User Manual SONO-FLANGE
Contents
1. eee 1 BREE ee ee eee ee eee e e c e e T c 80 700 Radartime in Picoseconds 200 300 400 500 100 ir in MKO y 17 34 3 1 1 Creating a linear Calibration Curve for a specific Material The calibration curves Cal1 to Cal15 can be easily created or adapted for specific materials with the help of SONO CONFIG Therefore two measurement points need to be identified with the probe Point P1 at dried material and point P2 at moist material where the points P1 and P2 should be far enough apart to get a best possible calibration curve The moisture content of the material at point P1 and P2 can be determined with laboratory measurement methods oven drying It is to consider that sufficient material is measured to get a representative value Under the menu Calibration and the window Material Property Calibration the calibration curves CAL1 to Cal15 which are stored in the SONO probe are loaded and displayed on the screen takes max 1 minute With the mouse pointer individual calibration curves can be tested with the SONO probe by activating the button Set Active Calib The measurement of the moisture value MoistAve with the associated radar time tpAve at point P1 and P2 is started using the program SONO CONFIG in the sub menu Test and Test in Mode CA or CF see Quick Guide for the Software SONO CONFIG Step 1 The radar pulse t2. 4 AUS arem 2 n The following parameter setting in mode CA fits a high pass filtering for bridging material gaps MKO 11 34 Average Mode under C CA Cuclic Average Average Parameters Average Time s EMEN Filter Upper Limit Offset 20 Filter Lower Limit Offset 200 Upper Limit Keep Time mo Lower Limit Keep Time Bo The Filter Upper Limit is here deactivated with a value of 20 the Filter Lower Limit is set to 296 With a Lower Limit Keep Time of 5 seconds the average value will be frozen for 5 seconds if a single measurement value is below the limit of 296 of the average value After 5 seconds the average value is deleted and a new average value building starts The Keep Time function stops if a single measurement value lies within the Limit values 2 1 3 Mode CC automatic summation of a moisture quantity during one batch process Simple PLCs are often unable to record moisture measurement values during one batch process with averaging and data storage Furthermore there are applications without a PLC where accumulated moisture values of one batch process should be displayed for a longer time to the operating staff Previously available microwave moisture probes on the market show three disadvantages 1 Such microwave probes need a switching signal from a PLC This increases the cabling effort 2 Time delays can occur during the summation time with a trigger signal This is pa
3. and the window Analog Output the analogue outputs of the SONO probe can be configured see Chapter Analogue outputs Analog Output Output Current 0 20 4 20m C 20 0m C 20 4m Moist Temp C Moist Conduct Moist Temp Conduct Output Channels Moisture Range Temperature Range EC Trime mS Maximum 25 Set Maximum 100 Set C 920 0 50 0 Set Minimum 0 Set Minimum Simulate Close IMKO 29 34 6 1 4 Selection of the individual Calibration Curves In the menu Calibration and the window Material Property Calibration the calibration curves CAL1 to Cal15 which are stored in the SONO probe are loaded and displayed on the screen takes max 1 minute With the mouse pointer individual calibration curves can be activated and tested with the SONO probe by activating the button Set Active Calib Furthermore the individual calibration curves CAL1 to Cal15 can be adapted or modified with the calibration coefficients see Chapter Creating a linear calibration curve Material Property Calibration X Calibration Item Set Active Calib Default Calibration Item Please select one calibration fram Call ta Call5 to operate 00000 Ma Calibration 00000 00000 00000 1 A 06035 Unitversal S and Mix 06035 06000 06000 2 06040 Lime Sand Linear 06040 06000 06000 3 06041 Cement Powder 06041 060
4. ulo inactiv For very difficult applications where it is not certain which mode is the best we recommend to select mode CA with averaging time 1 second With help of the software SONO CONFIG a data record can be stored directly during process conditions After forwarding this data set to IMKO we would be pleased to be at your disposal for finding the best suitable working mode MKO y 14 34 3 Calibration Curves SONO FLANGE is supplied with a universal calibration curve for sand Cal1 Universal sand Gravel Grit A maximum of 15 different calibration curves CAL1 Cal15 are stored inside the SONO probe and can optionally be activated via the program SONO CONFIG A preliminary test of an appropriate calibration curve Call 15 can be activated the menu Calibration and in the window Material Property Calibration by selecting the desired calibration curve Cal1 Cal15 and with using the button Set Active Calib The finally desired and possibly altered calibration curve Cal1 15 which is activated after switching on the probes power supply will be adjusted with the button Set Default Nonlinear calibrations are possible with polynomials up to 5th grade coefficients mO m5 IMKO offers more suitable calibration coefficients for different materials These calibration coefficients can be entered and stored in the SONO probe by hand with the help of SONO CONFIG The charts Cal 1 15 in th
5. 5 b t Ave Radartime 4 05 Picoseconds The coefficient m is calculated from the slope of the curve Cal14 Delta y 25 0 Coefficient m4 0 0581 Deltax 500 70 The coefficient mg is the offset on the y axis at x 0 Coefficient mg Y2 m4 X2 25 0 0581 500 4 05 IMKO MEROMOOUTEOPAE Y G 19 34 Uiajs c 05 10 89001 ONOS pue 5 Kejdsiq 031 DIE A M OIHYA ONOS XIIN ONOS uoquiqie jenpuipul uv gxeu ai o endi eyduiexe 204 epeEorunuduoo pus Od sgud ONOS j33euuo2 ve noA gs Ws 94i Aanb Apsee aq ug eqo d 21 SUSU nipe 014NO2 ONOS eigemos 261 uote uico eiu Q wl OIHVA ONOS 95 epow ejeudoadde ve 0 E On auo seqoxd NOS isnByuos 2 0 ajqesod si 5 2 M Sop P OWs ONOS 4 Connectivity to SONO Probes M3IA ONOS 20 34 4 1 1 Connection Plug SONO FLANGE is supplied with a 10 pole MIL flange plug Assignment of the 10 pole MIL plug and sensor cable connections Sensor Connections Lead Colour Lead Colour OV PowrSupl Blue p 1 Analogue Positive Moisture Green E h Analogue Return Line Moisture 00 _ _ e rss Bro
6. TT TE ET TT eee Pee BRE A ee eee ee eee See ee eee EE Be RR UE ee ee eee eee BREE BE Be eek DERE eRe BRR ER RR eee Ue ee eee tt JS BRE BS BRE Be eRe See ee eee NE eee eee Be LL LL LLLLL LL CE Ee eee BRR Ee UR eee A ee eee eee ERR REE GRRE Eee 4 ee eee Ee eee eee eee VE eee eee LLL A BREE ERE N Eee 11 74 URE LS Ee LLL CLLLCLLLLIM eee Vee T ATT Be BS Pee es AS LL CER Ree Ieee DI ID ml mE T ee wl ll eee eee T ee Sees ee SRR Ue LS II Se BE BER a l Lt ttt tt ee y
