Fuji Electric ZaFe Скачать руководство пользователя страница 1

Thermal ConduCTiviTy  

GaS analyZer

<FlameProoF TyPe>

TyPe:  ZaFe

Instruction Manual

INZ-TN4ZAFE-E

Содержание ZaFe

Страница 1: ...Thermal ConduCTiviTy GaS analyZer FlameProoF TyPe TyPe ZaFe Instruction Manual INZ TN4ZAFE E ...

Страница 2: ...ponsibility for a trouble caused by such a modification This instruction manual shall be stored by the person who actually uses the gas analyzer After reading the manual be sure to store it at a place easier to access This instruction manual should be delivered to the end user without fail Manufacturer Fuji Electric Co Ltd Type Described in Fuji Electric s company nameplate on main frame Date of m...

Страница 3: ...f type do not use it in a place where explosive gases always exist zone 0 to prevent explosion fire or other serious accidents CAUTION This unit should be installed in a place which conforms to the conditions noted in the instruction manual Otherwise it may cause electric shocks fire or malfunction of the unit During installation work care should be taken to keep the unit free from entry of cable ...

Страница 4: ...ct pipes correctly referring to the instruction manual Exhaust should be led outdoors so that it will not remain in the locker and installation room Exhaust from the analyzer should be relieved in the atmospheric air in order that an unnecessary pressure will not be applied to the analyzer Otherwise any pipe in the analyzer may be disconnected to cause gas leakage Caution on use DANGER If there is...

Страница 5: ... shock hazard or fault may be caused Others CAUTION If the cause of any fault cannot be determined despite reference to the instruction manual be sure to contact your dealer or Fuji Electric s technician in charge of adjustment If the instrument is disassembled carelessly you may have a shock hazard or injury Do not use a replacement part other than specified by the instrument maker Otherwise adeq...

Страница 6: ...ocedure 4 1 5 DESCRIPTION OF DISPLAy AND OPERATION PANEL 5 1 5 1 Name and description of operation panel 5 1 5 2 Overview of display and operation panels 5 2 5 3 Overview of display screen 5 3 5 4 General operation 5 5 6 SETTING AND CALIBRATION 6 1 6 1 Calibration setting 6 1 6 2 Alarm setting When concentration alarm contact output has been selected 6 4 6 3 Setting of auto calibration When auto c...

Страница 7: ...vi INZ TN4ZAFE E 8 TROUBLESHOOTING 8 1 8 1 Error message 8 1 9 SPECIFICATIONS 9 1 9 1 General specifications 9 1 9 2 Code symbols 9 4 9 3 Outline diagram 9 6 ...

Страница 8: ...functions have been achieved with the microprocessor installed and high accuracy large LCD adopted is ideal for the management and control of production processes 1 2 Description of flameproof This product has passed the test conducted by the testing certification body registered to the Minister as an explosion protected electrical equipment A certification label and a nameplate including necessar...

Страница 9: ...utlet Port for connecting the pipe for discharging the gas after analysis 4 Terminal block option Contact input output terminals 5 Terminal block stan dard Power terminal and measured output terminals 6 Connector for communi cation RS 232C communication interface 7 Specification nameplate Type and specifications are described 8 Grounding terminal Used as a frame ground FG 9 Operation key Used to o...

Страница 10: ...chamber whereas temperature and resistance of the platinum wire do not change in the reference chamber in which thermal conductivity of a reference gas is kept always constant Therefore the Wheatstone bridge generates a voltage signal depending on kinds and concentration of the sample gas The thermal conductivity gas analyzer is constructed as shown in Fig 2 1 Table 2 1 lists thermal conductivitie...

Страница 11: ...fur dioxide SO2 34 4 Carbon monoxide CO 96 Chlorine Cl2 32 3 Fig 2 2 Indicating Deviation due to Interfering Components in Thermal Conductivity Gas Analyzer Interfering component Indicating Deviation due to 1 of interfering component VOL H2 indicator CH4 indicator Ar indicator CO2 indicator 1 H2 5 8 6 5 8 0 1 CH4 0 17 1 15 1 38 1 SO2 0 31 1 8 2 1 2 5 1 Ar 0 15 0 87 1 2 1 CO2 0 125 0 725 0 83 1 O2 ...

