YOKOGAWA IR800G User Manual Download Page 71

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IM 11G06A01-02EN

5-16

5. SCREENS

1st Edition : Oct. 27, 2023-00

(1) Tap

on the Home/Main screen > Menu

(2) Tap [Cal/Alarm Setting] > Cal/Alarm settings

(3) Tap

to go to Peak alarm setting

(4) Tap [Peak alarm setting]

(5) Tap each item to set.

Items to set

On/Off

"On" to enable the peak alarm function, "Off" to disable it.

Alarm value

Counts once when the preset value is exceeded

Alarm count

The alarm occurs when the number of peaks exceeds the preset number of

times

Hysteresis

Prevents chattering.Even after the Alarm value (peak concentration) has

been exceeded once, it will not be counted as if the Alarm value is exceeded

again unless it falls below a certain width: Alarm value (peak concentration

value) minus Hysteresis width.

Summary of Contents for IR800G

Page 1: ...User s Manual IR800G IR810G Infrared Gas Analyzer Installation and Operation IM 11G06A01 02EN IM 11G06A01 02EN 1st Edition...

Page 2: ...ed to the products whose suffix codes or option codes contain the code Z made to customers specifications Please read it along with this manual For the latest User s Manual download it from our websit...

Page 3: ...erformed with the main power set to OFF to prevent electric shocks Enforce construction of class D grounding wire by all means If the specified grounding construction is neglected a shock hazard or fa...

Page 4: ...pose of maintenance parts and other replacement parts in accordance with local rules l Inspection of product On receipt of the product inspect the package and note it has no damage caused by the deliv...

Page 5: ...by a person with specialized knowledge n How to dispose the batteries Only valid in the EU for EU Battery Directive Regulation and in the UK for UK Battery Regulation Batteries are included in this p...

Page 6: ...he spare parts approved by Yokogawa Electric Corporation hereafter simply referred to as YOKOGAWA when replacing parts or consumables Modification of the product is strictly prohibited The following s...

Page 7: ...istributor This manual is an essential part of the product keep it in a safe place for future reference n Symbols Symbols in the instructions indicate the following l Symbols for key and button operat...

Page 8: ...ission to use copy modify distribute and sell this software and its documentation for any purpose and without fee is hereby granted provided that the above copyright notices appear in all copies and t...

Page 9: ...ged repair fee regardless of warranty period Failure of components which are out of scope of warranty stated in instruction manual Failure caused by usage of software hardware or auxiliary equipment w...

Page 10: ...xternal Dimensions 2 10 3 INSTALLATION 3 1 3 1 Where to install equipment 3 1 3 2 Installation 3 2 3 3 Piping 3 3 3 4 Sampling 3 5 3 5 Wiring 3 6 3 6 External Oxygen Meter Settings 3 17 4 OPERATION 4...

Page 11: ...an calibration 5 40 5 4 3 Automatic calibration 5 42 5 4 4 Auto Zero Calibration 5 44 5 4 5 Automatic Validation 5 47 5 5 Information 5 50 5 6 Maintenance 5 52 5 6 1 Blowback 5 52 5 6 2 Loop check 5 5...

Page 12: ...neous measurement of up to 4 components except for O2 measurement is possible The single beam measurement method is easy to maintain The zero point is always corrected by switching with a reference ga...

Page 13: ...rminal block 9 Terminal block 3 Fuse 4 Power terminal 10 Atmospheric vents 2 Display operation panel Figure 1 1 Name Description Name Description 1 Power Switch ON OFF the analyzer The IR810G does not...

Page 14: ...d valve 7 Solenoid valve Gas Analyzer IR800 series 2 3 12 Mist catcher when SO2 included R 1 For use of NO meters SO2 meters and 0 200 ppm CO meters be sure to use a dehumidifier such as an electronic...

Page 15: ...the range is less than or equal to the ranges below the use of a reference gas purifier is recommended NO meter 0 100 ppm or less SO2 or less 0 50 ppm or less CO 0 1000 ppm or less Please contact us...

Page 16: ...play Output Infrared light source Gas inlet Gas sample cell Gas Outlet Detector Pre amplifier Signal Processing Unit Figure 1 4 l Magnetic oxygen analyzer O2 LED Pre amplifier Magnetic field Mirror Pe...

Page 17: ...Blank Page...

