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Teledyne 6750 User's Manual

1. 13 Figure 2 8 Relationship Between TIC and pH 15 Figure 2 9 Oxidation 16 Figure 2 10 Model 6750 NDIR 17 Figure 3 1 Analyzer Dimensions 1 2 2 0 1 7 22 Figure 3 2 Required Door Clearance 22 Figure 3 3 Internal Components of the Model 6750 Analyzer 23 Figure 3 4 Electrical Connections to the Model 6750 24 Figure 3 5 Gas and Liquid Connections to the Analyzer 26 Figure4 1 Drain Connections 30 Figure 4 2 Gas Liquid Separator D 1 Filling 31 Figure 4 3 The RUN 2 2 21 2144 40444 4 40 Figure 5 1 Disconnecting Tubing from Reactor 46 Figure 5 2 IR Calibration Adapter P N 5720026 46 Figure 5 3 Installing Calibration Adapter 47 Figure 5 4 Removing the NDIR Unit P N ST 36000 48 Figure 5 5 Removing the Master Interface Board 53 Teledyne Analytical Instruments ix Model 6750 Figure 5 6 DC Power Supply Module 54 Figure 5 7 Replacing CE Computer
2. 55 Figure 5 8 UV Lamp Replacement 56 Figure 5 9 Removing the UV Reactor Assembly 57 Figure 5 10 Removing the UV Power Supply 59 Figure 5 11 Mass Flow Controller ee coe techn 60 Figure 5 12 Metering Valve 61 Figure 5 13 Spar goi censeo i iei ea di Uus 62 Figure 5 14 Removing the 65 Figure 5 15 Pump Head Tubing Replacement 67 Teledyne Analytical Instruments x Total Organic Carbon Analyzer List of Tables Table 4 1 Preparation of Standards Table 5 1 Troubleshooting ia elio Teledyne Analytical Instruments xi Model 6750 DANGER COMBUSTIBLE GAS USAGE WARNING This is a general purpose instrument designed for use in a non hazardous 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 operating this equipment are well understood by the user Misuse of this product in any manner tampering with its components or unauthorized substitution of any component may adversely affect the safety of this instrument Since the use of this instrument is beyond the control
3. Teledyne Analytical Instruments Total Carbon Analyzer Introduction All other types of usage beyond the intended use stated above are considered as misuse of the analyzer The supplier assumes no responsibility for damage incurred as the result of misuse of the product 1 5 Operator Interface The Model 6750 Analyzer is housed in a rugged metal case and may be wall or rack mounted for operator convenience The enclosure is equipped with a viewing window on the front panel and all operator serviceable components may be viewed through the cabinet window including the display WINDOWS CE COMPUTER Uv REACTOR PERISTALTIC 5 Figure 1 1 Model 6750 Analyzer Front door removed All operations are automatic and are performed using the Windows Touch Screen Computer 4 Teledyne Analytical Instruments 3 Introduction Model 6750 ita wiwa mE IE Teledyne Analytical Instruments Total Organic Carbon Analyzer Theory of Operation lc oso c XR 422 a ult Theory of Operation 2 1 Overview The Model 6750 Analyzer uses the UV Heated Persulfate method of analysis and is well suited for many applications involving accurate TOC analysis The basic analyzer is configured for maximum utility using an advanced Microsoft Windows based CE computer with touch screen The analyzer is suitable for both general purpose and or hazardous area classifications if proper
4. Figure 5 13 Sparger Teledyne Analytical Instruments 62 Total Organic Carbon Analyzer Maintenance RW C 5 3 12 Pumps If any of the pumps are not pumping liquid flow is not observed moving up the tubing check to see if the motor is turning the pump heads and the motor is not binding Check for proper power and connections to the pump motor If the motor has failed e g open windings etc replace motor For 110 V 2 RPM motor use P N ST18002 for 220 V 2 RPM motor use P N ST18003 For pump motor replacement refer to Section 5 3 12 1 and Figure 5 14 If the motor is operating properly worn tubing is the probable cause for poor or non existent pumping Retube pump heads as described in Section 5 3 12 2 and Figure 5 15 5 3 12 1 PUMP MOTOR REPLACEMENT Note Masterflex pump heads must be removed for access to Pump Motor Mounting Screws suqej 1 Turn main power OFF 2 Remove 4 wing nuts from pump head mounting hardware Teledyne Analytical Instruments 63 Maintenance Model 6750 3 Remove pump as illustrated to gain access to pump mounting screws 4 Remove two thumbscrews for pump panel removal 5 Disconnect Pump Motor Connector Teledyne Analytical Instruments 64 Total Organic Carbon Analyzer Maintenance RW C 6 Remove 4 pump mounting screws for pump removal 7 Replace motor and reassemble in reverse step sequence Figure 5 14 Removing th
5. e O Turn carrier gas Air O2 OFF Turn pumps OFF Remove fittings and tubing Remove metering valve Recalibrate TIC if TIC and or TOC TRUE analysis is required NPOC analysis only does not require recalibration Reinstall metering valve in reverse order Teledyne Analytical Instruments 60 Total Organic Carbon Analyzer Maintenance ll Figure 5 12 Metering Valve 5 3 11 Sparger P N ST20025 The sparger may be removed for cleaning with detergent and subsequent flushing with DI water If the sparger inner glass body 15 observed to be leaking cracked glass etc or is clogged beyond cleaning replace sparger P N ST20025 according to the directions below See Figure5 13 To replace the sparger CAUTION CONTACT WITH ACID LIQUID OR VAPOR CAN DAMAGE TISSUE CAUSE EYE DAMAGE RESULT IN SEVERE BURNS AND CAUSE LUNG AND RESPIRATORY DAMAGE WEAR PROPER PROTECTIVE CLOTHING AND SAFETY GLASSES WITH SPLASH SHIELDS TREAT ALL ACIDS WITH CAUTION AND HANDLE WITH CARE ALWAYS WORK IN AN APPROVED FUME HOOD WHEN HANDLING OPEN CONTAINERS OF ACIDS 4 Teledyne Analytical Instruments 61 Maintenance Model 6750 Turn machine OFF Turn carrier gas OFF Remove and drain tubing and sparger gt PP Remove sparger from spring clips To clean the sparger 1 Run warm water through tubing to flush out any solid contamination 2 Reinstall sparger in reverse order
6. Figure 2 1 15 a basic commonly used technique to measure the NPOC sometimes referred to as TOC Direct VENT TIC CO Sample TIC NPOC Oxidation CO NPOC Removal 2 gt Reactor Detector Acid A Carrier Air or O Figure 2 1 NPOC or TOC Direct Method In this method acid is added to the sample lowering its pH to approximately 2 0 at which point the carbonates present in the sample are converted to dissolved In the sparger the carrier gas strips sparges the CO converted from the TIC and vents it along with any purgeable volatile organics leaving only NPOC in the sample The resultant NPOC is then oxidized to CO in the reactor and measured by the CO detector as NPOC in the sample often referred to and reported erroneously as In Figure 2 2 a preferred method of performing a TOC True analysis is shown POC CO TIC TIC i gt CO Detector 2 gt Sample NPOC Oxidation To A Sparger Reactor Detector 1 Acid A Carrier Air or O TOC True TC TIC Figure 2 2 TOC True Method In this case acid 15 added to the sample lowering its pH to approximately 2 0 at which point the carbonates present in the sample are converted to dissolved In the sparger the carrier gas strips Teledyne Analytical Instruments 6 Total Organic Carbon Analyzer Theory of Operation 2
7. 18 Secure with four provided screws 19 Tighten with fingers only Figure 5 15 Pump Head Tubing Replacement 5 3 13 4 20 mA Adjustment Procedure 1 Select TEST from the Run Screen task bar then select SYSTEM DIAGNOSTICS 2 Locate Analog A cursor and position the cursor to MAX for a moment then return the cursor to MIN Teledyne Analytical Instruments 67 Maintenance Model 6750 Tmaapuqguaaapuipupiupiippupa Rl UNI 5 3 13 1 SETTING 100 MV CONTROL VOLTAGE 1 Using DC voltmeter connected to measure DC voltage connect the black lead to the side of capacitor Located near the lower left corner of the circuit board Connect the lead to the top of resistor R19 located slightly to the left of the center of the circuit board Note the mV reading typically no greater than 3 mV Next position the Analog A cursor to Max position Note the mV reading from the top of R19 Use pot R21 located slightly to the right of the center of the circuit board to adjust the mV reading 100 mV higher than minimum reading Reposition Analog A to Min and re check Min and Max mV readings 5 3 13 2 SETTING OF 4 20 MA OUTPUT 1 Using a digital voltmeter connected to read mA connect the black lead to 1 4 20mA out and the red lead to 1 4 20 mA out Adjust R41 for 4mA when Analog is at minimum Adjust R42 for 20mA when Analog A is at Maximum Repeat Analog Min Max un
8. 2H Figure 2 9 Oxidation Reactions Teledyne Analytical Instruments 16 Total Organic Carbon Analyzer Theory of Operation 222 rt 42 2 III III 2 4 4 NDIR Gas Detection The key component for reliable TOC analysis is the precise and interference free detection of The Model 6750 NDIR unit requires very little maintenance because of its ability to handle the corrosive gases generated in TOC analysis This is due in part to its non reflective borosilicate sample cell It has no moving parts which further reduces the maintenance load and it uses an internal self calibrating technique The NDIR unit is shown in Figure 2 10 Some of the features of the NDIR unit are as follows e Specific interference free detection Dual wavelength rationing compensates for drift Computer controlled for accuracy Sapphire protected optics Non corrosive non reflective sample cell borosilicate No moving parts or tools required for easy maintenance and service No critical realignment required IR Detector Sample Cell IR Source Figure 2 10 Model 6750 NDIR Unit The NDIR detector uses a completely solid state dual wavelength ratioing technique with a single borosilicate sample cell that Teledyne Analytical Instruments 17 Model 6750 cr m Is requires no wall reflectivity and is completely resistant to corrosi
9. CE computer 55 changeover time 34 CHART 41 chart recorder 1 12 18 detection 17 detector 6 7 9 COD BOD 77 combustible gas warning xii communication 23 computer 1 3 12 18 computer control 17 31 computer module 55 computer aided testing 43 conductivity detection 9 control panel 23 copyright il corrosion resistance 1 17 D I water 30 D I water flush 41 D DBPR option 35 D DBPR screen 36 data handling 69 DBPR drinking water 2 DBPR option 77 DC power supply 54 detector assembly 50 diagnostics 18 dimensions 22 display 69 dissolved 6 11 dissolved CO 6 door clearance 22 drain 14 70 drain connection 30 drain line 29 drift 18 dual NDIR analyzer 2 dual wavelength rationing 17 duration of analysis 34 electrical connection 23 Teledyne Analytical Instruments 81 Index Model 6750 enclosure 3 end bell 65 end to end method 36 EPA 9 exhaust connection 27 external pH calibration 35 fail safe 18 features 1 17 figures listing ix flow rate 13 29 70 Form C contact 25 fuse 44 gain See automatic gain control gas connection 26 gas liquid separator 12 14 general purpose area 5 21 hazardous aea option 21 hazardous area 5 HC 7 9 heater 15 historical data 18 41 INFRARED ANALYZER 45 infrared source 18 inlet pressure 70 inorganic carbon 14 inorganic carbon analysis 11 inorganic carbon remova