Страница 12: ...s 10 to 60 C and humidity is less than 95 RH Install the main unit 100mm or more away from the surrounding wall Please leave enough space in front so that the cover can be opened at maintenance It is also required to ensure enough space for wiring under the case 3 InstALLAtIon Although this gas analyzer is explosion proof type do not use it in a place where explosive gases always exist zone 0 to p...

Страница 13: ...or less no condensation Storage conditions Ambient temperature 20 to 60 C Ambient humidity 95 RH or less no condensation 3 2 Installation of analyzer Installation method Mounting method 286 4 M12 402 Fuji Electric Instruments Co Ltd Fuji Electric systems Co Ltd Mounting panel 1 Accessories of main flame 2 No Name Quantity 1 Analyzer main flame 1 2 Hexagon bolt M12 50 4 Code Standard tightening tor...

Страница 14: ...y result To prevent this be sure to use clean pipes and joints In piping the following precautions should be observed Wrong piping may cause gas leakage If the leaking gas contains a toxic component there is a risk of serious accident being induced Also if combustible gas is contained there is a danger of explosion fire or the like occurring Connect pipes correctly referring to the instruction man...

Страница 15: ...midification is supplied properly The gas flow rate should be kept constant within the range of 0 4L min 0 05L min High speed responce 1L min 0 05L min Sampling gas outlet Measured gas is exhausted after measurement Connect the pipe so that the gas may escape through the gas outlet into the atmo sphere or equivalent INLET OUTLET Gas inlet Gas outlet ...

Страница 16: ...osive gas such as Cl2 F2 or HCl is contained in sample gas the service life of analyzer will be shortened So avoid such gases 5 TSample gas temperature is allowed within a range from 0 to 50 C Pay attention not to flow hot gas directly into the analyzer 3 4 2 sampling gas flow rate A flow rate of sampling gas must be 0 4L min 0 05L min high speed responce 1L min 0 05L min A flow meter should be pr...

Страница 17: ...own in Fig 3 2 Since a system configuration depends upon measured gas consult with Fuji Electric Co Drain trap Ball value Flow meter Solenoid value Solenoid value Span calibration gas Zero calibration gas Membrane filter Analyzer ZAFE Exhaust Note If auto calibration function is not provided use a change cock Aspirator Sampling gas Electronic dehumidifier Note Fig 3 2 Example of sampling system co...

Страница 18: ...l and connect the ground wire to the ground ing terminal standard terminal 3 Perform class D grounding Use solderless terminals for M3 5 to connect the cables to the terminals Wiring work must be performed 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 fault...

Страница 19: ...e Note The measured value output signal of this instrument is not isolated To eliminate the interference from unnecessary signals and the effect of external interference we recommend you to isolate signals 3 5 3 Corrective input optional terminals 3 4 If interference corrective calculation is specified at the time of placement of an order interference gas CO2 or CH4 measured value is input 1 to 5 ...

Страница 20: ... Contact output 4 Contact output 5 Contact output 1 1 11 2 12 3 13 4 14 5 15 6 16 7 17 8 18 9 19 10 20 Option 13th digit A and 14th digit A C E Standard L N E Measured value output as specified 4 to 20mA DC 0 to 1V DC 0 to 10mV DC Power supply 100 to 240V AC 50 60Hz Grounding terminal L AC POWER V SOURCE OUT PUT N PE 101 102 M3 5 screw M3 5 screw RS232C communication option Terminal number 2 3 5 O...

Страница 21: ...ion Pump ON OFF contact Zero calibration contact Span calibration contact Output hold function with hold ON setting Pump ON OFF contact Zero calibration contact Span calibration contact Output hold function with hold ON setting ON OFF ON OFF OFF SPAN ENT ENT 2 In case of automatic calibration Output signal hold Hold extension time Pump ON OFF contact Zero calibration contact Span calibration conta...

Страница 22: ...to set 20 to 30 kPa regularly and then open the stop valve handle slowly to allow the gas to flow Handle Outlet pressure indicator Flow meter Inlet pressure indicator Pressure regulation handle Stop valve handle Cap nut Packing High pressure gas cylinder Cap nut Pressure regulator WR11FS 2 Piping 1 Connect a joint and a tube For example pipe of ø 4 ø 6 SUS to the outlet of the pressure reducing va...

