125UT/125UTA
General Purpose Strain Gages—Tee Rosette
GAGE PATTERN DATA
GAGE
DESIGNATION
See Notes 1 and 4
CEA-XX-125UT-120
CEA-XX-125UT-350
CEA-XX-125UTA-350
RESISTANCE
(OHMS)
See Note 2
120 ± 0.4%
350 ± 0.4%
350 ± 0.2%
OPTIONS
AVAILABLE
See Note 3
P2,
SP35
P2,
SP35
P2,
SP35
DESCRIPTION
Two-element 90° tee rosette for general-purpose use.
Exposed solder tab area 0.10 x 0.07 in (2.5 x 1.8 mm).
actual size
Legend
ES = Each Section
S = Section (S1 = Section 1)
Grid Width
0.165 ES
4.19 ES
GAGE DIMENSIONS
Gage Length
0.125 ES
3.18 ES
Overall Length
0.325 CP
8.26 CP
CP = Complete Pattern
M = Matrix
Matrix Length
0.42
10.7
inch
millimeter
Matrix Width
0.45
11.4
Overall Width
0.365 CP
9.27 CP
GAGE SERIES DATA
—
See Gage Series datasheet for complete specifications
Series
CEA
Description
Universal general-purpose strain gages.
Strain Range
±5%
Temperature Range
–100° to +350°F (–75° to +175°C)
Note 1:
Insert desired S-T-C number in spaces marked XX.
Note 2:
Tolerance is increased when Option W, E, SE, LE, P, or SP35 is specified.
Note 3:
Products with designations and options shown in
bold
are not RoHS compliant.
Note 4:
Pattern names ending with “A” are built with Advanced Sensors Technology.
Document No.: 11230
Revision: 05-Jun-2019
For technical questions, contact
mm@vpgsensors.com
www.micro-measurements.com
1
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Vishay Precision Group, Inc.
Disclaimer
ALL PRODUCTS, PRODUCT SPECIFICATIONS AND DATA ARE SUBJECT TO CHANGE WITHOUT NOTICE.
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Copyright Vishay Precision Group, Inc., 2014. All rights reserved.
Document No.: 63999
Revision: 15-Jul-2014
www.vpgsensors.com
1
.158
[4]
.050
[1.27]
.170
[4.32]
.127
[3.24]
.070
[1.78]
.082
[2.1]
.165
[4.19] G.W.
.125
[3.18] G.L.
.325
[8.26]
.040 [1.02]
.293
[7.43]
.140
[3.56]
.050 [1.27]
.045 [1.14]
.017 [0.43]
.017 [0.43]
.017 [0.43]
.083
[2.11]
.083
[2.11]
.074
[1.88]
.074
[1.88]
.365
[9.27]
Micro-Measurements
Raleigh, North Carolina USA
CONSTRUCTION:
OPTIONS:
125UTA PATTERN LAYOUT
DRAWN BY:
DATE:
SCALE:
DWG. #
PROJ. ENG.
DATE:
CEA
RESISTANCE:
REFERENCE:
.045 [1.14]
OS
AH
2018-06-20
2018-06-20
N.T.S.
ALL DIMENSIONS ARE IN INCHES
[mm].
REVISION:
MS-125UTA-10549
~
Designation System
Stress Analysis Strain Gages
The Strain Gage Designation System described below applies to Micro-Measurements General-Use Strain Gages.
Self-Temperature-Compensation (S-T-C)
Foil Alloy
Carrier Matrix (Backing)
Active Gage Length in Mils
[0.001 in
(0.0254 mm)]
Grid and Tab Geometry
Resistance in Ohms
Optional Feature
Example:
E:
Open-faced cast polyimide
backing.
XXX - XX - XXXXX - XXX
A:
Constantan alloy in
self-temperature-
compensated form.
P:
Annealed
Constantan.
D:
Isoelastic alloy.
K:
Nickel-chromium
alloy (similar to
Karma).
The S-T-C number
is the approximate
thermal expansion
coefficient in ppm/°F of
the structural material
on which the gage is to
be used. The following
S-T-C numbers are
available:
A:
00, 03, 05, 06, 09,
13, 15, 18, 30, 50
P:
08, 40
K:
00, 03, 05, 06, 09,
13, 15
D:
Not available in
self-temperature-
compensated form.
‘DY’ is used instead.
Option XX
W:
Integral printed
circuit terminal,
polyimide
encapsulation.
E:
Polyimide
encapsulation,
leaving a portion
of solder tab
exposed.
CE:
Thin, flexible gages with
a cast polyimide backing
and encapsulation featuring
large, rugged, copper-
coated solder tabs. This
construction provides
optimum capability for
direct leadwire attachment.
L2:
Thin, laminated, polyimide-
film backing featuring
encapsulated grids with
preattached leadwire
ribbons.
C2:
Thin, laminated, polyimide-
film backing featuring
encapsulated grids with
leadwire cables.
