay on the operation of the se...

Страница 28: ...odule power in TS2 14 Hot TS2 13 Neutral TS2 12 Ground Controlmoduleoutput TS2 1 Com 0 1 V output TS2 2 TS2 3 Com mA output TS2 4 TS2 10 Com mV output TS2 9 TS1 1 mA output isolated TS1 2 TS1 6 Com TS1 7 N O alarm relay K1 TS1 8 N C TS1 9 Com TS1 10 N O alarm relay K2 TS1 11 N C NOTE In order to maintain the explosion proof integrity of the system interconnecting wiring between the power and contr...

Страница 29: ...ersion Control Unit Control unit input power connections are to be found at TS2 pins 14 line 15 neutral 16 ground see dwg C 15245 The input resistance between line and neutral with the ON OFF switch in the ON position should be infinite resistance General Purpose Version Power Module Power Module input power connections are at TS1 pins 1 line 2 neutral 3 ground see dwg C 15245 The input resistance...

Страница 30: ...se lamp bracket and moving the assembly up or down 2 Horizontal position is achieved by loosening the Allen screw at the base of the lamp holder which allows side to side movement of the lamp 3 Beam focusing is then achieved by loosening the lens holding bracket and moving the lens back and forth until the best focusing is obtained 4 First visually optimize the lamp energy using a white piece of p...

Страница 31: ...brate your equipment as part of start up for the following reasons 1 During shipment it is possible that components have been jarred out of position or damaged 2 Your process may be of a proprietary nature Beyond checking electrical stability TAI is unable to make a meaningful calibra tion of the system requiring these adjustments to be made by you 3 In other cases precise calibration can only be ...

Страница 32: ...of this switch 3 MEAS REF selects either the measuring or reference peak voltage to be fed to the local meter driver The NORM ZERO switch must be in the NORM position the reference peak voltage should read 9 0 1 volts With zero fluid in the sample cell the measuring peak voltage should be the same as the reference peak voltage 4 ZERO potentiometer control allows an adjustment of the analysis secti...

Страница 33: ...rmined amount such as 4X or 5X i e dual range low range of 0 100 ppm and a high range of 0 500 ppm 6 Mode selector for units incorporating an automatic zero SAMPLE position is the automatic zero ZERO position is the manual zero SPAN position is the manual span adjustment 7 Meter Readout indicates the concentration of the component ofinterest 4 1 3 Explosion Proof Version Control Module When the co...

Страница 34: ... 5 0 TAI recommends that a dual trace oscilloscope be used A dual trace oscillo scope will permit the operator to see two different waveforms simulta neously 4 2 1 PreliminaryInspection Before power is supplied to the analyzer all modules should be opened and inspected for damage or loose components Plug in circuit cards should be firmly seated in their sockets All barrier strip wiring connections...

Страница 35: ... ON OFF switches to ON and make the following observations 1 Open the analysis section detector module and verify that the chopper motor is operating The motor should start turning the instant power is established If it does not check the integrity of the main fuse on the control module door If the fuse is blown re check the power service connections on TS2 in the control module and the control mo...

Страница 36: ...dardization fluids are necessary to calibrate the analyzer 1 Zero Fluid The zero standard fluid must have a composition similar to the sample and ideally contains none of the components of interest The zero fluid should be laboratory analyzed to determine its composition The exact composition must be known as the accuracy of the analysis can be no better than the your knowledge of the standardizat...

Страница 37: ...lters require re screening If the analyzer has been in use for some time it is possible that the sample cell windows need cleaning or that a filter has deteriorated Another cause of peak imbalance might be that the sample chemical background has changed In some cases TAI is not able to duplicate the background your sample for purposes of optically balancing the analyzer before shipment In these ca...

Страница 38: ...e correct meter reading with reference to the concentration of span fluid For example if the sample contains 100 of whatever the instrument is set up to analyze then the SPAN control must be adjusted for a full scale reading i e 200 ppm water in EDC 10 Re check the ZERO setting with zero fluid 11 If desired the linearity of the analyzer can be checked with a fluid intermediate in concentration bet...

Страница 39: ... can be cleaned if necessary with mild detergent and water or with a solvent such as ethanol 2 The filters are sensitive to moisture and can be damaged by water They are held in place with epoxy cement which may be attacked by solvents Therefore if filters must be cleaned beyond the removal of dust with a brush they may be cleaned by application of ethanol with a cotton tipped swab being careful n...