Страница 23: ... front panel 2 About 30 minutes warm up operation About 30 minutes are needed until the operating performance is stabilized Warm up operation should be continued with the power ON 3 Setting of various set values Set required set values according to Chapter 6 Setting and calibration 4 Zero and span calibration Perform zero calibration and span calibration after warm up operation See Chapter 6 7 Man...

Страница 24: ...etting items are displayed Controls The configuration is as shown below ENT ESC MODE Name Description Name Description 1 MODE key Used to switch the mode 4 UP key Used to change the selected item by moving the cursor and to increase numeral value 2 ESC key Used to return to a previous screen or cancel the setting mid way 5 ENT key Used for confirmation of selected items or values and for execution...

Страница 25: ...libration mode Zero calibration mode User mode Note Selection of items Start time Cycle Flow time Auto calibration ON OFF Automatic calibration cancellation Selection of items Date Setting date Time Current time setting Key lock Key lock ON OFF Backlight Backlight OFF time Remote range Remote range ON OFF Hold ON OFF Response speed Response time fillter Maintenance mode Maintenance mode entry of p...

Страница 26: ...asured concentration values are displayed in a bar graph The max scale of the bar graph shows the selected measuring range 4 Lower limit alarm concentration alarm on selection of concentration alarm contact output The range and value of the lower limit alarm are displayed in a bar graph 5 Upper limit concentration alarm on selection of concentration alarm contact output The range and value of the ...

Страница 27: ...layed In the message display area messages associated with operation are displayed In the setting item and selection item display area items or values to be set are displayed as required To work on the area move the cursor to any item by using and keys Cursor Status display area Message display area Setting item selection item display area Menu display screen ...

Страница 28: ...l 2 171 0 10 CO2 0 50 H2 pre 0 10 1 28 ZERO Cal ENT Gas floes ESC Back Range1 H2 Range2 0 3 vol 0 10 vol ESC MODE 2 Measurement mode Displayed when interference corrective calculation has been selected If interference corrective calculation has been specified the measurement values before and after the interference correc tion and interference gas concentration value are displayed as shown in the ...

Страница 29: ...Calibration Alarm Setting Setting of Auto Calibration Changeover of Range Parameter Setting Select an item with UP DOWN and ENT Back with ESC 5 User mode In user mode the setting menu is dis played Calibration setting Alarm setting on selection of concentration alarm contact output Auto calibration setting Range changeover on selection of 2 range meter Parameter Refer to 6 SETTING AND CALIBRA TION...

Страница 30: ...ode screen Move the cursor to Calibration Setting by pressing the key and then press the ENT key To close Calibration setting or terminate the operation press the ESC key and you will return to the previous screen To close Calibration setting Cal Settings Calibration Value About Calibration Range Select an item with UP DOWN and ENT Back with ESC Cal Settings Cal Value 0 0 0 0 RANGE ZERO SPAN H2 Se...

Страница 31: ...about Calibration Alarm Setting Setting of Auto Calibration Changeover of Range Parameter Setting Select an item with UP DOWN and ENT Back with ESC Cal Settings Calibration Value About Calibration Range Select an item with UP DOWN and ENT Back with ESC Cal Settings Cal Range ENT Select cal range ESC Back Range1 current H2 Range2 0 3 vol 0 10 vol 2 In the Setting about Calibration screen that appea...

Страница 32: ...lecting Current the range alone displayed is calibrated Note When calibration is performed by the Both setting under the normal operating condition prepare a span gas cylinder on the normal operating range side It is recommend to perform span gas calibration in the normal operating range In case of both setting Two cursors will ap pear in both ranges Manual Calibration screen Select both or curren...

Страница 33: ...tem with UP DOWN and ENT Back with ESC 2 After the Alarm Setting screen has ap peared operate the key until the cursor is aligned with a desired item and press the ENT key DO3 is an output terminal number 3 Enter the setting value pressing the or key And then press the ENT key Alarm Setting Upper DO3 Lower DO3 Renge 1 0 900 vol Renge 2 03 00 vol Renge 1 0 200 vol Renge 2 01 00 vol Kind of Alarm Up...

Страница 34: ...ed value exceeds two kinds of upper limit values 6 Two step lower limit value Alarm contact operates only when measured value falls below two kinds of lower limit values ON OFF Alarm function becomes valid with ON and invalid with OFF The upper limit value cannot be set below the lower limit value and the lower limit value cannot beset above the upper limit value If you want to set the upper limit...

