General Specifications
Contents
1. C 14 to 248 F Pb36 JIS NTC 6k 20 to 120 C 4 to 248 F Cable length 60 meters 196 feet from the sensor to the analyzer Influence of cable can be adjusted by doing an AIR CAL with the cable connected to a dry cell Output Range Conductivity gt min 0 01 uS cm max 2000 mS cm max 90 zero suppression min 0 001 kQ x cm max 1000 MQ x cm max 90 zero suppression Simin 25 C 77 F max 200 C 392 F for NTC 8k55 sensor max 120 C 248 F Resistivity Temperature Performance Accuracy The specifications are expressed with simulated inputs Conductivity 2 ho x CC to 200 ms x CG Accuracy 20 5S F S 1 uS x CC to 2 US x CC Accuracy 2e YoP oy Resistivity 0 005k2 CC to 0 5MQ CC Accuracy 20 56 0 5MQ CC to 1MQ CC Accuracy 21 or wo Temperature with Pt1000 Pb36 Ni100 Accuracy 0 3 C with Pt100 NTC 8k55 Accuracy 0 4 C Temperature compensation NaCl table 1 Matrix 23 Note F S means maximum setting value of analyzer output CC means Cell Constant YOKOGAWA provides conductivity sensors of which cell constants are 0 01 to 10 emh Calibration Semi automatic calibration using pre configured OIML KCl buffer tables with automatic stability check or Manual adjustment to grab sample Inductive Conductivity ISC Input Specification Compatible with the Yokogawa inductive conductivity ISC40 series with integrated temperature se2. General Specifications The model FLXA21 two wire analyzer is used for continuous on line measurements in industrial installations It offers an option for single or dual sensor measurement making it the most flexible 2 wire analyzer available The model FLEXA21 modular designed series analyzer offers 4 parameter choices PH ORP oxidation reduction potential contacting conductivity SC inductive conductivity ISC or dissolved oxygen DO with the respective sensor module For dual sensor measurement the sensor modules must be the same parameter DH ORP and pH ORP SC and SC and DO and DO Dual sensor measurement offers additional functionalities including a variety of calculated data from the two measuring parameters as well as the option to program the analyzer as a redundant system In the redundant system the main output parameter is automatically switched over to the second sensor output in case of the main sensor s failure ISC is only available as a single measurement When the analyzer is initially powered on the FLXA21 automatically recognizes the installed sensor module and initiates Quick Start menus for fast easy start up Only a few setups date time language basic sensor configurations and output are needed to start the measurement The FLXA21 incorporates the same unique Human Machine Interface HMI as seen in the EXA450 series offering easy touch screen operation and a simple intuiti
3. Cable Entry Polycarbonate case 1 Sensor measurement 3 holes M20 cable gland x 3 pcs Sleeve x 1 pc for grounding cable line 2 Sensor measurement 4 holes M20 cable gland x 4 pcs Sleeve x 1 pc for grounding cable line Stainless steel case 7 holes M20 cable gland x 7 pcs Close up plug x 5 pcs Note Cable gland and plug are delivered with an analyzer but not assembled into the analyzer Mounting Mounting hardware option Universal mounting kit Note Pipe and wall mounting hardware Panel mounting hardware Note This kit contains the pipe and wall mounting hardware and the panel mounting hardware Stainless steel Stainless steel with urethane coating Stainless steel with epoxy coating Hood option Stainless Steel Tag Plate Blank tag plate is hanging type delivered with an analyzer When the additional code SCT and a tag number is specified the specified tag number is inscribed Inscription is optional Conduit Adapter Using optional adapter G1 2 quantity 4 1 2NPT quantity 4 M20 x 1 5 quantity 4 These conduit adapters are delivered with an analyzer but not assembled into the analyzer Size of Housing Case Poly carbonate 144 x 144 x 151 mm L x W x D without cable gland 165 x 165 x 160 1 mm L x W x D without cable gland Stainless steel case Shipping Details Package size App 340 x 340 x 370 mm L x W x H Ambient Operating Temperatur
