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WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship 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 warranty to cover handling and shipping 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 Customer 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 defective, 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 mishandling, improper interfacing, operation outside of design limits, 

improper repair, or unauthorized 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 

corrosion; or current, heat, moisture or vibration; improper specification; misapplication; misuse or 

other operating conditions outside of OMEGA’s control. Components in which wear is not warranted, 

include but are 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 liability for any 

damages that result from the use of its products in accordance with information provided by OMEGA, 

either verbal or written. OMEGA warrants only that the parts manufactured by the company will be as 

specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS 

OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL 

IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS 

FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The 

remedies of purchaser set forth 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 special damages.

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 forth in 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, PURCHASER MUST OBTAIN AN 

AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN 

ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should 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.  

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 trademark of OMEGA ENGINEERING, INC.
© Copyright 2017 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, repro-

duced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written 

consent of OMEGA ENGINEERING, INC.

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  

problems relative to the product.

FOR NON-WARRANTY REPAIRS, consult 

OMEGA for current repair charges. Have the 

following 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 problems  

  relative to the product.

Summary of Contents for LDX-4

Page 1: ...LDX 4 e mail info omega com For latest product manuals www omegamanual info Shop online at omega com User sGuide ...

Page 2: ...om info omega com Section Title Section Title 1 0 Index 4 6 1 Voltage Connections 2 0 Safety Information 4 6 2 Current Connections 3 0 Introduction 4 7 Using an EMC Cable Gland 3 1 LDX 4 Enhancements 5 0 Setting up the Transducer and LDX 4 4 0 Installation 5 1 Links Explained 4 1 Mounting 5 2 Basic Procedure 4 2 Operational Environment 5 3 Sensitivity and the X2 X4 DIV2 4 2 1 Residential Commercia...

Page 3: ...harge This equipment is susceptible to ESD Electrostatic Discharge when being installed or adjusted or whenever the case cover is removed To prevent ESD related damage handle the conditioning electronics by its case and do not touch the connector pins During installation follow the guidelines below Ensure all power supplies are turned off If possible wear an ESD strap connected to ground If this i...

Page 4: ...all gain settings Fixed and variable offsets make setting of uni polar output easier Gain and offset adjustment are fully independent Selectable transducer excitation frequency Selectable transducer load resistances Selection between forward and reverse connection Fully CE Compliant Half Bridge transducers can now be accommodated with simple plug wiring changes For half bridge only variant see sec...

Page 5: ...here is equipment likely to produce high levels of electrical interference such as welders machine tools cut ting and stamping machines Connections should be made using screened cable Braided or foil screened cables may be used The cable screen should be connected to the LDX 4 case at cable entry point The case of the LDX 4 should be connected to a local ground An EMC cable gland is recommended Th...

Page 6: ...ly Connections to the power supply should be routed to one side as shown This helps to reduce interference between power supply wires and the more sensitive parts of the circuitry Transducer 0 V V E V O U T 0V I O U T C O A R S E G A IN 1 2 3 4 5 6 7 FINE GAIN COARSE OFFSET VE VE 5V 2 5V F IN E O F F S E T 1 0 K 2 K R F D IV 2 X 2 X 4 G BK W B R L O H I Signal Out Power Supply 4 4 Connecting the T...

Page 7: ...Cable Screen Black Case Plug view into pins Standard Half Bridge Gauging Probe Plug Connections Note 1 indicates inward m ovem ent of the tip Note 2 The transducer body m ay be disconnected from the cable screen by cutting the black wire inside the connector 4 2 1 3 5 LINK 4 5 Connecting the Power Supply The LDX 4 requires a dc power supply in the range 10 30 V A fully regulated supply is not requ...

Page 8: ... V is used then error voltages may be introduced 4 6 2 Current Connections Current output requires the use of purposely designed current input instrumenta tion Current output is more suitable for transmitting over longer distances be cause current is not lost due to wiring resistance Additionally with a low imped ance a current loop is less likely to pick up noise Iout Vout Power Supply 0V 10 30 V...

Page 9: ...hown below Case Wall Rotate Gland Body to Tighten 10 15 mm Screen 30 mm 125 mm Gland Body Plastic Insert Dome Nut Sealing Ring Rolled Back Screen Prepare cable as shown Slide the Dome nut sealing ring and plastic insert over cable Fold and roll the screen back over itself to form a lump Push cable into gland body followed by the plastic insert ensure anti rotation slots engage sealing ring and Dom...

Page 10: ... Options Standard Setting Course Gain Sets the basic gain 1 link on Positron 1 to 6 Link ON Position 1 Fine Gain Adjustment between course gain ranges Potentiometer Adjustment Mid Position Course Offset Shifts the output by a fixed amount Link ON VE or VE and Link ON 5V or 10V No offset Link Parked No offset Links Parked Fine Offset Fine trim around any fixed offset Potentiometer Adjustment Mid Po...

Page 11: ...cs are not known the standard link settings should be used If your transducer is known to be outside of the standard sensitivity range the X2 or DIV2 links will have to be used See section 5 3 STEP 2 Align LDX 4 Null and Transducer Null Any electrical offset in the LDX 4 is removed The transducer position is adjusted so that transducer and LDX 4 nulls are aligned Null the LDX 4 1 Put the Gain link...

Page 12: ...ducer to give 5 V over the full range and then with the transducer at null add 5 V offset Adjust the Fine Offset control 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 the full range and then with the transducer at null add 2 5 V approx 5 mA offset Adjust the Fine Offset co...

Page 13: ...cer Output Link ON DIV2 150 mV FR to 400 mV FR Low Transducer Output Link ON X2 55 mV FR to 150 mV FR Very Low Transducer Output Link ON X4 6 0 Half Bridge only Variant This is a half bridge optimized variant of the standard product The excitation fre quency is higher see specification and the transducer input connector is wired to accept half bridge transducers with standard connections 6 1 Conne...

Page 14: ...ent 24 VDC at 55 mA Voltage Range 10 to 30 VDC Current Range 140 mA at 10 V to 50 mA at 30 V Transducer Excitation Energizing Voltage 3 Vrms nominal see note 1 Energizing Frequency 2 5 kHz Lo or 5 kHz Hi nominal 10 kHz Lo or 13 kHz Hi link selectable Half Bridge version only Energizing Current 30 mA max Transducer Signal Input Input Signal Range Standard 400 to 2500 mV FR 6 gain ranges applies to ...

Page 15: ... mended Linearity 0 1 FRO Bandwidth 3dB 500 Hz typical Protection see note 6 Power Supply Reverse connection protected Inputs and Outputs Short circuit protected Transient and ESD Pro tected Certification see note 7 Immunity BS EN61000 6 2 2001 Immunity for Industrial Environments Emissions BS EN61000 6 3 2001 Emission for Residential commercial and light industrial environ ments 7 2 Mechanical an...

Page 16: ...rrent output may be used at the same time as voltage output Calibration of voltage and current cannot be individually adjusted 6 Protection applies to the product when fully installed according to the user manual During installation the top of the enclosure has to be removed for ac cess to user adjustments At this time standard ESD handling precautions for electronic equipment should be followed 7...

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Page 19: ...y 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 special damages 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 h...

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