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<7. EXPLOSION-PROTECTED TYPE INSTRUMENTS>

7-1

IM 01R01B30-00E-E 8th edition November 01, 2019-00

All Rights Reserved. Copyright © 2003, Rota Yokogawa

7. Explosion-protected Type Instruments

This is only applicable to the countries in European Union.

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Содержание ROTAMETER RAKD

Страница 1: ...User s Manual Model RAKD Small Metal ROTAMETER IM 01R01B30 00E E Rota Yokogawa GmbH Co KG Rheinstr 8 D 79664 Wehr Germany IM 01R01B30 00E E Copyright 2003 RYG 8th edition November 2019 RYG ...

Страница 2: ...measurement 1 4 1 7 Overview 1 5 2 Precautions 2 1 2 1 Transportation and Storage 2 1 2 2 Installation 2 1 3 Installation 3 1 3 1 Installation in the pipeline 3 1 3 2 Wiring 3 1 3 2 1 Connecting diagrams 3 1 3 2 2 Conductor connection with Quickon 3 3 3 2 3 Conductor M12 connection Option A29 or A30 3 6 4 Start of operation 4 1 4 1 Hints on flow rate measurement 4 1 4 2 Pulsation and pressure shoc...

Страница 3: ...lation 7 5 7 3 Intrinsically safe ATEX RAKD for use in zone 2 KS3 7 10 7 4 Intrinsically safe IECEx certified RAKD ES1 7 11 7 4 1 Technical data 7 11 7 4 2 Installation 7 13 7 5 Intrinsically safe INMETRO certified RAKD US1 7 15 7 5 1 Technical data 7 15 7 5 2 Marking 7 16 7 5 3 Installation 7 17 7 6 Intrinsically safe FM USA components FS1 7 18 7 7 Intrinsically safe NEPSI China certified RAKD NS...

Страница 4: ... Safety Instrumented Systems Installation A1 1 A1 1 Scope and Purpose A1 1 A1 2 Using the Rota Yokogawa RAKD variable area flowmeter A1 1 A1 2 1 Safety Function A1 1 A1 2 2 Diagnostic Response Time A1 2 A1 2 3 Setup A1 2 A1 2 4 Proof Testing A1 2 A1 2 5 Repair and replacement A1 3 A1 2 6 Startup Time A1 3 A1 2 7 Reliability data A1 3 A1 2 8 Lifetime limits A1 3 A1 2 9 Environmental limits A1 3 A1 ...

Страница 5: ...ent or system problems NOTE Calls your attention to information that should be referred to in order to know the operations and functions of the instrument Symbols Meaning Indicates a hazard documentations must be consulted Indicates important information Placeholder Warning that requires reading the documentation Before use read this manual thoroughly and familiarize yourself fully with the featur...

Страница 6: ...s operated in faulty conditions its safety and function may be impaired For this reason the following must be observed Operate the flow meter only when in good working order If its operational performance changes unexpectedly check flow meter for faults Do not undertake unauthorized conversions or modifications on the flow meter Eliminate faults immediately Use only original spare parts General sa...

Страница 7: ...osion and or corrosion are not taken into account Removal of material from the flow meter with power tools such as drills or saws is not permitted Any repair modification replacement or installation of replacement parts is permitted only so long as it is in keeping with this user s manual Other work must be first authorized by Rota Yokogawa Rota Yokogawa does not assume liability for damage caused...

Страница 8: ...vice In case of problems errors or damage that result from unprofessional or insufficient maintenance by the customer for example if water or foreign particles enter the device due to opening the device cover In case of problems errors or damage that result from use or from performing maintenance work on the device in a location other than the installation location specified by Yokogawa In case of...

Страница 9: ...ogawa Example for scale 1 7 Overview F11 EPS Tube Indicator Pointer Scale Limit switch MIN below scale Limit switch MAX below scale Cable connection Quickon Flow scale Flow unit Fluid data Serial number Model code Production year and month Ex ia IIC T6 T4 Gb Customer specific marking Explosion proof identification ...