7. Technical Data SONO FLANGE 0 32 MKO 4 34 1 Instrument Description SONO FLANGE 1 1 1 The patented TRIME TDR Measuring Method The TDR technology Time Domain Reflectometry is a radar based dielectric measuring procedure at which the transit times of electromagnetic pulses for the measurement of dielectric constants respectively the moisture content are determined SONO FLANGE consists of a high grade stainless steel casing with a wear resistant sensor head with ceramic window An integrated TRIME TDR measuring transducer is installed in the electronic housing A high frequency TDR pulse 1GHz passes along wave guides and generates an electro magnetic field around these guides and herewith also in the material surrounding the probe head Using a new patented measuring method IMKO has achieved to measure the transit time of this pulse with a resolution of one picosecond 1x10 consequently determine the moisture and the conductivity of the measured material The established moisture content as well as the conductivity respectively the temperature can either be uploaded directly into a SPC via two analogue outputs 0 4 20 mA or recalled via a serial RS485 interface 1 1 2 TRIME compared to other Measuring Methods In contrary to conventional capacitive or microwave measuring methods the TRIME technology Time Domain Refle
8. be measured it is necessary that such material fits tight to the probe s surface of the SONO FLANGE It is recommended to install the probe head with an angle of about 5 so that the free flowing material is pressed constantly to the probe s surface The following drawing shows the installation principle IMKO y 25 34 5 4 Installation of SONO FLANGE inside a Screw Conveyor The installation of SONO VARIO inside a screw conveyor ensures optimum conditions concerning material flow and material density because the measured material is not loose but is condensed by the screw SONO FLANGE Cut out of the spiral The SONO probe can be installed along the screw conveyor It is recommended to attain a mounting angle with a limit value of 30 to ensure that enough material lies above the probe s surface Optionally the spiral conveyor can be cutted so that a plug formation ensures that enough materials lies above the probes s surface lt is also possible to install the probe at the end of the screw conveyor where it is also ensured that enough material in a backlog with a relative constant density lies above the probe s surface It is recommended to use measurement mode CF if the spiral is cutted out of if the probe is installed at the end of the screw conveyor Furthermore it is possible to install the SONO probe in the middle of the screw conveyor without a cut out of the spiral Here it is necessary to set approp
9. ht 1544 41 1 04735 Do Measurement Calculate Coetts Coetts gt Probe Close IMKO 4 32 34 7 Technical Data SONO FLANGE SENSOR DESIGN SONO FLANGE Casing Electronic Head High Grade Steel V2A 1 4301 Casing Probe High Grade Steel V4A Abrasion Surface Highly abrasion resistant aluminium oxide ceramic MOUNTING SONO FLANGE Probe Head Dimension 47 x 55mm Diameter x Length SONO FLANGE Electronic Housing 38 x 155mm Diameter x Length MEASUREMENT RANGE MOISTURE The sensor measures from 0 up to the point of material saturation Measurement ranges up to 100 moisture are possible with a special calibration MEASUREMENT RANGE CONDUCTIVITY The sensor as a material specific characteristic value delivers the radar based conductance EC TRIME Radar based Conductance SONO FLANGE conductivity range 0 40mS cm conductivity MEASUREMENT RANGE TEMPERATURE Measurement Range 0 C 70 C A temperature sensor is installed into the SONO FLANGE s electronic housing which establishes the casing temperature beneath the probe head The temperature can optionally be issued at the analogue output 2 As the TRIME electronics operates with a power of approximately 1 5 W the probe casing does slightly heat up A very precise measurement of the material temperature is therefore only possible to a certain degree and only if the electronic housing is completely surrounded by the material The material temperatu
10. 00 06000 Set Default Calib 4 06042 Wood Pellets 06000 06000 5 06043 Wheat 06043 06000 06000 M 06044 Flour 06044 06000 06000 Redes enge 06045 Suger 06045 06000 06000 Universal S and Mis B 4 Brown coal granulate DEHE 000 000 9 7 7 06000 06000 Get 10 06048 Expanded clay 06048 06000 06000 11 06049 Lightly sand 06049 000 000 Material Coeff Temp Coetts 12 06050 Sewage sludge 06050 06000 06000 13 06054 Ceramic Suspension 06054 000 000 9 5 14 06058 Aj ta Water 06058 06000 06000 0 05 15 06053 V arin15 06053 06000 06000 0 0 0 m5 Set Save Head The desired and possibly altered calibration curve Cal1 15 which is activated after switching on the probes power supply can be adjusted with the button Set Default Calib The calibration name can be entered in the window Calibration Name The coefficients mO to m1 for linear curves and mO to m5 for non linear curves can be entered and adjusted directly by hand with the buttons Set and Save Possible are non linear calibration curves with polynomials up to fifth order 0 5 Attention Use dot as separator for mO to m5 not comma 30 34 6 1 5 Test run in the respective Measurement Mode In the menu Test and the window Test in Mode CA or CF the measured moisture values MoistAve Average of the SONO probe are displayed on the screen and can be paral
11. 2 Analogue Output 0 10V with a Shunt Resistor 21 4 1 3 Connection diagramm with 21 Installation of the 22 5 1 Mechanical dimensions SONO FLANGE ccccccccccceeeesseeeeeeeeeeeeeseeeseeeeeeeeessaeeaeeeeeeeeeseaas 23 5 2 Possible dimensions of a mounting 24 5 3 Installation of SONO FLANGE with free flowing materials 24 5 4 Installation of SONO FLANGE inside a Screw 25 5 5 Connection of the RS485 to the SM USB Module from 26 Quick Guide for the Commissioning Software SONO CONFIG 27 6 1 1 Scan of connected SONO probes on the serial interface 27 6 1 2 Configuration of Measure Mode and serial SONO interface 28 6 1 3 Analogue outputs of the SONO probe 28 6 1 4 Selection of the individual Calibration Curves 29 6 1 5 Test in the respective Measurement Mode 30 6 1 6 Measure run in Datalogger Operation esses 30 6 1 7 Basic Balancing in Air and 31
