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Honeywell SmartCET Corrosion Monitoring Transmitter Operator

1. 30 SmartCET CET5000 User Manual 11 06 Operation 6 4 Device Setup Parameters Double click on Device Setup From the Device Setup menu several tools are available for reviewing and adjusting information from the device Double click on the desired topic and refer to the section shown below for details e Process Variables Section 6 4 1 e Diagnosis and Service Section 6 4 2 e Basic Setup Section 6 4 3 e Detailed Setup Section 6 4 5 e Review Section 6 4 6 El DC625 Device Setup Device View Window Help St a GO coo ch Y CH Online Process variables 3 Device Setup Diag Service Basic Setup Detailed Setup REVIEW CH HART Beat Figure 6 3 Device Setup Dialog Box 6 4 1 Process Variables Double click on Process variables and the following screen appears All parameters are read only SDC625 Process variables Device View Window Help OC Bl Main CH online EI 7 2900 miliyr 13 Device Setup pal 18 22 E Process variables 6 216 m 3 Diag Service SE SR Bees e 0 0010 none 03 Detailed Setup E 0 2102 Y LJ REVIEW kb 1 5104e 003 uAjcm 2 Gb HART Beat Figure 6 4 Process Variable Dialog Box PV The units used to measure general corrosion rates General corrosion rate can be expressed in either mil year or mm year PV rnge Percent of Range Variable that tracks the Digital Value representation with respect to the range defined by the Lower Range Val
2. 2 3 Device Setup A LI Process variables uh B Stern Geary 0 0256 Y 3 Diag Service Ohn A Elec Area 4 75 Cmz J Basic Setup wy K Comb Props 11600 0 cm3 s y r 3 Device Information 3 Range and Units 4 Detailed Setup CH HART Beat Figure 6 10 Corrosion Parameters Dialog Box B Stearn Geary B value is expressed in mV and is typically 25 6 mV set as default for most reactions For more information please see Section 9 3 A Elec Area The factory default is 4 75 cm which is the value for finger electrodes K Comb Props A corrosion constant K is dependent on the metal properties and required for proper corrosion current measurement Corrosion constant K is determined by referencing Table 2 1 11 06 SmartCET CET5000 User Manual 35 Operation 6 4 5 2 Advanced Variable El SDC625 Advanced Var Device View Window Help A St Zi GH col eh ei Online 9 Device Setup 3 Process variables 3 Diag Service J Basic Setup CG Device Informatior 3 Range and Units 3 Detailed Setup 3 Corrosion Param 3 DD Var 3 REVIEW i Adv Password 5 HART Beat Figure 6 11 Advanced Variable Dialog Box AdvPassword N A 6 4 6 Review Click Review The review screen shows all of the variables for corrosion measurement The values shown in Figure 6 12 are the default values SDC625 REVIEW Device View Window Help 0 al sat a E dl CH el LI Main CH Online 3 Device Setup LI Process variab
3. 40 C to 80 C SmartCET CET5000 User Manual 15 Installation 3 3 Mounting 3 3 1 Dimensions TRANSMITTER TRANSMITTER HOUSING HOUSING SIDE VIEW TOP VIEW q 25mm EXTENDED CABLE FOR REMOTE MOUNTING LENGTH 6 or 12 feet e 51mm Q 0 34 Q8 65mm mmm DIRECT MOUNT REMOTE MOUNT OTT O 2 36 60mm S z 4 2 78 a 0 78 70mm 20mm 1 0 FITTING FOR FITTING FOR FITTING FOR DIRECT MOUNT DIRECT MOUNT DIRECT MOUNT J ONLY NLY ONLY B THICKNES 3 ANSI B 16 5 on Sim STANDARD 51mm a D LENGTH LEN H 8 12 or 18 8 12 or 18 or 24 7 50 FITTING 190 RI 3 4 NPT FITTING INSERTION NYLON G LENGTH COMPRESSION FITTING Pin ze Qo 7s Qo 75 19mm 19mm 19mm A PR 4 25 3 ELECTRODE 3 ELECTRODE 32mm NDCAP ENDCAP GLASS EPOXY 316 STAINLESS STEEL 316 STAINLESS STEEL 316 STAINLESS STEEL ADJUSTABLE ADJUSTABLE FIXED FIXED FLANGE PROBE amp ELECTRODE PROBE amp ELECTRODE PROBE amp ELECTRODE Figure 3 1 SmartCET5000 Transmitter and Probe Dimensions 3 3 2 Mounting safety procedures and hints The corrosion probe must be installed in a location that is most susceptible to corrosion In most cases corrosion tends to occur where water is trapped or stagnant However it can also accelerate at the bend of the pipe or where corrosion has occurred previously but is accelerated by high flow or turbulence The electrodes should be selected to reflect
4. m m m mi m m mi m m miim m S33 3 A 3 3 Ss E e S38 Ss Ss SB Sse 3 3 34 3 3 333 3 3 a E e 3 3 33 3353 3 3 33 3 S33 3 33 3 3 3 D 3 3 D e 3 3 3 No Selection No selection er Available Only With Not Available With Restriction Letters Table Selection Table Selection NP3 000 12 SmartCET CET5000 User Manual 11 06 11 06 Specifications RESTRICTIONS Avalan Only With Not Available With Ziel Segen _ Restriction Letters j L N___ Q___ See Smart ET CET5000 User Manual 13 Specifications CET5000 Supplemental SmartCET Corrosion Transmitter Accessories amp Kits Part Number Galvanic Isolator 1 Channel 50022364 001 Galvanic Isolator 2 Channel 50022364 002 Remote Probe Cable 6 Ft 50022365 001 Remote Probe Cable 12 Ft 50022365 002 Hart USB Modem 50022366 001 Hart Interface Module no relays 50022367 001 Hart Interface Module two relays 50022367 002 Consult Honeywell Order Entry Systems for current parts pricing Table 2 1 Electrode Material Guide CTI TA ros ass otomanos mmm o ato mo ae l a o ue tasty are teas 14 SmartCET CET5000 User Manual 11 06 3 1 Installation 3 Installation Contents of delivery CAUTION It 1s essential to follow the instructions concerning the unpacking transport and storage of this instrument given in the section 3 2 Pre installation Information The contents of delivery consist of
5. Assembled instrument m Stainless steel probe for insertion style probes m 3 electrodes elements attached loosely to insertion probes or could be standalone 3 ring electrodes Cable remote mount version only Safety bracket Remote transmitter mount bracket remote mount version only Accessories if any are ordered Instruction manual this document 3 2 Pre installation Information Unpacking If the transmitter has not been removed from its shipping carton inspect the carton for damage then remove the transmitter e Inspect the unit for any obvious shipping damage and report any damage due to transit to the carrier e Make sure a bag containing mounting hardware is included in the carton with the controller e Check that the model number shown on the inside of the case agrees with what you have ordered Attention All probes are shipped with the insulating gaskets installed Upon removing the protective cap ensure that the O rings are not loose The O rings are made of Viton and if not installed the probe will not operate properly Please refer to Figure 3 11 Transport A CAUTION Protect the transmitter electrodes from damage Do not attempt to carry the transmitter by its electrodes Storage 11 06 Pack the instrument for storage or transport so it is protected against impact The original packing material provides the optimum protection for the device The permissible storage temperature is 40 F to 176 F
6. Division 1 Groups B C D Devices can be located in Class I II HI Division 1 Groups A B C D E F G In Europe Modules can be mounted in Zone 1 Group IIC Devices can be located in Zone 0 Group IC For further information please consult Experion publication EP03 420 300 or 210 TPN Network The Process Manager family of controllers offers field termination assemblies FTA built in with galvanic isolators and intrinsic safety barriers Please consult with your local HPS Systems Account Manager to determine correct FTA to order Post Installation Check After wiring the transmitter and connecting the probes perform the following checks e Is the probe secure and tightened to specified torque See section 3 4 4 e Have the electrodes been cleaned See section 3 4 3 e Is the terminal assignment correct See section 4 1 e Is the housing cover screwed tight e Is the signal conditioner installed between the SmartCET5000 and the PLC or controller SmartCET CET5000 User Manual 11 06 5 1 5 2 5 3 11 06 Configuration 5 Configuration Overview Under standard delivery conditions the SmartCET transmitter will be delivered pre configured with user specific data The user only needs to enter a tag name and descriptor if that information was not provided previously Tag name and descriptor entry can be completed using a HART compatible handheld tool like the Honeywell MC Toolkit with SDC625 tool or through a network so
7. Titanium GR2 Electrode Material Hastelloy C 276 ASTM A105 Carbon Steel AISI 1010 Carbon Steel AL6061 Aluminum A106 GrB A36 5LGrB C2000 C22 Ductile Iron Grade 65 45 12 A182 F5 5Cr 1 2Mo A182 F9 9Cr 1Mo API5LX 65 Carbon maganese pipeline steel Duplex 2205 A516 Gr70 API 5LX52 STE 360 7 317L stainless steel TABLE IV Transmitter Aluminum housing with 3 4 electrical Electrical Output Electronic Output 4 20mA with HART Direct Mount not for ring electrodes Remote 6 feet cable Remote 12 feet cable Special Consult Factory Transmitter Mount TABLE V Approvals General Purpose GP Approvals CSA NI Class 1 Div 2 Group A D D2 CSA IS Class 1 Div 1 Group A D ATEX FM IS 8 SmartCET CET5000 User Manual 11 06 TABLE VI Insertion Length for Insertion Probes or Ring Flange Size Class Finish Insertion length 11 06 inches 5 0 inches 5 2 inches 5 4 inches 5 6 inches 5 8 inches 6 0 inches 6 2 inches 6 4 inches 6 6 inches 6 8 inches 7 0 inches 7 2 inches 7 4 inches 7 6 inches 7 8 inches 8 0 inches 8 2 inches 8 4 inches 8 6 inches 8 8 inches 9 0 inches 9 2 inches 9 4 inches 9 6 inches 9 8 inches 10 0 inches 10 2 inches 10 4 inches 10 6 inches 10 8 inches 11 0 inches 11 2 inches 11 4 inches 11 6 inches 11 8 inches 12 0 inches 12 2 inches 12 4 inches 12 6 inches 12 8 inches 13 0 inches or mm 13 2 inches 13 4 inches 13 6 inches 13 8 inches 14 0 inches
8. localized pitting corrosion CET5000P To further enhance the accuracy of the LPR technique the default Stern Geary constant B value is accessible to be changed in the transmitter better reflecting the actual process application At the completion of each measurement cycle the respective corrosion rate or Pitting Factor in the form of a 4 20mA HART signal is produced and made available to the plant personnel Model CET5000M 11 06 The SmartCET multivariable transmitter CET5000M performs the same functions as the single variable versions above and more The multivariable transmitter will detect both general corrosion and localized corrosion pitting in real time in one instrument The CET5000M model provides four outputs which include general corrosion rate an indicator for localized corrosion Pitting Factor a measured Stern Geary constant B value and a corrosion mechanism indicator These four outputs are accessible to a distributed control system or process knowledge system via a 4 20mA signal with HART protocol Any model of the SmartCET corrosion transmitter interfaces to the process environment through a process specific probe and electrode combination Transmitter Housing Optional Extended cable For Remote Mounting O 6 or 12 feet length Probe Electrode Figure 1 1 SmartCET5000 Transmitter SmartCET CET5000 User Manual 1 Specifications 1 2 Features e On li
9. 2 Note 2 Corrosion Across the Mechanism Indicator Notes 1 Corrosion rate maximum will depend on the material constants and surface area entered From a measurement perspective 1t relates to the absolute value of the polarization resistance of the working electrode If the polarization resistance 1s very low lt 10 ohms the instrument will be close to current saturation For optimal operation it is preferable to maintain the polarization resistance of the working electrode at values of gt 100 ohms This may be achieved to some extent by changes to the surface area of the working electrode Therefore a specific threshold value in mpy cannot be applied generically However instead of using the corrosion rate reaching a max value as the indicator it might be possible to use one of the command 48 indicators to provide the same thing e g Corrosion rate out of range 2 Items shown in brackets are general statements No specific value can be provided SmartCET CET5000 User Manual 11 06 8 3 11 06 Troubleshooting 3 An exact zero value will not be achieved It will be essentially be zero or something very small e g 0 001 mpy Under conditions when general corrosion is prevalent on the material being monitored the measured corrosion rate observed as the primary variable PV may be expected to show evidence of being stationary for a short term In these cases the corrosion rate will tend to exhibit only slight variation in