Страница 40: ...rminal strips However observe caution when removing backplate from condulet make sure that wire is not twisted or pulled from connections 6 Disassemble sample cell see Figure 5 2 7 To reinstall the sample cell reverse the removal disassembly procedure 5 2 Replacement of Filter Wheel Optics If it becomes necessary to replace filter wheel optics or re screen filter s proceedasfollows 1 Remove four s...

Страница 41: ...toward the right side of the module i e away from the lens Make lamp electrical connections to terminals TS1 3 and TS1 4 greenleads After replacement it may be necessary to adjust the lens associated with the source lamp Two screws secure the lens mount by means of slotted mounting holes permitting horizontal and vertical adjustment of the lens Likewise the screw securing the source lamp mount can...

Страница 42: ...lvent 5 4 Replacement of Filter Position Sensor The filter position sensor is installed within the detector compartment the sensor is secured to its mount by a single 4 40 screw To replace the sensor proceed as follows 1 Remove the four screws securing the detector compartment cover remove the cover from compartment 2 Remove mounting screw Pull the sensor free from its mount 3 Tag all wiring then ...

Страница 43: ...on If there is too much light for a particular application R4 is reduced to approximately 1 megohm If there is still too much light the light path can be attenuated by installation of a screen in the lens holder held in position by theinstalledlens 5 7 Troubleshooting When troubleshooting the analyzer it may be helpful to note that the reference and measuring level signals are split at the peak le...

Страница 44: ...cuit card if required Check switch signal outputs from switch driver and clamp circuit card P P S and S Check filter installation The measuring filter should be installed adjacent to the white painted arc see Figure 5 1 Cause Source lamp burned out Changes in voltage to source lamp i e changes in line voltage supply to lamp Preamplifier not providing a strong enough output signal Source lamp burne...

Страница 45: ...ntroller circuitry Corrective Action Check replace if required If meter sits on zero also check auto gain control circuit card replace if required Check log amplifier for 0 to 0 4 VDC full scale output If IC A1 is replaced make sure that balance potentiometers are adjusted Refer to Table VI Check input to pin 14 If input is correct check output at pin 15 for 0 to 4 VDC full scale Replace I to E co...

Страница 46: ...sts output at 20 mA for 0 5 VDC input Span adjustment coupled with factory select R8 and R16 adjusts output of A2 for 0 4 VDC full scale Meter trim adjustment adjusts meter driver and amplifier Balance adjustments for logarithmic amplifier A1 see Note 1 Span adjustment coupled with factory select R13 and R17 adjusts output of A7 signal to E to I converter for 0 4 VDC full scale Meter trim adjustme...

Страница 47: ...t In order to make the adjustments have an extender card a 100K resistor for connection between A1 2 and A1 7 across C5 and a high impedance voltmeter handy to measure the voltage between A1 7 and connector pin 9 Proceed as follows 1 Temporarily install 100K resistor across A1 2 and A1 7 across C5 2 Disconnect connector pin 9 from 9 VDC by lifting a connection on the extender card Connect pin 9 of...

Страница 48: ...sistor stable not composition type between A1 2 and A1 7 across C2 3 Unplug A2 A3 and A5 4 Jumper A5 7 to A5 5 at socket and A2 3 to A2 6 at socket 5 Install card in card extender and turn on analysis unit power 6 Verify that voltage to pin 7 of the card edge connector is approximately 9 VDC measure between pin 7 and pin 14 7 Adjust potentiometer R10 until the voltage measured at A1 7 is zero with...

Страница 49: ...etween line and neutral with ON OFF switch in the ON position should be 4 ohms 10 The resistance between ground hot and ground neutral should be infinite resistance General Purpose Version Control Unit Control unit input power connections are to be found at TS2 pins 14 line 15 neutral 16 ground see dwg C 15245 The input resistance between line and neutral with ON OFF switch in the ON position shou...

Страница 50: ...tical alignment is to bring the optimum source energy to the detector Generally the optimum energy will be the maximum amount of energy which can be focused on to the detector This can be done by adjusting the various elements in the source module see dwg C 14628 See warning above Use a Variac on the input AC line to reduce the voltage and the lamp intensity to a tolerable level 1 Vertical lamp po...

Страница 51: ...are selected per application by the Photometric department Measuring and Reference Optical Filters The Photometric department will supply the optical filters mount each filter in a filter holder TAI P N A1810 using 5 minute epoxy Mount these optical filter assembly in the filter chopper wheel The measuring filter is mounted on the edge of the chopper wheel with the white strip see Fig 5 1 Proporti...

