Omega | IP211 and EP211 Series | Owner Manual | Omega IP211 and EP211 Series Owner Manual

Omega IP211 and EP211 Series Owner Manual
User’s Guide
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IP211, EP211 SERIES
ELECTROPNEUMATIC CONVERTERS
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Servicing North America:
U.S.A.
Headquarters:
Omega Engineering, Inc.
Toll-Free: 1-800-826-6342 (USA & Canada only)
Customer Service: 1-800-622-2378 (USA & Canada only)
Engineering Service: 1-800-872-9436 (USA & Canada only)
Tel: (203) 359-1660
Fax: (203) 359-7700
e-mail: info@omega.com
For Other Locations Visit omega.com/worldwide
California Proposition 65
! WARNING: Cancer and Reproductive Harm
www.p65Warnings.ca.gov
The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves
the right to alter specifications without notice.
M4110/0519 IP211, EP211 SERIES
A
PRINCIPLE OF OPERATION
The 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 supported 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.
Figure 1
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.
3
A
M4110/0519 IP211, EP211 SERIES
PRODUCT CERTIFICATIONS
FACTORY 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.
CANADIAN 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 momentary, 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 operated in either
mode.
4
M4110/0519 IP211, EP211 SERIES
A
CALIBRATION
Once 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:
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.
5
A
M4110/0519 IP211, EP211 SERIES
FIGURE 2
E / P SCHEMATIC
RV1
I / P SCHEMATIC
121 Ω
R1
121 Ω
R2
BLACK
BLACK
J2
J2
RV1
100 Ω @ 25°C
R1
WHITE
J1
COIL
300 Ω
RT1
100 Ω @ 25°C
COIL
300 Ω
68 Ω
WHITE
J1
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.
6
INPUT SIGNAL
OUTPUT RANGE
4-20mA
4-20mA
4-20mA
4-20mA
0-5 VDC
0-5 VDC
0-10 VDC
0-5 VDC
4-20mA
3-15 PSIG
3-27 PSIG
3-120 PSIG
2-60 PSIG
3-15 PSIG
3-27 PSIG
3-120 PSIG
2-60 PSIG
6-30 PSIG
NOMINAL IMPEDANCE
(OHMS)
180
215
260
225
615
530
800
500
215
POTENTIOMETER RV1 SIZE
(OHMS)
1000
1000
1000
1000
500
500
1000
1000
1000
M4110/0519 IP211, EP211 SERIES
A
TROUBLESHOOTING
SYMPTOM
CAUSE
SOLUTION
1) Plugged or blocked orifice.
1) Remove orifice screw and clean
orifice 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.
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”.
Sluggish Performance or Reduced
Range
Transducer remains at start up no
matter the input signal3.
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.
7
A
M4110/0519 IP211, EP211 SERIES
Figure 3
8
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.
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.
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 2017 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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