Страница 10: ...ds such as solenoid valves Alternating magnetic fields 10 Hz as well as homogeneous static magnetic fields in the area of the RAKD like the geomagnetic field have no influence Asymmetric ferromagnetic bodies of considerable mass e g steel girders should be kept at a distance of at least 250 mm from the RAKD To avoid interference the distance between two adjacent RAKDs must be at least 120 mm Do no...

Страница 11: ... mm for cone sizes 52 and 53 To avoid float bouncing in case of gas applications attend to VDI VDE 3515 sheet 3 For devices without valve use a throttle either in the inlet or outlet to install at that side with the bigger volume For installation of several instruments in parallel tubes ensure that the distance between the middle axis is at least 120 mm to avoid magnetic influence The distance to ...

Страница 12: ...L L F G T Rotameter RAKD Electronic transmitter E 4 to 20 mA Power supply U 14 to 30 V DC RL U 14 V 20 mA Output 4 to 20 mA T S QUICKON connector Fail safe power supply Alternatively power supply option WxE can be used Limit switch K6 K7 1 2 BU BN S Alternatively transmitter power supply option UT can be used Fig 3 3 RAKD with Quickon connector and standard limit switches Rotameter RAKD T80 BU 2 B...

Страница 13: ... K3 K7 K8 Limit switch MAX Lower connector 1 2 T K1 K3 K6 K8 Limit switch MIN Power supply acc EN 60947 5 6 Namur Power supply U 14 to 30 V DC RL U 14 V 20 mA Output 4 to 20 mA Power supply acc EN 60947 5 6 Namur or Fail safe power supply L L F G P P Rotameter RAKD 4 to 20 mA EN 60947 5 6 Namur Pulse output BU BN Limit switch 2 3 1 3 1 2 4 4 BU BN Limit switch Power supply acc EN 60947 5 6 Namur o...

Страница 14: ...th to a length of approx 15 mm fig 3 6 and slide the union nut 1 the cap 2 and the rubber seal 3 onto the conductor Fig 3 6 Fig 3 7 Slide the rubber seal as far as the rim of the insulation and then slide the cap onto the rubber seal This provides the strain relief for the conductor fig 3 7 To connect the conductor please observe in particular the following steps ...

Страница 15: ...1 2 Cut off the projecting core ends Make sure that the core ends are flush with the splice ring 5 they can protrude by up to 3 mm but must not be too short Insert the prepared conductor into the QUICKON contact carrier 4 Turn the conductor with the splice ring until the coding noses fit exactly into the corresponding guides fig 9 Close the gland by tightening the union nut This presses the core e...

Страница 16: ...ry delivered with option A30 Pin assignment Tab 3 3 Connections to the M12 connectors for the respective equipment configuration Connection Indicator Type Option Signal Upper connector 1 2 E Electronic transmitter 4 to 20 mA supply Upper connector 3 4 E CP Electronic transmitter pulse output Lower connector 1 2 T E K2 K3 K6 K8 Limit switch MIN Lower connector 3 4 T E K1 K3 K7 K8 Limit switch MAX F...

Страница 17: ...ed If the RAKD is operated outside the given viscosity independent range the viscosities at the previous and new state of operation as well as the mass and diameter of the float have to be taken into account To establish a new scale please contact your Yokogawa representative 4 2 Pulsation and pressure shock To avoid damage of the float and the stopper do not use magnetic valves During start up in...

Страница 18: ...set by adjusting the switching direction of the power supply The concerning 2 channel power supplies are Option W1B KFA5 SR2 Ex2 W Option W2B KFA6 SR2 Ex2 W Option W4B KFD2 SR2 Ex2 W The following table shows the assignment Function Switching direction of power supply Channel 1 Channel 2 Channel 1 Channel 2 MIN MAX S1 position I S2 position I MIN MIN S1 position I S2 position II MAX MAX S1 positio...

