Manuals - OMEGA Engineering
Contents
1. LINK FOR w x 00 T A B A B 1 00 00 200 00 3 mi oo WI e Maths E OO E yya ID Terminals 5 11 and 15 are internally connected but for best performance they should be treated as separate terminals Note If the output polarity is incorrect reverse the transducer secondary connections 2 0 Installation cont 2 3 Description of links The table below and subsequent diagrams explain the link functions and detail the factory settings tink Description opos aaa CS AB A B A B 72 AB Note If the output polarity is incorrect reverse the transducer secondary connections O m ia a a Link ON Link PARKED Link OFF 2 0 Installation cont 2 0 Installation cont 2 4 Primary Freguency The LDX D primary frequency is set using links as shown bel2. LDK D Shop online at omega com CEOMEGA omega com e mail info omega com For latest product manuals omegamanual info CORPORATE QUALITY CORPORATE QUALITY USA ISO 9001 Certified Canada www omega com Servicing North America One Omega Drive Box 4047 Stamford CT 60907 0047 Tel 203 359 1660 FAX 203 359 7700 e mail info omega com 976 Bergar Laval Quebec H7L 5A1 Canada Tel 514 856 6928 FAX 514 856 6886 For immediate technical or application assistance USA and Canada Mexico Sales Service 1 800 826 6342 1 800 TC OMEGA Customer Service 1 800 872 2378 1 800 622 BEST Engineering Service 1 800 872 9436 1 800 USA WHEN TELEX 996404 EASYLINK 62968934 CABLE OMEGA En Espanol 001 203 359 7803e mail espanol omega co FAX 001 203 359 7807 info omega com mx omega com CEOMEGA OMEGAnet On Line Service Internet e mail info omega com Benelux Czech Republic France Germany Austria United Kingdom ISO 9002 Certified Servicing Europe Postbus 8034 1180 LA Amstelveen The Netherlands Tel 31 0 20 3472121 FAX 31 0 20 6434643 Toll Free in Benelux 0800 0993344 e mail sales omegaeng nl Frystatska 184 733 01 Karvina Czech Republic Tel 420 0 59 6311899 FAX 420 0 59 6311114 Toll Free 0800 1 66342 e mail info omegashop cz 11 rue Jacques Cartier 78280 Guyancourt France Tel 33 0 1 61 372900 FAX 33
3. 0 1 30 57 5427 Toll Free in France 0800 466 342 e mail sales omega fr Daimlerstrasse 26 D 75392 Deckenpfronn Germany Tel 49 0 7056 9398 0 FAX 49 0 7056 9398 29T oll Free in Germany 0800 639 7678 e mail info omega de One Omega Drive River Bend Technology Centre Northbank Irlam Manchester M44 5BD United Kingdom Tel 44 0 161 777 6611 FAX 44 0 161 777 6622 Toll Free in United Kingdom 0800 488 488 e mail sales omega co uk It is the policy of OMEGA to comply with all worldwide safety and EMC EMI regulations that apply OMEGAis constantly pursuing certification of its products to the European New Approach Direc tives OMEGA will add the CE mark to every appropriate device upon certification The information contained in this document is believed to be correct but OMEGA Engineering Inc accepts no liability for any errors it contains and reserves the right to alter specifications without notice WARNING These products are not designed for use in and should not be used for human applications M 4346 1113 Index 1 0 Safety Information 2 4 0 MATH Functions 18 1 1 Electrostatic discharge 3 4 1 MATH Introduction 18 4 2 MATH Set up Procedure 19 2 0 Installation 4 2 1 Mounting and Access 4 5 0 Transducer Sensitivity 20 2 2 Connections and Link Identification 5 5 1 X1 X2 X5 and DIV2 Link 20 2 3 Description of Links 6 2 4 Primary Frequency 7 6 0 Application 21 2 5 Transducer Input Load 7 6 1 Application
4. PURCHASER MUST OBTAIN AN AUTHORIZED RETURN AR NUMBER FROM OMEGA S CUSTOMER SERVICE DEPARTMENT IN ORDER TO AVOID PROCESSING DELAYS The assigned AR numbershould then be marked on the outside of the return package and on any correspondence The purchaser is responsible for shipping charges freight insurance and proper packaging to prevent breakage in transit FOR WARRANTY RETURNS please have the following information available BEFORE contacting OMEGA 1 Purchase Order number under which the product was PURCHASED 2 Model and serial number of the product under warranty and 3 Repair instructions and or specific prob lems relative to the product FOR NON WARRANTY REPAIRS consult OMEGA for current repair charges Have the follow ing information available BEFORE contacting OMEGA 1 Purchase Order number to cover the COST of the repair 2 Model and serial number of the product and 3 Repair instructions and or specific prob lems relative to the product OMEGA s policy is to make running changes not model changes whenever an improvement is possible This affords our customers the latest in technology and engineering OMEGA is a registered trademark of OMEGA ENGINEERING INC Copyright 2004 OMEGA ENGINEERING INC All rights reserved This document may not be copied photocopied reproduced translated or reduced to any electronic medium or machine readable form in whole or in part without the prior wr