10. 3 1 11 06 Operation Basic Setup Double click on Basic Setup and the following screen appears DC625 Basic Setup Device View Window Help O a St z dai CH ol Main MENA CH Online Device Information Device Setup Wy Preference J Process variables LG Range and Units 3 Diag Service D Sees 1 Cl Basic Setup Detailed Setup LJ REVIEW CH HART Beat Figure 6 6 Basic Setup Dialog Box Preference Type refers to either general or localized pitting corrosion monitoring The Type is set at the factory and cannot be changed Type 1 is general corrosion Type 2 is localized pitting corrosion Damping Determines how quickly the output will change with respect to the input Because of long update time 7 minutes there is no need to increase damping If you wish to change the value right click on Damping and then select Edit to call up the change dialog box Highlight the value and change and then press Set The two subsets of the Basic Setup menu are Device Information and Range and Units The Device Information screen is shown in Figure 6 7 Range and Units is represented in Figure 6 8 Device Information Se KE Device Information Device View Window Help Da 21455208 3 3 Main CH Online Oy aca 3 Device Setup Ne 12 13 2005 LI Process variables i ee S e SE Gi Manufacturer HONEYWELL Oy Serial Number 123456 3 Device Information z 3 Range and Units Detail
11. B11 B12 Figure 4 6 Wiring for Local Indicator 11 06 SmartCET CET5000 User Manual 25 Wiring 4 6 4 7 26 Surge Protection and IS Barriers Using an intrinsically safe transmitter in a hazardous area requires an IS barrier Depending upon the Honeywell controller intrinsic safety protection system could be already present on the termination assembly however additional consultation with other suppliers for the required isolators signal conditioners surge barriers intrinsic safety barriers maybe required Determination and implementation of proper surge protection and IS barriers are specific to the application and local codes Each user should determine the level of protection that 1s required An intrinsic safety isolator used in combination with an intrinsically safe SmartCET mounted in a hazardous location meets this requirement so additional isolation is not required For all other applications a signal conditioner capable of repeating the 4 20mA HART signals and providing at least 500V of isolation must be used Experion R300 R210 and R201 Systems The Rail IO Modules Series H are a Din rail mounted solution that provides a compact Experion I O interface which can be mounted and operated in potentially hazardous locations The Series H Rail IO Module provides corrosion protection to test level G3 according to ISA S71 04 1985 is a standard feature of Series H I O components In the US Modules can be mounted in Class I
12. Size Class Finish Selection G P M 135 mm 135 m mj m 145 mm 145 mimi m 155 mm 155 mimi m Insertion length 165 mm 165 m mj m millimeters 175 mm 175 m mj m 185 mm 185 mimi m A rr y yy y yya 195 m m m 205mm ERE E 205 m m m 215 mm 215 mimi m 225 mm 225 mimi m 235 mm 235 mimi m 245 mm 245 mimi m 255 mm 255 mimi m 265 mm 265 mimi m 275 mm 215 mimi m 285 mm 285 mimi m 290 mm 290 mimi m 295mm 295 m m m 300mm EEE O 200 mimi m 305 mm 305 m mj m 310 mm 310 mimi m 315 mm 315 mimi m 320 mm 320 mimi m 325 mm 325 mimi m 330 mm 33 m mj m 335 mm 335 m mj m 340 mm 340 mimi m 345 mm 345 mimi m 350 mm 350 m mj m 355 mm 355 m mj m 360 mm 360 m mj m 365 mm 365 m mj m 370 mm 370 mimi m 375 mm 375 mimi m 380 mm 380 m mj m 385 mm 385 m mj m 390 mm 390 m mj m 395mm 395 m m m AOOmm EEE lt 400 1 mimi m 405 mm 405 mimi m 410 mm 410 mimi m 415 mm 415 mimi m 420 mm 420 mimi m 425 mm 425 mimi m 430 mm 430 mimi m 435 mm 435 mimi m 440 mm 440 mimi m 445 mm 445 mimi m 450 mm 450 mimi m 455 mm 455 mimi m 460 mm 460 mimi m 465 mm 465 mimi m 470 mm 470 mimi m 475 mm 475 mimi m 480 mm 480 mimi m 485 mm 485 mimi m 490 mm 490 mimi m 495 mm 495 mimi m Table VI continued next page 11 06 SmartCET CET5000 User Manual 11 Specifications Availability TABLE VI Insertion Length for Insertion Probes or Ring Flange Size Class Finish Selection GP M m m m mi m m m m m Insertion length m m m millimeters m im m miim m m m m miim m
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14. protocol makes use of the Bell 202FSK standard to superimpose digital signals at a low level on top of the 4 20 mA signal The HART protocol enables two way communication and makes it possible for additional information beyond just the normal process variable to be communicated to and from a smart field instrument Wiring Due to the sensitive nature of corrosion measurement it is important to provide good electrical isolation between the I O system power supply and each 4 20mA HART signal from SmartCET For this reason isolators are required to be installed between the transmitter and the control system if the I O card is not fully isolated from ground Please observe the following guidelines e Always use a grounded power supply on the AC side e Ensure that the I O card is isolated from ground SmartCET CET5000 User Manual 23 Wiring 4 4 24 LESS E i aly DC power supply unit SDC625 EE dE e EE EE pu Ju qu a HART handheld tool HART modem Honeywell MC tool kit Figure 4 3 Connecting a HART Modem or a Hand Held Device Wiring for Non HART Systems For customer orders that require conversion of the HART digital signal to analog current loop signals a HART Interface Module HIM is required Typically a Moore Industries HIM should have been provided The HIM is CSA approved and rated for general ordinary locations It is certified for non incendive Class 1 Division 2 Groups A D A
15. reading Low and Manual Output goes to 3 7 mA Alarm is reset manually by sending another alarm command For example you can select a No Alarm option or select the same alarm option Low and Manual from the pull down menu The device will also reset automatically after the next successful reading No Alarm Alarm is turned off If you wish to change the selection right click on Alarm Config and then select Edit to call up the change dialog box Pull down the menu and make a selection and then press Set Method Method 1 not used Method 2 default setting Filter Freq 50Hz or 60Hz in reference to line power frequency 120 vs 220 VAC If you wish to change the selection right click on Filter Freq and then select Edit to call up the change dialog box Pull down the menu and make a selection and then press Set Meas Mode The default 1s Meter Other parameters require additional evaluation software If you wish to change the selection right click on Meas Mode and then select Edit to call up the change dialog box Pull down the menu and make a selection and then press Set The two subsets of the Detailed Setup Screen menu are Corrosion Parameter and Advance Variable The Corrosion Parameter screen 1s shown in Figure 6 10 the Advance variable screen 1s represented in Figure 6 11 6 4 5 1 Corrosion Parameters DC625 Corrosion Param SEE Device View Window Help Di 20 fat 0 1 de zd
16. suitable enclosure is required for hazardous locations The HIM device requires a loop resistor of at least 250 ohms and a maximum of 1100 ohms as shown in Figure 4 4 The selected IS barrier must be able to operate within this range CET5000 Galvanic Prime Variable Connection Note In this setup the power to the transmitter is being supplied from the galvanic isolator Most controllers in the field are setup to provide power to the field device If that is the case the controller setup should be changed so that it does not provide power to the field device R HART must be present and equal to 2500 R sense can be any value as long as R sense R HART is gt 250 and lt 1100 Q Isolator R HART R sense A_Y Moore Industries Figure 4 4 Wiring for Non HART Systems SmartCET CET5000 User Manual 11 06 Wiring 9 AO1 Ancillarv Variables Figure 4 5 HIM Output Wiring Figure 4 5 shows the wiring of the HIM device if it is providing power If the controller is providing loop power the HIM terminal pairs that should be used are 5 and 6 8 and 9 and 11 and 12 4 5 Wiring for Local Indicator The diagram below shows the recommendation for wiring to a local indicator and using the HART interface module Prime Variable Connections Hazardous R comms Safe Galvanic DI NN E N N R sense R comms must be gt 250 and lt 1100 Ohms B10
17. the short term perhaps over periods of hours or longer Any slight process change such as temperature variability is often reflected in the corrosion rate behavior Larger excursions in the corrosion rate may be experienced if there are more pronounced changes to the environment for example due to flow rates or changes in composition The secondary variable Pitting Factor will typically be a low value under these conditions e g lt 0 01 although it may exhibit some short term response to abrupt changes in the environment for example sudden changes in temperature flow rate or fluid composition The tertiary variable the B value will usually fall in a range of 0 010 to 0 030 volts and will be stable The quaternary variable Corrosion Mechanism Indicator 1s largely dependant on the type of material being studied but generally if active corrosion 1s being observed gt Smpy it will tend to be significantly larger than the case for very low corrosion rates If low general corrosion rates are being observed which are close to instrument baseline lt 0 05 mpy the Pitting Factor may appear artificially high e g gt 0 01 When localized corrosion is occurring the observed general corrosion rate values may be in the range 0 1 to 10 mpy or higher depending on the material and the environment The Pitting Factor will tend to exhibit higher magnitude peaks of activity during pit initiation events whereas propagating pits may be a
18. 100 mil year in this case Not applicable if Preference is set to type 2 If alarm is enabled the loop current will go to alarm condition if the measured value exceeds this limit 6 4 5 Detailed Setup Double click on Detailed Setup and the following screen appears El SDC625 Detailed Setup Device View Window Help Ch By dat J GN de 21 e UU Device Setup o 3 Process variables Corrosion Param 3 Diag Service J Alarm Config CT Basic Setup 20 Method i j 0 Filter Freq Device Informatior 7 Advanced Yar Range and Units D Meas Mode Detailed Setup mW MY Password 3 Corrosion Param km LJ Advanced Var w E HART Beat Figure 6 9 Detailed Setup Dialog Box Alarm Config Set the alarm preferences for certain corrosion rates 0 110 mil for example with this pull down menu The alarm activates when corrosion goes beyond the URV and LRV range The available options are High and Auto Output goes to 22 5 mA Alarm resets automatically after the next reading 7 min Low and Auto Output goes to 3 7 mA Alarm resets automatically after the next reading 7 min High and Manual Output goes to 22 5 mA Alarm is reset manually by sending another alarm command For example you can select a No Alarm option or select the same alarm option High and 34 SmartCET CET5000 User Manual 11 06 Operation Manual from the pull down menu The device will also reset automatically after the next successful