Страница 19: ...t be removed from the pipeline For all kind of intervention in the Rotameter e g tightening the packing 11 of the valve the pressures in pressurized pipelines has to be reduced Ensure that the counter screw is tightened after screwing the valve Disassembling the tube Please perform the following steps to clean the measuring tube and the float Disassemble the Rotameter from the pipe Unscrew hollowe...

Страница 20: ...controller Fig 6 2 RAKD with valve and controller F61 EPS F62 EPS No in Fig 6 1 and 6 2 Part 1 Tube for unit with valve and controller 2 Socket 3 Float stop 4 Cone 5 Float 6 Threaded bold 7 Gasket 8 Screw sealing plug 9 10 11 12 13 Packing for valve 14 Indicator 15 Nut M5 16 19 Nozzle 17 20 Cutting ring fitting 18 Controller 21 Tube for unit without valve and controller ...

Страница 21: ...al no code and data of new parts Switch off power supply Remove the cover of the indicator Do not bend or twist the pointer on its axis Exchange of scale Untighten the screw of the scale Remove the screw and the small cover Pull the scale out of the indicator to the left in which the scale raised on the right to raise it from the 2 pins Shove the new scale correspondingly below the pointer from th...

Страница 22: ...ms with the mechanical housing execute test acc fig 6 3 If the indicated countermeasure do not remedy the fault or in case of troubles which cannot be remedied by the user please contact your YOKOGAWA service center Fig 6 3 Has the pointer too much fric on Test 1 Replace indicator and send to Service yes no Is the correct scale mounted Mount correct scale no yes Is float blocked Remove metering tu...

Страница 23: ...dance with legal requirements Shipment repair and inspection of the equipment sent can only be carried out under the condition that this does not pose any danger to the environment or personnel YOKOGAWA can only process your returned RAKD if you attach a declaration of decontamination according to the following sample If the unit has been in contact with corrosive poisonous flammable or water poll...

Страница 24: ...he outside of the packaging you use for shipment Customer data Company Address Contact person E Mail Phone no Fax no Reference Order no Instrument data Type Serial no Type Serial no If not enough note on separate sheet Process data Process medium Medium is toxic corrosive explosive biological hazardous unknown if dangerous non hazardous Remarks Cleaning agent Kind of cleaning Other remarks Reason ...

Страница 25: ...R01B30 00E E 8th edition November 01 2019 00 All Rights Reserved Copyright 2003 Rota Yokogawa 7 Explosion protected Type Instruments This is only applicable to the countries in European Union GB DK I E NL SF P F D S LT LV PL EST SLO H BG RO M CZ SK GR ...

Страница 26: ...is EAC Ex certified The RAKD must be connected to an intrinsically safe certified power supply with a maximum voltage and output power below the maximum values of the RAKD The combined internal inductance and capacity of the RAKD and connecting cables must be less than the permitted external inductance and capacity of the power supply Accordingly the limit switches and the pulse output have to be ...

Страница 27: ...s are given according to Directive 2014 34 EU ATEX Type of protection Intrinsically safe Ex ia IIC T6 T4 Gb Identification in accordance with regulation 2014 34 EU ATEX II 2 G Data of electronic transmitter Ambient temperature 25 C to 65 C Safety relevant maximum values Supply current output Maximum voltage Ui 30 V Maximum current Ii 100 mA Maximum power Pi 750 mW Inner inductance Li 0 73 mH Inner...

Страница 28: ...nected limit switch as specified above For example the type KFA6 SR2 Ex option W2 according certificate PTB 00ATEX2081 230 V AC supply or the type KFD2 SR2 Ex option W4 according certificate PTB 00ATEX2080 24 V DC supply can be used Temperature specification Table 7 2 Configura tion Max ambient temperature Max process temperature Temperature class Transmitter 4 to 20 mA Pulse 65 C 65 C T6 50 C 80 ...

