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Seojin Instech SDT-420 Installation Manual

Displacement type level transmitter
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Displacement Type Level Transmitter
(Gunja- - - - Dong) No.288 Dongil
(Gunja
(Gunja
(Gunja
Dong) No.288 Dongil- - - - Ro Gwangjin
Dong) No.288 Dongil
Dong) No.288 Dongil
Tel: 02-2204-8500
http:// www.seojin.biz
Ro Gwangjin- - - - Ku
Ro Gwangjin
Ro Gwangjin
Ku
Ku
Ku
Fax: 02-2204-8505
Mar. 2012
DT-10120050801-SBL
Rev. 2.0

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  • Page 1 Displacement Type Level Transmitter Mar. 2012 (Gunja (Gunja- - - - Dong) No.288 Dongil (Gunja (Gunja Dong) No.288 Dongil Dong) No.288 Dongil Dong) No.288 Dongil- - - - Ro Gwangjin Ro Gwangjin Ro Gwangjin Ro Gwangjin- - - - Ku Tel: 02-2204-8500 Fax: 02-2204-8505 http:// www.seojin.biz...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS TABLE OF CONTENTS TABLE OF CONTENTS TABLE OF CONTENTS Chapter Contents Page Before installing Introduction Features Principles of operation Specifications Name Plate Installation Displacer Wiring Configuration Troubleshooting Remote Configuration HHT 375...

  • Page 3: Before Installing

    Before I I I I nstalling nstalling nstalling nstalling · Read this manual thoroughly and become familiar with it before installing or operating this Displacement type Level Transmitter (SDT-420). 1.1 Safety Precaution 1.1 Safety Precautions s s s 1.1 Safety Precaution 1.1 Safety Precaution ·...
  • Page 4 8. Do not install or use the instrument in the location where generates noticeable inductive interference, electrostatics or magnetic noise. 9. Keep the instrument away from the direct sunlight or radiation heat. 10. Do not use the instrument in a location of which the altitude is more than 2000 meters. 11.

  • Page 5: Introduction

    2. 2. 2. 2. Introduction Introduction Introduction Introduction · For the safe and efficient operation of various high temperature and high pressure steam drums, boilers and reactors used in Firepower Plants, Glass & Cement Plants, Petrochemical Plants and Steel & Paper manufacturing Plants, close monitoring and controlling of the interface level between water and vapor is very important.
  • Page 6 4. Principles of 4. Principles of O O O O peration 4. Principles of 4. Principles of peration peration peration 4.1 Overvie Overvie Overview (Explosion Proof Type) Overvie w (Explosion Proof Type) w (Explosion Proof Type) w (Explosion Proof Type) 4.2 Torsion Bar Torsion Bar A A A A ssembly ssembly...
  • Page 7 4. 4. 4. 4.3 3 3 3 Overview (Intrinsically Safety Type) Overview (Intrinsically Safety Type) Overview (Intrinsically Safety Type) Overview (Intrinsically Safety Type)
  • Page 8 4. 4. 4. 4.4 4 4 4 Displayer Assembly Displayer Assembly Displayer Assembly Displayer Assembly ITEM NAME ITEM NAME DISPLAY HOUSING TERMINAL BLOCK COVER COVER PCB THRU CAPACITOR MASK BASE PCB SUPPORT RETAINING RING DISPLAY BRACKET GLASS WINDOW CYLINDER HEAD SCREW M3 STOP RING CONNECTOR O RING...

  • Page 9: Principles Of Operation

    4.5 Principles of Operation 4.5 Principles of Operation 4.5 Principles of Operation 4.5 Principles of Operation · The Displacer(Fig3. – ITEM 33)'s buoyancy is transmitted to the Torsion Bar(Fig.2 - ITEM 9) through the Operating Rod Assembly(Fig2. – ITEM 8) then converted to electrical signals by the compressive force or tensile force of the Load Cell connected to the bar fixture.