5. 20 mA Step 5 Final checks Ensure that calibration is correct by moving the transducer across the required mechanical range including the mid position and checking the calibration points Fine adjustments can be made if required It may only be possible to set the output accurately at the two calibration points This is due to non linearity within the transducer 3 0 Setting Up cont 4 4 0 MATH Functions 4 1 MATH Introduction By linking two LDX D modules the following analog arithmetic may be performed A B A B A B 2 and A B 2 The output of LDX D A Vout is connected to the Min terminal of LDX D B The output of LDX D B is routed internally to the arithmetic circuits and the result is available at the Mout terminal The inverse of Mout is available as Mout Vout Mout and Mout may be used at the same time however they are not individually adjustable Transducer B Output Transducer A No MATH link setting reguired Vout o transducer A position LDX D B Math links set as A B example 6 Vout cc transducer B Power Supply position Supply 5 Mout Vout Mout 1 Mout 1 Vout Mout 1 Mout 4 0 MATH Functions 6 4 0 MATH Functions cont 4 2 MATH Set up Procedure T 2 60 66 2 3 NH oo 1 3 LINK FOR o ola 4 00 mm xy2 ATBT72 Setting up two LDX D for MATH can become confusing as the output of each LDX D will affect the final output T
6. 9 q Made in England VGs NEm 7 eet OMT y gt T i Z 7 2 DIN Rail Cover release latch Withdraw PCB To access internal links the front cover and PCB must be withdrawn from the housing Use a screwdriver or similar tool to depress the top latch The cover will spring forward Repeat with the bottom latch then gently pull the PCB out 2 0 Installation o 2 0 Installation cont 2 2 Connections and link identification Transducer 1 Synchronization 1 2 Synchronization 2 3 Primary red 4 Primary blue 1 4 sy1 _sy2 prit_jpri2 8 scr CT jsect sec2 Power Fine Adjust Gain Offset 0 Vout Mout OV Tout 9 output 12 Min Mout T 13 power 16 13 14 15 16 2 0 Installation cont Screen 0 V CT yellow Secondary green Secondary white Power Supply amp Outputs Voltage Output Math OUT Signal 0 V Current OUT Math External IN Inverted Math OUT VE power supply VE power supply e Primary Frequency e Synchronization e Coarse Offset SS e Input Load e Input Gain e Coarse Gain s Bandwidth e Null at set up PRIMARY Pr 5 1013 oo 2 ma 00 00 O O 3 00 mm 4 m o0 M T
7. Example 21 2 6 Bandwidth 7 2 7 Basic Configuration 8 7 0 Specification 22 2 8 Output Descriptions 9 7 1 Mechanical Outline 22 2 9 Connections 10 7 2 Technical Specification 23 2 10 Placement and EMC 11 2 11 LDX D Synchronization 14 Return of Goods 3 0 Setting Up 15 3 1 Set up Summary 15 3 2 Set up Procedure 16 Index 4 1 0 Safety Information Terms in this Manual Warnings amp Cautions WARNING statements identify conditions or WARNING Do not operate in an explosive atmosphere practices that could result in personal injury or loss of life WARNING Safety critical environments This equipment is not intended for use in a safety critical CAUTION statements identify conditions or practices environment that could result in damage to the equipment or other property CAUTION Low voltage This equipment operates at below the SELV and is Symbols in this manual therefore outside the scope of the Low Voltage Directive This symbol indicates where applicable cautionary or other information is to be found This equipment is designed to work from a low voltage DC supply Do not operate this equipment outside of specification 1 0 Safety Information G 1 0 Safety Information cont Warnings amp Cautions 1 1 CAUTION Electrostatic Discharge This equipment is susceptible to electrostatic discharge ESD when being installed or adjusted or whenever the case cover is removed To prevent ESD related damage handle the conditioning