12. 22 7 51 1 00 91 0 910 16 03 55 114032014 25 06 5000 91 1 222 9 7 45 7 5 7 6 8 04 910 9140 16 03 54 11 03 2014 7 5 25 00 50 00 91 07 3 222 7 51 7 5 5 1 00 910 912 16 03 53 11 03 2014 26 00 50 o0 0 93 3 221 23 7 51 7 7 51 1 00 10 910 16 03 52 11 03 2014 26 50 00 91 07 22 15 7 45 7 5 7 46 7 51 9 0 910 16 03 51 1140 2014 7 26 OK 50 06 1 1 3 222 6 7 5 7 5 100 9 0 910 16 03 50 11493204 7 6 26 50 00 91 1 222 746 7 0 7 45 7 45 3LO 900 10 03 99 11 05 2014 20 00 0 00 91 29 2 7 45 7 9 AC L 00 10 S20 15 03 88 11932014 7 57 26 00 2 00 91 21 3 23 0 7 98 TAE 1 00 wo 910 10 03 97 1143 2014 7 25 70 91 1 gt 222 55 7 45 7 25 7 4 41 00 91 0 6 03 96 113 2014 25 00 50 00 1 14 222 63 7 45 7 9 7 52 7 52 92 0 16 03 45 11 03 2014 25 7 21 1 3 22 5 7 46 5 1 00 51 0 16 03 44 11420 2014 25 70 1 14 3 222 52 7 45 8 05 1 00 16 03 43 11 03 2014 25 7 20 1 14 22 36 7 45 7 45 7 45 31 0 16 03 42 1140 2014 iw 91 1 3 7 93 1 00 16 03 43 12 03 2014 0 0 91 07 21 6 7 46 Ae 7 46 16 03 40 11 02 2014 7 4 795 90 91 07 3 7 46 7 9 7 1 00 16 03 39 114032014 91 07 3 7 4 7 6 1 00 Following measurement values are displayed on the screen MoistAve Moisture Value in 96 Average MatTemp Temperature EC TRIME Radar based Conductivity EC TRIME in dS m or mS cm TDRAve TDR Signal Level for special applications DeltaCount Number of single measurements which are used for the averaging tpAve Radar time average which corresp
13. E eee htt tt tT I SRR Ty EE ae LL fy LET I ET I EN Ti Tey 6690600 2r EEE eee eee eee eee eee LI ELIT IL I Sii TTT TE TT LLL EL LE LOL ET 11111111 FH HHHHHHHHHHHHHHHHHHHEH HHHHHHHHHHH TTT TTT TTT TTT TTT 1 of Ul 8Jn SIO A Aeb 94 Ul sun sow Aeb 16 34 111006 LLL LL LL LL LLLLELLLLLLLLLLIL LL LLLLLJ ee eee eee eee ee eee ee ee eee BREE eee Pt tT Tete ee ee BRE eee eee eee eee eee Ree eee BRE OS eee eee ee ee eee BRE OS Be RPE PE LL LL LLL LL LL ee ee eee BRR ee eee LLLLLLLLLLLLLLELLLL BREE BE eee See eee ee eee PT TTT ET TTT eT
14. Mode A If this is not assured the probe returns zero values After a Basic Balancing the SONO probe has to be set to Measure Mode C again because otherwise the probe would not measure continuously In the menu Calibration and the window Basic Balancing the two set point values of the radar time tp are displayed with 60ps and 1000ps 1 Reference set point A tp 60ps in air the surface of the probe head must be dry The first set point can be activated with the mouse pointer by clicking to No 1 By activating the button Do Measurement the SONO probe determines the first reference set point in air In the column MeasValues the measured raw value of the radar time t is displayed e g 1532 05 picoseconds 2 Reference set point B tp 1000ps in water The SONO probe head has to be covered with water in a height of about 50mm The second set point can be activated with the mouse pointer by clicking to No 2 By activating the button Do Measurement the SONO probe determines the second reference set point in water In the column MeasValues the measured raw value of the radar time t is displayed 3 By activating the button Calculate Coeffs and Coeffs gt Probe the alignment data is calculated automatically and is stored in the SONO probe non volatile With a Test run in Mode A the radar time tp of the SONO probe should be now 60ps in air and 1000ps in water Basic Balancing Calculated lt in File in Probe
15. NCal of IMKO can be used upon request Step 4 The coefficients m1 0 0581 and 4 05 see next page for the calibration curve Cal14 can be entered directly by hand and are stored in the probe by pressing the button Set The selected calibration curve e g Cal14 which is activated after switching on the probes power supply will be adjusted with the button Set Default Calib 3 1 2 Nonlinear Calibration Curves SONO probes can also work with non linear calibration curves with polynomials up to 5th grade Therefore it is necessary to calibrate with 4 8 different calibration points To calculate nonlinear coefficients for polynomials up to 5th grade an EXCEL software tool from IMKO can be used on request It is also possible to use any mathematical program like MATLAB for finding a best possible nonlinear calibration curve with suitable coefficient parameters mO to m5 The following diagram shows a sample calculation for a linear calibration curve with the coefficients mO and m1 for a specific material 18 34 4 4 4 4 4 LESE Lc SSS SSS SSS SSS SS SS SSS SE SSSR SRS SSS SaaS 9 9 5 5 4 9 9 9 9 2 4 4 4 eae ae aaa eee Sa es see eee ae M NM Sane eee ee Sees Sew 9 1 3 18 4 3 3 eee SS See SS ee eee sae eee a oe a SC ed Seana eee 2 5 144 5 d
16. User Manual 5 Moisture Probe for Pressure tight Mounting into Vessels and Tubings Suitable for Installations into the VARINLINE In Line Access Units DN40 DN125 of GEA Tuchenhagen I publik TECH_MAN TRIME SONO ENGLISH SONO FLANGE SONO FLANGE MAN Vers2_3 english doc MKO 2 34 IMKO Micromodultechnik GmbH Telefon 49 0 7243 5921 0 Im St ck 2 Fax 49 0 7243 90856 D 76275 Ettlingen e mail http www imko de User Manual for SONO FLANGE As of 07th October 2014 Thank you for buying an IMKO moisture probe Please carefully read these instructions in order to achieve ideal results with your probe SONO FLANGE for the in line moisture measurement Should you have any questions or suggestions regarding your new probe after reading please do not hesitate to contact our authorised dealers or IMKO directly We will gladly help you List of Content 1 Instrument Description SONO FLANGE 42244222 31122 4 1 1 1 The patented TRIME TDR Measuring Method c ccccccececscsesecesescececescecececeecevecrensevaees 4 1 1 2 TRIME compared to other Measuring Methods 0 4 1 1 3 Areas of Application for the SONO FLANGE 5 kes MOGE 6 1 2 1 Measurement value collection with pre check aver
17. age value and filtering 6 1 2 2 Determination of the mineral Concentration 6 1 2 8 Temperature 6 1 2 4 Analogue Outputs 6 1 2 1 as a user friendly network system 7 1 2 2 Error Reports and Error 2 Configuration of the Measure 8 2 1 Operation Mode CA and CF at non continuous Material 8 2 1 1 Average Time in the measurement mode CA and 9 2 1 2 Filtering at material gaps in mode or 10 2 1 3 Mode CC automatic summation of a moisture quantity during one batch process 1 1 2 1 4 CH Automatic Moisture Measurement in one Batch 13 2 2 Overview of single modes for different 13 3 34 682 NNI RE MR TT RR TP 14 3 1 1 Creating a linear Calibration Curve for a specific 17 3 1 2 Nonlinear Calibration 9 17 Connectivity to SONO PIODGS iiec RvE cU as xcu CO Cua 19 x IEEE Connection auiem 20 4 1
18. ating average value filtering and an accuracy of up to 0 1 Setting CS Cyclic Successive For very short measuring processes without floating average with internal up to 100 measurements per second and a cycle time of 200 milliseconds at the analogue output Mode CC Cyclic Cumulated with automatic summation of a moisture quantity during one batch process Mode CH Cyclic Hold similar to mode CC but without summation e Average Time reaction rate of the measurement values e Calibration if completely different materials are deployed e Filter Function Each of these settings will be preserved after shut down of the probe and is therefore stored on a permanent basis 2 1 Operation Mode CA and CF at non continuous Material Flow For mode CA and CF the SONO probes are supplied ex factory with suited parameters for the averaging time and with a universally deployable filter function suited for most currently applications The setting options and special functions of SONO probes depicted in this chapter are only rarely required It is necessary to take into consideration that the modification of the settings or the realisation of these special functions may lead to faulty operation of the probe For applications with non continuous material flow there is the option to optimise the control of the measurement process via the adjustable filter values Filter Lower Limit Filter Upper Limit and the time constant No Material Keep Time The con
