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IM 12D08N05-01E

5-6

<5. MENU STRUCTURE COMMISSIONING>

5.6 mA output setup

The general procedure is to first define the function (control, output, simulate, off) of the

output and second the process parameter associated to the output.

Available process parameters depend on selected “sensor type” and “measurement

setup”.

Off :

When an output is set off the output is not used and will give an output of 4

Control :

A selection of P- PI- or PID control

Manual :

Static output required to maintain reset equilibrium state with setpoint

Direction :

Direct.

If the process variable is too high relative to the SP, the output of the

controller is increased (direct action).

Reverse.

If the process variable is too high relative to the SP, the output of the

controller is decreased (reverse action).

Output :

Linear or non linear table output.

The table function allows the configuration of an output curve by 21 steps

(5% intervals). In the main menu concentration can be selected to set the

concentration range.

Simulate :

Percentage of output span.

Normal span of outputs are limited from 3.8 to 20.5 mA

Fail safe :

Contact S4 is programmed as a fail-safe contact.

Burn Low or High will give an output of 3.6 resp. 21 mA in case of Fail situation.

NOTE

When leaving Commissioning, Hold remains active until switched off manually. This is to

avoid inappropriate actions while setting up the measurement.

Proportional control

Proportional Control action produces an output signal that is proportional to the difference

between the Setpoint and the PV (deviation or error). Proportional control amplifies the

error to motivate the process value towards the desired setpoint. The output signal is

represented as a percentage of output (0-100%).

Proportional control will reduce but not eliminate the steady state error. Therefore,

proportional Control action includes a Manual Reset. The manual reset (percentage of

output) is used to eliminate the steady state error.

NOTE

Any changes (disturbances) in the process will re-introduce a steady state error.

Proportional control can also produce excessive overshoot and oscillation. Too much gain

may result in an unstable- or oscillating process. Too little gain results in a sustained steady

state error.

Gain = 1/Range. [PV units]

Содержание SC450G

Страница 1: ...User s Manual IM 12D08N05 01E 5th Edition Model SC450G Conductivity Converter Style S2 ...

Страница 2: ... be referred to when reading pages where subsequent submenu screens are shown in the text Connection to the relevant submenu screen is indicated by a dotted line with an arrow Note that screens in the text are typical examples and actual screens may differ depending on the set parameters Connection to the relevant submenu screen is indicated by a dotted line with an arrow ...

Страница 3: ...aged by electrostatic discharge When servicing this equipment please observe proper procedures to prevent such damage Replacement components should be shipped in conductive packaging Repair work should be done at grounded workstations using grounded soldering irons and wrist straps to avoid electrostatic discharge WARNING Installation and wiring The SC450G converter should only be used with equipm...

Страница 4: ...n any change of specification construction or parts when the change does not affect the functions or performance of the product If the product is not used in a manner specified in this manual the safety of this product may be impaired Yokogawa is not responsible for damage to the instrument poor performance of the instrument or losses resulting from such if the problems are caused by Improper oper...

Страница 5: ... the circumstances of failure Process environmental conditions that may be related to the failure of the device A statement whether warranty or non warranty service is requested Complete shipping and billing instructions for return of material plus the name and phone number of a contact person who can be reached for further information Returned goods that have been in contact with process fluids m...

Страница 6: ...ator must follow the instructions laid out in this manual in order to avoid the risks for the human body of injury electric shock or fatalities The manual describes what special care the operator must take to avoid such risks CAUTION This symbol indicates that the operator must refer to the instructions in this manual in order to prevent the instrument hardware or software from being damaged or a ...

Страница 7: ... have any questions or you find mistakes or omissions in the user s manuals please contact our sales representative or your local distributor n Drawing Conventions Some drawings may be partially emphasized simplified or omitted for the convenience of description Some screen images depicted in the user s manual may have different display positions or character types e g the upper lower case Also no...

Страница 8: ... be used by a person with specialized knowledge n How to dispose the batteries This is an explanation about the EU Battery Directive This directive is only valid in the EU Batteries are included in this product Batteries incorporated into this product cannot be removed by yourself Dispose them together with this product When you dispose this product in the EU contact your local Yokogawa Europe B V...