8. Procedure Step 1 Set up LDX D links If the transducer characteristics are known set the frequency and input resistance links as required If the transducer is known to be outside the standard sensitivity range the X1 X2 X5 or DIV2 links will have to be used Please refer to section 5 1 Step 2 Align LDX D and transducer null Any electrical offset in the LDX D is removed The transducer position is adjusted so that transducer and LDX D nulls are aligned Null the LDX D 1 Put the gain link onto the null position This puts a temporary short across the transducer KK T input and allows any electronics offset to be removed 2 Adjust the fine offset control to give as near zero output as practical 0000000 Null the transducer 090000000 3 Replace the gain link to the original position aw 36 5 432 1 4 Adjust the position of the transducer to give as near zero output as practical This is the L2 COARSE GAIN center of the mechanical range If the transducer cannot be centered for practical reasons an offset will remain within the system There may be noticeable interaction between gain and offset adjustment This does not prevent the LDX D being set up although several iterations may be required when adjusting gain and offset Please consult your supplier for guidance if required 3 0 Setting Up cont 3 0 Setting Up cont Step 3 Setting bi polar full scale output 1 Move the transducer to the position
9. electronics by its case and do not touch the connector pins During installation please observe the following guidelines AA Ensure all power supplies are turned off e If possible wear an ESD strap connected to ground If this is not possible discharge yourself by touching a metal part of the equipment into which the conditioning electronics is being installed Connect the transducer and power supplies with the power switched off Ensure any tools used are discharged by contacting them against a metal part of the equipment into which the conditioning electronics is being installed During setting up of the conditioning electronics make link configuration changes with the power supply turned off Avoid touching any other components Make the final gain and offset potentiometer adjustments with power applied using an appropriate potentiometer adjustment tool or a small insulated screwdriver 1 0 Safety Information cont 6 2 0 Installation 2 1 Mounting and Access Before mounting the LDX D please refer to section 2 10 Hook the LDX D on the DIN rail with the release clip facing down and push onto the rail until a click is heard To remove use a screwdriver to lever the release clip down Pull the bottom of the housing away from the rail and unhook 5 zi Ai MALY omega com MEOMEGA E LDX D NN
10. the X1 X2 X5 or DIV2 input gain link must be used Calculating transducer Full Range Output FRO In general transducer sensitivity is quoted as mV V mm where mV output of the transducer V primary voltage mm mechanical position of the transducer from null usually mid mechanical range To calculate the transducer full range output simply multiply all three together Example GP911 1 sensitivity is 210 mV V mm LDX D primary voltage is 3 V GP911 1 range is 1 mm Transducer full range output is 210 x 3 x 1 630 mV 0 63 V It falls within the standard range Set the X2 X5 DIV2 link as shown in the table below Transducer Full Range Output Input Gain Link setting 400 mV FRO to 2500 mV FRO Standard range Link ON X1 150 mV FRO to 400 mV FRO Link ON X2 150 mV FRO to 400 mV FRO Very low output transducer Link ON X5 2500 mV FRO to 5000 mV FRO High output transducer DIV2 Links X1 X2 X5 parked ie all OFF 5 0 Transducer Sensitivity 6 0 Application 6 1 Application ekample wa 1 g 4 a E 23 58 Actual installation may differ 27 sij 2 it pre AA depending on requirements 83 Sn CT set 5662 IAA M LDX D B set to A B This is one practical example aa Power Power NI Fine Adjust I Fine Adjust Gain S Gain S O ome oe DVM probe A probe B In 1
11. 20 230vac Mion ia i YT Ma a A chassis Ground 23420 Vi See L nec we NV 48 ene 16 ha power E DOO 0 Mains in LL TE LDX D A linked to LDX D B LDX DA LDX DB 6 0 Application 7 0 Specification 7 1 Mechanical Outline mm 111 0 220 bes o omega com CEOMEGA E 99 LDX D Made in England P O Box 4047 Stamford CT USA 06907 0047 www omegamanual info Wa 114 5 wo 7 0 Specification 6 a 7 0 Specification cont 7 2 Technical Specification Power Reguirement Voltage Range 10 to 30 VDC Transducer Excitation Primary Voltage 3 V rms nominal Primary Frequency Link Selectable 5 kHz 10 kHz or 13 kHz Signal Input Transducer Sensitivity Range 400 to 2500 mV FRO in 6 gain ranges 150 to 400 mV FRO 55 to 150 mV FRO Signal Output Coarse link selectable 10 VDC 220 mA Up to 100 5 VDC 10 mA tput Offset i ME coarse amp fine adjustment Fine front panel adjust 2 5 VDC 25 6 mA 7 0 Specification cont B 7 0 Specification cont Signal Output cont lt 0 01 FRO C lt 0 01 FRO C 15 minutes recommended lt 0 1 FRO Bandwidth C3 dB ABA B 8V2 A BVZ Environmental Certification Immunity BS EN61000 6 2 2001 Immunity for Industrial Environments Emissions BS EN