10. OPERATING INSTRUCTIONS FOR Model 6750 Total Organic Carbon Analyzer ECO mM Toxic gases and flammable liquids present this monitoring system Personal protective equipment may be required when servicing this instrument Hazardous voltages exist on certain components internally which may persist for a time even after the power is turned off and disconnected Only authorized personnel should conduct maintenance and or servicing Before conducting any maintenance or servicing consult with authorized supervisor manager Teledyne Analytical Instruments Model 6750 Copyright 2005 Teledyne Instruments 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 Instruments Analytical Instruments 16830 Chestnut Street City of Industry 91749 1580 Warranty This equipment is sold subject to the mutual agreement that it is warranted by us free from defects of material and of construction and that our liability shall be limited to replacing or repairing at our factory without charge except for transportation or at customer plant at our optio
11. Page V e Carrier Flow Rate Liquid Range Note The Liquid Range setting is that value to which the full scale output range is to be set not the value of the Liquid Span 4 2 3 Alarm Settings The next settings to verify or set are the Alarm Settings To adjust the alarm settings From the Edit Menu select Alarms The following Menu appears Teledyne Analytical Instruments 33 Setup Operation File Chart Edit Calibrate Help x IR OTemp OFlow 0 m 6365 Alarm 1 Alarm 2 po Astat Qs Fio 3 8 05 Model 6750 From this menu verify change the concentration alarm setpoints using the onscreen scroll arrows 4 2 4 Stream Sequencer If your analyzer has been configured for a multi stream sequencer P N ST200009 from the Edit Menu select Sequencer The following menu appears Stream Sequencer Lock disabled 1 ESO 15 minutes v OK disabled Changeover al minutes Stream 15 minutes w 4 rean 15 minutes Astat wv _ 2 9 11 53 9 From this menu you can Configure the duration of analysis for each stream how long it will analyze that stream before selecting the next stream Configure the changeover time to allow the prior stream to pass through sampling systems and clear the analyzer before analysis of the next steam begins Enable and disable each stream analysis for example to concentrat
12. Figure 5 10 Removing the UV Power Supply 5 3 9 Mass Flow Controller P N ST18001A If proper flow 15 not detected by the computer an alarm will activated and displayed The fault may be in the O Air supply check for 20 psi and flow of the supply by disconnecting the input If supply flow exists fault may be in the tubing Disconnect output side of mass flow controller and check for flow If no flow exists exchange mass flow controller as described below See Figure 5 11 If flow still does not exist check rest of tubing for restrictions leaks etc To remove the mass flow controller 1 Shut off Power to Instruments 2 Shut off all gas to analyzer and bleed system for O pressure Disconnect fittings tubing Loosen screws holding Module in place Remove Module irae Sak lo Recalibrate analyzer after re installation of exchange Module 4 Teledyne Analytical Instruments 59 Maintenance Model 6750 Tmaapuqguaaapuipupiupiippupa Rl UNI Figure 5 11 Mass Flow Controller 5 3 10 Metering Valve P N ST16050 If no O air flow to the sparger P N ST20025 is observed no bubbles check for tubing and fitting leaks restrictions and adjust metering val ve be careful to return to previous indicated bubble rate If flow cannot be restored replace the metering valve P N ST16050 according to the directions below See Figure 5 12 To replace the metering valve 1
13. ST100008 1 NDIR Source Assembly ST17007 NDIR O Ring ST20001 NDIR Sapphire Window ST20025 Sparger Teledyne Analytical Instruments 73 Model 6750 Part Description Image ST16050 Metering Value ST200026 IR Calibration Adapter ST20009 UV Process Lamp ST13066 1 AC Board Assembly Teledyne Analytical Instruments 74 Total Carbon Analyzer Appendix Part Description Image ST200003 1 UV Reactor Assembly ST15000 110V UV Power Supply ST15002 20V a ST18050 Flow Switch 1 y i ST20024T Gas Liquid Separator i Teledyne Analytical Instruments 75 Model 6750 Options 3 1 Option 200008 BENCHMARK with single point autocal This option automatically determines analyzer performance to specified limits It is accomplished by introducing a known chemical standard solution to the analyzer and performing a computation and analysis to verify its operation If Benchmark tests fall outside specified limits the operator may either manually perform an analyzer calibration or pre program the analyzer to perform a single point AUTO CAL with appropriate outputs relay or serial communication to alert control rooms of analyzer status The analyzer would then be automatically reset to fully calibrated operation Because the
14. for the 6 inch shorter IR bench use a gas calibration standard mixture of 1 in pure nitrogen For the longer 15 inch bench a gas mixture of 0 1 in pure nitrogen is required for Flow 200 cc minute of this cal gas for at least three minutes Allow NDIR reading to stabilize and then select SPAN NDIR reading is set to 10 000 Select OK to save or CANCEL to reject the calibration setting The NDIR unit has now been properly calibrated Reconnect the fitting to reactor output tube 5 3 2 NDIR Service To remove and service the NDIR simply follow the illustrated sequence as described in this section following Figure 5 4 4 Teledyne Analytical Instruments 47 Maintenance Model 6750 Tmaapuqguaaapuipupiupiippupa Rl UNI NDIR Unit Figure 5 4 Removing the NDIR Unit P N ST36000 To Replace the NDIR Unit Turn off power Remove inlet tube from NDIR Assembly Remove vent tube from NDIR Assembly Unplug interface cable from NDIR Assembly ME ober Da Remove NDIR Assembly from cabinet Teledyne Analytical Instruments 48 Total Organic Carbon Analyzer Maintenance i lil E Remove insulation from IR Cell Remove lock tight from three thumbnuts and remove Slide out and remove Source Assembly 4 Teledyne Analytical Instruments 49 Maintenance Model 6750 Remove Cell Assembly Note a O Rings in each of
15. 11 inorganic carbon standard 36 instrument air 13 intended use 3 interference 14 interference free 9 internal components 23 IR calibration adapter 45 IR cell assembly 50 IR response 32 IR source deterioration 18 IR span 47 IR zero 47 lamp 56 LAST 24 HOURS 42 LCD 69 linearity 69 liquid connections 25 liquid range 33 liquid sample 11 liquid waste 14 maintenance 43 Maintenance Request 19 manuals additional v mass flow controller 13 14 59 master control panel assembly 44 master fault alarm See alarm master fault master interface board 53 MAX 67 memory 32 metering valve 60 Microsoft Windows 18 MIN 67 MODBUS 25 mounting hole 21 multi stream analysis 2 multi stream sequencer 34 77 mV control voltage 68 NDIR 11 12 14 NDIR analysis 9 NDIR calibration 45 NDIR service 47 NDIR unit 17 48 NDIR vent 27 needle valve 14 noise 44 non purgeable organic carbon See NPOC normally closed 25 normally open 25 NPOC 1 5 7 9 14 operator controls 23 operator interface 12 optical bench 18 optical chopping 18 optics alarm 18 options 76 organic carbon standard 36 O ring 50 output adjustment 68 analog 1 69 connection 23 24 digital RS 232 2 oxidation 11 14 15 oxidation reaction 16 oxidation reactor 7 oxygen demand 13 oxygen generator 13 oxygen separation 13 oxygen supply pressure 29 paperless chart
16. Detector Assembly left and Source Assembly right b Sapphire windows located under O Rings Teledyne Analytical Instruments 50 Total Organic Carbon Analyzer Maintenance Remove and Sapphire window taking care to avoid scratching Sapphire window Recommend using toothpick Clean sapphire windows with a soft lintless tissue use DI water if necessary To Reassemble Install IR Cell Install Source Assembly end piece Note Large outlet port goes into Detector Assembly left 4 Teledyne Analytical Instruments 51 Maintenance Model 6750 Tighten three thumbnuts until ource Assembly bottoms out on squeeze nuts Recommend Use alternate tightening sequence Note IR Cell installed incorrectly Large outlet port MUST into Detector Assembly left Insertlock tight on three thumbnuts to prevent backoff e Install insulation Replace assembly as before Recalibrate NDIR Section 4 3 Teledyne Analytical Instruments 52 Total Organic Carbon Analyzer Maintenance i 5 3 3 Master Interface Board P N 5113042 1 The Master Interface Board has no field adjustment If malfunctioning replace the module P N ST13042 1 using the instructions below See Figure 5 5 Figure 5 5 Removing the Master Interface Board To Remove the PC Board 1 Turn off power 2 Remove plastic cover 3 Disconnect connectors 4 Remove p
17. Power Supply Remove Persulfate and Acid Reagent lines from containers as 4 Teledyne Analytical Instruments 57 Maintenance Model 6750 Tmaapuqguaaapuipupiupiippupa Rl UNI well as the sample inlet line submerse all three 3 lines into D 1 water to completely flush system CAUTION FAILURE TO DO SO MAY RESULT IN ACID BURNS CLOGGED REACTOR ETC FLUSH FOR 30 MINUTES Turn off power Disconnect electrical connectors 2 3 4 Disconnect tubing 5 Remove thumbnuts holding UV Reactor in place 6 Remove UV Lamp See Figure 5 9 To clean the UV Reactor Assembly 1 Run warm water through all tubing until clean 2 Replace assembly as before 3 Charge reactor with D I water 4 Recalibrate analyzer 5 3 8 UV Power Supply The UV Power Supply P N ST15002 for 110 VAC or P N ST15000 for 220VAC is normally checked with another good UV lamp If it activates the UV lamp the UV Power Supply is good If the Power Supply is not good replace the Module P N ST15002 for 110 VAC or P N ST15000 for 220 VAC See Figure 5 10 To replace the UV Power Supply 1 Turn power off Disconnect UV and main power connectors Remove power supply mounting screws Replace power supply Reverse steps for installation Qu ems ROIO Recalibrate liquid and span value Teledyne Analytical Instruments 58 Total Organic Carbon Analyzer Maintenance i FOLTA a e z 8 2 z