Страница 9: ... 2 1 Preparation 3 4 3 2 2 Cables Terminals glands and conduit adapter 3 5 3 3 Wiring the power supply 3 7 3 3 1 General precautions 3 7 3 3 2 Access to terminal and cable entry 3 8 3 3 3 AC power 3 8 3 3 4 DC power 3 8 3 3 5 Grounding the housing 3 9 3 3 6 Switching on the instrument 3 9 3 4 Wiring the contact signals 3 10 3 4 1 General precautions 3 10 3 4 2 Contact outputs 3 10 3 4 3 Contact in...

Страница 10: ... 11 Calibration due at 4 3 4 3 12Projected calibration at 4 3 4 3 13HART ID 4 4 4 3 14Software revision 4 4 4 3 15HART Device revision 4 4 4 3 16Logbook 4 4 4 4 Information function 4 5 4 5 Setup calibration commissioning 4 5 4 6 Secondary primary value display switch 4 5 4 7 Navigation of the menu structure 4 6 5 MENU STRUCTURE COMMISSIONING 5 1 5 1 Configure sensor 5 1 5 2 Temperature setting 5 ...

Страница 11: ...enance of the sensor 7 1 7 3 Cleaning methods 7 2 7 4 LCD adjustment 7 2 8 TROUBLESHOOTING 8 1 8 1 Calibration check 8 1 8 2 Polarization check 8 1 8 3 Predictive maintenance 8 2 8 4 Prediction of cleaning needed 8 2 8 5 Poor calibration technique 8 2 8 6 Error displays and actions 8 2 APPENDICES APP 1 Appendix 1 Temperature compensation APP 1 Appendix 2 TDS readings APP 5 Appendix 3 Calibration s...

Страница 12: ...Blank Page ...

Страница 13: ...ument carefully and inspect it to ensure that it was not damaged during shipment If damage is found retain the original packing materials including the outer box and then immediately notify the carrier and the relevant Yokogawa sales office Make sure the model number on the nameplate affixed to the side of the instrument agrees with your order Example of the nameplate is shown below Figure 1 1 Nam...

Страница 14: ...ximum of 50 metres 150 feet with a BA10 junction box and up 10 metres standard sensor cable The SC450G is delivered with a general purpose default setting for programmable items see Chapter 5 While this initial configuration allows easy start up the configuration should be adjusted to suit each particular application An example of an adjustable item is the type of temperature sensor used The SC450...

Страница 15: ...he following tolerance is added to above performance mA output tolerance 0 02 mA of 4 20 mA Transmission signals General Two isolated outputs of 4 20 mA DC with common negative Maximum load 600Ω Bi directional HART HART 5 digital communication superimposed on mA1 4 20 mA signal Output function Linear or 21 step table for Conductivity Resistivity Concentration or Temperature Control function PID co...

Страница 16: ...centration and temperature Choice out of 13 preprogrammed matrixes and 2 100 points user programmable matrixes Calibration Semi automatic calibration using pre configured OIML KCl stanard tables with automatic stability check Manual adjustment to grab sample Logbook Software record of important events and diagnostic data readily available in the display or through HART Display Graphical Quarter VG...

Страница 17: ...ial environment Please use this instrument in the industrial environment only RoHS EN 50581 FM nonincendive approval suffix code Type U FM3611 Class I Div 2 Group ABCD T6 for Ta 20 to 55ºC Installation altitude 2000 m or less Category based on IEC 61010 II Note Pollution degree based on IEC 61010 2 Note Note Installation category called over voltage category specifies impulse withstand voltage Cat...

Страница 18: ...ag Plate UM U PM H5 AFTG ANSI AM20 SCT Universal mounting kit panel pipe wall Pipe and wall mounting hardware 2 Panel mounting hardware 2 Awning hood stainless steel 2 G1 2 2 1 2NPT 2 M20 2 Stainless steel tag plate 1 Notes 1 If the tag number is predefined with the purchase Yokogawa will inscript the tag plate with the specified tag number and program the tag number in the converter 2 Option code...