12. 61000 6 3 2001 Emission for Residential Commercial and Light Industrial Environments Mechanical and Connections serra Output Sana Enclosure size 114 5 x 99 x 22 5 mm Weight 120 g i Green polyamide 7 0 Specification cont 7 0 Specification cont Notes 1 Omega Transducers are calibrated using the following loads au Standardised plugged Non standardised unplugged oT Wa Wa Fame When a standard LVDT transducer is connected to LDX D set for 100 kQ transducer characteristics will be similar to the non standardised unplugged version of that transducer When a non standardised unplugged Half Bridge transducer is connected to LDX D set for 2 kQ transducer characteristics will be similar to the standardised plugged version of that transducer Any difference in transducer sensitivity is removed during LDX D set up Where load resistance is critical an external resistor may be fitted If a 10 kQ load is required an additional 11 kQ resistor may be used in conjunction with the 100 kQ internal load This may be connected across the SEC1 7 and SEC2 8 terminals If a 1 KQ load is required an additional 1 KQ resistor may be used No input options are offered As connection of transducer is by screw terminal additional internal configuration methods are not required By changing connections and use of external components the user can perform e Change input polarity e Half Bridge connection e Groun
13. alf Bridge Electrical Connections Red and blue nergising VDT Electrical Connections Red and blue rimary energising inal Secondary signal ransducer body ground Secondary center tap ransducer body ground The CT terminal is provided to terminate the center tap CT connection of a transducer if present There is no electrical con nection within the LDX D This is provided to allow for quadrature components to be fitted if required 2 0 Installation cont 2 0 Installation cont 2 10 Placement and EMC LDX D has been designed to comply with EMC regulations For best performance the EMC compliance of surrounding equipment must be considered High levels of EMI electro magnetic interference can affect the performance of LDX D Residential Commercial and Light Industrial Environments Typically this will be an office laboratory or industrial environment where there is no equipment likely to produce high levels of electrical interference such as welders or machine tools Connections may be made using twisted unscreened wire which is a cost effective option giving good performance in this environment Standard equipment wire such as 7 0 2 24AWG can be twisted together as required Standard data cable such as a generic CAT5 UTP will also give good performance Industrial Environments Typically this will be an industrial environment where there is equipment likely to produce high levels of electrical interference suc
14. d free of defects OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER EXPRESS OR IMPLIED EXCEPT THAT OF TITLE AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HERE BY DISCLAIMED LIMITATION OF LIABILITY The remedies of purchaser setforth herein are exclusive and the total liability of OMEGA with respect to this order whether based on contract warranty negligence indemnification strict liability or otherwise shall not exceed the purchase price of the component upon which liability is based In no event shall OMEGA be liable for consequential incidental or specialdamages CONDITIONS Equipment sold by OMEGA is not intended to be used nor shall it be used 1 as a Basic Component under 10 CFR 21 NRC used in or with any nuclear installation or activity or 2 in medical applications or used on humans Should any Product s be used in or with any nuclear installation or activity medical application used on humans or misused in any way OMEGA assumes no responsibility as set forthin our basic WARRANTY DISCLAIMER language and additionally purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product s in such a manner RETURN REQUESTS INQUIRIES Direct all warranty and repair requests inquiries to the OMEGA Customer Service Department BEFORE RETURNING ANY PRODUCT S TO OMEGA
