Omega LE902 User guide

model no. LE902-12-S

LE902-12-P
LE902-25-S
LE902-25-P

LE902 series
user manual

®

http://www.omega.com
e-mail: [email protected]

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Servicing North America:

USA:

One Omega Drive, Box 4047

ISO 9001 Certified

Stamford, CT 06907-0047
Tel: [phone] FAX: [phone]
e-mail: [email protected]

Canada: 976 Bergar

Laval (Quebec) H7L 5A1
Tel: [phone] FAX: [phone]
e-mail: [email protected]

For immediate technical or application assistance:

USA and Canada:

Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA

SM

Customer Service: 1-800-622-2378 / 1-800-622-BEST

SM

Engineering Service: 1-800-872-9436 / 1-800-USA­WHEN

SM

TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA

Mexico and
Latin America: Tel: [phone] FAX: [phone]

En Espan ol: (95) 203-359-7803
e-mail: [email protected]

Servicing Europe:

Benelux:

Postbus 8034, 1180 LA Amstelveen, The Netherlands
Tel: [phone] FAX: [phone]
Toll Free in Benelux: 0800 0993344
e-mail: [email protected]

Czech Republic: ul. Rude armady 1868, 733 01 Karvina-Hranice

Tel: [phone] FAX: [phone]
Toll Free: 0800-1-66342
e-mail: [email protected]

France: 9, rue Denis Papin, 78190 Trappes

Tel: [phone] FAX: [phone]
Toll Free in France: 0800-4-06342
e-mail: [email protected]

Germany/Austria: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany

Tel: [phone] FAX: [phone]
Toll Free in Germany: 0130 11 21 66
e-mail: [email protected]

United Kingdom: One Omega Drive, River Bend Technology Centre

ISO 9002 Certified Northbank, Irlam, Manchester

M44 5EX, England
Tel: [phone] FAX: [phone]
Toll Free in the United Kingdom: 0800-488-488
e-mail: [email protected]

OMEGAnet®On-Line Service Internet e-mail

http://www.omega.com [email protected]

It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is constantly pursuing certification of its products to the European
New Approach Directives. 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, patient-connected applications.

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Section Title Page

1.0 Index . . . . . . . . . . . . . . . . . . . . .1

2.0 Safety summary . . . . . . . . . . . . .2

3.0 Handling and maintenance . . . .3

4.0 Linear Encoder Connection . . . .5

4.1 Connection to a Digital Readout 5

4.2 Connection to PC or Digital

Readout via Orbit Network . . . . .6

Section Title Page

5.0 Mechanical Installation . . . . . . . .7

6.0 Operation . . . . . . . . . . . . . . . . . .9

7.0 Specification . . . . . . . . . . . . . . .10

8.0 Connections . . . . . . . . . . . . . . . 11

9.0 Outline Drawings . . . . . . . . . . . 12

Warranty/Disclaimer . . . . . . . . . .

1.0 Index

1.0: Index



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Terms in this Handbook

WARNING statements identify conditions or

practices that could result in personal injury or loss

of life.

CAUTION statements identify conditions or practices

that could result in damage to the equipment or

other property.

Symbols in this manual

This symbol indicates where applicable

cautionary or other information is to be found.

WARNINGS:

Do not operate in an explosive atmosphere

To avoid explosion, do not operate this equipment in

an explosive atmosphere.

Air Pressure

On LE902-12-P and LE902-25-P under no

circumstances should the recommended maximum

overpressure of 1.0 bar (14.5 psi) be exceeded.

NOTES:

This equipment contains no user serviceable parts

This equipment must be returned to your Omega

dealer for all servicing and repair.

Low Voltage

This equipment operates at below the SELV and is

therefore outside the scope of the Low Voltage

Directive.

2.0: Safety Summary

2.0: Safety Summary

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The Omega range of Linear Encoders are precision

instruments and should be handled with care. Where

possible the Linear Encoder should be stored in its

protective box when not being used.

These Linear Encoders are designed to be maintenance

free, additional periodic lubrication is unnecessary.

Contacts with solvents should be avoided. Any attempt

to dismantle the Linear Encoder will invalidate the

warranty.

3.0: Handling & Maintenance

3.0: Handling & Maintenance

!

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Replacing the probe tip

1. Slide back gaiter (fitted to IP65 and pneumatic

versions only) to reveal the hole in the shaft.

2. Insert locking tool (supplied) in the hole.

3. Unscrew tip while holding locking tool to prevent

any damage to the read head.

4. Install new tip while holding locking tool.

5. Hand tighten tip.

6. Slide down gaiter, (IP65 and pneumatic versions

only).

3.0: Handling & Maintenance

3.0: Handling & Maintenance (continued)

"

M-3336 02/01LE902

Gaiter

Locking
Tool

Tip

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4.1: Connection to Digital Readout

4.0: Linear Encoder Connection

4.0: Linear Encoder Connection

#

LE902

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M-3336 02/01

4.0: Linear Encoder Connection

$

4.2: Connection to a PC or Digital Readout via Orbit Network

4.0: Linear Encoder Connection (Continued)

LE902

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CAUTIONS:

Ensure that the probe is not subjected to excessive
over-travel, or side loading at the tip greater than that
corresponding to a 0.5mm (0.02) lift on a Ø3
(0.118) ball

When mounting the Linear Encoder avoid the risk of
distortion of the bearing assembly by over-tightening
of the mounting screws.

Notes:

It is important to ensure that the probe is
perpendicular to measuring table to avoid
introducing cosine errors.

Do not use excessive torque when tightening gauge
stand clamp screws.

Keep cable away from moving parts to avoid
potential damage.