Страница 29: ...e limit switch alternatively Supply 230 V 115 V AC Output 4 to 20 mA C 150 nF Ex ia IIC T6 T4 Gb L 150 µH P 64 mW I 25 mA U 16 V i i i i i C 86 nF L 5 2 mH U 27 3 V P 0 597 W Ex ia IIC I 87 6 mA o o o o o I 100 mA P 0 75 W C 2 4 nF U 30 V L 0 73 mH 4 to 20 mA Ex ia IIC T6 T4 Gb i i i i i 4 to 20 mA SC2 N0 KEMA 00ATEX1037X Limit switch option K1 K2 I 20 mA P 64 mW C 0 nF U 16 V L 0 mH Pulse output ...

Страница 30: ...smitter E80 I 100 mA P 0 75 W C 2 4 nF U 30 V L 0 73 mH 4 to 20 mA Ex ia IIC T6 T4 Gb i i i i i I 20 mA P 64 mW C 0 nF U 16 V L 0 mH Pulse output Ex ia IIC T6 T4 Gb KEMA 00ATEX1037X i i i i i PTB 00ATEX 2018 Transmitter power supply option UT RN221N B1 C 86 nF L 5 2 mH U 27 3 V P 0 597 W Ex ia IIC I 87 6 mA o o o o o EN 60947 5 6 Namur Limit switch Pulse output C 150 nF Ex ia IIC T6 T4 Gb L 150 µH...

Страница 31: ...i i i i i C 2320 nF I 19 1 mA P 51 mW U 10 6 V L 97 mH Ex ia Ga IIC o o o o o Hazardous area Safe area 6 4 11 10 12 Limit switch MIN T S QUICKON connector Fig 7 3 RAKD with ATEX approval option KS1 with standard limit switches and AC power supply 14 3 1 15 8 7 9 U Limit switch MAX EN 60947 5 6 Namur Rotameter RAKD T80 Limit switches Supply 24 V DC SC2 N0 KEMA 00ATEX1037X Limit switch option K1 K2 ...

Страница 32: ...7 W Ex ia IIC I 87 6 mA o o o o o L L F G T BU BN S Rotameter RAKD Limit switch Supply 24 V DC 115 V AC or 230 V AC or KEMA 00ATEX1037X Electronic transmitter E80 I 100 mA P 0 75 W C 2 4 nF U 30 V L 0 73 mH 4 to 20 mA Ex ia IIC T6 T4 Gb i i i i i Limit switch power supply option W2E or W4E PTB 00ATEX 2043 230 115 V AC KHA6 SH Ex1 230 115 V AC C 3 6 µF I 16 8 mA P 41m W U 9 56 V L 130 mH Ex ia Ga I...

Страница 33: ...r supply option W2E KHA6 SH Ex1 for 230 115V AC or power supply option W4E KFD2 SH Ex1 for 24 V DC can be used Limit switch power supply option W2F or W4F 2 x KHA6 SH Ex1 230 115 V AC 2 x KFD2 SH Ex1 24 V DC PTB 00ATEX 2043 230 115 V AC PTB 00ATEX 2042 24 V DC EN 60947 5 6 Namur 23 24 24 23 Hazardous area Safe area Limit switch MIN 12 10 12 10 U T S QUICKON connector C 30 nF Ex ia IIC T6 T4 Gb L 1...

Страница 34: ...ly current output Maximum voltage Ui 30 V Maximum current Ii 100 mA Maximum power Pi 750 mW Inner inductance Li 0 73 mH Inner capacity Ci 2 4 nF Pulse output Maximum voltage Ui 16 V Maximum current Ii 20 mA Maximum power Pi 64 mW Inner inductance Li 0 mH Inner capacity Ci 0 nF Fig 7 7 Protection circuit for a power supply to meet the maximum values Data of limit switches Safety relevant maximum va...

Страница 35: ...ated for zone 0 Type of protection Intrinsically safe Ex ia IIC T6 T4 Gb Data of electronic transmitter Ambient temperature 25 C to 65 C Safety relevant maximum values Supply current output Maximum voltage Ui 30 V Maximum current Ii 100 mA Maximum power Pi 750 mW Inner inductance Li 0 73 mH Inner capacity Ci 2 4 nF Pulse output Maximum voltage Ui 16 V Maximum current Ii 20 mA Maximum power Pi 64 m...