19. ctometry with Intelligent Micromodule Elements does not only enable the measuring of the moisture but also to verify if the mineral concentration specified in a recipe has been complied with This means more reliability at the production TRIME TDR technology operates in the ideal frequency range between 600MHz and 1 2 GHz Capacitive measuring methods also referred to as Frequency Domain Technology depending on the device operate within a frequency range between 5MHz and 40MHz and are therefore prone to interference due to disturbance such as the temperature and the mineral contents of the measured material Microwave measuring systems operate with high frequencies gt 2GHz At these frequencies nonlinearities are generated which require very complex compensation For this reason microwave measuring methods are more sensitive in regard to temperature variation SONO probes calibrate themselves in the event of abrasion due to a novel and innovative probe design This consequently means longer maintenance intervals and at the same time more precise measurement values The modular TRIME technology enables a manifold of special applications without much effort due to the fact that it can be variably adjusted to many applications IMKO 5 3 4 MECRCMCOULTECHNIE 1 1 3 Areas of Application for the SONO FLANGE Probes The SONO FLANGE probe is suited for installation into vessels and tubings The SONO FLANGE is suited for measuring moisture o
20. e menu Bus and the window Scan Probes the serial bus can be scanned for attached SONO probes takes max 30 seconds SONO CONFIG reports one or more connected and founded SONO probes with its serial number in the window Probe List One SONO probe can be selected by klicking Exit Config Calibration Test MERCMCDUTECHNI NE 28 34 6 1 2 Configuration of Measure Mode and serial SONO interface In Probe List with Config and Measure Mode amp Parameters the SONO probe can be adjusted to the desired measure mode CA CF CS CK CC or CH see Chapter Configuration Measure Mode Furthermore the serial interface inside the SONO probe can be selected to IMP Bus RS485 or both interfaces Due to very robust behavior it is recommended to select the IMP Bus Measure Mode amp Parameters Default Cycle E Set Default Measure Mode amp Parameters Actual Cycle Mode C Average Mode of Mode C Average Bus Kalman with Boost No l as C IMP amp RS485 Offset with Moist amp ve 10 IMP Average Parameters Average Time s RS485 Filter Upper Limit Offset Filter Lower Lirnit Offset Set Upper Limit Keep Time Lower Limit Keep Time Moisture Threshold No Material Delay s 10 Boost Offset Weight Invalid Measure Count Set 6 1 3 Analogue outputs of the SONO probe In the menu Config
21. e next two pages show different selectable calibration curves which are stored inside the SONO probe Plotted is on the y axis the gravimetric moisture MoistAve and on the x axis depending on the calibration curve the associated radar time tpAve in picoseconds With the software SONO CONFIG the radar time tpAve is shown on the screen parallel to the moisture value MoistAve see Quick Guide for the Software SONO CONFIG In air SONO probes measure typically 60 picoseconds radar time IMKO MERCMCOULTECHN c 40 350 tpAve Radartime in Picoseconds 300 Tt _ 250 E LLLLLLLLISILLLLLLLLELLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLL BB SE J 200 150 ERR ERE LL ee eee eee ee ee eee eee BER _ M IN iN iN BEEN 111111 EH Boda LLLI e
22. er Standard Setting 1x10 5 Setting Range 0 01 1x10 7 R Parameter Standard Setting 0 033 Setting Range 0 01 0 1 K Parameter Standard Setting 0 01 Setting Range 0 01 0 2 This Kalman filter parameter Q is used to characterize the systemic measurement error It is recommended to leave this parameter to the default setting This Kalman filter parameter R is used for smoothing the measurement error The lower this parameter the faster is the response to smaller changes in the moisture readings The higher this parameter is the more smoothed the measured value but with a delayed reaction time It is recommended to leave this parameter to the default setting This special Kalman filter parameter K is used for a pre dynamic behaviour of the Kalman Filter for higher changes in the moisture reading i e the reaction rate of the measurement signal can be affected hereby The K parameter is related to the Average Time It is recommended to leave this parameter to the default setting 2 1 1 Average Time in the measurement mode CA and CF SONO FLANGE establishes every 200 milliseconds a new single measurement value which is incorporated into the continual averaging and issues the respective average value in this timing cycle at the analogue output The averaging time therefore accords to the memory of the SONO FLANGE The longer this time is selected the more inert is the reaction rate if differently moist mater
23. erial temperature is therefore only possible to a certain degree and only when the electronic housing is completely is completely surrounded by the material The material temperature can be determined after an external calibration and compensation of the sensor self heating 1 2 4 Analogue Outputs The measurement values are issued as a current signal via the analogue output With the help of the service program SONO CONFIG the SONO FLANGE can be set to the two versions for 0 20mA or 4 20mA Furthermore it is also possible to variably adjust the moisture dynamic range e g to 0 10 0 20 or 0 30 or any other range For a 0 10V DC voltage output a 500R resistor can be installed in order to reach a 0 10V output Analogue Output 1 Moisture in 0 20 variable adjustable Analogue Output 2 Conductivity EC TRIME or optionally the temperature In addition there is also the option to split the analogue output 2 into two ranges into 4 11mA for the temperature and 12 20mA for the conductivity The analogue output MKO 7 34 2 hereby changes over into an adjustable one second cycle between these two current measurement windows For the analogue outputs 1 and 2 there are thus two adjustable options Analog Output two possible selections 0 20mA 4 20mA Output Channel 1 and 2 three possible selections 1 Moist Temp Analogue output 1 for moisture output 2 for temperature Or 2 Moist Conductivity Analogue outpu