19. 100 psi 7 bar Mounting NPT nylon fitting Figure 2 3 Epoxy Adjustable Probe 4 SmartCET CET5000 User Manual 11 06 2 3 2 4 11 06 Electrical Specifications Supply Rated Operating Voltage Max Load with 24Vdc supply Linearity Resolution B Value default High Alarm current Low Alarm current Mechanical Specifications Transmitter Housing Protection Enclosure Material Electrical Connection Weight Operating Temperature SmartCET CET5000 User Manual Specifications 9 30 Vdc 9 Vdc min at max loop current 680Q with high alarm 750Q without alarm 0 0015 non linear 17 bit 25 6 mV 22 5 mA 3 7 mA 4X Aluminum Ya NPT 1 1 lb 500g 40 F to 158 F 40 C to 70 C Specifications Model Selection Guide Model Selection Guide 34 SC 16 01 Issue 1 SmartCET corrosion transmitter for Real time online corrosion measurement corrosion is the new process variable The SmartCET multivariable transmitter will detect general corrosion and localized corrosion pitting in real time connecting to a distributed control system or process knowledge system The CET5000M model provides four outputs which include general corrosion rate an indicator for localized corrosion Pitting Factor Stern Geary constant B value and fourth variable to help diagnose the corrosion mechanism The transmitter connects to the process environment through a process specific probe and electrode combination Fe
20. 4 1 Transmitter unit does not respond Wiring Guide HART communication does not The communication resistor is not See Section 4 3 Wiring with function installed properly HART SmartCET CET5000 User Manual 39 Troubleshooting Symptom Possible Cause Recommended Checks 40 Corrosion rate values are very low and do not change Corrosion rates are very high Pitting Factor very low and B values are very low Corrosion rate switches abruptly from high to very low levels Pitting Factor 1s very high and the B value goes to the current default value 1 Probe or probe cable fault bad connection to probe electrodes 2 Transmitter fault This problem could be due to a shorting condition between probe sensing elements This situation 1s symptomatic of when the internal polarization resistance calculation has apparently gone to a negative value with the result that the corrosion rate is indeterminate and a default low value is returned Apparent negative polarization resistances may occur in situations where the corrosion rates are very high and the electrode area is incorrect for the process situation SmartCET CET5000 User Manual 1 Check continuity with test cell connected at probe end of cable May be necessary to remove probe and carry out continuity checks between connecting pins and probe sensing elements 2 Check with test cell connected directly to Amphenol connector on transmitter C
21. 4 3 Connecting a HART Modem or a Hand Held Device occcccccnnnonoooonooonnnnnnnnnnncnnnnnnnnnnnnn non nnos 24 Figure 4 4 W inne tor None MAIR PSY stes EE 24 Ii A WINE susra o A A 25 Hisure 4 6 MWarno tor Local indicara ico 25 Figure 6 1 Device Setup Variabli eebe Eege eebe 28 Fisure 6 2 Online Parameters Dialog e 30 FProure 6 3 Device Setup Dial BOX E 31 Figure 6 4 Process Ebene 31 Pigure 6 lt 5 Diagnosis and Service Dialog BOX is 32 EE ee Setup e Eeer 33 Figure 6 7 Device Information Dialog BOX ai A 33 Figure oS Rance ana Units Dilo Boril 34 Fiare 6 9 Detailed Setup Dialos Bor aa 34 Fisute 6 10 Corrosi n Parameters Dialog BOX venian todito 35 Figure 6 11 Advanced Variable Dialog Box NEEN 36 tere 36 viii SmartCET CET5000 User Manual 11 06 Figure 9 1 Individual Anodic and Cathodic Tafel Slopes occcccccnnnnonooononoooncnnnnnnccnncnnnnnanorononnononoss Figure 9 2 Fundamental Sine Waves and Harmonics 11 06 SmartCET CET5000 User Manual 1 1 Specifications 1 Introduction Overview Models CET5000G and CET5000P The SmartCETO instrument utilizes state of the art algorithms and data analysis techniques to accurately measure corrosion rate and pitting SmartCET executes on a 7 minute measurement cycle and performs an automated standard linear polarization resistance LPR technique or electrochemical noise ECN measurement These techniques provide the corrosion rate CETS000G or an indication of
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23. Honeywell Model CET5000 Series SmartCET Corrosion Monitoring Transmitter Model CET5000 M Model CET5000 G Model CET5000 P Operator Manual Doc No 34 SC 25 01 Revision Date 11 06 Industrial Measurement and Control Copyright Notices and Trademarks Printed in U S A Copyright 2006 by Honeywell Rev 3 November 2006 Warranty Remedy Honeywell warrants goods of its manufacture as being free of defective materials and faulty workmanship Contact your local sales office for warranty information If warranted goods are returned to Honeywell during the period of coverage Honeywell will repair or replace without charge those items it finds defective The foregoing is Buyer s sole remedy and is in lieu of all other warranties expressed or implied including those of merchantability and fitness for a particular purpose Specifications may change without notice The information we supply is believed to be accurate and reliable as of this printing However we assume no responsibility for its use While we provide application assistance personally through our literature and the Honeywell web site it is up to the customer to determine the suitability of the product in the application Trade Marks HART Registered trademark of HART Communication Foundation Austin USA Viton Registered trademark of the company E I Du Pont de Nemours amp Co Wilmington USA Honeywell International Inc Industrial Mea
24. IA HONEYWELL INC 4 th Floor Administrative Builiding of AO Luzhniki Management 24 Luzhniki 119048 Moscow RUSSIA Tel 7 095 796 98 00 01 SLOVAKIA HONEYWELL Ltd Mlynske nivy 73 PO Box 75 820 07 BRATISLAVA 27 SLOVAKIA Tel 421 7 52 47 400 425 SPAIN HONEYWELL S A Factory Josefa Valcarcel 24 28027 MADRID SPAIN Tel 34 91 31361 00 SWEDEN HONEYWELL A B S 127 86 Skarholmen STOCKHOLM SWEDEN Tel 46 8 775 55 00 SWITZERLAND HONEYWELL A G Hertistrasse 2 8304 WALLISELLEN SWITZERLAND Tel 41 1 831 02 71 SmartCET CET5000 User Manual TURKEY HONEYWELL Otomasyon ve Kontrol Sistemlen San ve Tic A S Honeywell Turkey A S Emirhan Cad No 144 Barbaros Plaza C Blok Kat 18 Dikilitas 80700 Istanbul TURKEY Tel 90 212 258 18 30 UNITED KINGDOM HONEYWELL Unit 1 2 amp 4 Zodiac House Calleva Park Aldermaston Berkshire RG7 8HW UNITED KINGDOM Tel 44 118 906 2600 U S A HONEYWELL INC INDUSTRIAL PROCESS CONTROLS 1100 VIRGINIA DRIVE PA 19034 3260 FT WASHINGTON U S A Tel 1 800 343 0228 VENEZUELA HONEYWELL CA APARTADO 61314 1060 CARACAS VENEZUELA Tel 58 2 239 0211 49 Industrial Measurement and Control Honeywell 1100 Virginia Drive Fort Washington PA 19034 34 SC 25 01 Rev3 11 06 Printed in USA www honeywell com imc Honeywell
25. able 9 1 shows the relationship between corrosion rate environment characterization and the recommendation for getting accurate General Corrosion Rate measurements Table 9 1 Corrosion Rate and Environment Characterization Corrosion Rate Environment Comments Highly conductive This could be at upper level of SmartCET accuracy range highly corrosive If used in this environment electrodes with small area should be used e g 1em 1 200mpy Use correct probe type according to process application 0 01 1mpy Low conductivity or Electrodes with large area should be used passive system e g 10cm Extreme passivity or This could be at lower level of SmartCET accuracy range low conductivity e g If used in this environment electrodes with large area organic medium should be used e g 10cm 44 SmartCET CET5000 User Manul 1 06 93 The B value The B value represents a correction factor constant that is determined by the mechanism and kinetics of the corrosion process In a dynamic process research has shown that the B value 1s not constant For example the B value for a sour system with a microbiological influence on corrosion activity could be 4mV The average industry accepted default B value is typically between 25 and 30mV Houston tap water gives a B value of 15mV A severely scaled system e inorganic scale deposits on the metal surface would show a B value of around 100 mV By evaluation of the non l
26. age 14 provides a list of values already calculated for common materials New materials can use the formula below Corrosion constant K mm year is determined by 3270 22 Atomic mass of metal in grams K of e in corrosion reaction Density g cm3 Local Corrosion HART Secondary Measurement Output Stearn Geary HART Tertiary Measurement Output DLC HART Quarternary Measurement Output 11 06 SmartCET CET5000 User Manual 29 Operation 6 3 Online Parameters Double click on Main and then double click on Online S SDC625 Online Device wiew Window Help 0 23 el 2 Si dl e el Main E Online Device Setup 7 2903 mill 6 916 m 40 0000 milf yr 0 0000 milf yr ihn Local Corrosion 0 0010 none wh Stern Geary 0 1979 Y 7 0695e 004 UA cr 2 E HART Beat Figure 6 2 Online Parameters Dialog Box You can change the URV and LRV on this screen Note items in bold text are changeable URV The upper range value 1s 100 mil year maximum default LRV The lower range value is 0 mil year minimum default Double click on URV or LRV in the dialog box to call up the change dialog box Cancel f Cancel High light the value and change and then press Set On the Loop Change Warning dialog box select Yes to change or No to cancel Loop Change Warning A Changing the value of this variable will change the loop current which may upset the control process Do you wish to proceed Y
27. alculate the Pitting Factor How does the technology work e No excitation is applied to the electrodes The electrodes are at rest e SmartCET listens for current noise between the working and counter electrodes 1 For general corrosion e Zero net current flow occurs between the working and counter electrodes e The current signal can be represented by a normal bell curve distribution 2 For localized corrosion e The electrodes exhibit a net current fluctuation e Current distribution will deviate from a standard bell curve e Standard deviation e g noise is present of the signal will increase e Of interest is the amplitude of the signal The generation of current is due to the material naturally corroding in the environment If the ECN current measurement is the same as the current measured from LPR 100 then the Pitting Factor equals 1 and pitting corrosion is present If the ratio is 1 then the Pitting Factor is 0 001 and all corrosion present is due to general corrosion and not pitting e Final note the probe electrodes are electrically isolated from the pipe and hence the measurement is unaffected by pipe noise The noise detected is only related to the corrosion on the probe electrodes A useful analogy to explain the difference between general corrosion and localized corrosion Pitting Factor is that of a flashlight with its beam constantly ON general corrosion and one that is flickering localized corrosion T
28. atures include 4 20mA signal and compatible HART protocol New corrosion measurements available approximately every seven minutes Flexible sensor configuration and design allows for process specific probe and electrode application This MSG produces a valid model number for ordering the transmitter Probes and or electrodes are ordered separately ae Gi SmartCET CET5000 Instructions Select the desired key number The arrow to the right marks the selection available e Make the desired selections from Tables through VI using the column below the proper arrow A dot Pdenotes availability IV V VI oo e E een EU em Deeg Key Number KEY NUMBER SmartCET CET5000 Corrosion Transmitter Selection Availability CET5000G CET5000P CET5000M SmartCET single variable for General Corrosion SmartCET single variable for Localized Corrosion Pitting Factor SmartCET Multivariable Ouput TABLE Process Connection 3 4 NPT 316L 3 4 NPT Nylon Adjustable Fitting 1 150 Ib Flange 1 300 Ib Flange 1 1 2 150 lb Flange 1 1 2 300 Ib Flange 2 150 Ib Flange 2 300 Ib Flange Ring electrode No selection Process Connection TABLE II Probe Material Mounting Length Inches 316 L Inches Epoxy Glass Measurement Probe Millimeters 316L Material Millimeter Epoxy Glass Ring Electrode No selection Table Il continued next page 6 SmartCET CET5000 User Manual 11 06 TABLE