Page 18: ...s value after O2 correction only in CO SO2 NO meters with O2 measurement Average value after O2 correction only in CO SO2 NO meters with O2 measurement Analog output Isolated output 4 20 mA DC Maximum...

Page 19: ...to 45 C IR810G Ambient humidity 10 to 90 RH at 40 C no condensation Storage temperature 10 to 50 C Storage humidity 35 to 85 R H no condensation Power Supply voltage Voltage rating 100 to 240 V AC All...

Page 20: ...n operation or by remote execution instructions The output at hold can be selected from the previous value and the set value Range changeover The output range of measured values can be changed automat...

Page 21: ...red component Use dry N2 or instrument air free of dust or mist as the purge gas The required flow rate is approximately 1 L min A CO Peak Alarm An alarm is issued when the number of times the measure...

Page 22: ...Flow rate 0 5 to 1 0 L min Temperature 0 to 50 C Pressure 4 9 to 9 8 kPa Gas outlet side should be open to the atmospheric air The pressure fluctuation relative to the set pressure shall be within 2...

Page 23: ...Automatic Validation N V None Automatic Validation Gas connection R T Rc1 4 1 4NPT Display Language J E C Japanese English Chinese Mount Type S R Rack with slide rail Rack without slide rail NN Alway...

Page 24: ...n Measuring gas range SO2 Measuring Range See n Measuring gas range CO Measuring Range See n Measuring gas range CO2 Measuring Range See n Measuring gas range CH4 Measuring Range See n Measuring gas r...

Page 25: ...ity is 10 per order Items specified at order IR800G IR810G TAGNO only if necessary You can create TAGNO tag number with alphanumeric characters described in the next table 16 characters at maximum can...

Page 26: ...Note None NN 0 1000 5000 ppm 1 C1 Optional range 0 2000 10000 ppm 1 2 C2 Optional range 0 0 5 2 5 vol 1 3 C3 0 1 5 vol 1 C4 0 5 25 vol C5 0 20 100 vol 4 C6 Optional range 1 For multi component meters...

Page 27: ...2 32 6 169 465 101 6 483 177 7 429 M4 for slide rail Rack mounting dimensions Terminal Block1 Terminal Block3 Atmospheric pressure vent Sample gas inlet Reference gas inlet Sample Reference gas outlet...

Page 28: ...23 00 l IR810G Unit mm 310 595 400 412 134 5 291 560 614 230 240 590 310 590 310 134 5 Min 500 368 2 0 582 2 0 4 M8 or 10 Mounting hardware for panel mounting Mounting hardware for wall mounting Wall...

Page 29: ...evice 15 5 3 x 4 5 hole Figure 2 3 How to install in a 19 inch rack The instrument mass should be supported at the bottom of the main unit or at the side of the main unit when mounting on a slide rail...

Page 30: ...e from cable chips or other foreign objects Otherwise it may cause fire trouble or malfunction of the unit 3 1 Where to install equipment Installation Requirements The product is for indoor use Avoid...

Page 31: ...rator can access and indicate that it is the power switch of the IR800G IR810G 3 2 Installation The next table shows the type of mounting and its code of equipment Rack mounting type of equipment can...

Page 32: ...ing If such a material is adhering a fire or the like accident may be caused CAUTION Piping connection must be secured Gas inlets have several types reference gas inlet outlet or purge gas inlet When...

Page 33: ...ons with respect to the set pressure are 2 Sampling gas reference gas outlet Measured gas is exhausted after measurement Connect the pipe so that the gas may escape through the gas outlet into the atm...

Page 34: ...ting formation of drain in the analyzer If water vapor is contained in sample gas its dew point should be reduced down to about 0 C through a dehumidifier If SO3 mist is contained in sample gas the mi...

Page 35: ...ce l Pressure at sampling gas outlet Pressure at the sampling gas outlet should be adjusted to atmospheric pressure 3 5 Wiring WARNING Never power on the product with the top cover or front door of th...

Page 36: ...Cable Shielded cables are very effective for noise rejection The method of grounding the shield depends on the usage conditions Single ended grounding in which the shield is connected only to the grou...

Page 37: ...llation of IR810G cable gland Screw the cable gland into the connection hole from below where the cable is to be routed see Fig 3 4 Make sure that the screws are properly inserted before tightening In...