15. ding one side of the input e Phase correction e Quad resistors 3 LDX D can drive into a 1 KQ load but this offers no advantage 10 100 kQ is recommended 7 0 Specification cont B 7 0 Specification cont 4 Output range can be adjusted as required anywhere within this range by using a combination of gain and offset for example 10 VDC 5 VDC 0 5 VDC 0 10 VDC 4 20 mA 5 Maths requires the use of a second LDX D An additional output offset may be seen at any of the MATH outputs This is not specified as it is trimmed out during set up The LDX D is able to comply with the toughest electrical emissions and immunity regulations Compliance requires proper installation according to the user manual Compliance does not guarantee performance as the installation environment may be outside of test specification limits The flexibility of LDX D means it can be installed in a variety of ways according to user requirements Simple installations with short non screened cables will meet the lesser light industrial immunity regulations Heavy industrial installations especially with longer cables will need more careful installation with screened cables 7 0 Specification cont B WARRANTY DISCLAIMER OMEGAENGINEERING INC warrants this unit to be free of defects in materials andworkmanship for a period of 13 months from date of purchase OMEGA s Warranty adds an additional one 1 month grace period to the normal one 1 year product
16. h as welders large machine tools cutting or stamping machines LDX D should be mounted inside an industrial steel enclosure designed for EMI screening Many enclosures though metal are not designed for good screening and so careful installation is important Place LDX D away from equipment within the enclosure that is likely to produce high levels of EMI Connections should be made using a screened cable braided or foil screened cables may be used The cable screen should be connected to the housing at the cable entry point An EMC cable gland is recommended If this is not possible then the unscreened section of cable should be kept as short as possible and the screen should be connected to a local ground Where possible the LDX D should be the only ground connection point If voltage current or power supplies are ground referenced and connected at some distance from LDX D then noise may be introduced All 0 V terminals on LDX D are connected internally Ground 2 may be connected to any of the LDX D 0 V terminals however terminal 11 is preferred Screen ground ground 1 may be connected via terminal 11 Only one local ground is needed for each LDX D A local power supply is ideal but if this is not possible a screened cable arrangement can be used to reduce noise picked up 2 0 Installation cont a 2 0 Installation cont Keep exposed cable as short as possible omega com CEOMEGA LDX D P O Box 4047 Sta
17. he steps below are guidelines to help the set up process Step 1 Reguirements Write down the arithmetic reguired and the range of outputs likely to be seen This will allow the reguirement for each individual LDX D to be determined Vout of each LDX D is used Example 10 V required for A B If each LDX D is set to 10 V then A B would calculate to be 20 V However as this is not possible each LDX D must be set to 5 V or use 10 V A B 2 Example 0 10 V required for A B Set each LDX D for 0 5 V or set each LDX D to 0 10 V and use A B 2 Step 2 Initial set up Set up each LDX D as an individual module first Working around transducer null and having a V output will make set up easier Step 3 Final checks and further comments Initially each LDX D Vout may have been set to an accurate zero but an offset may still be seen at Mout This is because of offsets inherent within the MATH circuits To remove this offset adjust one of the Vout offsets Mout offset adjustment is best performed on the LDX D set for MATH 4 0 MATH Functions cont 6 5 0 Transducer Sensitivity 5 1 X1 X2 X5 and DIV2 link The LDX D compensates for changes in primary signal amplitude by producing an internal error signal that is the ratio between the primary and secondary signals If the transducer output signal is too high or too low errors may occur that can degrade the performance of the LDX D transducer combination For these transducers
