Omega Products EP211 Installation Manual

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User’s Guide

IP211, EP211 SERIES

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Servicing North America:

USA: O

ne Omega Drive, P.O. Box 4047

ISO 9001 Certified Stamford CT 06907-0047

TEL: [phone] FAX: [phone]
e-mail: [e-mail]

Canada: 976 Bergar

Laval (Quebec) H7L 5A1, Canada
TEL: [phone] FAX: [phone]
e-mail: [e-mail]

For immediate technical or application assistance:

USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA

®

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

®

Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN

®

TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA

Mexico: En Espan˜ ol: [phone]-7803 e-mail: [e-mail]

FAX: [phone] [e-mail]

Servicing Europe:

Benelux: Postbus 8034, 1180 LA Amstelveen, The Netherlands

TEL: [phone] FAX: [phone]
Toll Free in Benelux: 0800 0993344
e-mail: [e-mail]

Czech Republic: Frystatska 184, 733 01 Karviná, Czech Republic

TEL: [phone] FAX: [phone]
Toll Free: 0800-1-66342 e-mail: [e-mail]

France: 11, rue Jacques Cartier, 78280 Guyancourt, France

TEL: [phone] FAX: [phone]
Toll Free in France: 0800 466 342
e-mail: [e-mail]

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

TEL: [phone] FAX: [phone]
Toll Free in Germany: 0800 639 7678
e-mail: [e-mail]

United Kingdom: One Omega Drive, River Bend Technology Centre

ISO 9002 Certified Northbank, Irlam, Manchester

M44 5BD United Kingdom
TEL: [phone] FAX: [phone]
Toll Free in United Kingdom: 0800-488-488
e-mail: [e-mail]

OMEGAnet®Online Service Internet e-mail

www.omega.com [e-mail]

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, human applications.

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PRINCIPLE OF OPERATION

T

he transducer is a force balance device in which a coil is suspended in the field of a magnet by a flexure. Current flowing
through the coil generates axial movement of the coil and flexure. The flexure moves against the end of a nozzle, and creates
a back pressure in the nozzle by restricting air flow. This back pressure acts as a pilot pressure to an integral booster relay.
Consequently, as the input signal increases (or decreases, for reverse acting), output pressure increases proportionally.

Zero and span are calibrated by turning easily accessible adjusting screws on the front face of the unit. The zero adjustment
causes the nozzle to move relative to the flexure. The span adjustment is a potentiometer that limits the flow of current
through the coil. A thermistor circuit in series with the coil provides temperature compensation.

MOUNTING

The transducer can be mounted at any angle, but should be
calibrated after mounting. For maximum output pressure
stability, it should be mounted vertically in a vibration free
location or such that the vibration is isolated to the X and Z
axis as shown in

Figure 3.

Pipe: Due to its light weight , the transducer may be sup-

ported by the piping used for the supply and output.

Panel: (with access to rear of panel) Attach transducer
(See Fig. 3), to panel using two 10-32 screws and two
threaded mounting holes on the back of the unit.

Panel: (with no access to rear of panel) Attach bracket
(see Fig 1 and 3), to transducer using two 10-32 screws
on the back of the unit and mount bracket to panel using
four 8-32 screws.

AIR CONNECTIONS

• Supply Air must be instrument quality air regulated

between the minumum and maximum specified on the
nameplate of the transducer.

• Instrument quality air consists of :

a

A dew point less than 35˚F
b No particles larger than three microns
c Maximum oil content of 1 ppm

• All unused ports must be plugged.

Supply: Connect supply to the1/4" NPT ports marked “IN” on the base of the transducer. Avoid getting pipe sealant inside
the piping or transducer.

Output: Connect output to the 1/4" NPT ports marked “OUT” on the base of the transducer. The pipe plugs may be removed
from the two auxiliary output ports for a pressure gauge or as an alternative output port.

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P

RODUCT CERTIFICATIONS

F

ACTORY MUTUAL

INTRINSIC SAFETY:

The (I/P Models I/P211-X15-ISF and I/P211-X27-ISF) transducers are rated intrinsically safe by FM for:

- CLASS I, DIVISION 1, GROUPS A,B,C,D T6, Ta=40˚C HAZARDOUS LOCATIONS when installed in accordance with
interconnection drawing 990-440-000, and the specific barrier models.
NOTICE: The above ratings only apply when installed per Interconnection Diagram 990-440-000

- Nonincendive for CLASS I, DIVISION II, GROUPS A, B, C, D.

C

ANADIAN STANDARDS ASSOCIATION

INTRINSIC SAFETY: The I/P (I/P211-X15-ISC and I/P211-X15-ISC) are rated intrinsically safe by CSA for: Class I Groups A,

B, C, and D; Class II Groups E, F, and G; and Class III, when connected through certified diode safety barriers in accor­dance with Interconnection diagram, 990-440-000

ELECTRICAL CONNECTIONS

PRECAUTIONS TO BE OBSERVED DURING INSTALLATION

The Transducers were tested at the EMC Test Centre, Dunfermline, Fife, KY11 5LB to the Electromagnetic
Compatibility Directive effective January 1, 1996. The relevant EMC specifications tested were the following:
EN 50081-1 (1992) and EN 50082-1 (1992). A Technical Construction File, Serial #107 was written and
Certificate of Conformity issued by a Competent Body.

EN 50081-1 (1992): Test results confirmed that no precautions need to be observed during installation regarding electro­magnetic emissions from the I/P & E/P 211 Transducers.