29. be Body 316 Stainless Steel Endcap Seal Glass Fill Material Epoxy Temperature Rating 500 F 260 C Pressure Rating 1500 psi 102 bar Mounting NPT fitting AAA e Figure 2 1 Adjustable 316 Stainless Steel Probe 2 2 2 Fixed Length 316 Stainless Steel Probe The fixed 316 stainless steel probe Figure 2 2 is a fixed length probe The probe assembly consists of an insertion rod with a three electrode end cap a hermetically sealed connector and a 4 NPT pipe plug that is welded in place The insertion length I L is calculated to the end of the electrode and can be ia specified by the customer Electrodes shown in the picture are ordered separately Specifications Probe Body 316 Stainless Steel Endcap Seal Glass Fill Material Epoxy Temperature Rating 500 F 260 C Figure 2 2 Fixed Pressure Rating 3000 psi 204 bar Length 316 Stainless Steel Probe Mounting NPT fitting 2 2 3 Epoxy Adjustable Probe The epoxy adjustable probe Figure 2 3 consists of a glass epoxy probe with a P Ya NPT nylon compression fitting for insertion into the system The studs for mounting the electrodes and the six pin connector are held in place by the epoxy fill material This probe is available only in 11 length Electrodes shown in the picture are ordered separately Specifications Probe Body Glass Epoxy Endcap Seal Epoxy Fill Material Epoxy Temperature Rating 150 F 65 C Pressure Rating
30. chnology and Output Parameters Introduction The multivariable version of the SmartCET corrosion transmitter outputs four corrosion measurements which are e General Corrosion Rate e Pitting Factor e B value e Corrosion Mechanism Indicator The General Corrosion Rate is the average or general corrosion rate and is generally expressed in mils per year mpy or millimeters per year mmpy The Pitting Factor is a dimensionless number that indicates the presence of a pitting localization corrosion environment The B value is expressed in millivolts per decade and is commonly also known as the Stern Geary constant The measurement unit for the Corrosion Mechanism Indicator is A cm The values are all updated every 430 seconds which 1s the total measurement cycle time of the instrument The values for the General Corrosion Rate the Pitting Factor and the Corrosion Mechanism Indicator are set to output the most recent values The B value is slightly different in that the output value is an average of the values over the last 2 3 hour period This averaging provides a more stable representation of the B value If there is a large change in the B value for example from a high value e g 0 15 volts to a low value e g 0 015V the new value will be approached asymptotically over a period of approximately three hours This is normal behavior and will only be noticeable if there are large sustained changes in the B value such as
31. e absolute values obtained may provide the corrosion expert with extra knowledge regarding the corrosion behavior of any particular system Understanding CMI values The CMI is a qualitative indicator of whether a surface film is present or not If there is no film and only corrosion is present the CMI will have an intermediate value Inorganic scale or thick passive oxide films with little or no conductivity will show a low CMI value Analysis of the Corrosion Mechanism Indicator 1s shown in Table 9 4 Table 9 4 CMI Values CMI Value Comments A cm gt 0 2 Possible redox film e g sulfide 0 02 0 2 Freely corroding system 0 0 02 Passive material e g Al Zr Ti Adsorption processes e g some corrosion inhibitors CMI does not provide information on film thickness however it can be used to measure changes for example decreasing values may indicate that more filming or scaling is occurring The Corrosion Mechanism Indicator provides the most useful analysis when coupled with other corrosion information and or process data It is the combination of process data that provides a more complete view into the corrosion mechanism being measured SmartCET CET5000 User Manual 11 06 Sales and Service For application assistance current specifications pricing or name of the nearest Authorized Distributor contact one of the offices below ARGENTINA HONEYWELL S A C BELGRANO 1156 BUENOS AIRES ARGENTINA Tel 54 1 383 92
32. ed Setup 3 REVIEW HART Beat Figure 6 7 Device Information Dialog Box Tag Customer specified identification If you wish to change the value right click on Tag and then select Edit to call up the change dialog box Highlight the tag name and change and then press Set Comm Date Commissioning date Dev Id Field Device identification Manufacturer Honeywell Serial Number This serial number is used to identify specific customer requirements It is also tagged on the outside of the transmitter head SmartCET CET5000 User Manual 33 Operation 6 4 4 Range and Units El 5DC625 Range and Units Device View Window Help IA 20 it Z i SG dl 21 01 3 Main CH Online Device Setup oh 40 0000 mil y r 3 Process variables 0 0000 mil fyr 3 Diag Service 3 Basic Setup LJ Device Information e range and Units Detailed Setup LJ REVIEW CH HART Beat Figure 6 8 Range and Units Dialog Box PV Units General corrosion rate can be expressed in either mil year 1 mil 0 00 linch or mm year If you wish to change the value right click on PV Units and then select Edit to call up the change dialog box Highlight the tag name and change and then press Set URV and LRV Upper range value and lower range value for the corrosion rate For example URV 100 mil year LRV 0 000 The 4 mA would be the zero point at 0 mil year and 20 mA would correspond to maximum corrosion rate at
33. electrode data matching the electrode ordered configured into the transmitter Honeywell uses a three electrode setup as shown in Figure 3 11 The SmartCET corrosion transmitter will not work correctly with a probe using a two electrode configuration Additionally there is no universal standard for the internal wiring of three electrode probes so non Honeywell supplied three electrode probes may or may not be compatible SmartCET CET5000 User Manual 27 Operation 6 Operation 6 1 Overview The multivariable version of the SmartCET corrosion transmitter outputs four corrosion measurements which are e General Corrosion Rate e Pitting Factor also referred to as localized corrosion indicator e B value e Corrosion Mechanism Indicator The General Corrosion Rate is the average or general corrosion rate and is generally expressed in mils per year mpy or millimeters per year mmpy The Pitting Factor is a dimensionless number that indicates the presence of a pitting localization corrosion environment The B value is expressed in millivolts per decade and is commonly also known as the Stern Geary constant The measurement unit for the Corrosion Mechanism Indicator is uF cm Details on each output including a description of the technology used to calculate or measure the output are given in Section 9 Appendix A CET5000M Overview of Technology and Output Parameters A handheld HART communicator can access all opera
34. frame of the equipment shall be bonded to Protective Earth at the source of supply in accordance with national and local electrical code requirements SmartCET CET5000 User Manual 1 vi 1 1 1 2 1 3 2 1 Se 22 2 4 3 1 Se Se 3 4 4 1 4 2 4 3 4 4 4 5 4 6 4 7 Contents INTRODUCTION BEE 1 OV EI CW e EE Een 1 E AAA AAA A AAA A 2 KERUGIAN AA E Aetna OUE 2 SPECIFICATIONS AND MODEL SELECTION GUIDES c ooncocconionionconionionioninn EN 3 PEC CAOS iS 3 EENEG 4 222A Adjustable 316 Stainless Steel Probe iz 4 22 2 Fixed Leneth 316 Stainless Steel Probes a tae es 4 22a Epoxy AIMS AIS EE 4 Plectrical Spec II AIO EE 5 Mechanical SPC CII een EE 5 INSTALLATION EE 15 Contents A A 15 Pre sinstallation e ere EE 15 A e e ee 16 Deel A O eee 16 33 2 Mounting salety procedures and Eege eege EE 16 A no nee eee ee 19 e A a O A 19 AZ EE 19 dd Blectrode E ln EE 19 3AA rol A nn sccdeve salt uavcees eu teaeeuas ieee wea waseees eee ee 20 BAS AN Bracket IMS tala MOMs EE 20 34 6 Mounting Bracket Installano tis je at Got eae ies ae ee 21 WIRING EE 22 Transmitter A nahiator gine testa Meta salsa nautica tesla tele etauet 22 Galante SONA ION EE 23 Wino FoC TAR E 23 A A Pr ne E ERA E 23 2 Eege 23 Wiring tor Non HART WEE 24 Winns tor Local Kee Tee 25 puree Protection and IS Barmiers a 26 POS Clas tel tit Al 26 SmartCET CET5000 User Manual 11 06 5 CONFIGURA HON ee ee 27 A O q 0 PO aacsanace
35. ftware configuration tool like the Experion System Field Device Manager FDM Both of these configuration options use the SmartCET DD Device Description file This file is provided with the product and can also be downloaded from the HART foundation website Either of the HART configuration options can be used to access and change the default transmitter setup parameters or the sensor parameters which are detailed next SmartCET Default Setup As shipped the SmartCET corrosion transmitter will have the following default values already setup for use PV units mpy URV 100 mpy LRV 0 mpy Damping N A Alarm config Auto reset high Line Freq 60Hz B value 25 6mV Measurement Meter Method Reflects the transmitter purchased e g general G pitting P or multivariable M Sensor Configuration The sensing element of the SmartCET corrosion transmitter is the electrode Specific electrode data must be configured into the transmitter for accurate corrosion measurement Electrode specific data includes Electrode area cm3 Density gm cm3 No of electrons Atomic mass gm Resistance ohms K comp Table 2 1 contains a list of common values for specific electrode materials Use this table to enter the K value for the electrode that is in service The K value is a composite value that represents the density electrons atomic and resistance all in a single constant K The Honeywell factory will ship with the specific
36. he interpretation of various Pitting Factor values is shown in Table 9 3 Table 9 3 Pitting Factor Values 0 1 or higher Pitting localized corrosion initiation Note check corrosion rate value 1 very low PF could be misleading 0 01 to 0 1 Intermediate level general corrosion but check PF does not increase above 0 1 SmartCET CET5000 User Manual 47 Troubleshooting 0 01 or lower General corrosion 9 5 The Corrosion Mechanism Indicator 48 The metallic corroding interface is complex and dynamic The general corrosion rate the B value and the Pitting Factor all help to characterize the Faradaic corrosion processes current flow that is the result of electrochemical process quite thoroughly However in order to be more complete in the analysis of the electrochemical response there is at least one more factor which needs to be taken into account During the measurement of the low frequency impedance a reactive phase shifted component of the current response may be detected This is a consequence of the physical nature of the metal environment electrolyte interface and may reflect mechanistic properties such as the presence of films film formation and surface adsorption processes The values obtained are likely to be characteristic of a particular system being studied For example sulfide filming may cause the reactance to become more positive whereas adsorption processes may cause the values to go negative Th