18. analyzer or performing service on the reactor flush D I water through all sample and reagent lines for at least 30 minutes to clean all tubing CAUTION FAILURE OBSERVE ADEQUATE FLUSHING COULD RESULT IN HARMFUL ACID BURNS AND OR A REACTOR CLOG 4 6 Historical Data Previous data may be obtained by selecting CHART from the screen The following menu will appear File Edit Calibrate Test Help X TOC Scale 0 m 6451 Last 24 Hours Historical Data 0 _ mg L Asor gs 8 9 11 92 AM The display scale can be adjusted using the Select SCALE item from the CHART menu The following screen will appear Chart Scale Aster JS 2 9 11 33 AM A Scale as desired Teledyne Analytical Instruments 41 Setup Operation Model 6750 PECIA 22 2 view the data produced the last 24 hours select LAST 24 HOURS The following screen will appear File Chart Edit Caltwate Test Help x Using the Scroll Bar select the data to be viewed Selecting HISTORICAL DATA allows you to view any archived data within the memory limits of the computer A screen appears which will allow you to select the archived time period desired How far back you can go depends on the available memory Teledyne Analytical Instruments 42 Total Organic Carbon Analyzer Maintenance 22 2 222 27 X 224 422 SEE Maintenance 5 1 Compupter aided Testing Prior
19. are made to the instrument 3 3 2 Analog Outputs There are two analog output signal connections There are two wires per output with the polarity noted See As Built Drawings in the Appendix The outputs are non isolated 4 20 mA PRIMARY SIGNAL POWER OUTPUTS Figure 3 4 Electrical Connections to the Model 6750 Teledyne Analytical Instruments 24 Total Organic Carbon Analyzer Installation eee 3 3 3 Alarm Connections The Model 6750 is equipped with two concentration alarms and one analyzer malfunction alarm The three alarm circuit connectors use spring terminals for making connections to internal alarm relay connects Each alarm provides a set of Form C contact with both normally open and normally closed contact connections The contact connections are indicated by diagrams on the rear panel They are capable of switching up to 3 amperes at 250 VAC into a resistive load See As Built Drawings in the Appendix The connections are Threshold Alarms Can be configured as high actuates when concentration is above setpoint or low actuates when concentration is below threshold Can be configured as failsafe or non failsafe be configured as latching or non latching Malfunction Alarm 3 3 4 RS 232 Serial Connection An RS 232 port is provided for serial communication MODBUS Connect a standard RS 232 cable from the computer to the RS 232 port on the main board 3 4 Gas liquid
20. automatic by selection of day time the combination of valves V3 and V4 divert the sample and introduce a liquid calibration solution to the analyzer This is the same calibration solution used to previously calibrate the analyzer end to end If the TOC value from the calibration solution falls within a limit generally set at 5 of the previous calibration then Benchmark Passed will be displayed and remotely reported If the TOC Benchmark solution falls outside the set tolerance then a Benchmark Failed message and a Maintenance Request are reported 2 4 5 2 AUTO CALIBRATION On command manual or automatic by selection of day time the combination of valves V3 and V4 alternately introduce D I water for a Zero calibration and the Span solution The computer then resets the analyzer to the new calibration values 2 4 5 3 AUTO CLEANING On command manual or automatic by selection of day time the combination of valves V3 and V4 operate to introduce a cleaning solution depending on the chemical constituents of the sample Acid or persulfate is generally used Teledyne Analytical Instruments 19 Theory of Operation Teledyne Analytical Instruments Model 6750 20 Total Organic Carbon Analyzer Installation pu KE CCP QAM 422 22 Installation This manual contains 5 BUILT drawings and a parts list to aid in the installation and operation of the analyzer Th
21. enters those factors into the analyzer computer Thereafter all three parameters TOC COD BOD are continuously displayed Updates to these correlations may be made at any time Consult the factory for particular user applications Teledyne Analytical Instruments 78 Total Carbon Analyzer A 4 AS BUILT Drawings Teledyne Analytical Instruments Appendix 79 Teledyne Analytical Instruments Model 6750 80 Total Carbon Analyzer Index accuracy 12 39 acid 6 9 11 14 19 ACID IN port 30 acid preparation 38 air 70 alr gap 29 air purifier 13 air supply pressure 29 alarm 1 18 19 concentration 25 69 failsafe 25 high 25 latching 25 low 25 master fault 1 25 69 setpoint 34 settings 33 analog output See output analog analysis method limitations 5 analysis mode 31 applications 2 archive time period 42 auto cal auto clean option 76 auto cal option 76 auto cal auto clean 2 auto calibration 18 19 auto cleaning 18 19 automatic control 1 automatic gain control 18 automatic multi range 2 Benchmark 76 Benchmark Passed 19 Benchmark auto validation 2 Benchmark auto validation 18 19 BOD COD 2 CALIBRATE 39 45 calibration 36 70 calibration solution 19 calibration standard 19 carbonate 6 carrier gas 6 9 11 13 27 carrier gas connection 27 Index carrier gas flow rate 14 16 32 33 caution sign iv
22. measurement Teledyne Analytical Instruments Model 6750 Carbon Definitions Total carbon Total Total Carbon TOC Total Inorganic Carbon TIC CO2 H2CO3 HCO3 CO3 2 Total Organic Carbon TOC thousands of simple and complex biological and man made compounds Basic TOC measurement methods DIFFERENCE METHOD Measure TIC gt oxidize gt measure TC gt CALCULATE as TOC TC TIC Method prone to large errors due to the small differences in large numbers problem particularly for high TIC DIRECT METHOD NPOC Remove TIC gt oxidize gt MEASURE DIRECTLY Example Assumed instrument error 3 Difference Method 2 000 60 ppb 1 500 45 ppb 500 105 ppb Direct Method NPOC TOC 500 15 ppb Figure 2 3 TOC Measurement Basics Model 6750 UV Heated Persulfate Method Influent water containing TIC 4 species Lower to lt 4 0 to convert TIC to TIC TOC H CO aq TOC Remove CO2 aq from TIC and saturate with o CO aq o g TOC CO g TOC o aq Legend Sparger TC Total Carbon TIC TOC Acidification TIC Total Inorganic Carbon Oxidize TOC to CO with 2 Ultraviolet light at 185 amp 254 nm TOC Total O
23. multiple calibration curves 115 10 VAC 50 60 Hz 7A Service Recommended 220 10 VAC 50 60 Hz optional 4 A Service Recommended Clean dry oil free CO free instrument air at 15 psi 2 psi consumption lt 500 cc minute Teledyne Analytical Instruments 70 Total Organic Carbon Analyzer Appendix A 2 Parts Listing Part Description Image ST16002 7013 Pump Head ST16003 7014 Pump Head ST16004 7015 Pump Head ST16004 7016 Pump Head ST16005 7017 Pump Head ST16006 7018 Pump Head ST18002 1 2 RPM 110V Pump Motor Assembly ST18003 1 2 RPM 220V ST16007 13 Tygon Tubing ST16008 14 Tygon Tubing ST16009 15 Tygon Tubing ST16010 16 Tygon Tubing ST16011 17 Tygon Tubing ST16012 18 Tygon Tubing ST18001A Mass Flow Controller Teledyne Analytical Instruments 71 Model 6750 Part Description Image ST15083 12V DC Power Supply ST13069 1 Distribution Board ST13070 1 Interface Board ST13039 CE Computer o ST100001 6 6 NDIR Assembly gt ST100001 15 15 NDIR Assembly gt Teledyne Analytical Instruments 72 Total Organic Carbon Analyzer Appendix Part Description Image ST100006 1 NDIR Detector Assembly ST100009 6 6 NDIR Cell Assembly ST100009 15
24. recorder See chart recorder Teledyne Analytical Instruments 82 Total Organic Carbon Analyzer parameters menu 32 parts listing 71 persulfate 15 16 19 persulfate line 30 pH 6 11 14 phosphoric acid 38 5 7 potassium hydrogen phthalate 36 power connection 23 power requirement 70 power supply 23 preferred method of analysis 6 pressure swing absorption 13 pump 11 63 pump head 44 63 pump mounting screw 65 pump tubing 66 purgeable organic carbon See POC range 69 range change 77 reactor body 15 reagent 11 70 reagent preparation 37 reference detector 18 relay 25 repeatability 69 response time 69 rotor 65 RS 232 2 18 25 69 run mode 30 RUN screen 40 RUN Screen 31 safety information iv sample cell 17 sample connection 26 sample system 11 12 sample temperature 16 sapphire 18 sapphire optics 17 sapphire window 51 scale 41 serial communication 25 serial number iii setup 29 shutdown 41 signal detection 18 signal processing 11 sodium carbonate 36 sodium persulfate 37 Index SPAN 39 47 span fluid 39 span solution 19 sparger 6 9 11 14 16 61 sparger cleaning 62 sparger flow rate 14 sparger replacement 62 specifications 69 stability 69 standard solution 36 subsystem 11 suspended solids 70 synchronous 18 system checklist 27 SYSTEM DIAGNOSTICS 43 67 tables listing xi TC 1 5 6
25. suggested for your application Instrument calibration is performed by an end to end method whereby a known organic carbon chemical standard solution is introduced to the analyzer and the analyzer is spanned to that value e Organic and Inorganic Carbon Standards Potassium Hydrogen Phthalate is recommended for the organic carbon standard solution Sodium Carbonate is recommended for the inorganic carbon standard Table 4 1 provides the concentration to be used for two ranges of different chemical compounds organic amp inorganic carbon Ratioing of these concentrations will provide other ranges for the span solution Teledyne Analytical Instruments 36 Total Organic Carbon Analyzer Table 4 1 Preparation of Standards TOC TIC Setup and Operation ORGANIC COMPOUNDS 100 mg Liter TOC AS CARBON 1000 mg Liter TOC AS CARBON Ethylene Glycol 233 ml L H20 2 33 ml L H20 Methanol 337 ml L H20 3 37 H20 Ethanol 242 ml L H20 2 42 ml L H20 Acetone 204 ml L 2 04 ml L H20 Carbon Tetrachloride 807 H20 8 07 ml L H20 Sucrose 238 gm L H20 2 38 gm L H20 Urea 500 gm L 20 5 00 gm L H20 Acetic Acid 250 gm L H20 2 50 gm L H20 KHP Potassium acid phthalate 212 gm L H 0 2 12 gm L H20 Glycine 313 gm L H20 3 13 gm L 0 Sodium Stearate 141 gm L H 0 1 41 gm L H 0 Succinic Acid 246 gm L H 0 2 46 gm L H