24. f liquids emulsions and other materials with water contents up to 100 The probe head consists of stainless steel with a round ceramic window The following picture shows the SONO FLANGE with a suitable flange for installation into the VARINLINE In Line Access Unit DN125 of GEA Tuchenhagen With the thread in the probe head of M46x1 5 the SONO FLANGE can be installed in VARINLINE Access Unit DN40 to DN 125 MKO 6 34 1 2 Mode of Operation 1 2 1 Measurement value collection with pre check average value and filtering SONO probes measure internally at very high cycle rates of 10 kHz and update the measurement value at a cycle time of 250 milliseconds at the analogue output In these 250 milliseconds a probe internal pre check of the moisture values is already carried out i e only plausible and physically checked and pre averaged single measurement values are be used for the further data processing This increases the reliability for the recording of the measured values to a downstream control system significantly In the Measurement Mode CS Cyclic Successive an average value is not accumulated and the cycle time here is also 200 milliseconds In the Measurement Mode CA CF and CK not the momentarily measured individual values are directly issued but the floating average value is accumulated via a variable number of measurements in order to filter out temporary variations These variations can be caused by inhomogeneous moisture d
25. ial passes the probe A longer averaging time results in a more stable measurement value This should in i04 IMKO particular be taken into consideration if the SONO FLANGE is deployed in different applications in order to compensate measurement value variations due to differently moist materials At the point of time of delivery the Average Time is set to 4 seconds This value has proven itself to be useful for many types of applications At applications which require a faster reaction rate a smaller value can be set Should the display be too unstable it is recommended to select a higher value The Average Time can be adjusted with the service program SONO CONFIG 2 1 2 Filtering at material gaps in mode CA or CF A SONO probe is able to identify if temporarily no or less material is at the probe head and can filter out such inaccurate measurement values Filter Lower Limit Particular attention should be directed at those time periods in which the measurement area of the probe is only partially filled with material for a longer time i e the material sand temporarily no longer completely covers the probe head During these periods Lower Limit Keep Time the probe would establish a value that is too low The Lower Limit Keep Time sets the maximum possible time where the probe could determine inaccurate too low measurement values Furthermore the passing or wiping of the probe head with metal blades or wipers can lead to the es
26. ime tpAve of the probe is measured with dried material Ideally this takes place during operation of a mixer dryer in order to take into account possible density fluctuations of the material It is recommended to detect multiple measurement values for finding a best average value for tpAve The result is the first calibration point P1 e g 70 0 l e 70ps picoseconds of the radar pulse time tpAve corresponds to 096 moisture content of the material But it would be also possible to use a higher point P1 e g 190 7 where a tpAve of 190ps corresponds to a moisture content of 7 The gravimetric moisture content of the material e g 7 has to be determined with laboratory measurement methods oven drying Step 2 The radar pulse time tpAve of the probe is measured with moist material Ideally this also takes place during operation of a mixer dryer Again it is recommended to detect multiple measurement values of tpAve for finding a best average value The result is the second calibration point P2 with X2 Y2 e g 500 25 l e tpAve of 500ps corresponds to 25 moisture content The gravimetric moisture content of the material e g 2596 has to be determined with laboratory measurement methods oven drying Step 3 With the two calibration points P1 and P2 the calibration coefficients 0 and m1 can be determined for the specific material see next page To calculate nonlinear coefficients for polynomials up to 5 order the software tool TRIME WI
27. in B 0V Power Supply Pin A 12VDC Power Supply Pin C rt Lead Colour grey pink Pin J Lead Colour blue red How to start with the USB Module SM USB from IMKO e Install USB Driver from USB Stick e Connect the SM USB to the USB Port of the PC and the installation will be accomplished automatically e Install Software SONOConfig SetUp msi from USB Stick e Connection of the SONO probe to the EX9531 via RS485A RS485B and OV e Check the setting of the COM Ports in the Device Manager und setup the specific COM Port with the Baudrate of 9600 Baud in SONO CONFIG with the button Bus and Configuration COM1 COM 15 is possible e Start Scan probes in SONOConfig e he SONO probe logs in the window Probe List after max 30 seconds with its serial number MKO 27 34 6 Quick Guide for the Commissioning Software SONO CONFIG With SONO CONFIG it is possible to make process related adjustments of individual parameters of the SONO probe Furthermore the measurement values of the SONO probe can be read from the probe via the serial interface and displayed on the screen In the menu Bus and the window Configuration the PC can be configured to an available COMx port with the Baudrate of 9600 Baud Bus Configuration General 3 1 E x Serial Fort y SonoConfig Exit Bus Help LN 6 1 1 Scan of connected SONO probes on the serial interface In th
28. istribution in the material surrounding the sensor head The delivery scope of SONO FLANGE includes suited parameters for the averaging period and a universally applicable filter function deployable for currently usual applications The time for the average value accumulation as well as various filter functions can be adjusted for special applications 1 2 2 Determination of the mineral Concentration With the radar based TRIME measurement method it is now possible for the first time not only to measure the moisture but also to provide information regarding the conductivity respectively the mineral concentration or the composition of a special material Hereby the attenuation of the radar pulse in the measured volume fraction of the material is determined This novel and innovative measurement delivers a radar based conductance value EC TRIME Radar based Conductivity in dS m as characteristic value which is determined in dependency of the mineral concentration and is issued as an unscaled value The EC TRIME measurement range of the SONO FLANGE is 0 40dS m 1 2 3 Temperature Measurement A temperature sensor is installed into the SONO FLANGE which establishes the casing temperature beneath the electronic housing see point 2 2 The temperature can optionally be issued at the analogue output 2 As the TRIME electronics operates with a power of approximately 1 5 W the probe casing does slightly heat up A very precise measurement of the mat