37. hen corrosion goes beyond the URV and LRV range The available options are High and Auto Output goes to 22 5 mA Alarm resets automatically after the next reading 7 min Low and Auto Output goes to 3 7 mA Alarm resets automatically after the next reading 7 min High and Manual Output goes to 22 5 mA Alarm is reset manually by sending another alarm command For example you can select a No Alarm option or select the same alarm option High and Manual from the pull down menu The device will also reset automatically after the next successful reading Low and Manual Output goes to 3 7 mA Alarm is reset manually by sending another alarm command For example you can select a No Alarm option or select the same alarm option Low and Manual from the pull down menu The device will also reset automatically after the next successful reading No Alarm Alarm is turned off Method Method 2 is the default setting Do not change B Stearn Geary B value is expressed in mV and is typically 25 6 mV set as default for most reactions For more information please contact the factory A Elec Area All electrode lengths are standard from the factory 4 75 cm This value should reflect the electrode style selected The factory default applies the three finger electrode style used on insertion probes K Comb Props A corrosion constant K is dependent on the metal properties and required for proper corrosion current measurement Reference Table 2 1 on p
38. ich is particularly useful when studying corroding systems since they exhibit varying degrees of intrinsic noise The result is equivalent to measuring the linear polarization resistance of the working electrode With this measurement the corrosion current hence the corrosion rate is inversely proportional to the polarization resistance This measurement also employs the Stern Geary approximation where the Stern Geary constant or B value is the proportionality constant In practice with no prior knowledge of the system the default value of B for this type of measurement is typically chosen to be in the range 25 to 30 mV in reality the value of B is system dependent Use of the default B value may result in the absolute corrosion rate being somewhat in error but in some instances it is the general trend of the corrosion rate that could be of interest instead of the absolute value Working method summary There are three electrodes in use which are designated working electrode WE counter electrode CE and reference electrode RE A sinusoidal DC voltage is applied on the WE voltage is varied In turn the current response is measured between the CE and WE The ratio of voltage to current provides the polarization resistance The polarization resistance 1s not a true resistance in the traditional sense but can be treated as such in describing the LPR technology The corrosion current is inversely proportional to the polariza
39. igh alarm capability power supply 750 ohms without high alarm Process Temperature Max Custom probes with higher ratings available 316 Stainless Steel Probe Direct Mount 250 F 121 C Remote Mount 500 F 260 C peak 400 F average Glass Epoxy Probe 150 F 65 C Process Pressure Max 3600 psi 245 bar 316 stainless steel retrievable probe double sealed 1500 psi 102 bar 316 stainless steel probe double sealed 100 psi 7 bar glass epoxy probe Mounting Probe mounts direct on process pipe transmitter can be direct or remote mounted to probe Weight 1 1 1b 500g Certifications and Approvals Electrical Classifications e CSA Canada and US Class 1 Div 2 Groups A B C D e CSA Intrinsic Safety Class I II HI Div 1 Groups A B C D E F G e CE Mark e ATEX Ex II 1G EEx ia IHC T4 40C lt Ta lt 70C 11 06 SmartCET CET5000 User Manual 3 Specifications 2 2 Probe Specifications 2 2 1 Adjustable 316 Stainless Steel Probe The adjustable 316 stainless steel probe Figure 2 1 is an adjustable probe commonly used in most field applications The assembly consists of a Y NPT compression fitting an insertion rod with a hermetically sealed three electrode end cap and a six pin connector welded in place The insertion length is adjustable using the compression fitting EN A i i o Electrodes shown in the picture are ordered separately nn TTT Gel Le mg Specifications po Pro
40. inearities in the current response from the LPR measurement it is possible to determine a B value for the system being studied This involves the analysis of the higher order harmonic content of the current response and computation of a value of B for the system being studied With knowledge of the B value it is possible to refine the LPR generated corrosion rate estimate since the uncertainty regarding the standard default B value is removed The B value is directly related to the mechanistic properties of the component anodic and cathodic corrosion processes The anodic process is essentially the metal oxidation and the cathodic process 1s for example the oxygen reduction or hydrogen evolution These are essentially non linear processes and the current will typically but not always have a logarithmic dependence on the applied voltage The B value is a composite of the individual anodic and cathodic Tafel slopes Potential Ecorr Log Icorr Log Current density Figure 9 1 Individual Anodic and Cathodic Tafel Slopes The B value is calculated using the following B ba bc 2 303 batbc 11 06 SmartCET CET5000 User Manual 45 Troubleshooting 46 So these individual slopes are representative of non linear processes In the calculation of the general corrosion rate the B value approximation assumes that the processes are essentially linear for a small applied potential for example 10 20 mV away from the corrosion pote
41. information to order a replacement transmitter probe with electrode or electrode only Please specify which item is required since the model number contains information on the entire product A WARNING A If the pipe or vessel into which the SmartCET5000 is to be inserted is under pressure and or contains any hazardous substance such as steam caustic solutions acids toxins or other substances specified by OSHA as physical or health hazards the pipe or vessel must first be depressurized and any hazardous substance purged there from and appropriate lockout tagout procedures observed in accordance with Section 1910 147 of the OSHA Regulations before SmartCET5000 can be removed or the electrodes replaced Failure to follow these procedures may result in serious injury or death 7 1 2 Transmitter Accessories Common transmitter accessories which are supplied at the time of order placement are shown below 50022362 001 Safety bracket for transmitters with direct mount probes 50022362 002 Safety bracket for probes remotely mounted 50022363 001 Remote mount transmitter mounting bracket 50022365 001 Remote cable 6 foot 50022365 002 Remote cable 12 foot 7 2 HART Accessories Some installations include a HART interface module that converts the HART SV TV and QV parameters into three analog signals This module is designed for those systems that do not natively support the HART protocol in the controller of the process control sys
42. ition 6 This tightening sequence will crimp the internal ring onto the probe body and should lock the fitting in place now 7 Tighten the lower nut onto the pipe nipple or access point LA Note For fixed type probes without the adjustable compression fitting only the 1 1 16 hex nut needs to be tightened and the safety bracket 1s not required below Additionally ensure the flow rate of the process fluid does not exceed 20 feet per second fps Stronger flow might damage probes with three finger electrodes and interfere with the reading If the flow rate exceeds the recommendation a different probe style may be required 3 4 5 Safety Bracket installation 20 The adjustable version of the SmartCET5000 probe uses a compression fitting to provide the seal A safety bracket is provided with every adjustable probe and must be installed before the process is under pressure See Figure 3 13 Please follow the assembly SmartCET CET5000 User Manual 11 06 instructions below 1 Screw nut 2 onto threaded rod 3 2 Screw threaded rod 3 into base plate 1 3 Tighten nut 2 to lock threaded rod 3 in place 4 Slide top plate 4 onto threaded rods 3 Note Top plate 4 must be assembled with label on top 5 Place lock washer 5 and nut 6 onto threaded rod 3 6 After sensor is mounted into pipe slide safety bracket into place and tighten nut 6 to lock bracket into place Note If
43. les CJ Diag Service zi LIT Basic Setup Detailed Setup milir 40 0000 mil vr J 0 0000 mill sr VE 0 01 s wh Alarm Config No Alarm e H Mett Eh E Shern Geary 0 0256 Y y A Elec Area 4 75 eme DE E Comb Props 11600 0 cm3 siyr A Local Corrosion 4 0010 none 0 Stern Geary 0 1045 Y vi 9 0927e 004 u lmc 3 HART Beat Figure 6 12 Review Screen 6 5 Initial Operation Now that the probe and electrode is in the process fluid and the SmartCET corrosion transmitter is properly wired the SmartCET should be ready for normal operation The electrodes will require some residence time in the process fluid before corrosion can be accurately measured SmartCET should also go through multiple measurement cycles each cycle is approximately seven minutes long before the corrosion measurements represent the true corrosive conditions This waiting period is especially necessary if the SmartCET transmitter was powered up prior to being connected to a probe 36 SmartCET CET5000 User Manual 11 06 Replacement Parts and accessories 7 Replacement Parts and Accessories 7 4 SmartCET5000 Parts Please submit the serial tag number and model number when ordering replacement parts for SmartCET5000 7 1 1 Transmitter Probe with Electrodes or Electrode Replacement The model number will have the following form factor CET5000 M N21 CB A 080 0A A2 IH1 D2 050 The combination of the model number and serial number will provide the necessary
44. ll Probe Material Mounting Length continued Probe Mounting and Style Probe Length 11 06 Standard Insertion Direct Mount Fixed SS Viton Standard Insertion Remote Mount Fixed SS Viton Standard Insertion Direct Mount Adjustable SS Viton Standard Insertion Remote Mount Adjustable SS Viton Retractable Insertion Remote Mount Adjustable SS Viton Special Consult Factory Standard Insertion Direct Mount Fixed SS Kalrez Standard Insertion Remote Mount Fixed SS Kalrez Standard Insertion Direct Mount Adjustable SS Kalrez Standard Insertion Remote Mount Adjustable SS Kalrez Retractable Insertion Remote Mount Adjustable SS Kalrez Flush Probe Direct Mount Fixed SS Triangle disks geometry Flush Probe Remote Mount Fixed SS Triangle disks geometry Flush Probe Direct Mount Adjustable SS Triangle disks geometry Flush Probe Remote Mount Adjustable SS Triangle disks geometry Retractable Flush Remote Mount Adjustable SS Triangle disks geometry Flush Probe Direct Mount Fixed SS Interleaved Flush Probe Remote Mount Fixed SS Interleaved Flush Probe Direct Mount Adjustable SS Interleaved Flush Probe Remote Mount Adjustable SS Interleaved Retractable Flush Remote Mount Adjustable SS Interleaved High pressure insertion Remote Fixed SS High pressure flush Remote Fixed SS Triangle disks geometry High pressure flush Remote Fixed SS Interleaved Ring electrode Re
45. may occur during commissioning of the device or when switching from a test cell to a corrosion probe Detail of each output parameter is presented in this appendix including a description of the technology used to calculate or measure the output General Corrosion Rate SmartCET uses the Linear Polarization Resistance LPR technique to calculate the General Corrosion Rate This calculation is usually the prime variable of interest since it reflects the overall rate of metallic corrosion Corrosion may be directly related to operational parameters such as temperatures flow chemical composition etc SmartCET uses three electrodes that are referred to as the working counter and reference electrodes A low frequency sinusoidal voltage excitation is applied to the working electrode with respect to the reference electrode and the current is measured and analyzed on the counter electrode synchronously with the applied signal Given a sinusoidal pattern the working electrode becomes positively charged and then negatively charged in other words polarized positively and negatively It is a DC voltage applied in a sinusoidal pattern and resembles an AC pattern The peak to peak value of the sinusoidal wave is 50mV SmartCET CET5000 User Manual 43 Troubleshooting Strictly this is a measurement of the real part of the low frequency impedance of the working electrode This method of analysis is selected due to its superior noise rejection wh