Страница 35: ...t Select one lower limit 1 alarm Refer to 6 6 6 Contact output setting for the setting and assignment of contact outputs 1 Upper limit value Alarm range display 1 to 6 Upper limit 1 alarm Lower limit 1 alarm Upper or lower limit alarm Upper limit 1 alarm Upper limit 1 alarm Upper limit 2 alarm Lower limit 1 alarm Lower limit 1 alarm Lower limit 2 alarm 2 Lower limit value One point Select one uppe...

Страница 36: ...UP DOWN and ENT Back with ESC 2 In the Alarm Setting screen that appears select Hysteresis by pressing the key and press the ENT key Enter a numeric value by using the or key and then press the ENT key To close the Hysteresis Setting or cancel the mode midway press the key A previous screen will return To close Hysteresis Setting ESC 0 to 20 of full scale A full scale means each range provides a f...

Страница 37: ...asurement value is in HOLD status Description of setting items Start Time Setting at the first calibration day of the week hour minute Cycle A period between the start time of one calibration and another unit hour day Flow Time Time required for feeding calibration gas to the detector unit ON OFF Auto zero calibration ON or OFF Cycle 1 to 99 hours or 1 to 40 days initial value 7days Flow time 60 t...

Страница 38: ...rt circuit keep at least 1 5 sec 1 5 sec or longer When an auto calibration starts the measurement screen automatically appears Any operation other than forced stop of auto calibration see Item 6 3 2 is not permitted during auto calibration Auto Calibration Cancel cannot be performed with the key lock to ON To cancel auto calibration forcedly set the key lock to OFF and then execute Auto Calibrati...

Страница 39: ...ti Time MON 17 24 Start Time SUN 12 00 Cycle 07 day Flow Time 300 sec ON OFF OFF Select setting item About Auto Cal Time MON 17 24 Start Time SUN 12 00 Cycle 07 day Flow Time 300 sec ON OFF OFF Stop auto calibration Stop with ENT Not with ESC Stop Auto Calibrati 2 In the Setting of Auto Calibration item selection screen that appears point the cursor to Stop Auto Calibration by pressing the key Pre...

Страница 40: ... Calibration Changeover of Range Parameter Setting Select an item with UP DOWN and ENT Range Change ENT Select range ESC Back H2 Range1 Range2 0 3 vol 0 100 vol Range Change Select range with UP DOWN and ENT Back with ESC H2 Range1 Range2 0 3 vol 0 100 vol 2 On the Range Change screen that appears press the ENT key to change over the range 3 Select the range you want to set by using key and press ...

Страница 41: ... Enters passwords to switch to the Maintenance mode Description of setting items 1 To display the User mode press the MODE key in the measurement mode Point the cursor to Parameter Setting by pressing the key Press the ENT key To close the Parameter Setting screen or cancel this mode midway press the key A previous screen will return To close Parameter Setting screen ESC Backlight 5 to 99 min Init...

Страница 42: ...is set to OFF the external input becomes invalid Opening the input gives the High range or short circuiting the input gives the Low range Note In case of 1 range system this function is overridden output Hold By setting an output hold to ON an output signal of each channel are held during the calibration manual calibration and auto calibration and for the gas flow time Regardless of Hold ON OFF se...

Страница 43: ...peration is canceled after the calibration gas is supplied an output hold of the holding extending time will be performed Response time The response time of the electrical system can be changed Note It does not provide exact seconds for the setting time but it gives a guide of the set ting time The setting value can be modified as requested by the customer Maintenance mode To open the maintenance ...

Страница 44: ...m Setting Setting of Auto Calibration Changeover of Range Parameter Setting Select an item with UP DOWN and ENT Parameter Setting Current Date 2013 07 08 Current Time MON 16 19 Kye Loc OFF Back Light ON 99min Output Hold OFF Response Time 01 sec To Maintenance Mode 0000 Select setting item Parameter Setting Input Password to Maintenance Mode Current Date 2013 07 08 Current Time MON 16 19 Kye Loc O...