4. epoxy coating Tag plate SCT Stainless steel tag plate Conduit adapter CB4 Conduit adapter G1 2 x 4 pcs CD4 Conduit adapter 1 2NPT x 4 pcs CF4 Conduit adapter M20 x 1 5 x 4 pcs D A Ea e TA Country Note 4 N J ENN Notes 1 HMI Human Machine Interface is not available on the analyzer HART communication is to be used 2 When a 2nd input is selected only the same kind of the 1st input is available For example when a 15 input is P1 the 24 input must be the same P1 The combination of ISC and ISC is not available 3 These languages are message languages on the analyzer s display One analyzer has English and 11 languages All languages are as follows English German Portuguese Russian Japanese Korean Chinese Spanish Czech Italian French and Polish pending 4 When an analyzer is used in Japan it must meet the Japanese Measurement Law Only SI units must be used on the analyzer and its documents in Japan 5 The universal mounting kit contains the pipe and wall mounting hardware U and the panel mounting hardware PM 6 The type EA is intrinsically safe type and non incendive type n of ATEX IECEx FM and CSA pending GS 12A01A02 01E E 10 Dimensions and Mounting Unit mm 4 M6 depth 5 Poly carbonate Housing Unit mm FaosP yp y Poo om ott KAMAL
5. Redundant is selected Enter as a process parameter Reset redundant system Return mA to Sensor1 tiair gt Y Example 2 Calibration Aa m 5 ct a gt gt Display and Operating Interface The Display is a Black White LCD touch screen FLXA21 uses the same unique Human Machine Interface HMI as seen in the EXA450 series offering easy touch screen operation and simple menu structure Graphical keys on the right and other areas of the touch screen respond to contact as virtual push buttons Figures below show a conductivity and pH measurement and the value will reflect the sensor modules installed in the FLXA21 E Tag FLXA21 PH DH 24 7 C EEH 6 E 2 8 Tag FLXA21 PH aT 4 98 Home Display Home Display appears upon startup when two sensor modules are connected Home display is not available when only one sensor is connected Tag FLXA21 PH 6 282 H O EY 4mA 20mA Pa Main Display Main Display appears upon startup when one sensor module is connected When a FLEXA21 has two sensor modules in the unit selecting Sensor 1 or Sensor 2 on the home display brings up the main display of the selected sensor Status screen Status screen or Information button gives access to diagnostic information with regard to the analyzer or sensors No malfunction detected A Warning When a warning indicator appears maintenance is required Pressing this key displays the
6. ground 100 ohm or less The way of connecting the grounding cable varies depending on the poly carbonate housing and stainless steel housing In the case of the poly carbonate housing connect the grounding cable to the terminal of the power module inside and in the case of the stainless steel housing connect the grounding cable to the terminal of the housing Use a cable with an outside diameter of 3 4 to 7 mm for the grounding line of the poly carbonate housing 3 Refer to module 4 Two modules can be connected to the same object When measuring inductive conductivity only one module can be connected 5 The terminal box may need to be connected depending on the object under test or the sensor selected 6 This line is connected to a distributor 7 Two outputs of SDBT are same 17 BOR DESC OOL_F eels YOKOGAWA ELECTRIC CORPORATION World Headquarters 9 32 Nakacho 2 chome Musashino shi Tokyo 180 8750 Japan www yokogawa com YOKOGAWA CORPORATION OF AMERICA 12530 West Airport Blvd Sugar Land Texas 77478 USA www yokogawa com us YOKOGAWA EUROPE B V Euroweg 2 3825 HD Amersfoort The Netherlands www yokogawa com eu GS 12A01A02 01E E Subject to change without notice Copyright YOKOGAWA ELECTRIC ASIA Pte LTD 5 Bedok South Road Singapore 469270 Singapore www yokogawa com sg YOKOGAWA CHINA CO LTD 3F Tower D Cartelo Crocodile Building No 568 West Tianshan Road Changing District Shanghai Ch