Page 38: ...Remove Tighten plug Power supply wiring port Figure 3 4 IR810G cable gland installation CAUTION Avoid injury from the edge of the housing hole etc CAUTION To install the cable gland supplied with the...

Page 39: ...for power supply wiring lines are as follow IR800G unrestricted IR810G 6 5 to 12 mm L N N L IR800G IR810G earth 100 to 240V AC 100 to 240V AC Ferrite core accessory Figure 3 5 Wiring power supply CAUT...

Page 40: ...lated We recommend that signals be isolated individually to eliminate unwanted signal wraparound and disturbance effects when drawing wiring outdoors wiring longer than 30 m or connecting multiple out...

Page 41: ...485 Digital communication Available when R is selected 3 AI 4 GND Unused pins not connectable 5 N C 6 B If termination is required connect A and TERM 7 N C 8 A Analog output CH1 9 AO1 10 TERM unused...

Page 42: ...nt Table 3 2 RS 485 terminal assignment Terminal block 2 Terminal No Terminal name use 2 FG Shield 4 GND Signal GND 6 B Data anode 8 A Data cathode 10 TERM For connecting a terminating resistor 110 Us...

Page 43: ...O12NO 2 DO15NO contact output CH15 c contact 3 DO12COM 4 DO15COM 5 DO12NC 6 DO15NC contact output CH13 c contact 7 DO13NO 8 DO16NO contact output CH16 c contact 9 DO13COM 10 DO16COM 11 DO13NC 12 DO16N...

Page 44: ...espondence chart Comp Spec O2 meter Option Code Output and corresponding channels Ch1 Ch2 Ch3 Ch4 Ch5 Ch6 Ch7 Ch8 Ch9 Ch10 Ch11 Ch12 A1 NO N not specified NO A2 SO2 N not specified SO2 A3 CO N not spe...

Page 45: ...2 Correct NO Correct SO2 Correct NO Ave Correct SO2 Ave O2 Ave B2 NO CO 1 2 3 4 K NO CO O2 Correct NO Correct CO Correct NO Ave Correct CO Ave O2 Ave B4 CO CO2 1 2 3 4 K CO CO2 O2 Correct CO Correct C...

Page 46: ...ion or calibration time mm ss Set appropriate values l Setting Contact setting Contact output setting To notify IR800G IR810G of the end of calibration or errors during calibration the following setti...

Page 47: ...Blank Page...

Page 48: ...ration and regular operation Procedure 1 Turn ON the power The IR810G turns on when the power supply is connected The measurement screen appears on the front display panel 2 Warm up operation for abou...

Page 49: ...TION 1st Edition Oct 27 2023 00 4 2 Keys and function on Panel Display Displays the measurement screen and setting items Controls Touch panel Power switch Display Operation panel IR810G Display Operat...

Page 50: ...ing The service mode is for our service personnel only Customers cannot use it Calibration Alarm setting select an item below Calibration channel 5 1 1 Calibration channel setting Auto calibration 5 1...

Page 51: ...values 4 Unit Indication of ppm vol mg m3 1 5 Range switching mode Indication of how to switch between Range 1 and Range 2 6 Peak alarm component display 2 CO Peak Alarm Component Indication 7 Peak Al...

Page 52: ...verage are the O2 converted concentration value or O2 concentration value of the component to be measured taken once every 30 seconds and the O2 average is the average of the O2 converted concentratio...

Page 53: ...ount Number of times to generate a peak count alarm l Reset Button Pressing the Reset button displays a confirmation dialog box and selecting Yes clears the current peak count 2 Settings and selection...

Page 54: ...2 Touch the save icon to confirm the change Figure 4 7 3 Ch channel measurement value correspondence table See Table 3 3 4 Basic Operations Measurement screen Measurement screen displays up to 5 Chan...

Page 55: ...ividual alarm Character Icons Main alarm Individual alarm Figure 4 9 Zero calibration alarm Span calibration alarm Automatic calibration alarm Calibration Stability Alarm Zero Calibration Caution Span...

Page 56: ...uch Calibration Ch setting For each channel the component text is displayed in gray and cannot be changed calibration range span gas concentration manual zero calibration and Auto Calibration Auto Zer...

Page 57: ...n analyzer If an external oxygen meter is subject to automatic validation refer to the span gas concentration set in the external oxygen meter and set the value Used as a judgment value during validat...