18. itten consent of OMEGA ENGINEERING INC Where Do Find Everything Need for Process Measurement and Control OMEGA Of Coarse Shop online at www omega com TEMPERATURE Thermocouple RTD amp Thermistor Probes Connectors Panels amp Assemblies Wire Thermocouple RTD amp Thermistor Calibrators amp Ice Point References Recorders Controllers amp Process Monitors Infrared Pyrometers PRESSURE STRAIN AND FORCE Transducers amp Strain Gauges Load Cells amp Pressure Gauges Displacement Transducers Instrumentation amp Accessories FLOW LEVEL Rotameters Gas Mass Flowmeters amp Flow Computers Air Velocity Indicators Turbine Paddlewheel Systems Totalizers amp Batch Controllers pH CONDUCTIVITY PH Electrodes Testers amp Accessories Benchtop Laboratory Meters Controllers Calibrators Simulators amp Pumps Industrial pH amp Conductivity Equipment ee _ WATTS DATA ACQUISITION Data Acquisition amp Engineering Software Communications Based Acquisition Systems Plug in Cards for Apple IBM amp Compatibles Datalogging Systems Recorders Printers amp Plotters HEATERS Heating Cable Cartridge amp Strip Heaters Immersion amp Band Heaters Flexible Heaters Laboratory Heaters ENVIRONMENTAL MONITORING AND CONTROL Metering amp Control Instrumentation Refractometers Pumps amp Tubing Air Soil amp Water Monitors Industrial Water amp Wastewater Treatment pH Conductivity am
19. k Positions lel links not shown 3 3 g O O 2 Jo oO o z s x o 013 IE 3 Master Track 1 z Track 2 ES 4 Jo 0 4 MASTER TRACK 2 0 Installation cont Q 3 0 Setting Up 3 1 Set up Summary This is a set up summary A more detailed procedure is included in following sections but these simple steps describe a typical setting procedure and apply to most applications Other procedures may be used as appropriate Set links as required e Set LDX D output to e Move transducer to e Add offset if required e Final checks zero full scale position e Align transducer null Je Set LDX D coarse and e Set LDX D coarse and Repeat steps 2 4 fine gain fine offset to check setting Primary frequency Zero oe OV 5V Transducer load L eo S Initial gain electronics electronics T KA electronics 1 pi Bandwidth la ou ee No offset i transfiucer No MATH transducer E Null Null If in doubt about initial link position use the factory setting Performing initial set up without offset and MATH options makes set up easier Note If the output polarity is incorrect reverse the transducer secondary connections For a bi polar output i e 10 VDC or 20 mA follow steps 1 to 3 For a uni polar output i e 0 10 VDC 0 20 mA or 4 20 mA follow steps 1 to 4 In either case step 5 final checks should be followed to complete the set up 3 0 Setting Up 3 0 Setting Up cont 3 2 Set up
20. mford CT USA 06907 0047 www omegamanual info YALALA s j t Keep exposed cable as short as possible A WAH Connect screen to chassis ground ME See WMA EMC gland Ma omega com CEOMEGA LDX D P O Box 4047 Stamford CT USA 06907 0047 www omegamanual info 2 0 Installation cont 2 0 Installation cont Voltage Transducer Transducer Output Ground 1 screen Ground 2 Power converter Math Power supply 2 0 Installation cont 2 0 Installation cont 2 11 LDX D Synchronization When a system comprises several LDX D modules it is possible to synchronise primary oscillator phases Synchronization will not be required for most installations It is only required when transducers and their cables are installed in close proximity to each other and there may be electrical interaction or cross talk between probes This may be seen as a change in output from one module when the probe connected to an adjacent module is moved Even when probes are installed close to each other synchronization may not be required as cable shielding is generally effective If interactions are seen the cause is often poor 0 V or screen connection or mechanical effects between probes when mounted together PCB Idents 5 10 13 m E 00 Transducer t Transducer 1 2 EE CO 00 3 00 MI 4 EE 00 M T Lin
21. ow Transducer specifications determine the optimum frequency Primary amplitude is not adjustable The DRC uses ratiometric techniques and is insensitive to primary amplitude Maximum secondary transducer amplitudes must be observed Refer to section 5 1 2 5 Transducer Input Load gt e wo N a 5 10 13 me I OO EE OO 00 oOo EE EE OO M T The LDX D has two input load ranges 100 kQ is often used for LVDT transducers while 2 kQ is often used for Half Bridge transducers If loads of less than 100 kO are required an external resistor may be wired across the SEC1 and SEC2 terminals Most transducers perform well into 100 kQ See specification section 7 2 for further details 100 KQ link PARKED 2 KO link ON 2 0 Installation cont 1 EST ol mm SS BE ol O O 3 O O 3 O 033 O OJ4 O OJ4 O OJ4 5 kHz 10 kHz 13 kHz 2 6 Bandwidth The LDX D has selectable bandwidth BW The bandwidth setting is independent of other DRC settings Where possible the lowest bandwidth setting should be used to minimize output noise 500 Hz Link ON 1 kHz Link PARKED Note Total system bandwidth is dependent on probe type and application 2 0 Installation cont 2 7 Basic Configuration Please refer to section 2 10 before installation A floating output power supply is recommended as it will minimize ground loop noise problems Please refer to section 6 1 for a typical arrangement Transducer Power Sup