29. l circumstances of the installation facility The ideal installation location must be established individually The following guidelines should hereby be observed It is important that the probe is positioned in an optimal material flow Attention Hisk of Breakage The probe head is made of stainless steel and a very wear resistant ceramic in order to warrant for a long life span of the probe In spite of the robust and wear resistant construction the ceramic plate may not be exposed to any blows as ceramic is prone to breakage In case of welding work at the plant all probes must be completely electrically disconnected Any damage caused by faulty installation is not covered by the warranty Abrasive wear of sensor parts is not covered by the warranty IMKO MERCMCDIULTECHNIE Y GNB 23 34 5 1 Mechanical dimensions SONO FLANGE With the help of a mounting flange the probe SONO FLANGE can be installed into vessels or tubings SONO Electronic Housing E E ua internal Temperature Sensor 400 m 5 Ql O Ring 0 42 M46x1 5 IMKO MEKROMCDUTECHN 24 34 5 2 Possible dimensions of a mounting flange The following drawing shows the necessary dimensions of a mounting flange With the M46x1 5 thread SONO FLANGE can be mounted into many standard industrial flanges 5 3 Installation of SONO FLANGE with free flowing materials If free flowing materials with low material density are to
30. lel saved in a file In the menu Test and the window Test in Mode CS the measured single measurement values Moist 5 values per second of the SONO probe are displayed on the screen and parallel stored in a file In Test in Mode single measurement values without average are displayed on the screen and can also be stored in a file Attention for a test run in mode CA CF CS or A it must be ensured that the SONO probe was also set to this mode Measure Mode CA CF CS A If this is not assured the probe returns zero values Test in Mode Cyclic 11 93 2014 7 56 26 50 50 00 21 07 4 222 88 7 50 7 5 7 57 7 50 11413 2014 7 9 20 90 50 00 91 07 gt cc 00 7 57 7 5 L 00 11 032014 26 50 55 00 91 00 4 221 74 8 10 7 5 7 44 757 92 0 910 11 02 2014 20 20 50 00 90 93 3 220 5 ey 7 90 910 910 11 03 2034 7 4 26 20 25 00 91 00 3 22 33 7 50 7 44 1 00 1 0 91 0 11 02 2014 7 42 25 2 50 00 91 00 221 5 7 44 7 44 5 92 7 50 31 0 910 18 03 2014 7 652 25 2 amp 00 91 07 3 222 3 7 51 7 50 1 00 31 0 910 11 02 2014 26 55 00 91 1 3 222 6 7 44 7 44 1 00 31 0 92 0 16 04 00 11 03 2014 7 52 26 55 06 91 1 222 64 7 57 7 5 7 51 7 44 21 0 310 16 03 59 11 032014 26 20 50 00 91 21 3 23 5 7 51 7 5 7 1 00 91 0 910 16 03 58 11 03 2014 26 29 50 00 91 21 264 44 7 91 7 48 7 97 5l 71 0 910 16 03 57 11032014 26 00 50 00 91 21 E 23 6 7 51 8 0 75 1 00 91 0 92 0 6 03 56 11 03 2014 26 00 50 00 91 1 2
31. nuous measurement values yellow curve accumulation of measurement values yellow curve MKO y 13 34 2 1 4 Mode CH Automatic Moisture Measurement in one Batch If the PLC already accumulates moisture values than an additional automatic summation of a moisture quantity inside the SONO VARIO during one batch process will produce errors From the procedure the mode CH is identically with the mode CC but without automatic summation 2 2 Overview of single modes for different applications The following table gives an overview about possible parameter settings in different modes Sand Gravel under a silo flap At the end of a Screw conveyor in a screw conveyor with filtering options due to metal us Gene rally simple appli cations Inside a fluid bed dryer Inside a mixer Above a conveyor belt Application Installation and specific Parameters Long term process Operating Mode Average Time inactiv inactiv 100 100 inactiv 100 inactiv 100 inactiv 100 Filter Upper Limit Offset e g 20 Filter Lower Limit Offset Upper Limit Keep Time Lower Limit Keep Time Moisture Threshold No Material Invalid Measure Count inactiv 100 inactiv inactiv 100 e g 10 inactiv inactiv inactiv 100 100 100 d e g 10 inactiv inactiv 10 10 inactiv inactiv 10 10 mo a d e g 10 inactiv inactiv inactiv inactiv
32. onds to the respective moisture value By clicking Save the recorded data is saved in a text file in the following path XSSONO CONFIG exe Pfad MD Dateiname The name of the text file Statis SN yyyymmddHHMMSS sts is assigned automatically with the serial number of the probe SN and date and time The data in the text file can be evaluated with Windows EXCEL 6 1 6 Measure run in Datalogger Operation In the menu Measure it is possible to aquire and store measurement data from several SONO probes with variable and longer cycle rates in a datalogger operation e g to store measurement data during a long term drying cycle IMKO y 31 34 6 1 7 Basic Balancing in Air and Water SONO probe heads are identical and manufactured precisely After an exchange of a probe head it is nevertheless advisable to verify the calibration and to check the basic calibration and if necessary to correct it with a Basic Balancing With a Basic Balancing two reference calibration measurements are to be carried out with known set points RefValues For the reference media different calibration materials are used dependent on the SONO probe type For SONO probes with a ceramic measurement window air and water tap water is used For other SONO probes like SONO GS1 glass beads are used for basic calibrations on request Attention Before performing a Basic Balancing it must be ensured that the SONO probe was set to Measure
33. re can be determined after an external calibration and compensation of the sensor self heating IMKO 33 34 MEASUREMENT DAT A PREPROCESSING MEASUREMENT MODE CA Cyclic Average For relative short measuring processes with continual average value filtering and an accuracy of up to 0 196 MEASUREMENT CF Cyclic Float Average For very slow measuring processes with floating average value filtering and an accuracy of up to 0 196 MEASUREMENT MODE CS Cyclic Successive For very short measuring processes without floating average with internal up to 100 measurements per second and a cycle time of 200 milliseconds at the analogue output Mode CC Cyclic Cumulated with automatic summation of a moisture quantity during one batch process Mode CH Cyclic Hold similar to Mode CC but without summation SIGNAL OUTPUT 2 x Analogue Outputs 0 4 20mA Output 1 Moisture in 0 2096 variably adjustable Output 2 Conductivity EC TRIME 0 40dS m or optionally the temperature In addition there is the option to split the analogue output 2 into two ranges into 4 11mA for the temperature and 12 20mA for the conductivity The analogue output 2 hereby changes over into an adjustable 5 second cycle between these two current measurement windows The two analogue outputs can be variably aligned with the SONO CONFIG software For a 0 10V DC voltage output a 500R resistor can be installed CALIBRATION The sensor is provided with a unive