7. AA For sensor 2 cable For sensor 1 cable For grounding cable Stainless Steel Housing Unit mm inch Packing 55 2 2 ag 1 93 G1 2 screw CB4 1 2 NPT screw CD4 M20 screw CF4 Conduit adapter GS 12A01A02 01E E 11 Unit mm inch min 185 7 25 e ea ite N N lo O bE amp E Option PM panel mounting diagram Unit mm inch wall mounting pipe mounting pipe mounting vertical horizontal 14 0 55 LA 7 2 ND pipe st SAAN Wisk Unit mm QO Unit mm Housing with stainless steel hood Option H6 H7 H8 Stainless steel housing Note When option code UM is specified universal pipe wall pannel mounting kit are supplied same as option code U and PM both specified GS 12A01A02 01E E Wiring Diagrams BA10 S Sa Terminal box FLXA21 2 Wire Analyzer ERO Dismibuior nnnnnnnnn 73 0 00000000Q E ee ee eee ee ee eee ee Output 2 1 5V DC nnnnnnnnn T Output 1 1 5V DC Power supply 20 to 130V DC or 80 to 138V AC 47 to 63Hz BA10 S Terminal baz Stainless steel Plastic housing housing 1 Use a 2 conductor shielded cable with an outside diameter of 6 to 12 mm 2 Ground FLXA21 Class D
8. ART 18 2 Voltage V Supply Supply Voltage and Load Resistance Display LCD with a touch screen Black White 213 x 160 pixels Contrast adjustment available on the touch screen 11 English Japanese Chinese Korean German Portuguese Russian Spanish French Italian and Czech Polish pending One analyzer has all 11 languages Message language Note On a language selection screen its title and description and its menu of languages are described in English Note Only English alphabet and numeric are available for a tag number and an additional description for each value on the display screen and passwords Note Only for message language on the screen 11 languages are provided Mechanical and others Housing Options Available Case Polycarbonate Stainless steel without painting Stainless steel with epoxy coating Stainless steel with urethane coating Case color and finish Color Silver gray equivalent to Munsell 3 2PB7 4 1 2 for poly carbonate case stainless steel cases with coating Finish Electropolishing for stainless steel case without painting Window Polycarbonate flexible Protection NEMA4X IP66 Plate inside case cover on the case outside Main name plate Regulation plate Cable and Terminal Cable Size Requirements Not Provided Outer diameter 6to 12mm suitable for M20 cable gland 3 4 to 7 mm grounding cable for poly carbonate case Terminal screw size M4
9. aintenance e NEMA 4X IP66 Enclosure GS 12A01A02 01E E 2nd Edition General Specifications Basic Measurement Parameter The FLXA21 can be configured to measure e oH Oxidation reduction Potential 9 H ORP e Contacting Conductivity SC e Inductive Conductivity ISC e Dissolved Oxygen DO Note The available measurement parameter depends on a sensor module installed in the analyzer Analyzer Structure Module structure Composition of Analyzer One 1 Base module General Purpose e CSA FM ATEX pending e FOUNDATION Fieldbus pending e PROFIBUS pending One 1 or two 2 Sensor modules inputs The FLXA21 supports up to two sensors of the same type thereby reducing installation costs Allowable combinations when two modules are installed are e oH ORP and pH ORP e SC and SC e DO and DO Measurement pH Redox Potential pH ORP Input Specification Dual high impedance input 21012 Q compatible with all Yokogawa pH ORP sensors and most competitor electrodes Input Range OH 2 to 16 pH ORP 1500 to 1500 mV rH Oto 100 rH Temperature Pt1000 30 to 140 C 22 to 284 F Pt100 30 to 140 C 22 to 284 F 6k8 30 to 140 C 22 to 284 F PTC10k 30 to 140 C 22 to 284 F NTC 8k55 10 to 120 C 22 to 284 F 3k Balco 30 to 140 C 22 to 284 F PTC500 30 to 140 C 22 to 284 F Cable length 60 meters 196 feet from the sensor to the analyzer Output Range