26. the analyzer in two phases liquid and gaseous 2 4 1 1 LIQUID PHASE SAMPLE HANDLING Referencing Figures 2 6 and 2 7 the sample is introduced to the analyzer with a self priming peristaltic pump P 4 It is then initially directed to the Inorganic Carbon IC Sparger where it is mixed with acid delivered by pump P 2 The pH of the solution is lowered to approximately 2 converting the inorganic carbon to CO which is sparged out by the carrier gas and measured as Total Inorganic Carbon TIC by an infrared analyzer NDIR 2 in the TOC True mode The TOC True mode is the preferred method of use if volatile hydrocarbons are present which would otherwise be lost in the sparging process Thus through subsequent analysis of Total Carbon TC and Teledyne Analytical Instruments 11 Model 6750 cr m Is actual measurement of the TIC a more accurate TOC is achieved since TOC TC TOC Direct mode is preferred for accuracy when no or little volatiles are present In this mode the carbonate free sample is extracted from the organic carbon reactor and measured directly as TOC Pump P 1 continuously introduces the carbonate free sample to the reactor No valves or complicated injection mechanisms are required The remaining organic carbon is oxidized to in the reactor The resultant gaseous stream 15 directed to a gas liquid separator and then to the NDIR The C
27. to performing detailed troubleshooting procedures listed below first perform computer aided testing of the analyzer as follows 1 From the screen select TEST The following menu appears File Chart Edit Calibrate Flow Dm System Diagnostics 2 Select SYSTEM DIAGNOSTICS The following menu appears File Chart Edit Calibrate Test Help Flow Om 6443 niSystem Diagnostics m Benchmark Valve ZerojSpan Valve Pumpa 118 Cal valves Alarm 1 Alame Alam 3 Flow AnalogA 8 Teledyne Analytical Instruments 43 Maintenance Model 6750 From this screen the operator may perform individual testing of components related to functionality and settings 5 2 Troubleshooting If you are experiencing trouble with your instrument refer to Table 5 1 Troubleshooting Table 5 1 Troubleshooting PROBLEMS Analyzer will not turn on Analyzer does not Calibrate is sluggish Analyzer is excessively noisy Display not functioning Pump head not rotating Pump head rotating but not pumping fluid SOLUTION Check fuse amp power connections Look for loose or damaged wiring Check for 12V DC from power supply Check power supply fuse Look for amp correct any liquid or gas line leaks Check for leaks at tubing connections Check cable connections Check power supply voltage Suspect Malfunctioning Computer P N ST13039 Master Control Panel Assembly P N ST13042 1 Refer
28. 20 Sodium Oxalate 555 gm L H20 5 55 gm L H 0 INORGANIC COMPOUNDS 50 mg Liter TIC AS CARBON Sodium Carbonate 442 gm L H 0 Potassium Carbonate 575 gm L H20 Ammonium Carbonate 475 gm L H20 Add amounts shown in milliliters or grams to clean dry one liter volumetric flask and dilute to one 1 liter with distilled deionized water 4 Reagent Preparation PREPARATION OF ONE MOLAR SODIUM PERSULFATE SOLUTION OXIDIZING REAGENT Teledyne Analytical Instruments 37 Setup Operation Model 6750 CAUTION N CAUTION N 6 Teledyne Analytical Instruments SODIUM PERSULFATE IS A STRONG OXIDIZING AGENT TAKE ALL NECESSARY PRECAUTIONS AS WITH HANDLING ANY CORROSIVE MATERIAL ALL CHEMICALS INCLUDING WATER SHOULD BE REAGENT GRADE OR BETTER AND FREE OF CARBON CONTAINING COMPOUNDS THE CONTAINER USED SHOULD BE FLUSHED WITH DISTILLED OR DEIONIZED DI WATER a Dissolve 238 grams of ultra pure reagent grade sodium persulfate P N ST40000 into one 1 liter of distilled water b Do not heat reagent to dissolve as this is not necessary and can reduce the effectiveness of the solution It should be noted that some reagent grade sodium persulfate is not really pure persulfate supplied by Teledyne is guaranteed to have sufficient purity for proper operation Acid Preparation P
29. 22 rt 42 2 III III sparges the converted from the it is measured independent CO detector as POC is also stripped from the sample in the sparger as HC but the HC is undetected by the CO detector and does not interfere with the TIC measurement A portion of the same sample is also directed to the oxidation reactor where inorganic and all organic carbon is converted to and detected by a second detector as Total Carbon A mathematical subtraction of the TIC from the TC measurement yields a complete Total Organic Carbon analysis performed as TOC True method TOC True TC TIC The difference between the Model 6750 s TOC True Method and other simple TC TIC subtraction methods is that most other simple TC TIC subtraction methods only deal with a TC measurement then a separate TIC measurement and a simple mathematical difference to derive a TOC analysis In the TOC True method used by the Model 6750 the analyzer actually performs both TC and TIC measurements simultaneously and continuously on the same sample The TOC Measurement Basics and Methods are illustrated in Figures 2 3 and 2 4 In conclusion 1 NPOC is the preferred method if no POC VOC is present in the sample 2 TOC True is the preferred method if POC VOC exists in the sample and a TOC analysis is desired which includes all organic carbon species for a TOTAL Organic Carbon
30. 31 31 32 33 34 35 36 40 41 41 43 43 44 45 45 47 53 54 55 56 57 vii Model 6750 5 3 8 UV Power Supply 5 3 9 Mass Flow Controller P N ST18001A 5 3 10 Metering Valve P N ST16050 5 3 11 Sparger P N ST20025 5 3 12 Pumps 5 3 12 1 Pump Motor Replacement 5 3 12 2 Pump Head Tubing Replacement 5 3 13 4 20 mA Adjustment Procedure 5 3 13 1 Setting 100 mV Control Voltage 5 3 13 2 Setting of 4 20 mA output leale A 1Specifications A 2 Parts Listing A 3 Options A 3 1 Option 200008 A 3 2 Option 200009 A 3 3 Option 200010 A 3 4 Option 200016 A 3 5 Option 200017 A 3 6 Option 200009 A 3 7 Option 400008 A 3 8 Option 200026 A 4 AS BUILT Drawings Teledyne Analytical Instruments 58 59 60 61 63 63 65 67 68 68 69 69 71 76 76 76 76 77 77 77 77 77 79 viii Total Organic Carbon Analyzer List of Figures Figure 1 1 The Model 6750 TOC Analyzer Front door removed 3 Figure 2 1 NPOC or TOC Direct Method 6 Figure 2 2 TOC True Method i 6 Figure 2 3 TOC Measurement 8 Figure 2 4 UV Persulfate 8 Figure 2 5 Comparison of TOC Measurement Technologies 10 Figure 2 6 Sample Handling for TOC Direct 12 Figure 2 7 Sample Handling
31. 9 TC TIC subtraction methods 7 technician symbol iv temperature 69 temperature sensor 15 TEST 43 67 TIC 5 7 9 11 TIC pH relationship 15 TOC 12 69 TOC analysis 5 TOC Analyzer 3 TOC measurememt basics 7 TOC measurement comparison 10 TOC SCALE 41 TOC True 6 TOC value 32 TOC Direct 6 9 12 1 7 9 11 14 total carbon See TC total inorganic carbon See TIC touch screen 12 troubleshooting 44 tubing leak 44 tubing leaks 60 universal power supply See power supply tube 30 V lamp 15 V lamp replacement 56 V power supply 58 V reactor 9 15 16 V reactor assembly 57 V reactor cleaning 58 CL GG c Teledyne Analytical Instruments 83 Index Model 6750 UV Heated Persulfate Oxidation Method 1 5 See valve 19 view window 3 VOC 5 7 volatile hydrocarbon 11 volatile organic carbon See VOC volatile organic loss 9 14 volatile organics 1 voltmeter 68 wall mounting 21 warning sign iv warranty 11 water vapor interference 18 website address v Windows CE computer worn tubing 63 ZERO 39 47 zero fluid 19 39 Teledyne Analytical Instruments 84
32. Connections Refer to the As Built Drawings in the Appendix for details and Figure 3 5 The Model 6750 Analyzer provides easy access for liquid gas vent and drain connections 3 4 1 Liquid Connections Liquid phase sample connections include the following See Figure 3 5 Sample On Line D I Dilution Water Calibration Standard Teledyne Analytical Instruments 25 Installation Model 6750 E a e a e Reagents Drain s Connect these lines as per Figure 3 4 and the AS BUILT drawings in the Appendix Make sure there are no restrictions or kinks in the sample lines FRONT VIEW WINDOWS CE COMPUTER UV Zil REACTOR NDIR VENT c PERISTALTIC PUMPS CARRIER GAS BENCHMARK AUTOCAL BOTTOM VIEW VALVE GAS LIQUID _ ACID SEPARATOR DRAIN PERSULFATE E SAMPLE UV REACTOR SPAN Figure 3 5 Gas and Liquid Connections to the Analyzer 3 4 2 Gas Connections The gas connections include Sample Gas Carrier Gas Vent Calibration Gases zero and span Teledyne Analytical Instruments 26 Total Organic Carbon Analyzer Installation eee With the exception of the vent and carrier gas inlet all other gas connections are made on the same bottom panel as the liquid connections and are shown in Figure 3 5 The NDIR vent and carrier gas connections are made on the left side of the unit Gas Carrier Connections The facilit
33. IC and pH 2 4 3 Oxidation The UV reactor and persulfate reagent provide oxidation of the carbon to The UV reactor consists of the following Mounting enclosure with viewing window Borosilicate reactor body Heater Temperature sensor UV Lamp Miscellaneous fittings and clamps Teledyne Analytical Instruments 15 Model 6750 cr m Is The construction of the patented UV reactor in the Model 6750 affords superior oxidation by precisely controlling the sample temperature adding a precise amount of ultra pure persulfate reagent P N ST40000 and precisely controlling the carrier gas flow rate Pump P 1 continuously meters a precise amount of carbonate free sample from the sparger to the UV reactor Pump P 3 continuously meters a precise amount of persulfate reagent to the reactor Mass Flow Controller MFC 1 precisely controls the carrier flow rate Refer to Figures 2 6 and 2 7 Figure 5 10 shows UV oxidation methodology UV Oxidation Generation of oxidant by UV energy 185 nm 2H 0 H2O 2H lt 4 OH Hydrocarbon oxidation 4x y OH 2x y H20 Excess O is decomposed by absorption of 254 nm UV energy 254 nm 2 H20 2H O 2H gt 4 OH The overall reaction C Hy 4x 4 y 2 H20 Oxidant is produced as 185 nm 254 nm x 2 O H2O O
34. O gas is analyzed by the infrared analyzer NDIR as a direct correlation of Total Organic Carbon TOC A computer controls all functions and outputs A Touch Screen provides operator interface and a paperless chart recorder utility ale PRINTER OUTPUT COMMUNICATIONS CONTACT CONTACT NDIR 1 DATA PROCESSING m DISPLAY Figure 2 6 Sample Handling for TOC Direct Teledyne Analytical Instruments 12 Total Organic Carbon Analyzer Theory of Operation lacci q diltoilinc_ tt PRINTER OUTPUT COMMUNICATION PLAY PAPERLESS Figure 2 7 Sample Handling TOC True 2 4 2 2 GAS PHASE SAMPLE HANDLING Referencing Figure 3 5 and As Built drawings in the Appendix a carrier gas of 99 8 pure oxygen or and hydrocarbon free air is required Erroneous TOC analysis will occur if the carrier gas has these impurities since both CO and Hydrocarbon gases will contribute a higher TOC value to the analysis than is actually present in the sample An Oxygen Generator P N ST200025 is available from Teledyne that separates oxygen from the ambient air It is a pressure swing absorption PSA device requiring only electricity only to operate Also available from Teledyne is an Instrument Air Purifier P N ST200019 This device can supply the oxygen demands of the instrument using facility instrument air Facility carrier gas is introduced to the analyzer regulated at 15 2 psi and then controll