34. riate filter algorithms because the metal of the spiral has an influence of the measurement The appropriate parameters have to be found dependent on screw velocity It is recommended to use measurement mode CK if the probe is installed in the middle of the screw conveyor without a cut out of the spiral Please take also a look the chapter Overview of single modes for different applications IMKO 26 34 MEROMCDULTECHNIE Y CNE 5 5 Connection of the RS485 to the SM USB Module from IMKO The SM USB provides the ability to connect a SONO probe either to the standard RS485 interface or to the IMP Bus from IMKO In fact that the IMP Bus is more robust and enables the download of a new firmware to the SONO probe the SONO probes are presetted ex factory to the IMP Bus So it is recommended to use the IMP Bus for a serial communication Both connector ports are shown in the drawing below The SM USB is signalling the status of power supply and the transmission signals with 4 LED s When using a dual USB connector on the PC it is possible to use the power supply for the SONO probe directly from the USB port of the PC without the use of the external AC adapter Connection to the Probe RS485 Connector Pin B 0V Power Supply Pin A 12VDC Power Supply Pin RS485B Lead Colour brown Pin F RS485A Lead Colour white 12VDC IMP B nn r With the option to accomplish a download of the firmware for the SONO probe P
35. rsal calibration for sand A maximum of 15 different calibrations can be stored For special materials variable calibrations with polynomials up to the 5 order are possible and can be downloaded into the sensor with the SONO CONFIG software Download per Internet A zero point correction can be performed easily with the SONO CONFIG software COMMUNICATION A RS485 interface enables network operation of the sensor whereby a data bus protocol for the connection of several SONO sensors to the RS485 is implemented by default The connection of the sensor to industrial busses such as Profibus Ethernet etc is possible via optional external modules available upon request POWER SUPPLY 7V to 24 DC 1 5 W AMBIENT CONDITIONS 0 70 C On request High temperature version with external measurement transformer MEASUREMENT FIELD EXPANSION Approximately 30 50 mm depending on material and moisture CONNECTOR PLUG The sensor is equipped with a robust 10 pole MIL flange connector Ready made connection cables with MIL connectors are available in the lengths 4m 10m or 25m 34 34 Precise Moisture Measurement industry hydrology forestry agriculture environmental earth science civil engineering as well as individual applications
36. rticularly disadvantageous for small batches Recipe errors can occur 3 Material gaps during one batch process will lead to zero measurement values which falsify the accumulated measurement value considerably Recipe errors can occur Unlike current microwave probes SONO probes work in mode CC with automatic summation where it is really ensured that material has contact with the probe This increases the reliability for the moisture measurement during one complete batch process The summation is only working if material fits at the probe Due to precise moisture measurement also in the lower moisture range SONO probes can record accumulate and store moisture values during a complete batch process without an external switching or trigger signal The SONO probe freezes the analogue signal as long as a new batch process starts So the PLC has time enough to read in the freezed moisture value of the batch For applications without a PLC the freezed signal of the SONO probe can be used for displaying the moisture value to a simple 7 segment unit as long as a new batch process starts With the parameter Moisture Threshold the SONO probe can be configured to the start moisture level where the summation starts automatically Due to an automatic recalibration of SONO probes it is ensured that the zero point will be precisely controlled The start level could be variably set dependent to the plant Recommended is a level with e g 0 5 to 1 With
37. t 1 for moisture output 2 for conductivity in a range of 0 40dS m Or 3 Moist Temp Conductivity Analogue output 1 for moisture output 2 for both temperature and conductivity with an automatic current window change For analogue output 1 and 2 the moisture dynamic range and temperature dynamic range can be variably adjusted The moisture dynamic range should not exceed 100 Moisture Range Temp Range Maximum e g 20 for sand Set in 96 Maximum 70 C Minimum 0 Minimum 0 1 2 1 The IMP Bus as user friendly network system With external power supply on site for the SONO probes a simple 2 wire cable can be used for the networking By use of 4 wire cables several probes can be also supplied with power Standard RS485 interfaces cause very often problems They are not galvanically isolated and therefore raises the danger of mass grindings or interferences which can lead to considerably security problems An RS485 network needs shielded and twisted pair cables especially for long distances Depending on the topology of the network it is necessary to place 100Ohm termination resistors at sensitive locations In practice this means considerable specialist effort and insurmountable problems The robust IMP Bus ensures security SONO probes have in parallel to the standard RS485 interface the robust IMP Bus which is galvanically isolated which means increased safety The serial data line is isolated from the probe s power suppl
38. tablishment of too high measurement values Filter Upper Limit The Upper Limit Keep Time sets the maximum possible time where the probe would determine inaccurate too high measurement values Using a complex algorithm SONO probes are able to filter out such faulty individual measurement values The standard settings in the Measurement Mode CA and CF for the filter functions depicted in the following have proven themselves to be useful for many applications and should only be altered for special applications It is appropriate to bridge material gaps in mode CA with Upper and Lower Limit Offsets and Keep Time For example the Lower Limit Offset could be adjusted with 296 with a Lower Limit Keep Time of 5 seconds If the SONO probe determines a moisture value which is 2 below the average moisture value with e g 8 than the average moisture value will be frozen at this value during the Lower Limit Keep Time of 5 seconds In this way the material gap can be bridged This powerful function inside the SONO probe works here as a highpass filter where the higher moisture values are used for building an average value and the lower or zero values are filtered out In the following this function is described with SONO parameters oufficient material for an accurately moisture measurement value of e g 896 Material gaps over e g 3 seconds which must be bridged for an accurately measurement with a Lower Limit Keep Time of 5 seconds a TX h 7