Страница 19: ... direct environment Access is possible to the cable glands see figure 3 1 The converter is not mounted in direct sunlight or severe weather conditions Maintenance procedures are possible avoiding corrosive environments The ambient temperature and humidity of the installation environment must be within the limits of the instrument specifications See chapter 2 3 1 2 Mounting methods Refer to figures...

Страница 20: ...d S4 F For power supply Adapter 49 1 93 G1 2 screw AFTG 1 2 NPT screw ANSI M20 screw AM20 Approx 55 2 2 144 5 67 144 5 67 20 0 79 20 0 79 121 5 4 78 24 5 1 Adapter for Conduit Work optional option code AFTG ANSI AM20 4x M6 screw depth 7 M20 cable gland When shipped not installed Grounding terminal M4 screw Hood Option code H5 some cutout on the left side cover Figure 3 1 Housing dimensions and lay...

Страница 21: ... mounting diagram Note When option code UM is specified universal pipe wall panel mounting kit are supplied same as option code U and PM both specified 2 ND pipe pipe mounting horizontal pipe mounting vertical wall mounting 15 0 6 35 1 38 13 0 51 4x Ф6 5 0 26 4x Ф10 0 4 200 7 87 70 2 75 154 5 6 08 80 3 15 80 3 15 Figure 3 3 Option U wall and pipe mounting diagram ...

Страница 22: ...ent 3 2 Wiring 3 2 1 Preparation Refer to figure 3 4 The relay contact terminals and power supply connections are under the screening shielding plate These should be connected first Connect the sensor outputs and HART communication connections last To open the SC450G for wiring 1 Loosen the four front plate screws and swing open the cover 2 The upper terminal strip is now visible 3 Remove the scre...

Страница 23: ...essed turn off power then on again The screen positioning will be accurate 3 2 2 Cables Terminals glands and conduit adapter SC450G A D A The SC450G is supplied with terminals suitable for the connection of finished wires in the size range of 0 13 to 2 5 sq mm 26 to 14 AWG The cable glands supplied will form a tight seal on cables with an outside diameter of 6 to 12 mm 0 24 to 0 47 inches Unused c...

Страница 24: ...ring Gland Close up plug Contents 6 X Gland M20 6 X Close up plug 6 X Gland nut M20 6 X O ring 17 12 X 2 62 EPDM 70 sh NOTE The glands must be installed properly to meet IP66 and NEMA 4X rating Use close up plug for unused glands NOTE Moisturize O ring before assembling Figure 3 5bHow to install cable glands l Adapter for conduit work When protect the cable with a conduit replace the M20 cable gla...

Страница 25: ...NT GLANDS REAR GLANDS Sensor output signals HART Contact output Contact output Power Contact input mA1 mA2 Figure 3 6 System configuration 3 3 Wiring the power supply 3 3 1 General precautions NOTE Make sure the power supply is switched off Also make sure that the power supply is correct for the specifications of the SC450G and that the supply agrees with the voltage specified on the textplate ...

Страница 26: ...ent on the supply to the instrument The 250 VAC fuses should be of the time lag type conforming to IEC127 WARNING Fuse replacement should be performed only by a qualified service personnel See Chapter 7 MAINTENANCE Fuse Fuse ratings Power supply Fuse type 12 24 VDC 10W max 2A 250V Slow 100 240 VAC 15VA max 0 5A 250V Slow 3 3 2 Access to terminal and cable entry Terminals 1 and 2 are used for the p...

Страница 27: ... user and to protect the instrument against interference the housing must always be connected to ground This has to be done by a large area conductor This cable can be fixed to the rear of the housing or by using the internal ground connections using a braided wire cable See figure 3 8 WARNING The minimum cross sectional area of the protective grounding wire should be 0 75 mm2 3 3 6 Switching on t...