  • Page 10: Specifications

    5. Specif 5. Specifications 5. Specif 5. Specif ications ications ications 5.1 Model & Range 5.1 Model & Range 5.1 Model & Range 5.1 Model & Range SDT- 420 / 300 ~ 3,000 5.2 Electric Specifications 5.2 Electric Specifications 5.2 Electric Specifications 5.2 Electric Specifications Power Supply ·...
  • Page 11 Intrinsic Safe e e e ty ty ty ty ‘ ‘ ‘ ‘ i i i i ’ ’ ’ ’ ) ) ) ) Intrinsic Saf All units have a rating label, which carries the following important information: DISPLACEMENT TYPE LEVEL TRANSMITTER Model : SDT-420 Code : Ex ia IIC T4 IP65 Ta +60 Type Approval Standards...

  • Page 12: Name Plate

    6. N 6. Name 6. N 6. N ame P P P Plate late late late · 2 Name Plates are attached on this transmitter; one is attached on (The Adjusting Housing), which includes the information about process conditions such as pressure, temperature, C to C, flange rating and the size of displacer.

  • Page 13: Installation

    7. Installation 7. Installation 7. Installation 7. Installation · This transmitter is normally installed directly on top of a vessel or on the side of a vessel using a displacer chamber. · Before installing, check if the tolerable pressure and the surrounding temperature are appropriate. 7.1 When When When A A A A pplying to a...
  • Page 14 7.4 Precautions for 7.4 Precautions for t t t t he 7.4 Precautions for 7.4 Precautions for he I I I I nstallation on nstallation on nstallation on nstallation on t t t t he he S S S S ide of a ide of a ide of a V V V V es ide of a...
  • Page 15 7.5.2 7.5.2 7.5.2 7.5.2 Installation Installation Installation Installation Step 1: : : : To Step 1 To A A A A ssembl ssemble e e e the the S S S S ensor ensor B B B B ody on to ody on to Step 1 Step 1...
  • Page 16 Step Step 4 4 4 4 : : : : To Step Step To F F F F ix ix ix ix the the S S S S tud tud B B B B olt & olt & olt & olt &...

  • Page 17: Displacer

    8. 8. 8. 8. Displacer Displacer Displacer Displacer · Verify if the specification of the displayer is relevant to the displacer. The displayer is calibrated at the factory according to the requested specification before the shipment. Every displacer includes the tag number or the length on it. 8.1 Applying Pressure Applying Pressure Applying Pressure...

  • Page 18: Wiring

    9 9 9 9 . Wiring . Wiring . Wiring . Wiring 9.1 To To C C C C onnect onnect onnect onnect the the S S S S ignal ignal ignal ignal L L L L ine ine (Stan (Stan (Stan (Standard Type)
  • Page 19 9.2 Grounding Grounding Grounding Grounding · The instrument should be connected to a ground terminal when there is any concern of influence by electromagnetic waves or noises, or electromagnetic fields. · Even if a non-conductivity gasket is used, the ground connection must be done between the connection flange and the torsion bar guard.
  • Page 20 9 9 9 9 .3 W .3 W .3 Wiring .3 W iring iring D D D Diagram iring iagram iagram iagram Note Notes s s s Note Note · The cable impedance is defined to the maximum length possible to do the digital communication, however using...
  • Page 21 9 9 9 9 .3.1 .3.1 .3.1 .3.1 To To C C C C onnect SDT onnect SDT onnect SDT- - - - 420 onnect SDT 420 D D D D irectly irectly irectly irectly to P to P to Power to P ower ower S S S Supp...