Страница 45: ...he date and time of occurrence day of the week and time Refer to 8 1 Error message for the contents of errors Maintenance Mode 1 Sensor Input Value 2 Error Log 3 Password Setting 4 Zero off set 5 Station No 01 6 Setting of Digital Out 7 Cal history 8 To Factory Mode Select operating item Maintenance Sensor Input sensor input H2 TEMP 33140 30624 9 1 vol 35 8 C Maintenance Error Log Clear Error Log ...

Страница 46: ...this mode midway press the key A previous screen will return To close Password setting ESC Be sure to remember the password Caution Maintenance Mode 1 Sensor Input Value 2 Error Log 3 Password Setting 4 Zero off set 5 Station No 01 6 Setting of Digital Out 7 Cal history 8 To Factory Mode Select operating item Set Password 0000 2 In the Password Setting screen that appears enter the password by pre...

Страница 47: ...will return To close Station No setting ESC Maintenance Mode 1 Sensor Input Value 2 Error Log 3 Password Setting 4 Zero off set 5 Station No 01 6 Setting of Digital Out 7 Cal history 8 To Factory Mode Select operating item Maintenance Mode Set Station No Allowable 00 to 31 1 Sensor Input Value 2 Error Log 3 Password Setting 4 Zero off set 5 Station No 01 6 Setting of Digital Out 7 Cal history 8 To...

Страница 48: ...to around 3000 counts The zero gas should be delivered when setting offset 1 Select zero off set from the menus in the maintenance mode Maintenance Mode 1 Sensor Input Value 2 Error Log 3 Password Setting 4 Zero off set 5 Station No 01 6 Setting of Digital Out 7 Cal history 8 To Factory Mode Select operating item Factory Mode H2 0 2 Press the ENT key to execute zero off set The displayed value wil...

Страница 49: ...ssword Setting 4 Zero off set 5 Station No 01 6 Setting of Digital Out 7 Cal history 8 To Factory Mode Select operating item Maintenance Digital Out DO1 zero valve DO2 span valve DO3 HL alarm DO4 on calib DO5 fault Select an item 2 In the Setting of Digital Out screen that appears select a desired item by pressing the key and press the ENT key Now you can change the setting 3 Select a desired item...

Страница 50: ...ols in 9 2 Range information For 1 range meter always OFF open For 2 range meter range 1 ON close range 2 OFF open Upper and lower limit alarm Alarm for upper and lower limit in a lump ON during an alarm Lower limit 2 alarm Alarm 2 for lower limit ON during an alarm Lower limit 1 alarm Alarm 1 for lower limit ON during an alarm Upper limit 2 alarm Alarm 2 for upper limit ON during an alarm Upper l...

Страница 51: ...e history of calibration Calibration history of up to 10 items can be recorded Every time a new calibration is performed in this state the oldest calibration history is deleted Factory Mode Cal history ZERO 00208 39794 3 3 17 11 40 7 SPAN 1 0699 44492 3 3 13 10 54 35 coe input Y M D H M S ...

Страница 52: ...libration ESC Caution If Both has been selected for Calibration range action calibration is carried out in both ranges simultaneously 0 2 4 6 8 10 vol 1 28vol H2 2013 02 15 17 24 8 00 2 00 Low alarm 1 28 ZERO Cal ENT Gas flows ESC Back Range1 H2 Range2 0 3 vol 0 10 vol 1 28 ZERO Cal ENT Go on calibration ESC Not calibration Range1 H2 Range2 0 3 vol 0 10 vol 2 Pressing the ENT key turns ON the cont...

Страница 53: ...lose Span Calibration ESC Caution If Both has been selected for Calibration range action calibration is carried out in both ranges simultaneously 0 2 4 6 8 10 vol 1 28vol H2 2013 02 15 17 24 8 00 2 00 Low alarm 1 28 SPAN Cal ENT Gas flows ESC Back Range1 H2 Range2 0 3 vol 0 10 vol 1 28 SPAN Cal ENT Go on calibration ESC Not calibration Range1 H2 Range2 0 3 vol 0 10 vol 2 Pressing the ENT key turns...

Страница 54: ... cell 1 2 1 2 2 1 Standard gas is not withinthe range of the specified flow rate of 0 45 to 0 35 L min or 0 95 to 1 05 L min high speed responce Much clogged Out of zero point Out of the standard point Irrespective of phenomena Irrespective of phenomena Lower indication Replacement of membrane filter Zero point of gas analyzer Span point of gas analyzer Every week Every day Every year Gas analyzer...