Страница 28: ... unit s four contacts switches that can be wired and configured to suit user requirements Contact S4 is programmed as a fail safe contact Please refer to section 5 7 Contact output setup for functionality description l Alarm limits monitoring Contacts configured as ALARM can be energized when limits are crossed l Fail Contacts configured as FAIL will be energized when a fail situation occurs Some ...

Страница 29: ...power standard industry signals to peripherals like control systems or strip chart recorders Figure 3 6 3 5 2 Analog output signals The output signals consist of active current signals of 4 20 mA The maximum load can be 600 ohms on each Should be used the cable beyond 30 V AC It is necessary to use screening shielding on the output signal cables Terminal 63 is used to connect the shielding 3 6 Wir...

Страница 30: ...the identification numbers on the cable ends Figure 3 9 Sensor wiring diagrams 3 6 3 Other sensor systems To connect other sensor systems follow the general pattern of the terminal connections as listed below 11 and 12 Always used for temperature compensation resistor input 13 and 14 Normally used for the outer electrode 15 and 16 Used for inner electrode In case a 4 electrode measuring system wil...

Страница 31: ...2 13 14 15 16 17 BA10 WF10 EXA CONVERTER 11 12 13 14 15 16 17 Figure 3 10 Connection of WF10 extension cable and BA10 junction box Extension cable may be purchased in bulk quantities or in pre finished lengths In the case of bulk quantities cut to length then it is necessary to terminate the cable as shown below Termination procedure for WF10 cable 1 Slide 3 cm of heat shrink tube 9 x 1 5 over the...

Страница 32: ...IM 12D08N05 01E 3 14 3 INSTALLATION AND WIRING 3 cm heat shrink 9 cm remove insulation Figure 3 11a 3 cm cotton threads Figure 3 11b 11 12 17 15 16 13 14 Figure 3 11c ...

Страница 33: ...cs Pressing the button changes the display into a graphical mode in which the average measured value is shown on a time scale The Live value is also digitally displayed in a text box The time scale X axis and the primary value scale Y axis are set in the DISPLAY SETUP menu The full screen displays a trend of 51 points that represent the average of the selected time interval The converter samples t...

Страница 34: ...information about the device and lead to logbook data Next Next Next Next Figure 4 3 Detail screen 4 3 1 Actual mA1 The current output in mA of the first current output which is defined as mA1 The range and function of this mA output can be set in Routing Commissioning Output setup mA1 4 3 2 Actual mA2 The current output in mA of the second current output which is defined as mA2 The range and func...

Страница 35: ...nsation 4 3 7 Temp comp 2 The chosen temperature compensation method for the secondary measurement Note This does not imply two separate measurements There is the possibility to set two separate compensation methods so that two different stages of the same process can be monitored accurately An example is process cleaning fluid interface Routing Commissioning Measurement setup Temp compensation 4 ...

Страница 36: ...ion level is expressed by the first two characters of the filename The following files should be used when the HART Device revision level is 2 0201 aot 0201 fms 0201 imp 0201 sym 4 3 16 Logbook The SC450G contains several logbooks to store history information on events changed settings and calibrations The logbooks have been categorized to simplify the retrieval of this information Calibration wil...

Страница 37: ...cess previous events by selecting events page 1 to 10 4 4 Information function In this field an information sign a warning sign or a fail sign can appear Pushing this button the user gets detailed information about the status of the sensor or the instrument if applicable See troubleshooting chapter 8 for further details 4 5 Setup calibration commissioning By pressing the setup key you get access t...

Страница 38: ...IM 12D08N05 01E 4 6 4 OPERATION 4 7 Navigation of the menu structure RETURN KEY exit to previous display Main display Primary setup display Commissioning menu display Instrument in HOLD ...

Страница 39: ...en measuring unit is changed parameter of mA output setup and contact output setup will be cleared Set these parameter again refering to subsection 5 6 to 5 7 If you replace the sensor delete the predictive maintenance log first on the logbook configuration screen in section 5 12 If you do not proper prediction will not be possible using the sensor diagnostics You can check whether the log has bee...