46. minal before connecting the device Connect SmartCET as follows 1 Unscrew housing cover 2 Insert cable through one of the 4 NPT electrical ports 3 Make electrical connection See terminal assignment in Figure 4 1 4 If the cable has a shield it should only be connected at one end Please follow the convention at the plant site of whether to connect the cable shield at the field side e g in the transmitter or at the controller side In general most users elect to connect the cable shield in the control cabinet 5 Screw on housing cover Max 1 8 in Figure 4 1 Transmitter Wiring 22 SmartCET CET5000 User Manual 11 06 4 2 4 3 4 3 1 4 3 2 11 06 Wiring Galvanic Isolation In general for Honeywell equipment the negative side of the analog termination screw on the controller 1s connected to the MRG Master Reference Ground The SmartCET probe being in contact with the process and plant equipment could also be grounded The existence of two grounds will cause errors in the SmartCET corrosion values Therefore a galvanic isolation module should be connected as shown in order to provide proper isolation NOTE isolator power leads notshown 24V 24V Galvanic Isolator Figure 4 2 Galvanic Isolation connection 250 ohms Wiring for HART Introduction The SmartCET5000 transmitter supports HART communication protocol HART is an acronym for Highway Addressable Remote Transducer The HART
47. mote Mount Virgin PTFE gasket Specify electrode flange class and finish Ring electrode Remote Mount Garlock Gylon gasket Specify electrode flange class and finish Ring electrode Remote Mount other gasket material Specify electrode size and pressure rating No selection 8 inch for 316L or epoxy glass NPT Process Connection 12 inch for 316L NPT or Flange Process Connection 18 inch for 316L NPT or Flange Process Connection 24 inch for 316L NPT or Flange Process Connection 200 mm for 316L or epoxy glass NPT Process Connection 300 mm for 316L NPT or Flange Process Connection 450 mm for 316L NPT or Flange Process Connection 610 mm for 316L NPT or Flange Process Connection Ring Electrode No selection SmartCET CET5000 User Manual Specifications Availability Selection P G d d d d d 0 d d d d d d d d d d d d d d d d d d oO OO OO oO OO OO OO OO OO OO e OO OO ass D OG OO OO OO OG OO OO OO D GO e OO OO ea D D D D D e oO Q Q Q Q Q Q Q e O Q Q Q Q Q Q Q e oO Q Q Q Q Q Q Q Specifications Availability TABLE lll Electrode Material Guide Selection G P M 1018 Carbon Steel A53 Grade B Carbon Steel AISI 304 Check with factory AISI 304L AISI 316 Check vith factory AISI 316L Carpenter 20 Cb3 Monel 400 CDA715 70 30 Cu Ni CDA 110ETP 99 9 Cu CDA 706 90 10 Cu Ni CDA687 Al Brass Check with factory CDA443 ARS AD Brass Aluminum 1100 Aluminum 2024
48. nciea A T TO toad 27 S2 MA Seu cs ea ese 27 Ded Sensor CONCA ON eeen ea I TE de ZF 6 OPERATION ee 28 Gl el 28 02 Vanlables and DEMOS rai ti 28 63 Online Parameters EE 30 04 tee 31 6A A A A A A 31 AE ER EE TE 32 CAS E E TEE 33 GAA Ranec and Ulsa dd 34 Oey E EE 34 A A 36 A O Gado ae eA 36 7 REPLACEMENT PARTS AND ACCESSORIES ccccsceeeeeeeeeeeeseeeeeeeeeeeees 37 Bl Smart BL SOO RATES ata e AG 37 7 1 1 Transmitter Probe with Electrodes or Electrode Replacement ococcccccccnccccccnnicinono 37 A Eo A A E E A O A 37 Be ARE ACCES e EE 37 8 TROUBLESHOOTING EE 38 SA A Pe OT 38 8 2 Diagnosis of Transmitter Health from Measurement Data 38 So General roubleshootns EELER 39 8 4 Recommended Operating Condtons nono nono nono non nono non nono nn nnn conos 41 8 4 1 SmartCET Use in Low Conductivity Environments cccccnnnnnnnnnnnnnnnnnnnnnnininnnnnnnnnininininininess 42 9 APPENDIX A CET5000M OVERVIEW OF TECHNOLOGY AND OUTPUT PARAMETERS iia 43 A a A E A A E AA MeRRTE Eee 43 92 General Comos on Ee 43 Ge The E 45 GE e Wel ald Fa A A A A 47 93 The Corrosi n Mechanism Indic ator ii 48 11 06 SmartCET CET5000 User Manual Vii Tables Table 2 1 Electrode Material ne 14 Table 3 1 Mounting safety procedures and hmts cc ccccccsscecceccecceeececececeeceecececeeeeeaeeeeseeeeeeeeeeeeeeeees 17 Fable 8 1 Diaenosis or Transmitter ett EE 38 Table 3 2 Troubleshooting PC dee da ad do 39 Table 9 1 Cor
49. ne Real Time Corrosion Monitoring e Two wire 4 20mA HARTOTransmitter e General or Localized Corrosion Pitting Monitoring e Withstands 1500 psi 102 bar Process Pressure higher pressures can be accommodated through additional probe designs e Standard NPT Process Connection for Insertion Probe style other connections supported e Custom Configuration e Multivariable Output Model CET5000M with general corrosion rate localized corrosion indicator pitting dynamic B value and an additional variable for corrosion mechanism analysis 1 3 Identification The SmartCET transmitter has two labels on the transmitter housing Shown on the left is the label with full CSA and ATEX certification General purpose rated transmitters will not have the certification body references The label on the right will contain a stamped model number and serial number Honeywell Smart Input 9 30 Vde Output 4 20mA HART l CL Div 1 Gr AB C D Ta Exia P CL il Div 1 GrEEG Cl iii E UD S Aug 40 C lt Ta 70 CSA Type AN IP67 Ex 1176 EEx ia IIC T C LCIE OGATEX601 2X 0081 WARNING SUBSTITUTION OF COMPONENTS MAY IMPAIR INTRINSIC SAFETY INTRINSICALLY SAFE WHEN INSTALLED PER DRAWINGS 50016221 Honeywell Smart Part No Serial No Made in U S A 2 SmartCET CET5000 User Manual 11 06 Specifications 2 Specifications and Model Selection Guides 2 1 Specifications Max load with 24VDC 680 ohms with h
50. ntial and only takes into account the first order linear processes The harmonic distortion analysis takes into account the second and third order processes i e it is similar to fitting a polynomial to x but we use the higher frequency harmonic components to analyze rather than trying to fit a polynomial it s a much better analysis route SmartCET uses Harmonic Distortion Analysis HDA to calculate the true B value With an accurately computed B value the default B value used in the LPR calculation can be changed thus enabling a more accurate corrosion rate calculation to be made How does the technology work A low frequency AC voltage 10 mHz is applied on the working electrode The current signals are analyzed at 10 20 amp 30 mHz harmonics The response at each harmonic is used to calculate the B value fundamental sine wave and harmonics Wit 05 Wart US U4ct art time seconds Figure 9 2 Fundamental Sine Waves and Harmonics Table 9 2 provides analysis on the corrosion mechanism based upon the B value and typical anodic and cathodic values Table 9 2 Corrosion Rate and Environment Characterization CSC Both processes activation controlled e g sulfide film processes activation controlled Both processes activation controlled e g sulfide film g sulfide film 60mV 26mV Anodic process activation cathodic diffusion controlled e g aerated system Anodic process activati
51. ol indicates a potentially hazardous situation which if not avoided could result in death or serious injury This CAUTION symbol may be present on Control Product instrumentation and literature If present on a product the user must consult the appropriate part of the accompanying product literature for more information This CAUTION symbol indicates a potentially hazardous situation which if not avoided may result in property damage WARNING PERSONAL INJURY Risk of electrical shock This symbol warns the user of a potential shock hazard where HAZARDOUS LIVE voltages greater than 30 Vrms 42 4 Vpeak or 60 Vdc may be accessible Failure to comply with these instructions could result in death or serious injury ATTENTION Electrostatic Discharge ESD hazards Observe precautions for handling electrostatic sensitive devices Protective Earth PE terminal Provided for connection of the protective earth green or green yellow supply system conductor Functional earth terminal Used for non safety purposes such as noise immunity improvement NOTE This connection shall be bonded to protective earth at the source of supply in accordance with national local electrical code requirements Earth Ground Functional earth connection NOTE This connection shall be bonded to Protective earth at the source of supply in accordance with national and local electrical code requirements Chassis Ground Identifies a connection to the chassis or
52. on cathodic diffusion controlled anodic slope different e g multiphase system Severe anodic and cathodic diffusion limiting e g vapor phase B value indeterminate SmartCET CET5000 User Manual 11 06 11 06 The Pitting Factor The Pitting Factor is a measure of the overall stability of the corrosion process and is obtained from a measurement of the intrinsic current noise of the working electrode and comparing this measurement to the general corrosion current obtained from the LPR measurement e g general corrosion rate calculation General corrosion processes typically have low levels of intrinsic noise with the ratio of noise to the general corrosion current typically being lt 1 Pitting Factor lt 0 01 With the onset of instability pit initiation localized corrosion occurrence leads to increasingly higher levels of current noise with respect to the general corrosion current such that the Pitting Factor may reach a value of 1 The Pitting Factor can be viewed as the probability that the corrosion mechanism 1s localized Spontaneous changes in the environment may also cause the instantaneous value of the Pitting Factor to approach a value of in the short term however for localized corrosion the Pitting Factor will remain unstable and secondary evidence may be observed in terms of the overall stabilities of both the general corrosion rate estimate and the B value SmartCET uses electrochemical noise ECN to c
53. onsult with the factory for additional information la Disconnect probe and the corrosion rate should fall 1b Remove probe and physically check for electrode to electrode contact lc May be caused by the presence of conductive corrosion deposits e g iron sulfide B value very low 2 Use probe with smaller surface area 1 The electrodes could be too large Investigate using electrodes with a smaller area 2 Another possible cause may be due to an asymmetrical response of the electrodes for example due to crevice corrosion occurring on one of the electrodes The electrodes should be inspected in this case 3 All the variables being measured corrosion rate Pitting Factor B value and CMI are suspect and could be in error Consult with the factory for additional information 11 06 8 4 11 06 Troubleshooting Symptom Possible Cause Recommended Checks All corrosion variables are very unstable exhibiting one or more of the following 1 Corrosion rate unstable may drop to very low These systems are typically caused by high and variable corrosion rates in the process environment hard diffusion limiting processes and or electrode surface areas being too large for the application 1 Disconnect probe Corrosion values should return to baseline levels 2 Check with test cell transmitter should give a values 2 Pitting Factor low when corrosion rate high and vice versa 3 B val
