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Yokogawa Electric Corporation

EJX118A and EJX438A
Diaphragm Sealed
Differential Pressure and
Pressure Transmitters

IM 01C25H01-01E

3rd Edition

Содержание EJX118A

Страница 1: ...Y okogawa Electric Corporation EJX118A and EJX438A Diaphragm Sealed Differential Pressure and Pressure Transmitters IM 01C25H01 01E IM 01C25H01 01E 3rd Edition...

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Страница 3: ...for Flushing Connection Ring 6 3 6 6 Setting the Range Using the Range setting Switch 6 4 7 MAINTENANCE 7 1 7 1 Overview 7 1 7 2 Calibration Instruments Selection 7 1 7 3 Calibration 7 1 7 4 Disassemb...

Страница 4: ...JX118A diaphragm sealed differential pressure transmitter Users of the EJX438A should bear in mind that certain features of their instrument will differ from those shown in the illustrations of the EJ...

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Страница 6: ...is instru ment the customer should contact the Yokogawa representative from which this instrument was purchased or the nearest Yokogawa office If a problem arises with this instrument please inform us...

Страница 7: ...productos antiexplosivos de ATEX est n disponibles en ingl s alem n y franc s Si desea solicitar las instrucciones de estos art culos antiexplosivos en su idioma local deber ponerse en contacto con la...

Страница 8: ...tory before shipment When taking delivery of an instrument visually check them to make sure that no damage occurred during shipment Also check that all transmitter mounting hardware shown in figure 2...

Страница 9: ...ransmitter under pressure a Make sure that there are no leaks in the impulse piping b Never apply a pressure higher than the specified maximum working pressure 2 6 Waterproofing of Cable Conduit Conne...

Страница 10: ...f instrument and the instrument is not restored to its original condition its intrinsically safe or explosionproof construction may be compromised and the instrument may be hazardous to operate Please...

Страница 11: ...SAFETY and INSTALL IN ACCORDANCE WITH DOC No IFM022 A12 Note 4 Maintenance and Repair The instrument modification or parts replacement by other than authorized representative of Yokogawa Electric Corp...

Страница 12: ...No 213 C22 2 No 1010 1 Intrinsically Safe for Class I Division 1 Groups A B C D Class II Division 1 Groups E F G Class III Division 1 Nonincendive for Class I Division 2 Groups A B C D Class II Divis...

Страница 13: ...IM 01C25H01 01E 2 6 2 HANDLING CAUTIONS F0204 1 EPS Class I II III Division 1 Groups A B C D E F G EJX Series Pressure Transmitters Safety Barrier Supply...

Страница 14: ...0 EN 50284 EN 50281 1 1 Type of Protection and Marking code EEx ia IIC T4 Group II Category 1G 1D Ambient Temperature for gas proof 50 to 60 C Process Temperature Tp 120 C max Maximum Surface Temperat...

Страница 15: ...EX KEMA Intrinsically Safe Flameproof or CENELEC ATEX Type n for use in hazardous locations Note 1 For the installation of this transmitter once a particular type of protection is selected any other t...

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Страница 17: ...ble Voc Vmax Isc Imax Ca Ci Ccable La Li Lcable Uo Io Po Co Lo Voc Isc Ca and La are parameters of barrier Note 3 Installation In any safety barreir used output current must be limited by a resistor R...

Страница 18: ...uid should be maintained at levels that are consistent with normal operating conditions The ambient temperature should be maintained at a level that is consistent with normal operating conditions Plea...

Страница 19: ...ansmitter section See below for details Pressure detector section Cover flange Diaphragm seal high pressure side Diaphragm seal low pressure side Capillary tube Drain vent plug Flushing connection rin...

Страница 20: ...e label on each diaphragm seal is marked HIGH or LOW Figure 4 1 Mounting the Diaphragm Seals IMPORTANT Please use a gasket with an inside diameter d that is greater than the diameter of the dia phragm...

Страница 21: ...IM 01C25H01 01E 4 2 4 INSTALLATION...

Страница 22: ...ection and the transmitter mm h 0 Install the transmitter at least h mm below the HP process connection h 0 Install the transmitter at most h mm above the HP process connection P Pressure in the tank...

Страница 23: ...ection Ring 4 4 1 Mounting to Pressure Detector Section The flushing connection ring is mounted to the pressure detector section as shown in Figure 4 6 At the factory shipment the flushing connection...

Страница 24: ...asket area covering it completely and evenly Be careful not to scratch the dia phragm or change the its shape 3 Affix the teflon film over the diaphragm and gasket area 4 Next carefully inspect the co...

Страница 25: ...wrench it goes in The cover lock can then be released and the cover can be opened by hand See subsection 7 4 Disassembly and Reassembly for details Plug and seal an unused conduit connection 5 2 Sele...

Страница 26: ...Meter Connection Available only when AL is not specified Connect the check meter to the CHECK and terminals Use hooks A 4 to 20 mA DC output signal from the CHECK and terminals Note Use a check meter...

Страница 27: ...cable through flameproof packing adapter Apply a non hardening sealant to the terminal box connection port and to the threads on the flameproof packing adapter for waterproofing Flameproof packing ada...