Страница 40: ... must be compensated Normally 25 C 77ºF is used therefore this temperature is chosen as default value l Method TC In addition to the temperature coefficient calibration routine it is possible to adjust the compensation factor directly If the compensation factor of the sample liquid is known from laboratory experiments or has been previously determined it can be introduced here Adjust the value bet...

Страница 41: ...y only Concentration only NOTE Main parameter and or Measure determines the rest of the HMI menu structure Menu Parameter Default values Range min max Configure Sensor Cell constant 0 1 cm 1 0 005 cm 1 50 cm 1 Temp Comp Reference Temp 25ºC 77ºF 0ºC 32 0ºF 100ºC 211ºF Manual Comp Manual Temp 25ºC 77ºF 20ºC 3 0ºF 250ºC 482ºF Temp Coef T C methods 1 2 10 ºC 1 17 ºF 10 ºC 0 ºF 3 5 ºC 2 ºF T C methods ...

Страница 42: ...mits l Stabilization time During calibration the stability of the measurement is constantly monitored When the value is within a bandwidth of 1 over a period of the stabilization time the calibration is considered stable and the calibration may be completed l Calibration Interval A user defined interval in which a new calibration should take place If the interval is exceeded the instrument will gi...

Страница 43: ...ration only Enter Measurement setup Temperature settings Temp Compensation Calibration settings Concentration Measure Conductivity only Configure sensor Menu Parameter Default values Range min max Calibration Air adjust 10 00 μS 0 μS 20 μS c c high 120 100 120 c c low 80 80 100 Stabilization time 5 s 2 s 30 s Calib interval 250 days 1 day 250 days Concentr Table Table See appendix ...

Страница 44: ...span Normal span of outputs are limited from 3 8 to 20 5 mA Fail safe Contact S4 is programmed as a fail safe contact Burn Low or High will give an output of 3 6 resp 21 mA in case of Fail situation NOTE When leaving Commissioning Hold remains active until switched off manually This is to avoid inappropriate actions while setting up the measurement l Proportional control Proportional Control actio...

Страница 45: ... 100 PID control mA1 Setpoint 250 0 μS cm inf inf PID control mA2 Setpoint 25ºC ºF inf inf PID control mA1 Range 50 0 μS cm inf inf PID control mA2 Range 10ºC ºF inf inf PID control mA1 Manual Reset 0 0 100 PID control I time 3600 sec 1 sec 3600 sec PID control D time 0 sec 0 sec 60 sec Linear mA1 0 Value 0 S cm inf inf Linear mA2 0ºC ºF inf inf Linear mA1 100 Value 500 0 μS cm inf inf Linear mA2 ...

Страница 46: ...f the controller is outside the control range less than 5 or greater than 105 the I part is frozen l Derivative control The control acts on the slope rate of change of the process value thereby minimizing overshoot It provides rate feedback resulting in more damping High derivative gains can increase the rising time and settling time It is difficult to realize in practice because differentiation l...

Страница 47: ...inf inf Range 50 0 μS cm inf inf Manual Reset 0 0 100 I time 3600 s 1 s 3600 s D time 0 s 0 s 60 s Duty cycle DC period time 10 s 1 s 1800 s Pulse freq Max pulse freq 70 p min 1 p m 120 p m mA1 simulate Expire time 0 0 s 0 s 1800 s Alarm S1 Setpoint 450 0 μS cm high inf inf Alarm S2 Setpoint 50 0 μS cm low inf inf Alarm S1 Hysteresis 4 500 μS cm 0 0 μS cm inf Alarm S1 Delay time 0 2 s 0 s inf Alar...

Страница 48: ...r a percentage of duty cycle can be entered DC period time 6 Off Switch is not used 7 USP USP EU limits for WFI power on power on power down normal opened contact activated S1 S2 S3 S4 Above table shows contact output status between common to NO l Configure hold Hold is the procedure to set the outputs to a known state when going into commissioning Du ring commissioning HOLD is always enabled out ...

Страница 49: ...IM 12D08N05 01E 5 11 5 MENU STRUCTURE COMMISSIONING S2 S3 S4 Similar structure to S1 Menu Parameter Default values Range min max Simulation Percentage 50 0 100 ...