W:
Fully encapsulated,
glass-fiber-reinforced
epoxy phenolic resin. High
endurance leadwires.
N2:
The ‘N2’ matrix provides an
open faced gage on a thin,
high-performance laminated
polyimide film backing.
S2:
Gage grid and solder tabs
fully encapsulated in a thin,
flexible, laminated polyimide
film. Provided with large
[0.030 in
(0.75 mm)]
solder
pads for ease of leadwire
attachment.
S:
Full encapsulation identical
to the W matrix, but with
solder dot connections
instead of leadwires.
SE:
Solder dots
plus polyimide
encapsulation.
L:
Preattached, soft,
formable copper
leads.
LE:
Leads plus
polyimide
encapsulation.
P:
Preattached
leadwire cables
and encapsulation.
P2:
Preattached
leadwire cables for
CEA-Series gages.
www.micro-measurements.com
8
For technical questions, contact
mm@vpgsensors.com
Document No.: 11502
Revision: 26-Aug-2015
Gage Series Selection Chart
Standard Stress Analysis Strain Gages
GAGE
SERIES
DESCRIPTION AND
PRIMARY APPLIATION
Constantan foil in combination with a tough,
flexible, polyimide backing. Wide range of
options available. Primarily intended for
general-purpose static and dynamic stress
analysis. Not recommended for highest
accuracy transducers.
Universal general-purpose strain gages.
Constantan grid completely encapsulated
in polyimide, with large, rugged copper-
coated tabs. Primarily used for general-
purpose static and dynamic stress analysis.
General-purpose stress analysis strain
gages. Supplied with preattached cables
for direct connection to instrumentation.
General-purpose stress analysis strain
gages. Supplied with preattached leadwire
ribbons.
Open-faced constantan foil gages with a
thin, laminated, polyimide-film backing.
Primarily recommended for use in
precision transducers, the N2A Series is
characterized by low and repeatable creep
performance. Also recommended for stress
analysis applications employing large gage
patterns, where the especially flat matrix
eases gage installation.
Fully encapsulated constantan gages with
high-endurance leadwires. Useful over
wider temperature ranges and in more
extreme environments than EA Series.
Option W available on some patterns, but
restricts fatigue life to some extent.
Fully encapsulated constantan gages with
solder dots. Same matrix as WA Series.
Same uses as WA Series but derated
somewhat in maximum temperature and
operating environment because of solder
dots.
Specially annealed constantan foil with
tough, high-elongation polyimide backing.
Used primarily for measurements of large
post-yield strains. Available with Options
E, L, and LE (may restrict elongation
capability).
Isoelastic foil in combination with tough,
flexible polyimide film. High gage factor and
extended fatigue life excellent for dynamic
measurements. Not normally used in static
measurements due to very high thermal-
output characteristics.
TEMPERATURE
RANGE
Normal:
–100° to +350°F
(–75° to +175°C)
Special or short term:
–320° to +400°F
(–195° to +205°C)
Normal:
–100° to +350°F
(–75° to +175°C)
Stacked rosettes limited
to +150°F (+65°C)
–60° to +180°F
(–50° to +80°C)
–100° to +250°F
(–75° to +120°C)
STRAIN
RANGE
±3% for gage
lengths under
1/8 in (3.2 mm)
±5% for 1/8 in
and over
±3% for gage
lengths under
1/8 in (3.2 mm)
±5% for 1/8 in
and over
±3%
FATIGUE LIFE
STRAIN LEVEL
IN µ
ε
NUMBER
0F CYCLES
EA
±1800
±1500
±1200
10
5
10
6
10
8
CEA
±1500
±1500
10
5
10
6
*
*Fatigue life improved
using low-modulus solder.
±1700
±1500
±1700
±1500
10
5
10
6
10
5
10
6
C2A
L2A
±3%
N2A
Normal static
transducer service:
–100° to +200°F
(–75° to +95°C)
±3%
±1700
±1500
10
6
10
7
WA
Normal:
–100° to +400°F
(–75° to +205°C)
Special or short term:
–320° to +500°F
(–195° to +260°C)
Normal:
–100° to +400°F
(–75° to +205°C)
Special or short-term:
–320° to +450°F
(–195° to +230°C)
±2%
±2000
±1800
±1500
10
5
10
6
10
7
SA
±2%
±1800
±1500
10
6
10
7
EP
–100° to +400°F
(–75° to +205°C)
±10% for gage
lengths under
1/8 in (3.2 mm)
±20% for 1/8 in
and over
±2%
Nonlinear at
strain levels
over ±0.5%
±1000
10
4
EP gages show zero shift
under high-cyclic strains.
ED
Dynamic:
–320° to +400°F
(–195° to +205°C)
±2500
±2200
10
6
10
7
Document No.: 11503
Revision: 26-Aug-2015
For technical questions, contact
mm@vpgsensors.com
www.micro-measurements.com
9
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