Page 58: ...calibration enable disable Operation by setting Automatic Simplified Zero Calibration setting will perform automatic calibration as follows 1 When zero calibration is performed by automatic calibrati...

Page 59: ...bration First start day Set the starting day of the week for the first calibration First start time hhmm Set what time and minute to start the first calibration Interval The time interval between the...

Page 60: ...al Zero Calibration 5 4 2 Manual span calibration and 5 4 3 Automatic calibration If an external oxygen analyzer and its channel is the target channel set the following Assign Chx for span calibration...

Page 61: ...sec Ch3 span 350 sec Ch4 span 300 sec Ch5 span 300 sec Replacement 300 sec When auto calibration is performed with the above settings Auto calibration in progress Sunday 12 00 Interval Monday 12 00 Tu...

Page 62: ...to zero calibration setting 4 Tap each item to set l Items to set On Off On Off setting of the automatic zero calibration First start day Set the starting day of the week for the first calibration Fir...

Page 63: ...00 Zero cal 300 sec Replace ment 300 sec Flow time The gas replacement time after calibration is equal to the flow time The components set to Enable Ch1 to Ch5 in l Manual Zero Calibration Setting of...

Page 64: ...item to set l Setting Validation Alarm Ranges During automatic validation you can check the validity of the measurement and whether calibration is necessary or unnecessary by confirming that the diff...

Page 65: ...span point validation is automatically performed at a set time This setting screen is displayed only when the code V in the Automatic Validation is specified 1 Tap on the Home Main screen Menu 2 Tap C...

Page 66: ...1 Tap the on the Automatic validation setting screen scroll down and touch Flow time The flow time setting screen will appear 2 Touch the on the flow time setting screen to display the gas for which y...

Page 67: ...alidation 300 sec Replacement This is an example when Ch1 to Ch5 are set to Enable in 5 1 5 Automatic Validation Setting and the oxygen analyzer is a built in oxygen analyzer Figure 5 4 l Setting rang...

Page 68: ...ring measurement To output the set alarm externally assign the alarm set here to any contact output For details on contact output settings see 5 2 3 Contact output setting 1 Tap on the Home Main scree...

Page 69: ...e so that H Limit L Limit In addition set the value so that H Limit value L Limit value hysteresis width If you want to set the H Limits below the already set L Limit lower the L Limit at first and th...

Page 70: ...e for 10 minutes after power on 5 1 7 Peak alarm setting During measurement the peak count alarm turns ON when the number of peaks exceeding the upper limit of CO measurement concentration exceeds the...

Page 71: ...e the peak alarm function Off to disable it Alarm value Counts once when the preset value is exceeded Alarm count The alarm occurs when the number of peaks exceeds the preset number of times Hysteresi...

Page 72: ...he set number of times per hour the alarm is turned OFF In the above figure the peak count alarm is turned ON in the because 5 peaks appeared in 1 hour The time from 1 to 2 remains ON because the peak...

Page 73: ...st start day Set the starting day of the week for the first blowback First start time hhmm Set what time and minute to start the first blowback Interval The time interval between the last blowback and...

Page 74: ...ings Blowback in progress Monday 12 00 Monday 00 00 Sunday 12 00 Cycle Blowback 3 min 300 sec Replacement 300 sec l Setting range Interval 1 to 99 hours or 1 to 40 days default 7 days Blowback time mi...

Page 75: ...nnel component you cannot change Chx range setting Set the number of ranges the upper limit and the number of decimal places for Range 1 and the upper limit and the number of decimal places for Range...

Page 76: ...e and upper limit value shall be set to satisfy the following equation Lower limit range Range 1 Range 2 Upper limit range 2 The maximum number of digits that can be entered in the range is 4 Decide t...

Page 77: ...ms The average value is output every 30 seconds from the current time up to 1 hour set time ago At the time of reset all values prior to the current time are calculated as zero Therefore accurate aver...

Page 78: ...s the hold setting Current output x Ch setting assigned to current output pins x 1 to 4 Output hold Output hold refers to holding the current output to the previous value or a preset value when the eq...

Page 79: ...the top of the screen due to some abnormality or calibration related error Hold follows the Hold setting for maintenance calibration validation and blowback and follows the Hold in case of failure set...