Страница 50: ...pulse frequency or duty cycle with small interval times the lifetime of these contact should be observed On Off control is preferred over Pulse duty cycle 5 8 Fail A fail contact is energized when a fail situation occurs Fail situations are configured in section 5 12 For SOFT Fails the contact and the display on LCD are pulsating For HARD Fails the contact and the display on LCD are energized cont...

Страница 51: ...it exceeded Warn Warn Warn Off Off Enter Errors 2 3 Temperature too high Temperature too low Polarization detect Calibr time exceeded USP limit exceeded Warn Warn Warn Off Off Menu Parameter Default values Range min max Errors1 3 Cond High Limit 250 mS 0 ms 2 000 S Cond Low Limit 1 000 μS 0 00 μS 2 000 S Res High Limit 4 Ω 0 10 MΩ Res Low Limit 1 MΩ 0 10 MΩ ...

Страница 52: ...endent of what is being measured The display shows this error when the water quality exceeds the WFI conductivity limits as set in stage 1 2 We have introduced uncompensated conductivity in the DISPLAY menu In the LCD display the user can read the temperature and the raw conductivity to compare his water quality with the WFI table 3 We have added a USP function to the contact allocation The contac...

Страница 53: ...IM 12D08N05 01E 5 15 5 MENU STRUCTURE COMMISSIONING Menu Parameter Default values Range Low High HART Network address 0 0 15 ...

Страница 54: ...red The process variable is not reliable WARN the process variable processes by the converter is still reliable at this moment but maintenance is required in the near future l Flashing Fail flag in main display FAIL gives a flashing FAIL flag in the main display The contact configured as FAIL Commissioning output setup will be energized continuously All the other contacts are inhibited Exception i...

Страница 55: ...MMISSIONING Menu Parameter Default values Range Low High Y axis Conduct low 0 μS cm inf inf Conduct high 500 μS cm inf inf Conduct 2 low 0 μS cm inf inf Conduct 2 high 500 μS cm inf inf Temp low 0ºC 32ºF inf inf Temp high 100ºC 212ºF inf inf ...

Страница 56: ...d user defined defaults After a load default the instrument will reset The following parameters are not included in the defaults 1 X axis timing 2 Auto return 10 min disabled 3 Tag 4 Passwords 5 Date and time 6 Language 7 The contents of all logbooks 8 HART parameters address tag descriptor message l Tag A tag provides a symbolic reference to the instrument and is defined to be unique throughout t...

Страница 57: ...creen Auto return will cause the main display to go to default setting See also 4 6 Secondary to Primary Value display Switch NOTE Configuration possibilities in the main and secondary display lines are determined by the choices made in the menu measurement Measurement setup Measurement l Additional text Each process value can be given an additional text containing up to 12 characters per text Thi...

Страница 58: ...Blank Page ...

Страница 59: ...or which only the nominal cell constant is known or recalibrate a sensor that has been changed or damaged in the course of operation Choose 1st or 2nd compensation to suit the calibration solution used The solution should be prepared or purchased meeting the highest standards of precision available Allow the sensor to reach stable readings for both temperature and conductivity before adjusting to ...

Страница 60: ...justed to agree with the reading zero offset calibration only For best accuracy this should be done as near to the normal operating temperature as possible 6 7 Operation of hold function during calibration SC450G has a HOLD function that will suspend the operation of the control alarm relays and mA outputs During calibration the user may choose to enable HOLD so that the output signals are frozen ...

Страница 61: ...ows as a low side error at higher conductivity A dirty sensor will often read perfectly at low conductivity Wet calibration tests are best done towards the top of a sensor s range If the system responds correctly to the highest trip point all is well ...

Страница 62: ...Blank Page ...

Страница 63: ...art numbers l Battery The SC450G converter contains a logbook feature that uses a clock to provide the timings The instrument contains a lithium cell battery to support the clock function when the power is switched off The cell has an expected working life of 10 years Should this cell need to be replaced contact your nearest Yokogawa service center l Fuse There is a circuit board mounted fuse prot...