35. TION This option is configured to fully comply with the Disinfection Byproducts Rule as defined by the USEPA The analyzer is configured for a two stream sequencer and displays source TOC distribution TOC out of tolerance alarms alkalinity input and pH input A 3 8 Option 200026 COD BOD CORRELATIONS Both COD and BOD readouts are correlated to instantaneous TOC analyses Thus the operator is provided with useful predictive real time analogs derived from the actual organics in the sample While TOC provides the most specific measurement for process control for organic loading treatment spill detection etc COD and BOD continue to provide useful data which is often required for permits Regulatory agencies will often allow substitution of TOC analysis for COD and BOD if proper correlation is performed The correlation requires multiple testing for COD and or BOD on the same sample taken at the same time of TOC analysis and recording those results when available later This may take one sample per day for 30 days After sample characterization COD and BOD readouts may then be used as instantaneous control parameters Teledyne Analytical Instruments 77 Model 6750 Since COD amp analysis may vary with seasonal influences or other particular conditions correlations for those conditions would be used at those times After obtaining a representative amount of TOC COD BOD data the operator
36. V Lamp P N ST20009 Normal lamp replacement frequency is suggested at least every 12 months however if a lamp is burned out weak or no blue glow replace with UV Lamp P N ST20009 per directions in Figure 8 Figure 5 8 UV Lamp Replacement To replace the UV lamp 1 Turn off the UV lamp at the UV power supply Remove persulfate and acid reagent lines from containers as well as the sample inlet line and submerse all three 3 lines into D I water to completely flush system CAUTION FAILURE TO DO SO MAY RESULT IN ACID BURNS CLOGGED REACTOR FLUSH FOR 30 MINUTES gt CAUTION USE ONLY P N ST20009 UV LAMP TO ASSURE PROPER 185 MM AND 254 MM POWER SPECTRAL DENSITY AND PROPER OXIDATION EFFICIENCY Teledyne Analytical Instruments 56 Total Carbon Analyzer Maintenance M X CAUTION THE UV LIGHTED LENGTH MUST BE AT LEAST 12 INCHES FOR PROPER OPERATION DO NOT USE N STANDARD 12 INCH LIGHTED LENGTH UV LAMPS Turn off power allow 10 minutes for cool down Disconnect electrical connectors Loosen fittings as illustrated Remove UV Lamp Qu e Recalibrate analyzer 5 3 7 UV Reactor Assembly P N ST20003 1 If malfunctioning clean the assembly If still malfunctioning replace the assembly P N ST20003 1 See Figure 5 9 Figure 5 9 Removing the UV Reactor Assembly To Replace the UV Reactor Assembly 1 Turn off UV Lamp at the UV
37. alytical Instruments iv Total Carbon Analyzer IF YOU USE THE ANALYZER IN A MANNER OTHER THAN THAT FOR WHICH IT WAS INTENDED UNPREDICTABLE BEHAVIOR COULD RESULT POSSIBLY ACCOMPANIED WITH HAZARDOUS CONSEQUENCES This manual provides information designed to guide you through the installation calibration operation and maintenance of your new analyzer Please read this manual and keep it available Occasionally some instruments are customized for a particular application or features and or options added per customer requests Please check the front of this manual for any additional information the form of an Addendum which discusses specific information procedures cautions and warnings that may be peculiar to your instrument Manuals do get lost Additional manuals can be obtained from TI AI at the address given in the Appendix Some of our manuals are available in electronic form via the internet Please visit our website at www teledyne ai com Teledyne Analytical Instruments Model 6750 Table of Contents u u Su A i List Of Tables iui INITOAUCHON recai 1 1 Main Features of the Analyzer 1 2 Options 1 3 Typical Applications 1 4 Intended Use of the Analyzer 1 5 Operator Interface Theory of Operation Luini 2 1 Overview 2 2 Background 2 3 The UV Heated Persulfate Method of Analysis 2 4 Subsystems Principles of Operation 2 4 1 Sample H
38. analyzer is equipped with BENCHMARK the time for the subsequent auto cal if required is significantly reduced as the BENCHMARK standard would become the SPAN solution and the computer controlled analyzer reset to a fully calibrated condition This feature may be scheduled to be performed automatically by the operator valving is included A 3 2 Option 200009 AUTO CAL AUTO CAL isa feature to automatically 2 point calibrate the analyzer with known chemical standards The operator may program its schedule and during its operation appropriate outputs relay or serial communications are available to alert control rooms of analyzer status valving is included A 3 3 Option 200010 AUTO CAL AUTO CLEAN AUTO CAL AUTO CLEAN is a feature to automatically 2 point calibrate the analyzer with known chemical standards and or introduce a cleaning agent generally acid or persulfate to clean analyzer internal fluid lines All valving is included Teledyne Analytical Instruments 76 Total Organic Carbon Analyzer Appendix les scs ri A 3 4 Option 200016 EXTERNAL RANGE CHANGE This option provides for local or remote analyzer range change by contact closure A 3 5 Option 200017 TRUE DUAL RANGE OPTION not an electronic scaling A 3 6 Option 200009 MULTI STREAM SEQUENCER This option allows time sequencing of analysis of up to Four 4 different streams A 3 7 Option 400008 DBPR OP
39. andling 2 4 1 1 Liquid Phase Sample Handling 2 4 2 2 Gas Phase Sample Handling 2 4 2 Inorganic Carbon Removal Analysis 2 4 3 Oxidation 2 4 4 NDIR Gas Detection 2 4 5 Electronic Signal Processing Display and Control 2 4 5 1 Benchmark Auto Validation 2 4 5 2 Auto Calibration 2 4 5 3 Auto Cleaning Installation Gra 3 1 Unpacking the Analyzer 3 2 Mounting the Analyzer Teledyne Analytical Instruments vi Total Organic Carbon Analyzer 3 3 Electrical Connections 3 3 1 Power Connection 3 3 2 Analog Outputs 3 3 3 Alarm Connections 3 3 4 RS 232 Serial Connection 3 4 Gas liquid Connections 3 4 1 Liquid Connections 3 4 2 Gas Connections 3 5 Checking the System Setup and Operation 4 1 Analyzer Startup 4 2 Menus 4 2 1 Run Mode 4 2 2 Parameter Menu 4 2 3 Alarm Settings 4 2 4 Stream Sequencer 4 2 5 D DBPR 4 3 Detailed Calibration Procedures 4 4 Operation 4 5 Shutdown 4 6 Historical Data Maintenance 5 1 Compupter aided Testing 5 2 Troubleshooting 5 3 Module Service 5 3 1 NDIR Gas Calibration 5 3 2 NDIR Service 5 3 3 Master Interface Board P N ST13042 1 5 3 4 D C Power Supply 5 3 5 CE Computer P N 13039 5 3 6 UV Lamp P N ST20009 5 3 7 UV Reactor Assembly P N ST20003 1 Teledyne Analytical Instruments 23 23 24 25 25 25 25 26 27 29 29
40. anel Note Depending on the configuration there may be one or two master interface boards 4 Teledyne Analytical Instruments 53 Maintenance Model 6750 5 3 4 D C Power Supply The power supply has no field adjustment If malfunctioning replace the module P N ST15083 using the directions below See Figure 5 6 Figure 5 6 DC Power Supply Module To replace the module 1 Turn off power Remove plastic cover Disconnect connectors Remove nuts holding Power Supply Remove Power Supply Module Replace Power Supply Module Reverse steps for Installation OO ek de ee en Refer to Installation Drawings for proper connector assembly 9 Recalibrate liquid and span values Teledyne Analytical Instruments 54 Total Carbon Analyzer Maintenance i 5 3 5 CE Computer P N 13039 If malfunctioning replace the Computer Module using the directions below See Figure 5 7 Figure 5 7 Replacing CE Computer To Replace the CE Computer 1 Turn off power 2 Disconnect electrical connectors 3 Remove screws holding Module in place 4 Remove module 5 Install new CE Computer in reverse disassembly instruction procedure steps Install electrical connectors per supplied drawing 6 Verify proper software install per directions shipped with new CE Computer 7 Recalibrate liquid zero and span values 4 Teledyne Analytical Instruments 55 Maintenance Model 6750 5 3 6 U
41. e Pump Note Actual mounting panel may appear somewhat different but mounting hardware is the same 5 3 12 2 PUMP HEAD TUBING REPLACEMENT 1 Separate the end bells the pump head halves 2 Holdthe end bell containing the rotor as shown with the tubing retainer grooves pointing down Teledyne Analytical Instruments 65 Maintenance Model 6750 Tawapa wauu ra 3 Place tubing in the right groove and against the first two rollers 4 Hold tubing with thumb 5 Near groove insert smaller prong of loading key between the top of the rotor and tubing 6 Push key in as far as possible 7 Push down and turn key counterclockwise ccw completely around the rotor 8 The key will push the tubing uniformly into the end bell assembly 9 Hold the second end of tubing 10 Remove the key Teledyne Analytical Instruments 66 Total Organic Carbon Analyzer Maintenance le 22 2 CA to 22 54 4222 1 2 cl 11 Position the other end bell on top and press the end bells together 12 Be careful not to pinch the tubing 13 If end bells do not snap tightly together reload tubing 14 If necessary turn key in slot on rotor shaft to adjust tubing as in next step E 15 With key in slot rotor shaft turn key to align tang on rotor shaft with slot in motor drive shaft 16 Point tubing retainer grooves up 17 Shift the pump head slightly until it snaps on the alignment pins if present