54. or mm 14 2 inches 14 4 inches 14 6 inches 14 8 inches 15 0 inches or mm 15 2 inches 15 4 inches 15 6 inches 15 8 inches 16 0 inches or mm 16 2 inches 16 4 inches 16 6 inches 16 8 inches Table VI continued next page SmartCET CET5000 User Manual Selection 050 052 054 Specifications Availability P E ee key ee te w w A Specifications TABLE VI Insertion Length for Insertion Probes or Ring Flange Size Class Finish Insertion length inches 10 17 0 inches or mm 17 2 inches 17 4 inches 17 6 inches 17 8 inches 18 0 inches or mm 18 2 inches 18 4 inches 18 6 inches 19 0 inches or mm 19 2 inches 19 4 inches 19 6 inches 19 8 inches 23 0 inches or mm 23 2 inches 23 4 inches 23 6 inches 24 0 inches or mm 24 2 inches 24 4 inches 24 6 inches Table VI continued next page SmartCET CET5000 User Manual Availability Selection G P M kiki k IR IR IR 131 Aen emm Aen emm a ees emm t emm a Aen w emp emm ke Kemp e ber ess N Kemp e ber ess N Kemp e ber be N Kemp e ber be N Kent ber ess ess N e ber ess ess N e ber ber eme N ker ber ber ess N k k J J J J J J Jd eee AR Ce ee ee N e ber i es N Kemp ber ess ess N e ber ber eme N e ber ber ess N A Wen E gt Wen E 11 06 Specifications Availability TABLE VI Insertion Length for Insertion Probes or Ring Flange
55. rosion Rate and Environment Charactertzaton 44 Table 9 2 Corrosion Rate and Environment Character zaton 46 Fable IP Factor EE 47 TABE SAC MEV IUES ene ene oer eRe eon trey ae OnE oer nee eA eon Ey EAR TERY en rE eae eee ny 48 Figures Figure 1 1 SmanCE P5000 Transmitter mesonen eena ea aitalenre ace N l Fistte 2 1 Adjustable ENNER TE 4 Figure 2 2 Fixed Length 316 Stainless Steel Probe oooonoonccncooocococcnococccononononononnnonnonnnnnnnnnnnccnnnnnnnnnanononnnnos 4 Figure 23 EE 4 Figure 3 1 SmartCET5000 Transmitter and Probe Dimensions cccccccccnnnnnnnnnonononnnnnnnnncnnnnnnanananonononnonnos 16 Figure 3 2 Incorrect SmartCET Transmitter Installation reureu E E conan 17 Figure 3 3 Correct SmartCET Transmitter Installation oooooooooooooooooccnnccncnononanonononnnnnnnnnnonnnnnnnnnanan nono nnonoss 17 Figure 3 4 Correct smart 1 Pipeline Posta 17 Figure 925 smart Er Located EE 17 Figure 3 6 SmanCET Located in Bypass EES 18 Figure 3 7 SmartCET Mounted with Different Electrodes oococcccccnnnnnnnononononnnnnncncnnnnnnnanannn nono rocoso 18 Figure 3 8 Smart EI Installed in a Condensate Flash Tank 18 Figure 5 9 SmanC eT Mounted SEENEN EE 18 Figure gt 10 SmattC ET Mounted im Basket E TE 18 Figure 321s Plectrodes NEIE A A 19 EE OS O 20 Fiere 3413 Sately ee GE 21 Fiure o A Mounting Brack et EE A E eeuenctans 21 Figure 44 Transmitter WINNE ere e tages a aaa os 22 Pigure 4 2 Galvanic Isolation COMME CUINA 23 Figure
56. rosion rates the Pitting Factor may appear artificially high due to very low observed general corrosion rates consult factory for additional information Expected range 5 e to 60mV 0 005 to 0 06V Low values may be due to formation of surface films having redox behavior e g Iron sulfide The electrode essentially starts to become non polarizable High values predominantly may be due to diffusion limiting processes As the electrochemical processes become more diffusion limiting the B value may not achieve a stable value Applying the B value from this type of situation e g updating the default value is not recommended Consult with the factory for additional information Corrosion Expected range 0 Values are dependent on material and environment Mechanism SmartCET CET5000 User Manual 41 Troubleshooting Measuremen Range Comments t cla EE 8 4 1 SmartCET Use in Low Conductivity Environments SmartCET uses electrochemical techniques to analyze and measure corrosion in process environments The electrochemical measurements require a low level of ionic conductivity in the fluid to which the probe is exposed Some compensation may be required using special probe arrangements when dealing with extremely low conductivity environments Please consult with the Honeywell factory for additional information 42 SmartCET CET5000 User Manual 11 06 9 1 9 2 11 06 9 Appendix A CET5000M Overview of Te
57. safety regulations that apply to the measuring points are to be observed Maintenance safety The transmitter should always be mounted so that the safety warning label will at all times be visible to any employee or other person called upon to replace the electrodes or otherwise service the transmitter The label is on every safety bracket that comes with adjustable probes 11 06 SmartCET CET5000 User Manual iii About This Document Abstract This manual describes the installation and operation of the SmartCET 5000 Corrosion Transmitter Contacts World Wide Web The following lists Honeywell s World Wide Web sites that will be of interest to our customers Honeywell Organization WWW Address URL Corporate http www honeywell com Industrial Measurement and Control http www honeywell com imc Process Solutions http www honeywell com ps Telephone Contact us by telephone at the numbers listed below Region Organization Phone Number United States and Canada Honeywell 1 800 423 9883 Tech Support 1 800 525 7439 Service Iv SmartCET CET5000 User Manual 11 06 11 06 Symbol Definitions The following table lists those symbols that may be used in this document to denote certain conditions Symbol AA WARNING A CAUTION CAUTION A IF DB Definition This DANGER symbol indicates an imminently hazardous situation which if not avoided will result in death or serious injury This WARNING symb
58. ssociated with a general increase in the observed corrosion rate and lower levels of pitting factor lt 0 1 The general corrosion rate in the case of propagating pits often exhibits short term variation and is noticeably less stable than the case for general corrosion Pitting is often accompanied by increased variability in the B value With increasing degrees of pit propagation the CMI values will also tend to increase General Troubleshooting Procedures The CET5000 is designed to operate over a broad range of corrosion rates However most problems associated with the corrosion rate calculation arise when the actual corrosion rate is extremely high and there is likelihood that the instrument is approaching or exceeding its stated operating limits In some circumstances this can be remedied by using sensors with a smaller surface area Another factor to be considered is severe diffusion limiting or mass transport control of the corrosion processes In this case the B value determination may become difficult and erratic behavior with very high values may be observed Troubleshooting procedures that deal with this condition and general situations are shown in Table 8 2 Table 8 2 Troubleshooting Procedures Symptom Possible Cause Recommended Checks No 4 20 mA output Check voltage and compare it with Connect the correct voltage the specifications on the nameplate Measuring correct voltage but Check polarity on the terminals See Section
59. surement and Control 2500 W Union Hills Drive Phoenix Arizona 85027 SmartCET CET5000 User Manual 11 06 Notices Safety Instructions Designated Use The SmartCET 5000 1s a compact 4 20 mA corrosion transmitter used to detect general or localized corrosion in a wide range of industries The transmitter measures a general corrosion rate in mils per year or millimeters per year and provides an indicator of localized corrosion activity in the form of a Pitting Factor The readings are taken in real time and a new measurement is available approximately every seven 7 minutes Installation commissioning and operation The SmartCET 5000 transmitter has been designed to operate safely in accordance with current technical safety and relevant standards If installed incorrectly or used for applications for which it is not intended it 1s possible that application related dangers may arise For this reason the instrument must be installed connected operated and maintained according to the instructions in this manual by suitably trained personnel This manual must be read and understood and the instructions followed Modifications and repairs to the device are permissible only when they are expressly approved in this manual Operational safety Measurement systems used in a hazardous classified area must comply with all existing national standards It must be assured that all technical personnel are sufficiently trained All measurement and
60. tem If a replacement is required please contact your Honeywell representative to submit a replacement order 11 06 SmartCET CET5000 User Manual 37 Troubleshooting 8 1 8 2 38 8 Troubleshooting Overview This section describes various possible problems and the means to correct them A WARNING A If the pipe or vessel into which theSmartCET5000 is to be inserted is under pressure and or contains any hazardous substance such as steam caustic solutions acids toxins or other substances specified by OSHA as physical or health hazards the pipe or vessel must first be depressurized and any hazardous substance purged there from and appropriate lockout tagout procedures observed in accordance with Section 1910 147 of the OSHA Regulations beforeSmartCET5000 can be removed or the electrodes replaced Failure to follow these procedures may result in serious injury or death Diagnosis of Transmitter Health from Measurement Data The output from the SmartCET corrosion transmitter can provide insight into the health of the transmitter operation Table 8 1 shows the output expected for each variable when the transmitter is operating properly and the table also shows an indication when a probe short condition exists and when no probe is connected Table 8 1 Diagnosis of Transmitter Health Description Transmitter output variable Corrosion rate PV Across Across Maximum value Note 1 B value TV Unstable Unstable Unstable Note
61. the same metal properties as the piping or other components that might be susceptible to corrosion For example in applications where the pipe is made of stainless steel and the water pump s impeller is made of carbon steel the impeller will corrode faster than the pipe In this case it is advisable to select the electrodes to be the same material as the pump s impeller 16 SmartCET CET5000 User Manual 11 06 11 06 Installation Table 3 1 Mounting safety procedures and hints Incorrect Transmitter Location The transmitter should not be mounted in a pipe drop since the corrosive liquid may not be in full contact with the electrodes as shown in Figure 3 2 Correct Transmitter Location The transmitter should be mounted in the riser of a pipe near an elbow where the velocity is the highest In general SmartCET5000 should be mounted in pipes or tanks at locations of highest liquid velocity and constant immersion shown in Figure 3 3 Correct Pipeline Position SmartCET5000 can be located at any point on the pipeline but should always be immersed in the corrosive material as shown in Figure 3 4 Located in Tee SmartCET5000 can be located at any point on the pipeline but should always be immersed in the corrosive material as shown in Figure 3 5 Figure 3 2 Incorrect SmartCET Transmitter Installation Figure 3 3 Correct SmartCET Transmitter Installation Figure 3 5 SmartCET Located in Tee SmartCET CET5000 User Man
62. threaded rods 3 are too short for proper adjustment contact the factory for replacements 3 4 6 Mounting Bracket Installation 11 06 A mounting bracket is available for use with the remote mount version of SmartCET5000 The assembly and installation is shown in Figure 3 14 Please follow the assembly instructions below 1 To assemble locking clamps 5 on to mounting bracket 2 angle clamp 5 out slide tabs into holes and angle back in 2 Secure mounting bracket to sensor housing using two screws 6 provided FOR PIPE MOUNT 1 Position mounting bracket 2 on pipe 2 Using the U bolt 1 provided secure the mounting bracket 2 to the pipe using the lock washer 3 and nut 4 provided FOR WALL MOUNT 1 Secure mounting bracket 2 to the wall using a sturdy fastener not provided SmartCET CET5000 User Manual ec g GO Installation SAFETY BRACKET ASSEMBLY AND INSTALLATION TO TRANSMITTER e DIRECT MOUNT REMOTE MOUNT Figure 3 13 Safety Bracket Installation MOUNTING BRACKET ASSEMBLY AND INSTALLATION PIPE amp WALL MOUNT Figure 3 14 Mounting Bracket Installation 21 Wiring 4 Wiring 4 1 Transmitter Wiring Guide Before connection please note the following A e The power supply must be identical to the data on the nameplate e Switch off power supply before connecting up the device e Connect equipotential bonding to transmitter ground ter