Страница 52: ...e applications Dual Range Strap C to I and D to T Millivoltoutput Optional R8 and R9 Filter Position Sensor Adjustment The filter position sensor is mounted in the detector condulet assembly see dwg C 14667 To adjust this sensor power supplies installed 1 Plug in the switch driver Clamp the PCB into a card extender and insert into the detection module 2 Loosen the sensor bracket mounting screw 3 A...

Страница 53: ...h driver card in the analyzer Balancing the Measuring and Reference Peak Heights For the electronic checkout the peak heights are balanced with air in the sample cell The peak heights will later be re balanced with sample in the sample cell prior to chemical calibration The peaks must be balanced within 10 in air before the electronic calibration can be accurately completed 1 Connect an oscillosco...

Страница 54: ...ally 100 to 1 3 Remove required screens in the light path to bring the voltage at TP1 violet back between 0 4 to 2 volts P P Install the peak level detector PCB With the scope at TP3 of the AGC you should see the wave form come out of saturation due to AGC control 4 Connect one input of the oscilloscope to TP5 on the Switch Driver and clamp Connect other input to TP3 on AGC The spike should be clo...

Страница 55: ...eter trim circuit adjustment below is common to all three log boards The three sections after that describe individual log amplifier adjustments Meter Trim Circuit Adjustment This adjustment calibrates the local meter so that its readings correlate with known voltages in from the peak level detector PLD General Purpose Control Unit 1 Set the power module control functions as follows MEAS REF to RE...

Страница 56: ...ers R7 and R9 in order to balance the circuit To make the adjustments the user must have an extender card a 100KΩ resistor for connection between A1 2 and A1 7 across C5 and a high impedance voltmeter to measure the voltage between A1 7 and connector pin 9 Proceed as follows 1 Temporarily install a 100K resistor across A1 2 and A1 7 across C5 2 Disconnect connector pin 9 from 9 VDC by lifting a co...

Страница 57: ...nts it is necessary to have an extender card one 20KΩ resistor and a high impedance voltmeter Proceed as fol lows 1 Use an extender card so that connections are accessible 2 Temporarily connect a 20KΩ resistor stable not composition type between A1 2 and A1 7 across C2 3 Unplug A2 A3 and A1 4 Jumper A5 7 to A5 5 at socket and A2 3 to A2 6 at socket 5 Install card in card extender and turn on analy...

Страница 58: ... Meter should read 9 VDC 20 Switch the NORM ZERO switch to ZERO position Adjust the coarse ZERO to cause the meter to read zero The ZERO control should end up around 500 21 The remainder of the adjustments on this PCB must be made by TAIPhotometricpersonnel Chopper Stabilized Adjustable Log Ratio Amplifier Dual Log Board See dwg C 17706 The dual log circuit is used when it becomes necessary to une...

Страница 59: ...il the voltage measured at A1 7 is zero with respect to signal common TP3 g Remove jumpers installed in step c h Remove resistor connected in step a i Set R34 to give 9 volts on A9 6 Also set R34 to give 9 volts on A9 14 j Remove Q1 from its socket k Disconnect connector pin 7 from input by lifting a connection on the extender card l Temporarily connect a 20K resistor between A5 7 and A5 15 to A1 ...

Страница 60: ...e of 0 to 0 4 volts from the log PCB the output from E to I PCB will be 10 to 18 mA 1 Insert this board in the analyzer using a card extender 2 Adjust the coarse ZERO control on the power module for zero volts into the E to I converter Measure this voltage with a DMM at TP1 red on the log board or at pin 6 of the E to I circuit boardconnector 3 Adjust R7 to give 10 mA output between pins 1 and 13 ...

Страница 61: ...r on the test jig will simulate the thermistor resistance As this pot is varied the lamp simulating the analyzer heater will turn on and off b Place the PCBs in their normal positions in the analyzer power module Connect a 100V neon lamp between the case of Q1 and the positive side of C1 or across the heaters When the heater has reached temperature equilibrium the lamp will blink on and off at a r...

Страница 62: ...rd connector pins Set the SPAN setting to 250 or higher 2 Adjust the coarse ZERO potentiometer on the power module to give zero volts on the DMM The control unit meter should read zero 3 Adjust the coarse ZERO potentiometer to give the full scale output voltage on the DMM generally 1 00 volt If the 0 1 volt adjustment cannot be made with the coarse ZERO increase the spancontrolsetting 4 Once the i...