Страница 64: ... display may fade The contrast can be adjusted using the potentiometer on the backside of the LCD board This adjustment must be done only by Yokogawa s service personnel The position is shown on the picture below For units manufactured after July 2007 the potentiometer is placed behind the little hole in the LCD bracket as shown in Figure 3 4 For units manufactured between April 2006 and April 200...

Страница 65: ...be checked l For FAIL when the diagnostics have confirmed a problem and the system must be checked This button gives access to a status report page where The most applicable error will be displayed No errors is displayed during proper operation l Explanation Description or error message and possible remedies l Advanced troubleshooting Error code screen that is used in conjunction with the service ...

Страница 66: ...diagnostic tool The significance of this error message is to require the user to improve his calibration technique Typical causes for this error are attempting to calibrate dirty sensors calibration solution contamination and poor operator technique 8 6 Error displays and actions All errors are shown in the Main Display screen however the SC450G makes a distinction between diagnostic findings The ...

Страница 67: ...ction based on a Sodium Chloride solution This is suitable for many applications and is compatible with the NaCl compensation functions of typical laboratory or portable instruments SC temperature compensation Table 1 NaCl compensation according to IEC 60746 3 with Tref 25 C T Kt α T Kt α T Kt α 0 0 54 1 8 60 1 76 2 2 130 3 34 2 2 10 0 72 1 9 70 1 99 2 2 140 3 56 2 2 20 0 90 2 0 80 2 22 2 2 150 3 ...

Страница 68: ...ref K2 T1 Tref K1 K2 K ref 1 α T1 Tref 1 α T2 Tref K1 1 α T2 Tref K2 1 α T1 Tref K1 α T2 Tref K2 α T1 Tref K2 K1 Where T1 T2 liquid temperature C K1 conductivity at T1 C K2 conductivity at T2 C Figure 1 Conductivity Calculation example Calculate the temperature co efficient of a liquid from the following data Conductivity 124 5 µS cm at a liquid temperature of 18 0 C and a conductivity 147 6 µS cm...

Страница 69: ...e SC450G will do the rest By following the routing Commissioning Measurement setup Temp compensation Matrix you gain access to the Matrix selection area Matrices are available for the common mineral acids and bases In addition Ammonia and Morpholine are included In short by using the matrix method specialist compensation is available for the majority of applications in the power industry water tre...

Страница 70: ...that is entered the following values become mandatory to enter Cx SxTr SxT1 SxT10 and Tx Concent Tref T1 Tx T10 Sol1 C1 S1Tr S1T1 S1T10 Solx Cx SxTr SxT1 SxTx SxT10 Sol10 C10 S10Tr S10T1 S10T10 The matrix can be cleared before entering new values Next new matrix values can be entered as described above The SC450G can interpolate the matrix During this process it will check if the matrix is complet...

Страница 71: ... 0 7 up to a conductivity of 500 µS cm At a conductance of approximately 3000 µS cm the range would be from 0 5 and 1 0 The SC450G measures conductivity This value can be used to display TDS values on the main display One should use the additional concentration table Please refer to section 5 5 for concentration measurement The unit for the TDS reading can be set to ppm or ppb Appendix 3 Calibrati...

Страница 72: ...n is better A slightly contaminated sensor may read perfectly at lower conductivity but show significant errors at higher values This is caused by the early onset of polarization the factor that limits the upper range of the sensor in any case Polarization is seen in contaminated sensors and it is for this reason that there is a sophisticated polarization check built into the SC450G Details of thi...

Страница 73: ...ctrode sensor This sensor is the first choice for pure and ultra pure water measurements From 0 055µS cm up to 100µS cm this is a perfect choice The measuring range extends to at least 1000µS cm but there are better choices in that range Almost exclusively used in flow fittings and sub assemblies FF40 and FS40 The SX sensors are screwed or flanged direct into the process pipework or tanks SC4A S T...