63. tion resistance How does LPR distinguish polarization resistance due to corrosion versus general resistance of the solution How does an electrical model represent a corrosion process What makes corrosion look like an electrical system First SmartCET includes a measurement cycle where the solution resistance 1s measured and calculated This allows the resistance due to the solution to be quantified Corrosion comprises an anodic process and a cathodic process 1 e electrochemical processes that occur at anodic and cathodic sites on the metal surface When corrosion is occurring there is an increase of ionic flow between the anodic and cathodic sites 1 e Faradaic process A non corrosive system would not exhibit any ionic flow SmartCET applies a sinusoidal wave to facilitate an increase in flow The sinusoidal wave is a very slight DC voltage to enhance the anodic sites during one part of the wave and then enhance the cathodic sites in the other half of the wave SmartCET measures the polarization resistance during these cycles A heavily corroding system would be characterized by greater ionic flow The small DC voltage does not affect the naturally occurring corrosion process The anodic and cathodic sites exist on any of the three electrodes versus one electrode being the anode and the other the cathode It is the flow of current from the anodic site on one electrode to the cathodic site on the other electrode that is being measured T
64. tional data e g process variables however the more convenient and intended target for corrosion data access is connection to a distributed control system DCS or process knowledge system PKS 6 2 Variables and Definitions The following are examples of screens and variables that are available using SDC625 tool and a HART modem cl 5D0625 REVIEW Sele Device View Window Help le 0 a St Y SH dal x el 23 Main CH Online AL i milir 4 Device Setup AO 40 0000 miler J Process variables 0 0000 mir 3 Diag Service 0 01 s i No Alarm 3 Basic Setup Meth H D 5 0 0256 Y EVIE w A 4 75 cme WO E Comb Props 11600 0 cm3 s lyr Local Corrosion 0 0010 none 0 1845 Y 4 0927e 004 um C HART Beat Figure 6 1 Device Setup Variables 28 SmartCET CET5000 User Manual 11 06 Operation PV Units General corrosion rate can be expressed in either mil year 1 mil 0 00 linch or mm year URV and LRV Upper range value and lower range value for the corrosion rate For example URV 100 mil year LRV 0 000 The 4 mA would be the zero point at 0 mil year and 20 mA would correspond to maximum corrosion rate at 100 mil year in this case Damping Determines how quickly the output will change with respect to the input Because of long update time 7 minutes there is no need to increase damping Alarm Config Set the alarm preferences for certain corrosion rates 1 e 0 110 mil with this pull down menu The alarm activates w
65. tter Right click on Reset Device then select Execute and follow the prompts Reset Fact Default Resets the transmitter to factory default Right click on Reset Fact Default then select Execute and follow the prompts Reset Counter Average Resets Sample Count and PV Average to zero Right click on Reset Counter Average then select Execute and follow the prompts Status The status of the device Displays system errors if there are any present Toggle password Proprietary V Offset Voltage Channel Offset Typically 625 mV 6 Right click on V Offset and then select Edit to call up the change dialog box Highlight the value and change and then press Set I Offset Current Channel Offset Typically 625 mV 6 Right click on I Offset and then select Edit to call up the change dialog box Highlight the value and change and then press Set D A Trim Digital to Analog Trim Allows the calibration of a selected Analog Output with an external reference at the operating endpoints of the Analog Output Right click on D A Trim then select Execute and follow the prompts Scaled D A Trim Digital to Analog Scaled Trim Allows the calibration of the Analog Output with an external reference at the operating endpoints of the Analog Display Right click on Scaled D A Trim then select Execute and follow the prompts SmartCET CET5000 User Manual 11 06 6 4 3 6 4
66. ual 17 Installation 18 Located in Bypass Loop SmartCET5000 should be located downstream of a control valve for best performance and can also be located in the deadleg portion of a by pass Note that the transmitter located in the by pass leg should be mounted before the valve for best performance See Figure 3 6 This guarantees the electrodes will always be immersed in the corrosive material Mounted with Different Electrodes Installing SmartCET5000 with different electrode materials on the suction side of the pump will ensure monitoring of the pump impeller and the pipe as shown in Figure 3 7 Installed in a Condensate Flash Tank A condensate flash tank shown in Figure 3 8 is also a good application Mounted in Y Strainer The transmitter is shown in the blow down of a Y strainer in Figure 3 9 Mounted in Basket Strainer The transmitter is shown in the discharge side of the basket strainer in Figure 3 10 Figure 3 7 SmartCET Mounted with Different Electrodes Figure 3 8 SmartCET Installed in a Condensate Flash Tank Figure 3 10 SmartCET Mounted in Basket Strainer SmartCET CET5000 User Manual 11 06 Installation 3 4 Installation 3 4 1 Introduction A CAUTION A trained specialist must perform the necessary installation and commissioning of SmartCET5000 Recognized rules of the technology and setup requirements must be maintained both during and after installation Safet
67. ue and Upper Range Value for normal operating modes The units of this variable are always in percent AO1 Analog output in current 4 to 20 mA This shows the current value output 11 06 SmartCET CET5000 User Manual 31 Operation 6 4 2 32 PV Avg Average of the selected measurement over the number of measurement cycles since these were last cleared Sample Count The number of measurement cycles since these were last cleared Local Corrosion HART Secondary Measurement Output Stearn Geary HART Tertiary Measurement Output DLC HART Quarternary Measurement Output Diag Service Double click on Diag Service and the following screen appears E DC625 Diag Service Device View Window Help A a y i DH del y oi Main Item Valuefumis CH Online D Loop test 13 Device Setup E Reset Device Q Process variables D Reset Fact Default a Diag Service E Reset Counter Average Basic See l W Toggle Password eer gaere X Y Offset 624 505 mY ange and Units 3 625 400 mY 3 Detailed Setup 3 Corrosion Param y Scaled D A trim 3 Advanced Var CH REVIEW O HART Beat Figure 6 5 Diagnosis and Service Dialog Box Loop Test Allows you to manually manipulate the Analog output to a selected constant output value There are several selections available 4mA 20mA Other End Right click on Loop Test then select Execute and follow the prompts Reset Device Resets the transmi
68. ues unstable switching between 0 02 and gt 0 1 4 CMI unstable switching from very low value le 3 to large value e g gt 0 5 standard response 3 Electrode surface area could be incorrect for the application Contact a Honeywell corrosion specialist to review the application Corroding systems with real diffusion mass transport limiting scenarios are problematic monitoring situations Recommended Operating Conditions SmartCET utilizes electrochemical techniques that are applicable for a wide range of corrosive conditions The following table provides the applicable operating envelope for SmartCET with additional comments when the operating range is outside envelope Measuremen Range Comments t Corrosion rate 0 250 mpy dependent upon the electrode surface area typically in range of 1 to 10 cm Default URV setting is 100 mpy and the electrode area is 4 75 em Pitting Factor 0 001 to 1 Higher sensitivity at low corrosion rates may be achieved by using larger electrodes consult factory for additional information The higher corrosion rate range 1s achieved with appropriately sized electrodes e g small areas If symptoms listed in Table 8 2 occur the B value should be fully reviewed and analyzed before providing a corrosion rate estimate It is recommended to qualify the rate estimate against mass loss from electrodes consult factory for additional information With low cor
69. upon the actual corrosion rate 1t may be necessary to check or replace the electrodes COI every three months because the element might be too corroded or bent to give a correct Electrode Vito Gasket reading See Figure 3 11 E NOTE Clean the electrodes with rubbing l l alcohol or another similar material prior to Figure 3 11 Electrodes and Viton Gasket operation This establishes a reliable baseline for the transmitter electronics 11 06 SmartCET CET5000 User Manual 19 Installation 3 4 4 Probe installation Insert the probe into the pipe adjust the insertion to desired depth and apply land 1 4 turns from hand tight to provide the seal as shown in Figure 3 12 Please see safety bracket installation 1 16 instructions below 1 Hex Flat Some probes are supplied with an adjustable compression NPT fitting e g Swagelok With this fitting please follow the tightening sequence described next to ensure a tight seal 1 The Swagelok fitting should be held onto place with a plastic zip tie around the probe body The zip tie should be removed 2 Determine the depth that the probe should extend into the pipe Tighten the larger upper nut until the Figure 3 12 Probe Mounting tubing will not rotate freely by hand 4 Make a mark on the nut This mark will serve as a reference as the 6 o clock position 5 While holding fitting body steady tighten the large upper nut 1 1 4 turns to the 9 o clock pos
70. y requirements must be observed during all installation steps Ay WARNING If the pipe or vessel into which the SmartCET5000 is to be inserted is under pressure and or contains any hazardous substance such as steam caustic solutions acids toxins or other substances specified by OSHA as physical or health hazards the pipe or vessel must first be depressurized and any hazardous substance purged there from and appropriate lockout tagout procedures observed in accordance with Section 1910 147 of the OSHA Regulations before SmartCET5000 can be installed Failure to follow these procedures may result in serious injury or death 3 4 2 Overview SmartCET5000 consists of three basic components 1 A transmitter housing that contains the electronics and provides the 4 20 mA HART output signal 2 The probe There are two basic options direct mount and remote mount The remote mount probe is supplied with a 6 or 12 cable Note for flange inserted electrodes a probe may not be included 3 The electrodes This part of the probe will corrode in the same manner as the metal being investigated Note some custom probes may have electrodes that are integral to the probe assembly and will not be shipped loose as described m the next section 3 4 3 Electrode installation If the electrodes are shipped loose the electrodes must be installed hand tight Ensure that the Viton gaskets are in place prior to installing the electrodes Depending

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