42. e control panel which is hinged and doubles as the door that provides access to those components not normally requiring maintenance Internal components of the Model 6750 TOC Analyzer are shown in Figure 3 3 WINDOWS CE COMPUTER Uv REACTOR PERISTALTIC PUIVPS Figure 3 3 Internal Components of the Model 6750 Analyzer 3 3 Electrical Connections Figure 3 4 shows the analyzer electrical electronics connections for power communication and both digital and analog concentration outputs See also the AS BUILT drawing package included in the Appendix 3 3 1 Power Connection The universal power supply requires an 85 250 VAC 47 63 Hz power source For safe connections ensure that no uninsulated wire extends outside the connectors they are attached to Stripped wire ends must insert completely into terminal blocks No uninsulated wiring should be able to come in contact with fingers tools or clothing during normal operation Electrical Electronics hookups include the following 4 Teledyne Analytical Instruments 23 Installation Model 6750 Power ConnectionUniversal AC Power Source Primary Input Power CAUTION POWER IS APPLIED TO THE INSTRUMENT S CIRCUITRY AS LONG AS THE INSTRUMENT IS CONNECTED TO THE FACILITY POWER SOURCE THE FACILITY MUST HAVE AN EXTERNAL POWER SWITCH TO REMOVE PRIMARY POWER FROM THE ANALYZER Analog Output Connections Alarm Connections Figure 3 4 shows where the electrical connections
43. e on only one stream The following window is illustrative of a dual stream Run screen Teledyne Analytical Instruments 34 Total Organic Carbon Analyzer Setup and Operation 2 2 2 ZZZ File Chart Edit Calibrate Test Help IR OFlow 0 memory 6963 Stream 1 0 0 22 9 11 51 4 2 5 D DBPR This optional utility allows convenient external calibration input of alkalinity data consistent with the D DBPR requirements If your analyzer has been configured for the D DBPR option from the following Edit Menu select D DBPR File Chart Calibrate Test Help x Parameters Alarms Benchmark Scheduling Autocal Scheduling Stream Sequencer D DBPR Option start Po 3 11 55 AM following screen appears File Chart Edit Calibrate Test Help pH 0 0 Flow 0 m 6365 D DBPR Option OK pH Calibration High cal H 0 1 OE fU B Ro 3 11 56 AM Reduction Factor Teledyne Analytical Instruments 35 Setup Operation Model 6750 PECIA 22 2 The following window is illustrative of the D DBPR Run screen File Chart Edit Calibrate Test Help Astr 2 9 11 55 4 3 Detailed Calibration Procedures 1 Although the instrument has been calibrated to your specifications at the factory it should be rechecked after satisfactory installation and periodically calibrated as
44. ed by an internal mass flow controller MFC 1 to precisely control the flow rate of the carrier Note Precise carrier gas flow control is mandatory for accurate Teledyne Analytical Instruments 13 Model 6750 cr m Is TOC analysis in a continuous on line TOC analyzer The CO generated by the oxidation of carbon in the reactor is read by the NDIR as a percentage concentration of the CO in the carrier gas TOO Carrier Any increase or decrease of the carrier flow rate will have a corresponding inverse effect on TOC reported value eg double the carrier flow rate reported will approximate of actual sample TOC concentration The Model 6750 uses a computer controlled mass flow controller rather than a less accurate system consisting of pressure regulation with a flow meter in a capillary system The inorganic carbon removal system sparger flow rate is controlled by needle valves V1 amp 2 set at the factory The operator will note bubbles through the liquids in the sparger which is stripping the CO converted from the carbonates to eliminate the potential interference from inorganic carbon in analysis The carrier gas directs the and other products of oxidation from the reactor to the Gas Liquid Separator GLS where liquid waste 15 directed to drain and gases containing and other gaseous products of oxidation are di
45. ese drawings should be referred to when ordering spare parts operating or servicing the equipment See the Appendix for the AS BUILT drawing package Installation of the Model 6750 On line UV Heated Persulfate TOC Analyzer includes 1 Unpacking Mounting Electrical Connections Gas Connections Quos As Testing the System 3 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 3 2 Mounting the Analyzer The analyzer is for indoor use in a general purpose area The Hazardous Area Option should be used for applications involving hazardous areas The standard model is designed for wall or rack mounting Figure 3 1 1s an illustration of the mounting and Figure 3 2 shows the required front door clearance There are four mounting holes one in each corner of the enclosure Refer to Built drawings in the Appendix Teledyne Analytical Instruments 21 Installation Model 6750 BACK VIEW 20 00 50 80cm pe 18 50 46 99cm 4 21 50 23 00 1 i 54 61 54 42 Figure 3 1 Analyzer Dimensions DOOR CLEARAHCE Figure 3 2 Required Door Clearance Teledyne Analytical Instruments 22 Total Organic Carbon Analyzer Installation i All operator controls and serviceable components are mounted on th
46. he persulfate port of the analyzer into persulfate container 9 Immerse acid line from the ACID IN port of the analyzer into ACID container Teledyne Analytical Instruments 30 Total Organic Carbon Analyzer Setup and Operation Figure 4 2 Gas Liquid Separator D I Filling After reagents and DI have filled all tubing lines it is recommended to proceed with IR Calibration followed by cal liquid calibration of the system Then the analyzer may be placed in service 4 2 Menus The advanced design of the Model 6750 TOC Analyzer eliminates complicated routine and sometimes confusing menus The operator software interface is simple and easy to use Menus prompt the user for required actions or input The analyzer has no manual adjustments calibrations and operations are computer controlled by the operator following menu prompting and selection of the operation of choice The following menu and operation descriptions are intended to guide the operator through all the functions of the analyzer After primary power 110 220VAC has been applied to the analyzer and self diagnostic procedure has been completed the system automatically boots up to the following RUN Screen If not turn main power OFF then ON to reboot 4 2 1 Run Mode RUN This is the normal analysis mode In this mode the display indicates Teledyne Analytical Instruments 31 Setup Operation Model 6750 The curre
47. hosphoric Acid is the acid of choice PREPARATION OF PHOSPHORIC ACID SOLUTION a The container used should be flushed with distilled or deionized DI water b Add 117ml of 85 phosphoric acid to one 1 liter of DI Water CONTACT WITH PHOSPHORIC ACID LIQUID OR VAPOR CAN DAMAGE TISSUE CAUSE EYE DAMAGE RESULT IN SEVERE BURNS AND CAUSE LUNG AND RESPIRATORY DAMAGE WEAR PROPER PROTECTIVE CLOTHING AND SAFETY GLASSES WITH SPLASH SHIELDS TREAT ALL ACIDS WITH CAUTION AND HANDLE WITH CARE ALWAYS WORK IN AN APPROVED FUME HOOD WHEN HANDLING OPEN CONTAINERS OF ACIDS End to End Calibration 38 Total Organic Carbon Analyzer Setup and Operation Note On the initial Startup IR gas calibration should be performed prior to liquid calibration a Select CALIBRATE from the main menu The following screen will appear File Chart Edit Help x R 0 TOC Infrared Analyzer mg L b Select TOC The following screen appears File Chart Edit Calibrate Help x 0 Fiow 010 6377 D Liquid Calibration Span eK Y Cancel c Flow ZERO D I Water and allow NDIR reading to stabilize For maximum accuracy especially at lower ranges this process may take 20 minutes When reading is stable select ZERO d Flow Liquid Span Standard Solution Allow NDIR reading to stabilize approximately 15 minutes e Select SPAN It is recommended that the ope
48. ized Halogenated organics contribute significantly greater conductivity than the equivalent non halogenated organic Acidic gases diffuse through membranes and change conductivity NDIR provides specific interference free analysis of CO and is preferred by EPA and other regulatory agencies Figure 2 5 Comparison of TOC Measurement Technologies Teledyne Analytical Instruments 10 Total Organic Carbon Analyzer Theory of Operation 7 T_T Wi o_o HI LEI EE 2 4 Subsystems Principles of Operation The Model 6750 TOC Analyzer is comprised of five subsystems 1 Sample Handling 2 Inorganic Carbon Removal OR Inorganic Carbon Analysis TOC True Method Oxidation 4 NDIR Gas Detection Electronic Signal Processing Display and Control The sample system is designed to accept the liquid sample and any required reagents transporting them through the analyzer to the appropriate components For TOC actually NPOC analysis the sample is pumped initially to the sparger where it is mixed with acid to lower the pH between 2 0 and 3 0 At that pH all inorganic carbon carbonates are converted to dissolved CO gas which is sparged out of the liquid solution by the air O carrier gas At this point any volatile organic carbon is also sparged out and lost for inclusion in the analysis unless TOC True analysis is performed as described below 2 4 1 Sample Handling The sample is processed through
49. ly configured with required safety equipment 2 2 Background TOC analysis is the primary screening tool and control parameter for all water based applications but there are some discrepancies or misunderstanding in just what TOC is comprised of Many manufacturers claim TOC analysis capability without disclosing the limitations of their methods Some treat all TOC analyzers as a commodity with no distinguishing characteristics among them Analytical results reported by the user can therefore be questionable unless the TOC method is matched to the analytical requirement The following discussion is intended to provide the user adequate information in order to allow intelligent cost performance trade offs and select the appropriate TOC method for each application The Model 6750 TOC Analyzer performs the following analyses on the SAME sample TC Total Carbon NPOC Non Purgeable Organic Carbon TIC Total Inorganic Carbon Purgeable Organic Carbon or Volatile Organic Carbon e TOC True Total Organic Carbon Teledyne Analytical Instruments Model 6750 cr m Is To perform correct TOC analysis the analysis system must be capable of measuring all constituents of organic carbon present in the sample Non Purgeable Organic Carbon NPOC and Purgeable Organic Carbon POC Correct TOC analysis must also exclude the Total Inorganic Carbon TIC interference