Страница 36: ...ent and power of the connected limit switch as specified above For example the type KFA6 SR2 Ex option W2 according certificate IECEx PTB11 0031 230 V AC supply or the type KFD2 SR2 Ex option W4 according certificate IECEx PTB11 0034 24 V DC supply can be used Temperature specification Table 7 5 Configura tion Max ambient temperature Max process temperature Temperature class Transmitter 4 to 20 mA...

Страница 37: ...mit switch Pulse output Pulse output or one limit switch alternatively Supply 230 V 115 V AC Output 4 to 20 mA C 150 nF Ex ia IIC T6 T4 Gb L 150 µH P 64 mW I 25 mA U 16 V i i i i i I 100 mA P 0 75 W C 2 4 nF U 30 V L 0 73 mH 4 to 20 mA Ex ia IIC T6 T4 Gb i i i i i 4 to 20 mA SC2 N0 Limit switch option K1 K2 I 20 mA P 64 mW C 0 nF U 16 V L 0 mH Pulse output Ex ia IIC T6 T4 Gb i i i i i IECEx DEK 12...

Страница 38: ...MIN F MAX S T If only one limit switch is used power supply option W4A KFD2 SR2 Ex1 W can be used Limit switch power supply option W4B KFD2 SR2 Ex2 W C 150 nF Ex ia IIC T6 T4 Gb L 150 µH P 64 mW I 25 mA U 16 V i i i i i C 241 nF I 13 mA P 34 mW U 10 5 V L 210 mH Ex ia Ga IIC o o o o o 2 1 2 1 IECEx DEK 12 0003X IECEx PTB 11 0034 Hazardous area Safe area 6 4 11 10 12 Limit switch MIN T S QUICKON co...

Страница 39: ... zone 2 Type of protection Intrinsically safe Ex ia IIC T6 T4 Gb Data of electronic transmitter Ambient temperature 25 C to 65 C Safety relevant maximum values Supply current output Maximum voltage Ui 30 V Maximum current Ii 100 mA Maximum power Pi 750 mW Inner inductance Li 0 73 mH Inner capacity Ci 2 4 nF Pulse output Maximum voltage Ui 16 V Maximum current Ii 20 mA Maximum power Pi 64 mW Inner ...

Страница 40: ...K3 INMETRO TÜV 14 0352 X SJ2 SN for K6 to K8 Intrinsic safe power supply for the electronic transmitter The power supply for the electronic transmitter is an associated apparatus that may not be installed in the hazardous area and it may not exceed the safety relevant maximum values for voltage current and power of the electronic transmitters as specified above Intrinsic safe power supply for the ...

Страница 41: ...to 20 mA C 150 nF Ex ia IIC T6 T4 Gb L 150 µH P 64 mW I 25 mA U 16 V i i i i i I 100 mA P 0 75 W C 2 4 nF U 30 V L 0 73 mH 4 to 20 mA Ex ia IIC T6 T4 Gb i i i i i 4 to 20 mA SC2 N0 Limit switch option K1 K2 I 20 mA P 64 mW C 0 nF U 16 V L 0 mH Pulse output Ex ia IIC T6 T4 Gb i i i i i INMETRO DEKRA 15 0005X INMETRO DEKRA 15 0005X Hazardous area Safe area T S QUICKON connector Limit switch power su...

Страница 42: ... switches are intrinsically safe devices They are certified by Pepperl Fuchs for Intrinsically safe Cl I Div 1 GP A B C D T6 Ta 60 C Cl II Div 1 GP E F G Cl III Div 1 Nonincendive Cl I Div 2 GP A B C D T5 Ta 50 C Cl II Div 1 GP E F G Cl III Div 1 Maximum Entity Field Wiring Parameters see FM control drawing 116 0165 on page 7 19 and 7 20 for intrinsic safety see FM control drawing 116 0155 on page...