Страница 74: ...04 cc 10 cm 1 2 electrode sensor This sensor is in the program for historical reasons It makes little sense to select this sensor for new applications It was used mostly for process water and light process solutions The operating range can be 1to 100 mS cm with higher readings having a very high risk of polarization The SC42 EP18 or the SC42 EP08 4 el sensors covers these ranges with much greater ...

Страница 75: ...ant X X is mentioned on the text plate of the sensor SC210G When the nominal cell constant is 5 cm 1 and the deviation CORR 1 1 is mentioned The cell constant to be entered is calculated as follows 5 5 x 1 1 100 4 945 Enter the cell constant of 4 945 cm 1 Appendix 6 HART HHT 275 375 menu structure Those items with asterisks appear or display each content variously depending on the selection of sen...

Страница 76: ...rc Zoom device Serial number 1 Software Revision Device Revision DD Revision Logbook Sensor data Calibration Sensor Pred Maint Output data Settings mA1 mA2 S1 S2 S3 S4 Most appl Error Calibration Error description remedy CC Calibration SC1 CC Calibration SC2 Air Calibration Sample calibration SC1 Sample calibration SC2 TC Calibration SC1 TC Calibration SC2 Temp Calibration Hold Instrument Hold Ins...

Страница 77: ...r to mA1 Type control func Process parameter PID SP PID Rng PID dir PID MR PID I time PID D time Burn Expiry time Type output func Process parameter Lin 0 Lin 100 Burn Damping time Type simulate func Sim Perc Type Off S1 setup S2 setup similar to S1 S3 setup similar to S1 S4 setup similar to S1 Type control func Process parameter Expiry time PID SP PID Rng PID dir PID MR PID I time PID D time Anal...

Страница 78: ...ag Distributor Model Device information Date Descriptor Message Poll addr Num resp preams Review Model Distributor Write protect Manufacturer Dev id Tag Descriptor Message Date Universal rev Fld dev rev Sofware rev Poll addr Num req preams 1 A part of the HART device ID descriptor 2 Make sure to exit cancel the loop test before proceeding to a measurement NOTE HART protocol DD files can be downloa...

Страница 79: ...IM 12D08N05 01E APP 13 APPENDIXES Appendix 7 Control drawing for FM approval ...

Страница 80: ...Blank Page ...

Страница 81: ...ble assembly shield 6a A1108EF 1 Fuse AC version 1 pcs 6b A1111EF 1 Fuse DC version 1 pcs 7 K9676BE 1 Cover assembly without screws and hinge pins 8 K9676BU 1 Cable glands assembly 6 pcs M20 9 K9676DL 1 Stainless tagplate blank 10 K9676BT 1 Screw assembly to fix cover M4 screws washer O ring hinge pins 11 K9676CM 1 Housing assembly polyurethan baked finish 12 Adapter assembly for conduit work K917...

Страница 82: ...ting Hardware Option code PM Item Part No Qty Description 1 K9171SS 1 Mounting Set U 2 Y9608KU 4 Screw 3 D0117XL A 1 U Bolt Assembly 4 K9171SY 1 Plate 5 K9171SX 1 Bracket 6 K9171ST 1 Mounting Set PM 7 Y9520LU 2 Screw 8 K9171SW 2 Bracket 9 Y9608KU 4 Screw 10 K9676BA 1 Awning hood assembly H5 UNIVERSAL MOUNT SET Option code UM includes both U and PM ...

Страница 83: ...ved and changed because external dimensions for awning hood H5 conduit adapter AFTG ANSI AM20 added p7 Figure 3 4 title modified p8 conduit adapter work added to subsection 3 2 2 p9 to 11 Layout changed descriptions after conduit adapter work moved p16 Subsection 4 3 13 Serial number HART ID changed p20 to 35 Layout changed illustration of submenu screen placed on appropriate page p41 some error c...

Страница 84: ...IM 12D08N05 01E ii n Published by Yokogawa Electric Corporation 2 9 32 Nakacho Musashino shi Tokyo 180 8750 JAPAN http www yokogawa co jp an n Printed by KOHOKU PUBLISHING PRINTING INC ...

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