Страница 55: ...the unit 2 Open the front cover with the provided opener 3 Remove the fuse by pulling up the fuse holder cap while unscrewing it in counterclockwise direction The fuse is located down right 4 Replace the fuse by a new one 250V AC 1A TEC T time delay type 5 Tighten the fuse holder cap and then turn the knob on the front cover to close the unit Fuse holder ...

Страница 56: ...value is over 50 of full scale Span calibration is not within the allowable range A amount of span calibration difference between indication value and calibrated concentration value is over 50 of full scale Measured values fluctuate too much during zero and span calibration Calibration is abnormal during auto calibration Screen display and operation at the occurrence of error ENT ESC Press the key...

Страница 57: ...ror log file will not be lost or damaged Deletion of error history Press the ENT key on the above screen and the Clear Error Log will be inverted Further pressing the key will clear the error history Errors that occurred New Day of the week and time when an error occurred Component with which the error occurred Old Maintenance Error Log Clear Error Log Next page page 1 Error No 4 WED 11 09 H2 Erro...

Страница 58: ...Gas inlet outlet purge port Rc1 2 or NPT1 2 or G1 2 whichever specified External connection terminal M3 5 screw terminal 9 pin D sub con nector for RS 232C Ex Standard NEPSI Exd IIc T6Gb Performance Repeatability 1 of F S Linearity 2 of F S Drift Zero point within 2 of full scale week H2 meter reference gas N2 Span within 2 of full scale week H2 meter reference gas N2 Response time 90 response Hig...

Страница 59: ...t at each step concentration alarm out put Total 2 points 10 Analyzer error or automatic calibration error alarm output 11 Calibrating status output 12 Range information output only with 2 range meter Contact input 3 non voltage contact inputs ON 0 V OFF 5 V DC current at ON 5 mA Isolated with photo coupler between inputs and internal circuit Not is lated between contact inputs The following actio...

Страница 60: ... x 1 span x 1 Suction pump OFF output in calibration SPST contact suction pump OFF x 1 Remote calibration start input No voltage contact input Automatic calibration is started by applying a non voltage rectangular wave to the remote calibration start input terminal opened after close circuiting for 1 5 sec or longer When contacts open automatic calibration is carried out once Automatic calibration...

Страница 61: ...2 13 N 1415 16 17 18 K L M E A Z 4 5 6 Z A B C 4 Q L M N V P T J 9 8 Z Y L M N V P T J Z A B C D E A Y A Y A C E Indication Japanese English Chinese 15 J E C Response speed Standard response High speed response Note 4 16 A B Number of cable gland None 3 4 5 6 7 8 17 0 3 4 5 6 7 Z Ex Standard NEPSI 18 N See table below Note 1 Reference gas refers to gas other than the component to be measured in sa...

Страница 62: ...calibration start Note 4 Remote range changeover 2 range meter Note 5 Remote measured value output holding Note 6 DI3 DI2 DI1 Any one alarm settable on screen DO1 2 2 Point NO Contact Any one alarm settable on screen 2 Point NO Contact DO1 DO2 DO3 Automatic calibration 14th digit A Concentration alarm 14th digit C Contact output selection Note 7 14th digit E Note 1 Mark Normally Open NO contact No...

Страница 63: ...YAYYACA 3N H 4 20mADC 100 240VAC 50 60Hz 50VA 2012 01 2 0 50 外部導線は 最高許容温度が90 以上のもの を使用するこ と 爆発性ガス雰囲気の存在する おそれがあるときは カバーを開けないこ と カバーを開ける際は 電源を切るこ と Fuji Electric Co Ltd Cable gland for flame proof to order 60 60 For communication For contact input M20 Pitch 1 5 Note ø8 to ø10 cable is suitble Cable gland Conduct conn G1 2 186 40 For power supply For output For contact output For other 402 362 43 Mo...

Страница 64: ...les Div Sales Group Gate City Ohsaki East Tower 11 2 Osaki 1 chome Shinagawa ku Tokyo 141 0032 Japan http www fujielectric com Phone 81 3 5435 7280 7281 Fax 81 3 5435 7425 http www fujielectric com products instruments ...

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