Omega LDX-4 User Manual Download Page 15

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7.1: Electrical

Parameter

Value

Comments

Signal Output

Output Voltage Range

up to ±10 VDC into 1 K

see notes 3 and 4

Output Residual Noise

<1 mVrms

Output Current

up to ±20 mA into 150

load

see note 5

Output Offset Coarse

±5 VDC (approx 10 mA)

fixed

link selectable

±10 VDC (approx 20 mA)

fixed

link selectable

Fine

±2.8 VDC (approx 5.6

mA)

Variable (adds to fixed

offsets)

Temperature Coefficient

Gain

<0.01% FRO/°C

Temperature Coefficient

Offset

<0.01% FRO/°C

Warm-Up

15 minutes recom-

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 and Connections

Parameter

Value

Comments

Transducer

5-pin circular DIN

Power Supply

Internal Terminal Block

Output Signal

Internal Terminal Block

Enclosure - Size

120 x 65 x 40 mm

Excluding connectors

Weight

300 g (0.66 lbs) approx.

Material of Case

Die-Cast Zinc Alloy (painted)

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...

Page 20: ...ine Paddlewheel Systems M U Totalizers Batch Controllers pH CONDUCTIVITY M U pH Electrodes Testers Accessories M U Benchtop Laboratory Meters M U Controllers Calibrators Simulators Pumps M U Industrial pH Conductivity Equipment DATA ACQUISITION M U Communications Based Acquisition Systems M U Data Logging Systems M U Wireless Sensors Transmitters Receivers M U Signal Conditioners M U Data Acquisit...

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