Страница 28: ...ch diaphragm seal mounting flange b Turn ON power and connect the communicator Open the terminal box cover and connect the communicator to the SUPPLY and terminals c Using the communicator confirm tha...

Страница 29: ...ERATION Using the integral indicator If the wiring system is faulty the display stays blank If the transmitter is faulty an error code is displayed Self diagnostic error on the integral indicator Faul...

Страница 30: ...d set the optimum damping time constant 2 After confirming the operating status perform the following IMPORTANT Remove the communicator from the terminal box and confirm that none of the terminal scre...

Страница 31: ...oing so completes the LRV setting 6 Press the range setting push button The integral indicator then displays URV SET 7 Apply a pressure of 50 kPa to the transmitter Note 1 8 Turn the external zero adj...

Страница 32: ...them while performing maintenance IMPORTANT As a rule maintenance of this transmitter should be done in a shop that has all the necessary tools The CPU assembly contains sensitive parts that can be da...

Страница 33: ...pneumatic pressure standard for 200 kPa 2 kgf cm2 25 kPa 2500 mmH2O Accuracy 0 05 of F S Requires air pressure supply Pressure source Model 6919 pressure regulator pressure pump Pressure range 0 to 13...

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Страница 35: ...ith brown connector at the end When doing this lightly press the side of the CPU assembly connec tor and pull the cable connector to disengage 4 Use a socket driver width across flats 5 5mm to loosen...

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Страница 39: ...Zero can be fully elevated or suppressed within the lower and upper range limits of the capsule External Zero Adjustment External Zero is continuously adjustaTf with 0 01 incremental resolution of sp...

Страница 40: ...o 100 RH Working Pressure Limits See table 8 1 For atmospheric pressure or below see figure 8 1 and 8 2 2 7 0 38 100 14 5 0 1 0 014 1 0 14 10 1 4 50 0 50 100 150 200 250 300 350 F0801 EPS Process temp...

Страница 41: ...e L length in meters or feet R resistance in including barrier resistance C cable capacitance in pF m or pF ft Cf maximum shunt capacitance of receiving devices in pF m or pF ft EMC Conformity Standar...

Страница 42: ...kg 47 9 lbs 4 inch ANSI Class150 flange extention length X2 100 mm capillary length 5 m without integral indicator and mounting bracket Combination type 18 9 kg 41 7 lbs 4 inch and 3 inch ANSI Class1...

Страница 43: ...ection I and a diaphragm seal section II This specification sheet introduces these two parts separately The transmitter body section is shown in one table and the diaphragm seal section specifications...

Страница 44: ...IM 01C25H01 01E 8 6 8 GENERAL SPECIFICATIONS EJX438A I Transmitter body section F0806 EPS EJX438A...

Страница 45: ...rocess connection size Process flange size Flange material Gasket contact surface 1 Wetted parts material Flushing connection ring 2 Extension Fill fluid Capillary connection Capillary length 6 Suffix...

Страница 46: ...IM 01C25H01 01E 8 8 8 GENERAL SPECIFICATIONS II Diaphragm seal section Flush type Process connection size 1 1 2 inch 40 mm F0808 EPS EJX118A EJX438A W 8...

Страница 47: ...IM 01C25H01 01E 8 9 8 GENERAL SPECIFICATIONS II Diaphragm seal section Extended type Process connection size 4 inch 100 mm 3 inch 80 mm F0809 EPS EJX118A EJX438A E 4 3...

Страница 48: ...01E 8 10 8 GENERAL SPECIFICATIONS II Diaphragm seal section Combination type Process connection size Low pressure side 4 inch 100 mm Extended type High pressue side 3 inch 80 mm Flush type F0810 EPS...

Страница 49: ...1 Groups A B C and D Class II Division 1 Groups E F and G and Class III Division 1 Hazardous Locations Nonincendive for Class I Division 2 Groups A B C and D Class II Division 2 Groups F and G and Cla...

Страница 50: ...R Adjusting range 80 C to Maximum temperature of specified fill fluid Operating temperature correction 5 V When ambient temperature exceeds 100 C or use of PVC is prohibited Capillary without PVC she...

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Страница 52: ...IM 01C25H01 01E 8 14 8 GENERAL SPECIFICATIONS 8 4 DIMENSIONS Transmitter body section EJX118A F0811 EPS...

Страница 53: ...and the flange thickness t 1 When wetted parts material code UW titanium value is 34 1 34 2 Indicates inside diameter of gasket contact surface 3 In case where process flange material is JIS S25C valu...

Страница 54: ...M 01C25H01 01E 8 16 8 GENERAL SPECIFICATIONS Process flange size 4 inch 100 mm Process flange size 3 inch 80 mm Process flange size 2 inch 50 mm Process flange size 1 1 2 inch 40 mm Unit mm Approx inc...

Страница 55: ...ontact output terminal 2 when AL is specified Ground terminal Communication terminals BT200 etc connection hook Terminal Wiring 1 When using an external indicator or check meter the internal resistanc...

Страница 56: ...approval8 3rd July 2006 2 3 2 9 Add note for Fieldbus communication8 2 3 through 2 9 Add change applicable standards8 2 6 2 9 2 Add descriptions for Note 28 2 9 Add 2 9 4 IECEx Certification 2 10 2 1...

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