Страница 43: ...Imax or Ii for the intrinsically safe apparatus and the approved values of Ca or Co and La or Lo for the associated apparatus are greater than Ci Ccable Li Lcable respectively for the intrinsically safe apparatus 3 Barriers shall not be connected to any device that uses or generates in excess of 250V rms or DC unless it has been determined that the voltage is adequately isolated from the barrier 4...

Страница 44: ...C 53 C SC3 5 N0 Ya 150 nF 150 µH 55 C 67 C 95 C 48 C 60 C 88 C 23 C 35 C 63 C 6 C 18 C 46 C SJ1 8 N Ya 30 nF 100 µH 73 C 88 C 100 C 67 C 82 C 100 C 45 C 60 C 78 C 30 C 45 C 57 C SJ2 Na 30 nF 100 µH 56 C 68 C 96 C 49 C 61 C 89 C 28 C 40 C 68 C 13 C 25 C 53 C SJ2 SNa 30 nF 100 µH 73 C 88 C 100 C 66 C 81 C 100 C 45 C 60 C 78 C 30 C 45 C 57 C SJ2 S1Na 60 nF 100 µH 73 C 88 C 100 C 66 C 81 C 100 C 45 C ...

Страница 45: ... 7 EXPLOSION PROTECTED TYPE INSTRUMENTS 7 21 IM 01R01B30 00E E 8th edition November 01 2019 00 All Rights Reserved Copyright 2003 Rota Yokogawa Control Drawing limit switches nonincendive ...

Страница 46: ...ltage Ui 16 V Maximum current Ii 20 mA Maximum power Pi 64 mW Inner inductance Li 0 mH Inner capacity Ci 0 nF Data of limit switches Safety relevant maximum values Table 7 8 Standard K1 to K3 Fail safe K6 to K8 Type 2 Type 3 Type 2 Type 3 Ui V 16 16 16 16 Ii mA 25 52 25 52 Pi mW 64 169 64 169 Ci nF 150 150 30 30 Li µH 150 150 100 100 Temperature specification Table 7 9 Configuration Max ambient te...

Страница 47: ...mum voltage Ui 16 V Maximum current Ii 20 mA Maximum power Pi 64 mW Inner inductance Li 0 mH Inner capacity Ci 0 nF Data of limit switches Safety relevant maximum values Table 7 10 Standard K1 to K3 Fail safe K6 to K8 Type 2 Type 3 Type 2 Type 3 Ui V 16 16 16 16 Ii mA 25 52 25 52 Pi mW 64 169 64 169 Ci nF 150 150 30 30 Li µH 150 150 100 100 Temperature specification Table 7 11 Configuration Max am...

Страница 48: ... The dust explosion proof for the limit switches is only available if ordered without electronic transmitter only with housing type T 7 10 Intrinsically safe RAKD with TS mark approval Taiwan Registration Document ML041200703XN3 Option ES1 must be selected Same data as IECEx certified type ES1 For export to Taiwan please contact your Yokogawa representative regarding Taiwan Safety Mark 7 11 Intrin...

Страница 49: ...operator is responsible for ensuring that the flowmeter is operated safely as regards the temperature and pressure of the products used In case of operation with flammable products the measuring units must be included in the periodic pressure tests of the system If conductive fluids are used with metal as material of wetted parts the Rotameter must be connected to the potential equalization CAUTIO...

Страница 50: ...ting conditions The operator is responsible for ensuring that the flowmeter is operated safely as regards the temperature and pressure of the products used In case of operation with flammable products the measuring units must be included in the periodic pressure tests of the system If conductive fluids are used with metal as material of wetted parts the Rotameter must be connected to the potential...