10. d Sensor wellness setup can be made in Commissioning Measurement setup Sensor diag settings The Reset wellness data button allows you to reset data except temperature calibration This is done when a new sensor is installed Sensor wellness Zero Slope Input 1 imp Input 2 imp Heat cycle Progress Time lt gt Reset welness data Next For pH Sensor wellness Polarization LILI Cellconstant C Heat cycle aeea Progress Time Gis lt gt Reset welness data For SC The FLXA21 still utilizes the same self diagnostics as seen in the EXA series On line checks Faults Off line checks Zero Slope Impendence of glass pH Calibration Due Projected replacement Model amp Suffix Code Model__ Suffixcode FLXA21 O Powersupply DO aa Optioncode Description _ O Always D Poly carbonate Stainless steel Stainless steel urethane coating Stainless steel epoxy coating Standard LCD Without display Note 1 General purpose ATEX IECEx FM CSA Note 6 a Re H ORP Conductivity SC Inductive conductivity ISC Dissolved oxygen DO pe at a oS Without input H ORP Conductivity SC Dissolved oxygen DO Global except Japan Japan Mounting hardware UM Universal mounting kit Note 5 AJ Pipe and wall mounting hardware PM Panel mopunting hardware H6 Hood stainless steel H7 Hood stainless steel urethane coating H8 Hood stainless steel
11. detected malfunction code and pressing the malfunction codes displays troubleshooting guide lines for resolving the malfunction Fail Indicates malfunction Pressing this key displays the detected malfunction code and pressing the malfunction codes displays troubleshooting guidelines for resolving the malfunction Fail Temperature too high o Warn No warn Ente Measured process temperature exceeds maximum limit Remedy Check process temperature Check programmed sensor type Check connections and cable Trend Screen Trend Screen appears when the primary value on the main display is pressed or when the Trend button on the Zoom display is pressed Tag FLXA21 PH pH1 Maximum lt Live reading lt Minimum Measurement value gt A A X axis Show the Time scale user programmable from 15 minutes to 14 days B Y axis Measurement value axis user programmable C Tag No D Current measurement value with unit E Trend maximum minimum and average values during the display update time F Icon current measurement value and maximum and minimum values until the display update G Warn Fail indicators indicated only during Warn Fail status Maintenance screen Execute amp Setup appears when the commissioning button is pressed The maintenance screen gives access to calibration commissioning and configuration of the inst
12. e 20 to 55 C 4 to 131 F Storage Temperature 30 to 70 C 22 to 158 F Humidity 10 to 95 RH Non condensing Document Following documents are delivered with an analyzer Paper copy Start up Manual written in English CD ROM Start up Manual pdf written in 12 languages User s Manual pdf written in English Safety Regulation Manual pdf for European region written in 25 languages Regulatory Compliance ATEX and CSA FM Pending Safety EN61010 1 CSA C22 2 N 61010 1 EMC EN61326 1 Class A Table 2 For use in industrial locations EN61326 2 3 AS NZS CISPR11 Installation altitude 2000 m or less Category based on IEC 61010 Note 1 Pollution degree based on IEC 61010 2 Note 2 Note 1 Installation category called over voltage category specifies impulse withstand voltage Equipment with Category ex 2 Wire transmitter is used for connection to circuits in which measures are taken to limit transient over voltages to an appropriately low level Note 2 Pollution degree indicates the degree of existence of solid liquid gas or other inclusions which may reduce dielectric strength Degree 2 is the normal indoor environment Digital Communication Type of Digital Communication e HART e FOUNDATION Fieldbus Pending e PROFIBUS Pending Note Only one kind of digital communication is available for one analyzer Output Value Parameter HART Four value parameters are a