22. p Dissolved Oxygen Instruments
23. ply L 10 30 VDC converter Voltage and current connections are shown Generally only one type is used 2 0 Installation cont 2 0 Installation cont 2 8 Output Descriptions Coarse Gain Fine Gain This section describes how the various outputs of the LDK D are related Transducer Circuits This is a current output only LDX D is not loop powered This can be set for up to 20 mA A common output is 4 20 mA The lout is proportional to Vout but cannot be independently adjusted The approximate relationship is shown below When relating current to voltage 4 20 mA is the same as a 2 to 10 V span or 4 V with a 6 V offset Mout is the main MATH output This is a voltage output Vout and Min are combined in the MATH section The output of this section is inverted to keep the signal polarity the same as Vout This is an auxiliary voltage output This is the direct output of the MATH stage and is the inverse of Vout If MATH options are not selected then Mout Mout Vout Refer to section 4 1 All outputs may be used at the same time but cannot be independently adjusted for scalefactor or offset 2 0 Installation cont 2 0 Installation cont 2 9 Connections The diagram in section 2 7 shows a basic connection with LVDT The following diagram gives further details of Omega LVDT transducers and alternative connections for Half Bridge transducers Half Bridge screen 5 5 0 V GND H
24. warranty to cover handling and ship ping time This ensures that OMEGA s customers receive maximum coverage on each product If the unit malfunctions it must be returned to the factory for evaluation OMEGA s Cus tomer Service Department will issue an Authorized Return AR number immediately upon phone or written request Upon examination by OMEGA if the unit is found to be defec tive it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limited to mishan dling improper interfacing operation outside of design limits improper repair or unau thorized modification This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive cor rosion or current heat moisture or vibration improper specification misapplication misuse or other operating conditions outside of OMEGA s control Components which wear are not warranted including but not limited to contact points fuses and triacs OMEGA is pleased to offer suggestions on the use of its various products However OMEGA neither assumes responsibility for any omissions or errors nor assumes liabil ity for any damages that result from the use of its products in accordance with in formation provided by OMEGA either verbal or written OMEGA warrants only that the parts manufactured by it will be as specified an
25. where maximum LDX D output is required 2 If the output polarity is wrong reverse the transducer secondary connections terminals 7 amp 8 Move the transducer back and re check the zero position 3 Move the coarse gain link along from position 1 towards position 6 until the LDX D output is near the required value 4 Adjust the fine gain control to give the required output 5 The bi polar output is now set Proceed to step 5 If a uni polar output is required proceed to step 4 Example 10 V is required from a 1 mm transducer Set the transducer at the 1 mm position and set the output to 10 V Step 4 Setting uni polar full scale output adding an offset 1 Move the transducer to the null position LDX D output will be 0 V or 0 mA 2 Apply offset using the VE VE 5V and 10 V links and adjust the fine offset control to set precisely Both links may be used to give greater offset shift Proceed to step 5 Example 0 10 V is required for a 1 mm transducer Set the transducer to give 5 V over the full range and then with the transducer at null add 5 V offset Adjust the fine offset to give 5 V When the transducer is moved to the 1 mm position the output will be 10 V Example 4 20 mA is required for a 1 mm transducer Set the transducer to give 8 mA over range and then with the transducer at null add 5 V 210 mA offset Adjust the fine offset to give 12 mA When the transducer is moved to the 1 mm position the output will be
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