Страница 51: ...ameter settings A1 2 Using the Rota Yokogawa RAKD variable area flowmeter A1 2 1 Safety Function Suitable for use in Safety Instrumented Systems are the versions listed in table 1 only The safety related data listed in this manual does not apply to other versions of RAKD Versions of RAKD suitable for Safety Instrumented Systems Table A1 1 V1 RAKD standard RAKD SS NNN T8 NNN V2 RAKD with head valve...

Страница 52: ...e documented and this documentation should be part of a plant safety management system Failures that are detected should be reported to Yokogawa Proof test for variable area flowmeter RAKD with inductive limit switches When all the tests listed above are executed a proof test coverage of approximately 99 of possible DU failures in the variable area flowmeter RAKD can be claimed The following tools...

Страница 53: ...the average interval between dangerous conditions occurs infrequently The Rota Yokogawa RAKD variable area flowmeter is suitable for application in SIL1 safety functions for use in a simplex 1oo1 configuration depending on the PFDAVG calculation of the entire Safety Instrumented Function A1 2 8 Lifetime limits The expected lifetime of the Yokogawa Rota Yokogawa RAKD variable area flowmeter is 10 y...

Страница 54: ...ion Verification The demonstration for each phase of the life cycle that the output deliverables of the phase meet the objectives and requirements specified by the inputs to the phase The verification is usually executed by analysis and or testing Validation The demonstration that the safety related system s or the combination of safety related system s and external risk reduction facilities meet ...

Страница 55: ...g a Diagnostic Coverage DC of 99 a mission time of 10 years and a Mean Time To Restoration of 24 hours Table A1 2 Summary for RAKD V1 with fail safe limit switches 3 Failure rates Profile 3 Fail Safe Detected λSD 0 FIT Fail Safe Undetected λSU 50 FIT Fail Dangerous Detected λDD 4 FIT Fail Dangerous Undetected λDU 62 FIT SFF4 57 MTBF 486 years SIL AC5 SIL1 Safety metrics according to ISO 13849 16 M...

Страница 56: ...AT 1 Performance Level required PLr c Performance Level calculated 1 05E 07 1 h T Proof 1 year T Proof 5 years T Proof 10 years PFDAVG 4 82E 04 PFDAVG 2 23E 03 PFDAVG 4 42E 03 Table A1 4 Summary for RAKD V2 with fail safe limit switches 3 Failure rates Profile 3 Fail Safe Detected λSD 0 FIT Fail Safe Undetected λSU 51 FIT Fail Dangerous Detected λDD 4 FIT Fail Dangerous Undetected λDU 84 FIT SFF4 ...

Страница 57: ...T 1 Performance Level required PLr c Performance Level calculated 1 27E 07 1 h T Proof 1 year T Proof 5 years T Proof 10 years PFDAVG 5 87E 04 PFDAVG 2 72E 03 PFDAVG 5 39E 03 Table A1 6 Summary for RAKD V3 with fail safe limit switches 3 Failure rates Profile 3 Fail Safe Detected λSD 0 FIT Fail Safe Undetected λSU 51 FIT Fail Dangerous Detected λDD 4 FIT Fail Dangerous Undetected λDU 164 FIT SFF4 ...

Страница 58: ...3 PFDAVG 8 89E 03 3 The switching contact output is connected to a fail safe NAMUR amplifier The failure rates of the amplifier are not included in the listed failure rates 4 The complete sensor subsystem will need to be evaluated to determine the overall Safe Failure Fraction The number listed is for reference only 5 SIL AC architectural constraints means that the calculated values are within the...

Страница 59: ...arraq Kingdom of BAHRAIN Phone 973 17358100 Fax 973 17336100 Headquarters 2 9 32 Nakacho Musashino shi Tokyo 180 8750 JAPAN Phone 81 422 52 5555 Branch Sales Offices Osaka Nagoya Hiroshima Kurashiki Fukuoka Kitakyusyu Head Office 12530 West Airport Blvd Sugar Land Texas 77478 USA Phone 1 281 340 3800 Fax 1 281 340 3838 Georgia Office 2 Dart Road Newnan Georgia 30265 USA Phone 1 800 888 6400 1 770 ...

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