39. the parameter No Material Delay a time range can be set where the SONO probe is again ready to start a new batch process Are there short material gaps during a batch process which are shorter than the No Material Delay with no material at the probes surface then the SONO probe pauses shortly with the summation 15 the pause greater as the No Material Delay then the probe is ready to start a new batch process IMKO 12 34 How can the mode CC be used if the SONO probe cannot detect the moisture threshold by Itself e g if there is constantly material above the probe over a longer time In this case a short interrupt of the probe s power supply e g for about 0 5 seconds with the help of a relay contact of the PLC can restart the SONO probe at the beginning of the material transport After this short interrupt the SONO probe starts immediately with the summarizing and averaging Please note It should be noted that no material sticks on the probes surface Otherwise the moisture zero point of the probe will be shifted up and the probe would not be detect a moisture low value below the Moisture Threshold Following possible parameter settings in mode CC inside the SONO probe can be set Parameter in mode CC Function Moisture Threshold The accumulation of moisture values starts above the in moisture Moisture Threshold and the analogue signal is Standard Setting 1 output The accumulation pauses if the moisture level Se
40. tinual floating averaging can be set with the parameter Average Time Filler Parameter in the Function Measurement Mode CA and CF Average Time The time in seconds for the generation of the Continual Floating Average Value continual floating average value can be set with Standard Setting 3 this parameter 9 34 MKO Seting Fange 2 20 Oooo S S ZZ Filter Upper Limit Standard Setting 3 Setting Range 1 1 5 Upper Limit Keep Time otandard Setting 4 Setting Range 2 10 Filter Lower Limit otandard Setting 0 90 Setting Range 0 8 0 97 Lower Limit Keep Time otandard Setting 4 Setting Range 2 20 Too high measurement values generated due to metal wipers or blades are filtered out The upper limit is set in For a moisture value reading of e g 8 the upper limit is thus 8 3 11 The maximum duration in seconds of the filter function for Upper Limit failures too high measurement values can be set with this parameter Too low measurement values generated due to insufficient material at the probe head e g due to the mixer blades are filtered out The lower limit is set as a multiplication factor For a moisture value reading of e g 89e the lower limit is thus 8 x 0 9 7 2 The maximum duration in seconds of the filter function for Lower Limit failures too less material at the probe can be set with this parameter Kalman Filter Parameter in Measurement Mode CK Q Paramet
41. tting Range 1 20 is below the threshold value No Material Delay The accumulation stopps if the moisture value is below in seconds the moisture threshold The SONO probes starts again in a new batch with a new accumulation after the Standard Setting 5 ed n in Setting Range 1 20 time span of the No Material Delay is exceeded The first batch process stops The The last freezed summerized and SONO probe recognizes that the averaged moisture value is freezed measurement value is below the at the analogue output until the No moisture threshold of 1 and the Material Delay time of e g 5 probe stops automatically with the seconds has expired and a new 32 summation yellow curve batch process starts o Short interruptions 3 were bridged kN A vu o gt bor m E ut 5 Characteristic of 4 moisture curve in sand adjustable j No Material Delay e g 5 seconds 1 Adjustable Moisture iresnold i O E Time Start of first batch process The Start of second batch process After the period SONO probe recognizes that the of No Material Delay e g 5 seconds the adjustable moisture threshold of e g SONO probe recognizes that the threshold of 1 has been exceeded and the 1 has been exceeded The previously stored probe starts automatically with the measurement value is cleared and the probe continuous accumulation of starts again automatically with the conti
42. wn r MP Bus com 1 2 mnaogue Posive s Pink O E 2 Analogue Return Line Screen transparent transparent is grounded at the sensor The plant must be properly grounded IMKO MERCMCDULTECHNIE Y GNB 21 34 4 1 2 Analogue Output 0 10V with a Shunt Resistor There are PLC s which have no current inputs 0 20mA but voltage inputs 0 10V With the help of a shunt resistor with 500 ohm in the delivery included it is possible to generate a 0 10V signal from the current signal 0 20mA The 500 ohm shunt resistor should be placed at the end of the line resp at the input of the PLC Following drawing shows the circuit principle PLC SONO Probe Current signal 0 20mA Analog Positive Analog Return Line 4 1 3 Connection diagramm with SONO VIEW SONO SILO SONO VARIO tzdV DC Power Suppl or GND IMP Bus COM uu 1 IMP Bus RIT Connection to further SONO probes Connection further SONO probes 1 Analog Positivity _ 1 Analog Positiv NE 1 Analog Positiv 1 Analog Positiv NE 0 4 20mA PLC 0 4 20mA SONO VIEW Analogue input or Analogue input Installation in the control moisture moisture Distribution Cabinet room or inside the distribution cabinet IMKO 22 34 5 Installation of the SONO FLANGE The installation conditions are strongly influenced by the constructiona
43. y and the complete sensor network is therefore independent from single ground potentials and different grid phases Furthermore the IMP Bus transmit its data packets not as voltage signals but rather as current signals which also works at already existing longer cables A special shielded cable is not necessary and also stub lines are no problem 1 2 2 Error Reports and Error Messages SONO FLANGE is very fault tolerant This enables failure free operation Error messages can be recalled via the serial RS485 interface MKO 8 34 2 Configuration of the Measure Mode The configuration of SONO FLANGE is preset in the factory before delivery A process related later optimisation of this device internal setting is possible with the help of the service program SONO CONFIG For all activities regarding parameter setting and calibration the probe can be directly connected via the RS485 interface to the PC via R8485 USB Module which is available from IMKO The following settings of SONO FLANGE can be amended with the service program SONO CONFIG Measurement Mode and Parameters e Measurement Mode A On Request only in network operation for the retrieval of measurement values via the RS485 interface e Measurement Mode C Cyclic Setting CA Cyclic Average For relative short measuring processes with continual average value filtering and an accuracy of up to 0 1 Setting CF Cyclic Float Average For very slow measuring processes with flo
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