13. ic sensors and Optical sensors For temperature compensation the FLXA21 accepts Pt1000 DO30G and Visiferm sensor and NTC22k elements OXYFERM OXYSENS and OXYGOLD sensors Input Range Output Range DO3OG sensor Input Dissolved Oxygen O to 50 mg l ppm DOSOG Sensor Output DO concentration min 1 mg 1 ppm max 50 mg 1 ppm saturation min 10 Cable length max 60 meters 196 feet total length of the fixed sensor cable WF10 extension cable Hamilton Sensors Input and Output OXYFERM Measurement range 10 ppb to saturation or 0 1 200 of air oxygen Temperature range Oto 130 C 92 to 2606 F OXYSENS Measurement range Temperature range OXYGOLD G Measurement range 40 ppb to saturation O to 60 C 32 to 140 F 1 ppb to saturation or 0 012 200 of air oxygen Temperature range O to 130 C 32 to 266 F OXYGOLD B Measurement range 8 ppb to saturation or 0 1 200 of air oxygen Temperature range O to 100 C 82 to 212 F VISIFERM Measurement range Temperature range 4 ppb to 40 pom 0 to 180 C 32 to 266 F GS 12A01A02 01E E Performance Accuracy The specifications are expressed with simulated inputs Performance in pom mode Linearity 0 05 pom or 0 8 F S whichever is greater 0 05 pom or 0 8 F S whichever is greater 0 05 pom or 0 8 FS whichever is greater Repeatability Accuracy Performance in ppb mode Lineari
14. ina www yokogawa com cn YOKOGAWA MIDDLE EAST B S C c P O Box 10070 Manama Building 577 Road 2516 Busaiteen 225 Muharraq Bahrain www yokogawa com bh Yokogawa has an extensive sales and distribution network Please refer to the European website www yokogawa com eu to contact your nearest representative YOKOGAWA Printed in The Netherlands 2 0111 A
15. nction of backing up the 1st module with the 2nd module This function is designed such that under normal conditions the sensor 1 pH value is the current output and if the sensor 1 fails the sensor 2 pH value is the current output Y sensor 1 operative Time XK Sensor 1 Fails Sensor 1 Alive Fail gt Alive Alive mA output Repair sensor 1 mA output Automatically switch Switch back to sensor 1 Sensor 2 to sensor 2 manually Alive Alive mA output Example 1 sensor failure Time x Sensor 1 in calibration WA Sensor 1 operative Sensor 1 Alive Start gt End Alive mA output Calibration mA output Switch back to sensor 1 Intentionally switch Sensor 2 to sensor 2 manually Alive Alive mA output Example 2 sensor calibration If sensor 1 fails the output is automatically switched to the sensor 2 value Even if a failure on the sensor 1 is recovered automatically after failure detection the output will not be switched back automatically and the sensor 2 value will continue to be output After repairing sensor 1 Output setup reset the backup made mA Output gt by the redundant system This enables the sensor 1 value to be incorporated in the output On the Reset redundant system selection of Yes makes the output return to the output of the 1st module Configure Hold Reset redundant t lt P m gt ct lt This display is the example when E
16. nd DIN 19245 part 4 GSD file The actual file can be downloaded from www profibus com Power supply Data transfer Configuration Local with 6 keys Software Firmware based on Siemens DPC31 stack Hardware PC or PCMCIA interfaces from Siemens Siemens PDM systems Terminals acc to IEC 1158 2 Twisted and shielded two wire cable according to recommendation based on IEC 1158 2 6 to 12 mm 0 24 to 0 47 inch Other control Electrical connection Fieldbus cable types Cable diameter FOUNDATION Fieldbus H1 Communications Pending Input signal Digital Supply voltage 9 to 32 V DC Operating current 26 0 MA pH and 24 5 mA SC ISC and DO Operating values Bus connection According to IEC 1158 2 Fieldbus interface based on IEC 1158 2 according to FISCO Model Power supply is achieved dependant on the application by means of segment coupler FF Specification Rev 1 4 Basic Power supply Data transfer device Function blocks 8xAl Transducer Resource Files Actual file can be downloaded from our homepage Configuration Local with 6 keys GS 12A01A02 01E E Software National Instruments NI FBUS configurator Hardware FBUS interfaces from National Instruments AT FBUS and PCMCIA FBUS Other control systems Yokogawa PRM DMT Redundancy A Variety of calculated data from two measuring parameters is selectable for each measurement The redundant system is a fu