50. n any material or construction in which defects become apparent within one year from the date of shipment except in cases where quotations or acknowledgements provide for a shorter period Components manufactured by others bear the warranty of their manufacturer This warranty does not cover defects caused by wear accident misuse neglect or repairs other than those performed by TI AI or an authorized service center We assume no liability for direct or indirect damages of any kind and the purchaser by the acceptance of the equipment will assume all liability for any damage which may result from its use or misuse We reserve the right to employ any suitable material in the manufacture of our apparatus and to make any alterations in the dimensions shape or weight of any parts in so far as such alterations do not adversely affect our warranty Important Notice This instrument provides measurement readings to its user and serves as a tool by which valuable data can be gathered The information provided by the instrument may assist the user in eliminating potential hazards caused by his process however it is essential that all personnel involved in the use of the instrument or its interface with the process being measured be properly trained in the process itself as well as all instrumentation related to it The safety of personnel is ultimately the responsibility of those who control process conditions While this instrument may be able to
51. nal Processing Display and Control A true industrialized Microsoft Windows CE Computer offers complete automatic control of the analyzer including the following Benchmark Auto Validation Auto Calibration Auto Cleaning On Board Historical Data for up to one 1 year Paperless Chart Recorder Diagnostics Networking RS 232C 485 Teledyne Analytical Instruments 18 Total Organic Carbon Analyzer Theory of Operation 222 rt 42 2 III III 2 4 5 1 BENCHMARK AUTO VALIDATION Benchmark is the European NAMUR specified validation technique whereby on command a chemical calibration standard is automatically introduced to the analyzer and the response is compared to the previous analyzer calibration If the response falls within a certain specified limit the computer output indicates Benchmark Passed If the response falls outside specified performance limits either a Maintenance Request or a Fault alarm is activated depending on preset tolerances Thus in cases of process spills when the analyzer performance is questioned Benchmark can rapidly and automatically validate analyzer performance It eliminates time consuming and unnecessary recalibration cycles which take the analyzer out of service just when it is most critically needed Benchmark may be on demand or operator programmed for designated day and time activation on a repetitive basis On command manual or
52. nt TOC value IR IR response Flow Carrier Gas Flow rate m Available Memory kb File Chart Edit Calibrate Help x Ra 743 Flows 50 M 6737 dw resi csi a H 22 2 4 2 2 Parameter Menu Although your analyzer has been optimally configured for your application on initial startup the setup parameters should be verified Consult Factory Settings for Your Application As Built Drawings in the Appendix To get to the Parameters menu 1 From the Run Screen select EDIT The following menu will appear File Chart Calibrate Test x Parameters Alarms Benchmark Scheduling Autocal Scheduling Stream Sequencer D DBPR Option COD Correlated BOD Correlated Asta wv 4 9 11 55 aM 9 Note Options not included in your analyzer will have no response if selected Teledyne Analytical Instruments 32 Total Organic Carbon Analyzer Setup and Operation 2 2 2 ZZZ 2 From this menu select Parameters The following screen appears File Chart Edit Calibrate Help x R let Le A Cancel Carrier Flow Rat Liquid Range gt cc mnute son mail m EC EIL A This is the Parameters menu from which the analyzer may be configured to suit the requirements of the operator Verify the following settings are correct or select the desired settings Consult As Built Drawings in the Appendix and Factory Settings Chart
53. of Teledyne Instruments Analytical Instruments referred as TI AI no responsibility by TI AI its affiliates and agents for damage or injury from misuse or neglect of this equipment is implied or assumed Teledyne Analytical Instruments xii Total Organic Carbon Analyzer Introduction G ACE Ac 42 54 4222 W Introduction Teledyne Model 6750 Total Organic Carbon Analyzer provides accurate and reliable on line TOC analysis with Windows CE Operation using the UV Heated Persulfate Oxidation Method This manual includes all necessary information to help you install operate and service your Analyzer The Model 6750 TOC Analyzers have been designed for easy operation and maintenance Particular attention has been devoted to the design whereby any module can be replaced by the operator within 15 minutes Components such as the NDIR unit have been specifically designed with no moving parts and use a corrosion resistant design to further reduce maintenance tasks Operating the analyzer is easy It uses a standard industrial Windows CE computer programmed for complete automatic control there are no operator manual adjustments Operators are advised to study pertinent chapters in this manual to fully utilize the capabilities of the analyzer and avoid problems that could be associated with any instrument The Model 6750 TOC is shown in Figure 1 1 1 1 Main Features of the Analyzer The Model 6750 TOC Analyzer is sophistica
54. portant We have provided many important safety messages in this manual Please read these messages carefully A safety message alerts you to potential hazards that could hurt you or others Each safety message 15 associated with a safety alert symbol These symbols are found in the manual and inside the instrument The definition of these symbols 15 described below GENERAL WARNING CAUTION Refer to the instructions for details on the specific danger These cautions warn of specific procedures which if not followed could cause bodily Injury and or damage the instrument CAUTION SURFACE WARNING This warning 15 specific to heated components within the instrument Failure to heed the warning could result in serious burns to skin and underlying tissue WARNING ELECTRICAL SHOCK HAZARD Dangerous voltages appear within this instrument This warning is specific to an electrical hazard existing at or nearby the component or procedure under discussion Failure to heed this warning could result in injury and or death from electrocution gt Technician Symbol operations marked with this symbol gt are to be performed by qualified maintenance personnel only NOTE Additional information and comments regarding a specific component or procedure are highlighted in the form ofa note No Symbol CAUTION THE ANALYZER SHOULD ONLY USED FOR THE PURPOSE AND IN THE MANNER DESCRIBED IN N THIS MANUAL Teledyne An
55. provide early warning of imminent danger it has no control over process conditions and it can be misused In particular any alarm or control systems installed must be tested and understood both as to how they operate and as to how they can be defeated Any safeguards required such as locks labels or redundancy must be provided by the user or specifically requested of TI AI at the time the order is placed Therefore the purchaser must be aware of the hazardous process conditions The purchaser is responsible for the training of personnel for providing hazard warning methods and instrumentation per the appropriate standards and for ensuring that hazard warning devices and instrumentation are maintained and operated properly Teledyne Instruments Analytical Instruments the manufacturer of this instrument cannot accept responsibility for conditions beyond its knowledge and control No statement expressed or implied by this document or any information disseminated by the manufacturer or its agents is to be construed as a warranty of adequate safety control under the user s process conditions Teledyne Analytical Instruments ii Total Organic Carbon Analyzer Specific Model Information Instrument Serial Number Instrument Range Calibrated for Background Gas Zero Gas Span Gas Teledyne Analytical Instruments Model 6750 Safety Messages Your safety and the safety of others is very Im
56. rator continue to observe the reading and if not stabilized at the desired span setting 2 repeat the span selection until stable Teledyne Analytical Instruments 39 Setup Operation Model 6750 PEU pa U puan m f Ifthe calibration is acceptable select OK or CANCEL if not acceptable The analyzer is now calibrated and ready for analysis 4 4 Operation After proper installation and calibration the instrument is ready to placed ON LINE for continuous operation Note For any non standard or specific operational procedures please refer to the INSTALLATION and AS BUILT drawings in the Appendix or any Addenda that accompanies this manual If applicable the Appendix or Addenda will include details on your specific application which may involve valving stream sequencing automatic calibration etc The RUN screen will automatically appear on the screen It will also appear whenever the computer is rebooted or the power is turned off and back on again Figure 4 3 shows the RUN screen and identifies the data fields Carrier Gas Flowrate onse File Chart Edit librate Help x Resp gt Flow 50 737 lt Available 2 Gs a 25 4 3 7 56 DI Figure 4 3 The RUN Screen Teledyne Analytical Instruments 40 Total Organic Carbon Analyzer Setup and Operation 4 5 Shutdown Prior to shutdown of the
57. rected to the specific NDIR The concentration 15 directly related to sample concentration and 15 reported accordingly 2 4 2 Inorganic Carbon Removal Analysis The choice of either TOC Direct NPOC or TOC True analysis involves a method of either measuring the TIC for a TOC True analysis or not for a Non Purgeable TOC analysis only The Model 6750 Analyzer can perform either method The TOC True method measures the inorganic carbon and is able to detect volatile organic loss in the sparger The NPOC analysis ignores the volatile organics for a less precise NPOC analysis if organic volatiles are present The sparger used in the Model 6750 is a gas liquid counter flow stripper Actual acid addition depends on the amount of sample buffering and pH Factory set up is for a nominal sample pH of 7 0 to Teledyne Analytical Instruments 14 Total Organic Carbon Analyzer Theory of Operation 222 rt 42 2 III III be reduced to approximately 2 0 to 3 0 If the sample is not properly reduced as described in Figure 2 8 Increase the normalcy of the acid reagent until the water exiting the sparger drain is between 2 0 and 3 0 Relationship Among TIC Species at Equilibrium 25 C i 2 H2C03 H HC03 2H C03 CO2 Gas 10 Ion Ion TIC Total H2CO3 NS 0 1 0 01 x 7 T 2 4 6 8 10 12 14 pH Figure 2 8 Relationship Between T