  • Page 22: Configuration

    This is an installation guide for the Point to Point configuration. To install and operate SDT-420 properly, the calibration should be performed with appropriate variables according to the installed environment. Some of these variables should be checked and inputted by a user at the field, whereas some of them would be inputted at the factory before shipment.
  • Page 23 10.1 Configuration Terms 10.1 Configuration Terms 10.1 Configuration Terms 10.1 Configuration Terms HART : H H H H ighway A A A A ddressable R R R R emote T T T T ransducer : Primary measure variable with the 4/20mA output PV(P P P P rimary V V V V ariable) The level value that is being measured USL(U U U U pper S S S S ensor L L L L imit) : Maximum measurable value of sensor...
  • Page 24 10.2 2 2 2 Configuration Value Configuration Value Configuration Value Output Configuration Value Output Output Output 10.2.1 Principle of 10.2.1 Principle of Configuration Value Configuration Value Output Output 10.2.1 Principle of 10.2.1 Principle of Configuration Value Configuration Value Output Output 10.2.2 10.2.2 10.2.2...
  • Page 25 10.4 4 4 4 M M M Menu enu M M M Map The numeric information on the upper part of the boxes below shows the current menu which is displayed on the Menu section and the current mode or menu can be switched by pushing the button shown left or below the box.
  • Page 26 10.5 5 5 5 M M M Menu enu Configuration Configuration Configuration Configuration 10.5 5 5 5 .1 Present Variable Display Mode ( PV ) .1 Present Variable Display Mode ( PV ) .1 Present Variable Display Mode ( PV ) .1 Present Variable Display Mode ( PV ) * PV that is being measured currently can be displayed in various units.
  • Page 27 10.5 5 5 5 .3 URV Calibration Mode ( 100% Hundred Percentage ) .3 URV Calibration Mode ( 100% Hundred Percentage ) .3 URV Calibration Mode ( 100% Hundred Percentage ) .3 URV Calibration Mode ( 100% Hundred Percentage ) - - - - Menu Menu 02 02 : URV Auto Calibration Mode...
  • Page 28 10.5 5 5 5 .5 .5 .5 .5 L L L Length ength Calibration Mode Calibration Mode ength ength Calibration Mode Calibration Mode - - - - Menu Menu 04 : L 04 : Length ength Calibration Mode Calibration Mode Menu Menu 04 : L...
  • Page 29 10.5 5 5 5 .7 Analog Output Setting Mode .7 Analog Output Setting Mode .7 Analog Output Setting Mode .7 Analog Output Setting Mode - - - - Menu Menu 06 06 : Analog Output Setting Mode : Analog Output Setting Mode Menu Menu : Analog Output Setting Mode...
  • Page 30 10.5 5 5 5 .9 .9 .9 .9 Density Density Density of of of of the Density the Lower Fluid Lower Fluid Lower Fluid Setting Mode Lower Fluid Setting Mode Setting Mode Setting Mode - - - - Menu Menu 08 08 : : : : Density Density of of of of the the Lower Fluid...
  • Page 31 10.5 5 5 5 .11 .11 2 2 2 2 0mA Trim Mode 0mA Trim Mode 0mA Trim Mode 0mA Trim Mode - - - - Menu Menu Menu 10 Menu 10 : 20 : 20 : 20 : 20 Trim Ready Mode Trim Ready Mode Trim Ready Mode...
  • Page 32 10.5 5 5 5 .13 0% User Unit Value Setti .13 0% User Unit Value Setti .13 0% User Unit Value Setting Mode .13 0% User Unit Value Setti ng Mode ng Mode ng Mode - - - - Menu Menu 12 : 0% User Unit Value Setting Mode 12 : 0% User Unit Value Setting Mode Menu...
  • Page 33 10.6 6 6 6 Water Calibration Procedures Water Calibration Procedures Water Calibration Procedures Water Calibration Procedures · The default unit for all factors in this program is millimeter so the figures displayed on the LCD are the converted ones from the figures in millimeter. - - - - Pre Pre- - - - checking checking...
  • Page 34 10.7 7 7 7 I I I I nterface nterface nterface M M M M easurement Calibration Procedures nterface easurement Calibration Procedures easurement Calibration Procedures easurement Calibration Procedures · The default unit for all factors in this program is millimeter so the figures displayed on the LCD are the converted ones from the figures in millimeter.

  • Page 35: Troubleshooting

    11. T 11. Troubleshooting 11. T 11. T roubleshooting roubleshooting roubleshooting Symptom Check Point Check the polarity if it is in the right direction. The signal output indicates Check the Power line. Zero Check the Power voltage. Check the Load resistance. Check the Power line.

  • Page 36: Remote Configuration Hht 375

    12. Remote Configuration Type HHT 375 12. Remote Configuration Type HHT 375 12. Remote Configuration Type HHT 375 12. Remote Configuration Type HHT 375 12.1. General 12.1. General 12.1. General 12.1. General HHT(375) is the terminal which supports remote communication interface of the transmitter. 12.2.

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