17. nsor NTC30k or Pt1000 Input Range Conductivity 0 to 2000 mS cm at 25 C 77 F min O uS cm at process temperature max 2 S cm at process temperature Temperature 20 to 140 C Cable length max 60 meters 196 feet total length of the fixed sensor cable WF10 extension cable Influence of cable can be adjusted by doing an AIR CAL with the cable connected to a dry cell Output Range Conductivity min span 100 uS cm max span 2000 mS cm max 90 zero suppression Temperature mim 20 0 gt max 200 C Performance Accuracy The specifications are expressed with simulated inputs Output span is 0 100 uS cm or more Conductivity Linearity Repeatability 0 4 F S 0 3 uS cm 0 4 F S 0 3 uS cm am Temperature Accuracy 0 3 C Note F S means maximum setting value of analyzer output Calibration Semi automatic calibration using pre configured OIML KCI buffer tables with automatic stability check or Manual adjustment to grab sample Dissolved Oxygen DO Input Specification The FLXA21 accepts output from membrane covered Dissolved Oxygen sensors These sensors can be Galvanic type where the sensor generates its own driving voltage Polarographic type where the sensor uses external driving voltage from the transmitter or Optical sensor where luminiscent technology is utilized The input range is O to 50 pA for Galvanic sensors O to 1 micro A for Polarograph
18. pH min Span 1 pH gt max Span 20 pH ORP min Span 100 mV gt max Span 3000 mV rH min Span 2 rH max Span 100 rH min Span 25 C max Span 200 C for 8 55kV NTC sensor max 120 C Temperature GS 12A01A02 01E E Performance Accuracy The specifications are expressed with simulated inputs OH Linearity 0 01 pH Repeatability 0 01 pH Accuracy 0 01 pH ORP Linearity 1 mV Repeatability gt 1 mV Accuracy 1 mV Temperature with Pt1000 6k8 PTC10k NTC 8k55 3k Balco PTC500 Linearity 03 C Repeatability gt 0 1 C Accuracy 20 3 C with Pt100 Linearity 0 4 C Repeatability 20 1 C Accuracy 0 4 C Calibration Semi automatic 1 or 2 point calibration using pre configured NIST US DIN buffer tables 4 7 amp 9 or with user defined buffer tables with automatic stability check or Manual adjustment to grab sample Conductivity SC Input Specification Two or four electrode measurement with square wave excitation Any cell constant from 0 005 to 50 0 cm 1 can be used Influence of cable can be adjusted by doing an AIR CAL with the cable connected to a dry cell Input Range Conductivity min O uS cm max 200 mS x Cell constant over range 2000 mS cm Resistivity min 0 005 kQ Cell constant max 1000 MQ x cm Temperature Pt1000 20 to 250 C 4 to 482 F Pt100 20 to 200 C 4 to 392 F Ni100 20 to 200 C 4 to 392 F NTC 8k55 10 to 120
19. rument These operations can be protected by passwords Execute amp Setup Execute Calibration Wash Hold it Temporary output Setup ad lt gt Commisioning lt gt Change language Start Quick Setup nte GS 12A01A02 01E E Zoom Display Zoom Display appears when the Zoom button on the main display is pressed The Zoom display shows an easy to read graphical display of the output status When Next is pressed it will give access to current sensor settings Sensor wellness last known calibration data and log book data Zero 0 000 mV Slope 0 000 Sensor 50 00 mV Zero 0 000 mV Slope 0 000 Sensor 0 000 mV Impedance Impedance2 Next B 2010 10 15 17 04 07 Last calibrated at 2020 09 08 08 00 00 Calibration due at 2020 10 08 08 00 00 Projected maintenace 6 12 months no meaning Projected replacement 3 6 months good pred Next Read Logbook Logbook 1 1 Logbook 1 2 GS 12A01A02 01E E Sensor Wellness It is important that the system be well maintained to make a precise measurement The electrodes must be properly cleaned and regularly calibrated At the Sensor wellness window the healthiness of a sensor is displayed A larger number of in each gauge indicates that the particular parameter is sound A gauge is indicated for only those parameters whose sensor wellness setting is enabled while a bar is displayed if the sensor wellness setting is disable