EN 50082-1 (1992): The following precautions should be taken during installation to maintain the advertised accuracy
specifications for the Transducers. The input wiring to the transducer should be isolated from other high voltage transient
wiring. The momentary switching on and off of nearby relays, motors, or other high capacitive or inductive loads can have a
minor effect on the terminal based linearity specification (1.0% of span, standard range models). Any change in output pres­sure is minimal and momentarily, and is considered to be within its performance capabilities. Use of a ferrite bead collar on
the input wires entering the transducer is recommended should installation next to high electromagnetic interference be
necessary.

Connect electrical signal to the wires exiting from the side of transducer through the 1/2" NPT conduit fitting.

For

DIRECT ACTING: (where increasing the input signal increases output pressure), connect the positive input signal to

the black transducer lead, and the negative to the white transducer lead.

For

REVERSE ACTING: (where increasing the input signal decreases output pressure), connect the positive input signal

to the

white transducer lead, and the negative to the black transducer lead. Agency Approved Models may also be oper-

ated in either mode.

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C

ALIBRATION

O

nce the transducer has been mounted, and air supply connections finished, the unit’s calibration must be checked before

placing into service.

Note: input percentage refers to the following examples:

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If 4 to 20 mA If 0 to 10 VDC If 0 to 5 VDC If 1 to 5 VDC

0% = 4 mA 0% = 0.00 VDC 0% = 0.00 VDC 0% = 1.00 VDC

25% = 8 mA 25% = 2.50 VDC 25% = 1.25 VDC 25% = 2.00 VDC
50% = 12 mA 50% = 5.00 VDC 50% = 2.50 VDC 50% = 3.00 VDC
75% = 16 mA 75% = 7.50 VDC 75% = 3.75 VDC 75% = 4.00 VDC

100% = 20 mA 100% = 10.00 VDC 100% = 5.00 VDC 100% = 5.00 VDC

Forward Acting

1. Apply the 0% input signal to unit and adjust the “Zero” adjusting screw to the low setpoint output. Turn screw counter­clockwise to increase output. If there is no change in output, keep turning adjustment screw counter-clockwise until
output begins to rise. It is imperative that the output pressure be closely monitored as turning the zero screw excessive­ly could damage the flexure.

2. Apply the 100% signal to unit and adjust “Span” adjusting screw until output is at the high setpoint.

3.

IMPORTANT: On I/P (Current) input models, turn the “Span” adjusting screw counter-clockwise to increase output. On
E/P (Voltage) input models, turn the “Span” adjusting screw clockwise to increase the output pressure.

4. Repeat steps 1& 2 until unit is calibrated.

Reverse Acting

1. Apply the 0% input signal to unit and adjust "Zero" adjusting screw until output reaches the high output pressure set­point. Turn counter-clockwise to increase.

2. Apply the 100% input signal to unit and adjust "Span" adjustment until output pressure is at the low setpoint.
IMPORTANT: On I/P (Current) input models, turn the “Span” adjusting screw clockwise to increase output. On E/P
(Voltage) input models, turn the “Span” adjusting screw counter-clockwise to increase the output pressure.

3. Repeat steps 1& 2 until unit is calibrated.

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SIGNAL IMPEDANCE

The input impedance will vary depending upon the potentiometer setting of the “SPAN (RV1)”, (SEE FIG. 2). The I/P circuit
design consists of a resistor and potentiometer in parallel with the coil/flexure. The E/P circuit utilizes a potentiometer in
series with the coil/flexure The following are some of the nominal impedences that would be measured across the signal
leads of the average calibrated transducer. These values are helpful when determining power requirements and for trouble
shooting.

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INPUT SIGNAL OUTPUT RANGE

NOMINAL IMPEDANCE

(OHMS)

POTENTIOMETER RV1 SIZE

(OHMS)

4-20mA 3-15 PSIG 180 1000
4-20mA 3-27 PSIG 215 1000
4-20mA 3-120 PSIG 260 1000

4-20mA 2-60 PSIG 225 1000
0-5 VDC 3-15 PSIG 615 500
0-5 VDC 3-27 PSIG 530 500

0-10 VDC 3-120 PSIG 800 1000

0-5 VDC 2-60 PSIG 500 1000

4-20mA 6-30 PSIG 215 1000

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TROUBLESHOOTING

Note: If you experience an unusual problem that is not described in this section, or if troubleshooting procedures will not
restore the unit to normal operation, please contact Omega.

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SYMPTOM CAUSE SOLUTION

Sluggish Performance or Reduced
Range.

1

) Plugged or blocked orifice.

1

) Remove orifice screw and clean

o

rifice with wire or pin <0.009"

diameter

2) Supply pressure too low.

2) Supply pressure must be at least 5
PSIG above the 100% output.

Transducer remains at start up no
matter the input signal.

1) Zero set too low.

1) Turn zero adjustment counter­clockwise until output pressure
increases then follow calibration
procedure.

2) Electrical connection has opened or
wrong type of signal applied.

2)

Check electrical connections to
insure that there is a correct input
signal reaching the transducer.

Transducer works in reverse.
(Pressure goes down when input
signal goes up.)

Wires connected in reverse

Insure wiring is connected per Electrical
Connection section.

Output Pressure same as supply
Pressure with no signal effect.

Pneumatic connections reversed or
supply and output both connected to
“IN” ports.

Insure supply is connected to port
marked “IN” and output is connected to
port marked “OUT”.

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M-4110/1104 IP211, EP211 SERIES

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Figure 3

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W

ARRANTY/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 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 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 pr

oduct under war

ranty,

and

3. Repair instructions and/or specific problems
r

elative 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

r

elative to the product.

OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our cus

-

tomers 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 written consent of
OMEGA ENGINEERING, INC.

O-T1000.qxd 4/11/05 9:16 AM Page 9

M4110/1104 IP211, EP211 SERIES/022005

Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGA…Of Course!

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