Page 80: ...Fault is set to On the output signal of each channel component is held during the state of each instrument during calibration validation and blowback even during the replacement time after the end of...

Page 81: ...ut input 4 Screen display during hold The lights up at the top of the screen on the measurement screen 5 After the start of each process of various calibrations automatic validation and hold operation...

Page 82: ...ned to the contact outputs Multiple functions can be assigned to a single contact or a single function can be assigned to multiple contacts To assign multiple functions to a single contact select mult...

Page 83: ...nge is Range 1 and cancels when the range is Range 2 When the component of Ch is an O2 correction value O2 correction average value or average value the output is not output During hold the output mai...

Page 84: ...contact input setting is used to assign functions to the contact input terminals 1 Tap on the Home Main screen Menu 2 Tap Setting Settings 3 Tap Contact input settings 4 Tap each item to set l Items t...

Page 85: ...tomatic validation setting is Off it will be executed according to the gas flow channel and flow time settings See 5 1 5 Setting Automatic Validation for more information on automatic validation setti...

Page 86: ...igures settings related to O2 correction i e O2 correction calculations This setting item is displayed when this analyzer is measuring oxygen l Items to set Ref O2 concentration Setting reference valu...

Page 87: ...een Select from 10 60 min However this function is not enabled in the calibration related screen automatic validation screen blowback screen loop check screen valve check screen touch panel adjustment...

Page 88: ...ettings and Execute Pass for executing setting calibration and maintenance 1 Tap on the Home Main screen Menu 2 Tap Others 3 Tap Password Tap the Commissioning Pass and Execute Pass text boxes to set...

Page 89: ...you set a password be sure to write it down If a password has been set entering protected operations such as equipment setup or calibration will prompt you for the password If the correct password ca...

Page 90: ...t 27 2023 00 5 3 2 Date and Time Setting Set the date and time for this product 1 Tap on the Home Main screen Menu 2 Tap Others 3 Tap Date Time setting 4 Tap the Date Time to set Tap the Adjust to cha...

Page 91: ...1 02EN 5 36 5 SCREENS 1st Edition Oct 27 2023 00 5 3 3 Adjust panel Adjust panel controls the touch panel and brightness 1 Tap on the Home Main screen Menu 2 Tap Others 3 Tap Adjust panel 4 Tap each i...

Page 92: ...ed coordinates are displayed as shown on the right Touch the cross position and confirm that the displayed coordinates are OK A few dots of misalignment in both the X and Y directions should cause no...

Page 93: ...nt screen Calibration menu 3 Confirm the calibration contents on the screen that appears If there are no problems tap the Next button For the operation of the contact output when the solenoid valve is...

Page 94: ...ion gas no longer exists After the replacement time has elapsed the measurement screen is automatically displayed Touching the Abort immediately terminates the replacement time and displays the measur...

Page 95: ...at was displayed in the measurement screen When the unit of Ch component is mg m3 or g m3 the unit of gas concentration is displayed together with ppm Calibration menu 3 Confirm the calibration conten...

Page 96: ...o longer exists After the replacement time has elapsed the measurement screen is automatically displayed Tapping the Abort immediately terminates the replacement time and displays the measurement scre...

Page 97: ...ndicating that calibration is in progress is displayed at the top of the screen in the measurement screen and the Ch component to be automatically calibrated switches to the calibration range 5 During...

Page 98: ...auto calibration error will be resolved after the next successful auto calibration or manual calibration regardless of success or failure A calibration stability error may occur due to insufficient f...

Page 99: ...tart End of calibration Figure 5 14 Gas flow channel setting Analyzer for system calibration for zero calibration for CH1 span calibration for Chx span calibration Calibration start End of calibration...

Page 100: ...close short circuit the input terminal to which Automatic zero calibration start is assigned in the contact input setting and open release it after at least 1 5 seconds For contact input settings see...

Page 101: ...he blinking during the replacement time you can also stop the process during the replacement time l Contact output during automatic zero calibration The contact output during simple zero calibration s...

Page 102: ...ibration range on the screen that appears If there is no problem tap the Start validation The automatic validation starts and the measurement screen is displayed 4 indicating that validation is in pro...

Page 103: ...ontact output setting to assign the necessary functions Validation of the external oxygen analyzer is performed at the time of zero validation Since the solenoid valve operation of the oxygen componen...