58. red Set alarm setpoints and modes of alarm operation latching failsafe etc 4 1 Analyzer Startup Referring to the Installation section and AS BUILT Drawings in the Appendix check the following 1 Air oxygen supply This must provide a constant pressure of 15 2 0 psi ultra pure oxygen or CO free air at a flow rate up to 500 cc minute Pre purified air may be used with optional Air Purifier P N ST910003 2 Drain Line Check to see if the drain line is free of kinks and loops and allows normal vented gravity flow to an open receptacle jar pipe AN AIR GAP 5 DEFINED IS MANDATORY CAUTION FAILURE TO OBSERVE THIS WILL RESULT IN IMPROPER OPERATION 3 ELECTRICAL Assure proper electrical installation Refer to facility requirements 4 SAFETY All customer and Teledyne specified safety measures are followed Teledyne Analytical Instruments 29 Setup Operation Model 6750 Reactor Cabinet Drain Gas Liquid Separator Clearance Drain Figure4 1 Drain Connections 5 On initial start up or after UV Reactor or Glass Liquid Separator GLS servicing fill the U Tube with D I water as indicated in Figure 4 2 6 Afterall ofthe above checks turn analyzer ON by activating the facility power switch The system starts up in Run Mode 7 Immerse line from sample port of the analyzer into D I water container 8 Immerse persulfate line from t
59. rganic Carbon CO Carbon Dioxide O Oxygen UV light Nonionic by products UV Reactor O 4 TOC CO ionic and aq aqueous phase dissolved 9 gaseous phase CO concentration is measured Function Effluent water containing With infrared light at 3 7 and 4 2 um Chemical Reactions ionic and non ionic COraq CO2 g species Hardware NDIR Figure 2 4 UV Persulfate Method Teledyne Analytical Instruments Total Organic Carbon Analyzer Theory of Operation 222 rt 42 2 III III 2 3 The UV Heated Persulfate Method of Analysis In the UV Heated Persulfate Method as used by the Model 6750 the sample 15 initially mixed with acid and directed to the sparger For TOC Direct NPOC analysis the converted from the inorganic carbon 15 sparged out of solution by the carrier gas and vented to atmosphere Any volatile organic loss would occur at this point exiting the sparger as HC gas For TOC True the TIC related is measured by the NDIR CO detector which is blind to the HC For NPOC analysis the liquid carbonate free sample is then directed to the UV reactor where the remaining organic carbon is oxidized to CO and measured by the NDIR as a TOC Direct or NPOC analysis NDIR analysis of CO is specific and interference free and is used in all critical and regulatory applications The TOC Direct method is the most accurate TOC analytical method as dete
60. rmined by the EPA and other governmental agencies Teledyne also offers conductivity detection but it is of limited use in these applications and is not proposed as a primary detection method for TOC analysis especially in critical industrial applications where multiple or unknown analytes are present Figure 2 5 compares both detection methods For the TC analysis the combined liquid gas sample is sent directly to the reactor where all carbon including the volatile HC is converted to CO The NDIR thus measures the TOTAL including that generated from the TIC volatile HC and NPOC and reports it as TC The important thing is that all measurements are made on the same sample eliminating potential sample introduction errors and multiple sampling inaccuracies Teledyne Analytical Instruments Model 6750 _reeeEe rr 2 2 2 Measurement Technologies CO Detector NDIR or Conductivity WIDE RANGE OF TOC COMPOUNDS organic acids halogenated organics alcohols etc ADDITIONAL INTERMEDIATE BYPRODUCTS formed in thermal and oxidative TOC treatment steps INTERFERENCES TO TOC MEASUREMENT ALL TECHNOLOGIES e Conductivity based technology assumes post oxidation conductivity increase results from only TOC However all ions contribute to increased conductivity Organic acids typically contribute less conductivity after they are oxid
61. ted yet simple to use The main features of the analyzer include TC Total Carbon analysis NPOC Non purgeable organic carbon analysis TOC True Analysis including volatile organics Microsoft Windows Touch Screen Computer with Paperless Chart Recorder Two alarm levels One Master Fault Alarm 3analog 4 20 mA outputs Teledyne Analytical Instruments Introduction Model 6750 r r _ pawana aap a RS 232C and RS 485 outputs Separate electronics and liquid compartments 1 2 Options The following options are available for the Model 6750 TOC Analyzer and are described in Appendix A 3 Correlated BOD COD Dual NDIR Analyzers Benchmark Auto Validation Auto Cal Auto Clean Automatic Multi Range Multi Stream Analysis DBPR Drinking Water 1 3 Typical Applications With excellent TOC accuracy from low parts per million to high concentration levels of salt free samples the Model 6750 is used in a variety of applications including Boiler Feedwater Standard Method 5310 C D Cooling Water EPA 415 1 Drinking Water EPA 9060 Wastewater limited ASTM D 4839 88 River Water ASTM D 4779 88 Oil in Water 1 4 Intended Use of the Analyzer The Analyzer is exclusively designed for monitoring of Total Organic Carbon TOC in water This intended use involves carefully following the instructions provided in this manual and observing all indicated warnings hints and instructions
62. til 4 20 mA is achieved Teledyne Analytical Instruments 68 Total Organic Carbon Analyzer Appendix Appendix A 1Specifications Measurement Methods Temperature Measurement Ranges TC Total Carbon UV Persulfate Oxidation TOC Total Organic Carbon acidification and sparging to eliminate inorganic carbon interference 25 C 5 0 10 through 0 10 000 ppm full scale std Note Range changes often require carrier gas adjustments The Model 6750 uses the precision of computer controlled mass flow controllers to eliminate operator error and the use of inaccurate mechanical flow meters Display Data Handling Analog Output Alarms Performance Response Time Repeatability Zero span stability Linearity Windows with Paperless Chart Recorder 2 Line LCD RS 232C RS 485 4 20mA Two concentration alarms One master fault alarm Dependant upon application 2 FS std Dev 1 sigma 2 FS at 25 C 2 FS Teledyne Analytical Instruments 69 Sample requirements Inlet Pressure Flow Rate Drain Suspended Solids Reagents TOC Mode Calibration Facility requirements Power Air Model 6750 Atmospheric to 3 psig 20cc min nom Gravity drain vented to atmosphere 1 000 microns max Sodium Persulfate 4 0 gal month Phosphoric Acid 1096 v v 4 0 gal month nom One point span Chemical standard computer stored
63. to section Pumps 12 3 12 Verify that carrier loss did not cause the pumps to be turned off Check for AC voltage at terminal strip on inside of application panel Refer to section PUMPS Change tubing Verify sample line is in liquid Teledyne Analytical Instruments 44 Total Organic Carbon Analyzer Maintenance 22 22 Oc m KEPT 422 5 3 Module Service 5 3 1 NDIR Gas Calibration 1 From the Menu select CALIBRATE The following screen will appear 2 Select NFRARED ANALYZER The following Screen will appear File Chart Edit Calibrate Help x IR 0 Fiow 0 6359 TOC mo Cancel 3 Disconnect tubing from reactor output and connect IR calibration adapter P N ST20026 as shown in Figures 5 1 5 2 and 5 3 4 Connect facility tubing to Zero and Span Gas Bottles Teledyne Analytical Instruments 45 Maintenance Model 6750 Figure 5 1 Disconnecting Tubing from Reactor Figure 5 2 IR Calibration Adapter P N ST20026 Teledyne Analytical Instruments 46 IND FHL 2ill Total Carbon Analyzer Maintenance i Reactor Output Tube IR Calibration Adapter PN ST20026 Figure 5 3 Installing Calibration Adapter 5 set IR Zero flow 200cc minute oxygen or CO2 free air for 5 minutes Allow NDIR reading to stabilize Select ZERO NDIR reading is reset to 0 6 To set IR Span
64. ve gases The NDIR unit requires no optical chopper motor or mechanical devices but utilizes a single flashing infrared source to optically chop the infrared IR beam which equally irradiates CO reference detectors Using a reference eliminates water vapor interference The non reflective corrosive resistant sample cell removes the requirement for chemically removing acid gases prior to detection Automatic gain control AGC is employed during the reference sample cycle to compensate for such factors as IR source deterioration dirty optical windows etc When the AGC level reaches a predetermined threshold an optics alarm is activated Malfunctions of major NDIR components are detected and indicated as an alarm providing fail safe operation Signal detection is completely synchronous and because of the differential ratioing technique drift is virtually eliminated All critical optics are protected by sapphire windows The NDIR optical bench can be easily disassembled and windows cleaned rarely ever required and reassembled within fifteen 15 minutes without realignment or the use of any tools The benefit of this absolute measuring dual line spectral differential analytical technique is that it provides simple direct measurement of all contributing factors including background for a true and accurate calibration and precisely offsets these effects for very accurate TOC determinations 2 4 5 Electronic Sig
65. y carrier gas must be free of and hydrocarbons and be regulated to 15 2 psi and connected as shown in As Built Drawings in the Appendix NDIR Vent gas exhaust Exhaust connections must be consistent with the hazard level of the constituent gases Check Local State and Federal laws and ensure that the exhaust stream vents to an appropriately controlled area if required CAUTION OPERATING THE UNIT WITHOUT CARRIER GAS CAN DAMAGE THE ANALYZER 3 5 Checking the System Before applying power to the instrument check All gas and lines as well as vent and drains are properly connected and there are no leaks in the lines or at fittings Power and signal wiring are correct and that there are no frayed or loose wires that could cause a short Prior to powering up the system and using the instrument for analysis the system must be configured for your application and calibrated This is described in Section 4 Teledyne Analytical Instruments 27 Installation Teledyne Analytical Instruments Model 6750 28 Total Organic Carbon Analyzer Setup and Operation Cc 422 li se EI Setup and Operation Once the analyzer has been installed it can be configured to your application To do this you will Setsystem parameters e Calibrate the instrument Define the analysis range Then choose auto ranging or select a fixed range of analysis as requi

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