20. ty 1 ppb or 0 8 F S whichever is greater 21 ppd or 0 8 F S whichever is greater Repeatability Accuracy 2 Ppo OFf 20 676 FS whichever is greater Temperature Linearity a03 C Repeatability caT G Accuracy 03 C Note F S means maximum setting value of analyzer output Electrical Output Signal FOUNDATION Fieldbus and PROFIBUS PA Pending General One 4 20 mA DC loop powered output Note Tolerance 0 02 mA Bi directional HART digital communication superimposed on mA 4 20mA signal Output function Linear or Non linear 21 step table Burn out function NAMUR 43 Without HART PH201G Down 3 6 mA signal 3 8 to 20 5 mA for OH ORP SC and DO signal 3 9 to 20 5 mA for ISC Up 22MA With HART Down 3 6 mA for pH ORP SC and DO Down 3 9 mA for ISC signal 3 8 to 20 5 mA for pH ORP SC and DO signal 3 9 to 20 5 mA for ISC Up 22MA Power Supply Nominal 24 V DC loop powered system One 1 Sensor module 1 input 16 to 40V DC for DH ORP SC amp DO 17 to 40V DC for ISC Two 2 Sensor modules 2 inputs 22 8 to 40V DC for PH ORP SC amp DO GS 12A01A02 01E E Maximum Load Resistance Figure 1 The FLEXA21 will not start up below 16V and the load resistance has to be above 250 ohm the HART communication will only work above 18 2VDC and 304 ohm load max 600 ohm O iq 2 7 eb ae O O Digital Communication Range H
21. vailable for one digital communication For 1 sensor measurement these parameters are measured values For 2 sensor measurement refer to the next item Digital Communication of 2 Sensor Measurement HART Even when two sensor modules are installed only one digital communication is available for 2 sensor measurement Four value parameters can be selected from the followings Measured values of two sensors Calculated data of 2 sensor measurement Redundant system output GS 12A01A02 01E E Features of FLEXA Sensor Calculation For pH pH For DO DO Differential input input2 Average inputi input2 2 Sensor Calculation For SC SC Ratio input input2 Average inputi input2 2 Differential input input2 input2 input1 X 100 Rejection input input2 input1 X 100 Deviation inout2 inputt input1 X 100 OH calc VGB pH 8 6 log input1 input2 3 Passage am p e AR ARETE Note for resistivity only differential and average can be selected PROFIBUS PA Communications Pending Input signal Digital Supply voltage 9 to 32 V DC Operating current 26 0 mA pH and 24 5 mA SC ISC and DO Operating values Bus connection According to IEC 1158 2 Fieldbus interface based on IEC 1158 2 according to FISCO Model Power supply is achieved dependant on the application by means of segment coupler According to PROFIBUS PA profile class B based on EN 50170 a
22. ve menu structure available in 12 different selectable languages The FLXA21 provides industry proven measurement accuracy incorporating essential temperature compensation and calibration functionalities with advanced self diagnostics and sensor wellness indication to provide a highly reliable measurement The logbook of events and diagnostic data provided are useful information sources for preventive maintenance Yokogawa designed the FLXA21 to withstand a wide range of industrial environments The FLXA21 is housed in a robust NEMA 4X IP66 mountable enclosure and meets all the CE regulatory standards It is designed to have the option for enclosure housing selection to meet specific industry needs poly carbonate stainless steel or stainless steel with corrosion resistant coating FLEXA YOKOGAWA Model FLXA21 2 Wire Analyzer FLEAN Features e One analyzer can accept any of 4 types of measurements pH ORP Contacting Conductivity SC Inductive Conductivity ISC and Dissolved Oxygen DO e Dual sensor measurement on a 2 wire type analyzer DH ORP and pH ORP SC and SC and DO and DO e Modular design replaceable sensor modules e Redundant system on dual sensor measurement e Intuitive easy touch screen operation on 2 wire type analyzer e Unique HMI menu structure in 11 languages Polish pending e Quick setup menu for fast and east measurement operation e Online Sensor Wellness checking for predictive m
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