Page 104: ...tact output setting for the functions assigned to contact outputs and 5 1 5 Setting Automatic Validation for sample switching for zero calibration for CH1 span calibration for CHx span calibration Val...

Page 105: ...splayed An event consists of an error name and the date and time it occurred year month day hour minute See 7 2 Error log for a description of the errors l Description of Calibration log screen This s...

Page 106: ...he validation log are displayed with the number of decimal places and units of the calibration range Table 5 4 Each component displayed in the calibration log Cal type Coefficient name Number of decim...

Page 107: ...tting See 5 1 8 Blowback setting for more information on blowback setting l Starting from the screen 1 Tap the icon on the measurement screen The menu screen appears 2 Touch Maintenance The maintenanc...

Page 108: ...ars For passwords see 5 3 1 Password 2 When you tap the Yes button in the cancel confirmation dialog the blowback is canceled the replacement time is in progress and icon blinks 3 To stop processing d...

Page 109: ...output A keyboard dialog appears Enter the current value you wish to output x 1 to 4 6 If you change Test validity AO or AO Test Output the background of the changed item will turn blue and the in the...

Page 110: ...e measurement screen The menu screen appears 2 Touch Maintenance The maintenance menu will appear 3 Select Valve check Automatic calibration The Valve check Automatic calibration screen will appear 4...

Page 111: ...functions to auto zero calibration For contact output setting refer to 5 2 3 Contact Output Setting 1 Tap icon on the measurement screen The menu screen appears 2 Touch Maintenance The maintenance me...

Page 112: ...the icon on the measurement screen The menu screen appears 2 Touch Maintenance The maintenance menu will appear 3 Select Valve check Automatic Validation The Valve check Automatic Validation screen wi...

Page 113: ...screen all alarms that have occurred can be monitored Tap the alarm name in the alarm list screen to display the Alarm details screen that shows the description and countermeasures for that alarm See...

Page 114: ...t water and vapor Make sure the sealing area is clean and properly fitted when opening the front door to remove the cable gland and put it back in place CAUTION Never use strong chemicals or solvents...

Page 115: ...the groove on the holder cap rotate the cap 90 degrees counterclockwise Once this is done the fuse can be pulled out with the entire cap 3 Install a new fuse in the holder making sure it has the give...

Page 116: ...ew filter 2 a plate and 3 a snap ring in that order The filter has two sides Insert the filter into the fitting with the smooth non fluffy side facing to the front Insert the plate This also has a fro...

Page 117: ...MAINTENANCE 1st Edition Oct 27 2023 00 Plate K9211FB back front C shaped snap ring Y9011EV Filter K8020PW Figure 6 3 IR810G Filter replacement Plate K9211FB Filter K8020PW back front back front Figur...

Page 118: ...ow time has elapsed the measured value of Chx is not stable Check the setting of the flow time x 1 to 5 Table 7 2 Warning Alarm name Description Remedy Date and time not set The date and time have not...

Page 119: ...played screen In this case the measurement screen Tapping an error name displays the alarm details screen which displays a description of the alarm and how to address it Tap the icon to return to the...

Page 120: ...r Log screen which displays the error log can be accessed from Menu Information For details see 5 5 Information Figure 7 1 Error log A maximum of 14 errors can be saved in the error history If more th...

Page 121: ...Blank Page...

Page 122: ...tice IR800G General Purpose model Infrared Gas Analyzer CMPL 11G06B01 01EN 1st Edition Oct 2023 YK 3 2 4 5 1 Item Part No Qty Description 1 A1513EF 1 Fuse 5A 2 Y9011EV 1 1 Snap Ring Retainer 3 K9213FB...

Page 123: ......

Page 124: ...tice IR810G General Purpose model Infrared Gas Analyzer CMPL 11G06C01 01EN 1st Edition Oct 2023 YK 5 3 2 4 1 Item Part No Qty Description 1 A1513EF 1 Fuse 5A 2 Y9011EV 1 1 Snap Ring Retainer 3 K9213FB...

Page 125: ......

Page 126: ...ion Manual Title IR800G IR810G Infrared Gas Analyzer Operation and Installation Manual No IM 11G06A01 02EN Edition Date Remark s 1st Oct 2023 Newly published Yokogawa Electric Corporation 2 9 32 Nakac...

Page 127: ...Blank Page...

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