Страница 63: ... to F E B to G C to D Dual Below Below A to G D B to F C to E Dual Above Below A to F D B to G C to E Dual Below Above A to G E B to F C to D Single Below A to G B to F Single Above A to F B to G 2 Single Alarm PCB Adjust R2 until 1 volt is obtained at the full clockwise position of P2 setting of 1000 If the instrument output of the alarm is set for 1 volt full scale the alarm is set for 1 volt fu...

Страница 64: ...luid is the background fluid with a minimum amount of the component beingmeasured 11 With an oscilloscope check the waveform at TP1 violet Balance measure and reference peaks heights within 20 The clamped video should be between 0 4 to 2 volts P P The base line is clamped to ground Change the preamplifier gain resistor R4 to obtain 0 4 to 2 volts P P if necessary 12 Connect one lead of a dual trac...

Страница 65: ...volts 15 On the chopper stabilized log board place a DMM at TP1 red Adjust the coarse ZERO control on the analysis unit to give an output equal to Cz Cfs Vfs Vfs equals the voltage output from the chopper stabilized log board for a full scale deflection which equals 400 mV For example if Cz 1 Cfs 10 then the voltage output at TP1 will equal 1 10 400 mV 40 mV 16 Set the span control on the control ...

Страница 66: ... on the analysis unit until the voltage at TP1 red is equal to Cs Mfs Vfs 21 Record the following data a VDC on PLD TP3 and TP4 b VDC on chopper stabilized log operator TP1 red c AC P P on chopper stabilized log operator TP2 yellow d AC P P on automatic gain control PCB TP1 violet e Control unit meter readout 22 An oscilloscope on TP2 yellow will display a 400 Hz square wave If this peak to peak v...

Страница 67: ...tration Record the data points as in step 23 25 Lock zero fluid in the sample cell Run overnight stability Visually inspect the sample cell for bubbles indicating sample outgassing and cell leakage Stability can also be run by removing the liquid from the sample cell and drying out the cell with acetone followed by dry nitrogen or air purging Screen the optical path to obtain the same P P voltages...

Страница 68: ...0 5 0 Maintenance Troubleshooting TeledyneAnalyticalInstruments A Business Unit of Teledyne Electronic Technologies O Rings Window Clamp Clamp Cell Cell W indow Holder Figure 5 2 Sample Cell Exploded View ...

Страница 69: ...others available length per application Flow Rate Typically 50 200 cc min depending upon application Ambient Temperature 0 to 50 C without available auxiliary heating Electrical Requirements 115 VAC 60 Hz standard Readout Device Meter on control module Analog Output Signal 0 1 V standard Options Designated by Model Suffix B1 Local Explosion Proof Control Unit B2 Remote Explosion proof Control Unit...

Страница 70: ..._________ Start up SPAN setting _________________________________________ Noise _________ Linearity ___________ Diurnal _____ Optics Source _________________________________________ Measuring Cell Length _________________________________________ Materials Spacer _________________________________________ O Ring _________________________________________ Windows ______________________________________...

Страница 71: ...Module Assembly C 14628 Sample Module Assembly C 17356 Detector Module Assembly D 14665 Detector Box Subassembly C 14667 Analyzer System Outline w Integral Explosion Proof Control Unit C 15644 Analysis Unit Outline C 18313 Control Unit Outline General Purpose B 15066 Electrical Power Module Proportional Temperature Controller Sch B 15016 Proportional Temperature Controller Assy B 14449 Electrical ...

Страница 72: ...907 Log Ratio Amplifier Assy B 14083 E to I Converter Sch B 14075 E to I Converter Assy B 14453 Electrical Power Supply Regulated Power Supply Sch B 14708 Regulated Power Supply Assy A 9306 Interconnection Diagrams Analyzer System w Explosion Proof Control Unit B 16571 Analyzer System w General Purpose Control Unit C 15245 Spare Parts List QTY P N DESCRIPTION Power Condulet Assembly 5 F11 Fuse 5 A...

Страница 73: ...eak Level Detector 1 B14453 Printed Circuit Card Assembly E I Converter 1 B14083 Printed Circuit Card Assembly Log Ratio Module or 1 B14579 Printed Circuit Card Assembly Chopper Stabilized Log Amplifier 1 S239 Filter Position Sensor 1 T174 Thermistor 1 B14668 Detector Cell Assembly 1 A14505 Printed Circuit Card Assembly Preamplifier 1 D60976 Power Supply Assembly A minimum charge is applicable to ...

Страница 74: ...A 6 Appendix TeledyneAnalyticalInstruments A Business Unit of Teledyne Electronic Technologies ...

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