Protect probe against shock loading or impact!

5.0: Mechanical Installation

5.0: Mechanical Installation

%

LE902

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Clamping Configurations

When mounting

Linear Encoder do

not over tighten

clamp screws.

Recommended maximum tightening torque

Where d = screw dia mm

P = screw pitch mm

assuming a V form thread and 0.15 coefficient of

friction.

Note: A clearance hole in the fixturing of Ø9.5mm

(0.374) is advisable around the gaiter for

satisfactory operation.

5.0: Mechanical Installation

5.0: Mechanical Installation (continued)

&

M-3336 02/01LE902

Ø8 mm h6
Dia. 0.315"+ 0.0006"

0.28d (( ) + 0.15)

(1-(0.15 ))

Π

Π

P

P

d

d

=

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Split
Collet

Ø8 mm h6
Dia. 0.315"+ 0.0006"

Finger Lift

Snaps over probe tip

enabling tip to be lifted

without transferring heat

to shaft.

Cable Lift

Allows tip to be retracted

without touching Linear

Encoder. Cable retract

screws into probe body

after removal of blanking

screw.

Pneumatic Operation

A Pneumatic nozzle is

fitted as standard to

LE-902-12-P &

LE902-25-P. By applying

air between 0.5 & 0.8 bar

(7.25 & 11.6 psi)

measuring tip will extend

to meet component

under test. On no

account should a

pressure exceeding 1.0

bar (14.5 psi) be applied.

WARNING: Damage/injury could be caused if the

maximum recommended air pressure is exceeded.

CAUTION

Ensure that air supply for pneumatic operation

is clean, dry and oil free.

6.0: Operation

6.0: Operation

'

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Cable Lift

Pneu matic
Supply

7.0: Specification

Model LE902-12 LE902-25

Stroke 12mm (0.5) 25mm(1.0)

Resolution 0.05µm (2 millionths inch)

Accuracy ± 0.5µm (20 millionths inch)

Reference temp 20°C (68°F)

Slew rate 0.5 m/sec (1.5 ft/sec)

Operating ANY

attitude

Gauging forces:

(typical at

mid stroke)

Downwards 60gm (2.1 oz)

Upwards 10gm (0.3 oz)

Horizontal 50gm (1.7 oz)

Max side load 100gm (3.5 oz)

Shock 100g (6ms)

Vibration 10g (50-2000 Hz)

Cable length 2m / 6.5 ft

Temp range

- Operating 0° to 50°C (32° to 122°F)

- Storage -20° to +70°C (-4° to 158°F)

IP Rating

Probe: IP50 (IP65 optional)

Interface Electronics: IP53

Mounting 8mm / 0.315 in

h6 h7

Tip thread M2.5x6 deep

size

Supply Voltage

5V ± 0.25VDC

Supply Current (max) 60mA

Serial Communications 9600 Baud or

Baud Rate 187.5K Baud

Serial Communications Orbit Network Protocol

Protocol

Maximum Reading Rate 1000 readings/sec

EMC EN50081-1 &

EN50082-1

7.0: Specification



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PIE Pin assignment

Pin Function

1 (none)

2 RS485(A)

3 RS485(B)

40V

50V

6 +5V

7 +5V

8 +5V

9 0V

PIE can be fitted directly into the back of the Digital

Readout or linked into the Orbit Network using the

stackable T-CON connectors.

8.0: Connections

8.0: Connections



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162738495

M-3336 02/01

9.0:Outline Drawings

9.0: Outline Drawings



LE902

Note:

All dimensions in mm
and inches
All dimensions stated
are nominal

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M-3336 02/01

9.0:Outline Drawings

9.0: Outline Drawings

!

LE902

Note:

All dimensions in mm
and inches
All dimensions stated
are nominal

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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 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 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
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 it will be as specified and 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 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.

FOR W

ARRANTY 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.

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 1998 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 written consent
of OMEGA ENGINEERING, INC.

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LE902

Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGAOf Course!

TEMPERATURE

G

Thermocouple, RTD & Thermistor Probes, Connectors,

Panels & Assemblies

G

Wire: Thermocouple, RTD & Thermistor

G

Calibrators & Ice Point References

G

Recorders, Controllers & Process Monitors

G

Infrared Pyrometers

PRESSURE, STRAIN AND FORCE

G

Transducers & Strain Gauges

G

Load Cells & Pressure Gauges

G

Displacement Transducers

G

Instrumentation & Accessories

FLOW/LEVEL

G

Rotameters, Gas Mass Flowmeters & Flow Computers

G

Air Velocity Indicators

G

Turbine/Paddlewheel Systems

G

Totalizers & Batch Controllers

pH/CONDUCTIVITY

G

pH Electrodes, Testers & Accessories

G

Benchtop/Laboratory Meters

G

Controllers, Calibrators, Simulators & Pumps

G

Industrial pH & Conductivity Equipment

DATA ACQUISITION

G

Data Acquisition & Engineering Software

G

Communications-Based Acquisition Systems

G

Plug-in Cards for Apple, IBM & Compatibles

G

Datalogging Systems

G

Recorders, Printers & Plotters

HEATERS

G

Heating Cable

G

Cartridge & Strip Heaters

G

Immersion & Band Heaters

G

Flexible Heaters

G

Laboratory Heaters

ENVIRONMENTAL
MONITORING AND CONTROL

G

Metering & Control Instrumentation

G

Refractometers

G

Pumps & Tubing

G

Air, Soil & Water Monitors

G

Industrial Water & Wastewater Treatment

G

pH, Conductivity & Dissolved Oxygen Instruments

M-3336 02/01

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