E-8
E
STRAIN GAGES
OMEGA®STRAIN GAGES
GENERAL PURPOSE STRAIN GAGES
FOR STATIC AND DYNAMIC APPLICATIONS
Basic Unit
$
49
⻬⻬
Very Flexible,
Mechanically Strong
⻬⻬
Small Bending Radius
⻬⻬
Broad Temperature
Range
⻬⻬
Ribbon Leads, Solder
Pads, or Wire Lead
Connections
⻬⻬
Clear Alignment Marks
⻬⻬
Affix with Cold or Hot
Curing Adhesives
OMEGA®strain gages are available
in a variety of different models to
cover most strain measurement
applications. Their rugged
construction and flexibility make
them suitable for static and dynamic
measurement with a high degree of
accuracy. The measuring grid is
formed by etching Constantan foil,
which is then completely sealed in a
carrier medium composed of
polyimide film.
MOST POPULAR
MODELS
The most popular strain
gage models are
highlighted. Delivery of
these models is normally
off-the-shelf.
To Order
(Specify Model Number)
MAX
DIMENSIONS [MM] PERMITTED ACCESSORY
TYPE SERIES PRICE NOMINAL GRID CARRIER BRIDGE TERMINAL
PER
RESIS- ENERGIZING PADS
MODEL NO. PKG TANCE A B C D VOLTAGE PART NO. FIG.
OF 10
(
Ω) (V RMS)
SG-1.5/120-LY11 $49 120 1.5 1.1 4.8 3.5 2.5 TP-1 1
SG-2/350-LY11 55 350 2.0 1.8 7.5 4.5 4 TP-1 2
SG-3/120-LY11 55 120 3.0 1.5 8.0 4.0 4 TP-2 3
SG-3/350-LY11 55 350 3.0 2.5 8.0 6.0 8 TP-2 3
SG-6/120-LY11 70 120 6.0 3.0 12.5 6.0 9 TP-3 4
SG-7/350-LY11 79 350 7.0 3.5 14.0 8.0 15 TP-3 4
SG-7/1000-LY11 145 1000 7.0 3.8 12.0 6.0 20 TP-3 4
SG-13/1000-LY11 125 1000 .13.5 5.5 24.0 12.0 30 TP-3 5
SG-1.5/120-LY13 49 120 1.5 1.1 4.8 3.5 3 TP-1 1
SG-2/350-LY13 55 350 2.0 1.8 7.5 4.5 5 TP-1 2
SG-3/120-LY13 55 120 3.0 1.5 8.0 4.0 6 TP-2 3
SG-3/350-LY13 55 350 3.0 2.5 8.0 6.0 8 TP-2 3
SG-6/120-LY13 70 120 6.0 3.0 12.5 6.0 10 TP-3 4
SG-7/350-LY13 79 350 7.0 3.5 14.0 8.0 15 TP-3 4
SG-7/1000-LY13 145 1000 7.0 3.8 12.0 6.0 20 TP-3 4
SG-13/1000-LY13 125 1000 13.5 5.5 24.0 12.0 30 TP-3 5
⻬ Encapsulated with
Ribbon Leads
(Accessory Terminal
Pads Are Used to
Attach Heavier Gage
Wire to Ribbon Leads)
LY11
Temperature characteristics
matched to steel
LY13
Temperature characteristics
matched to aluminum
For Accessory Terminal Pads, see page E-25.
1
23
d
c
a
b
45
OMEGA®STRAIN GAGES
b
d
a
c
45
12 3
FOIL GAGES
To Order
TYPE SERIES PRICE NOMINAL GRID CARRIER BRIDGE TERMINAL
Diagrams to Actual Size
U Encapsulated with
Solder Pads (Accessory Terminal Pads
Are Used for Strain
Relief and Connecting
Different Wire Gages)
LY41
Temperature characteristics
matched to steel
LY43
Temperature characteristics
matched to aluminum
(Specify Model Number)
MODEL NO. PKG TANCE A B C D VOLTAGE PART NO. FIG.
SG-1.5/120-LY41 $45 120 1.5 1.1 4.8 3.5 2.5 TP-1 1
SG-2/350-LY41 45 350 2.0 2.5 7.8 6.0 4 TP-1 2
SG-3/120-LY41 49 120 3.0 1.5 8.0 4.0 4 TP-2 3
SG-3/350-LY41 45 350 3.0 2.5 8.0 6.0 8 TP-2 3
SG-6/120-LY41 62 120 6.0 3.0 12.5 6.0 9 TP-3 4
SG-7/350-LY41 65 350 7.0 3.5 14.0 8.0 15 TP-3 4
SG-7/1000-LY41 135 1000 7.0 3.8 12.0 6.0 20 TP-3 4
SG-10/120-LY41 69 120 10.8 3.2 16.4 6.3 15 TP-3 5
SG-13/1000-LY41 115 1000 13.5 5.5 24.0 12.0 30 TP-3 5
SG-1.5/120-LY43 45 120 1.5 1.1 4.8 3.5 3 TP-1 1
SG-2/350-LY43 45 350 2.0 2.5 7.8 6.0 5 TP-1 2
SG-3/120-LY43 49 120 3.0 1.5 8.0 4.0 6 TP-2 3
SG-3/350-LY43 45 350 3.0 2.5 8.0 6.0 8 TP-2 3
SG-6/120-LY43 62 120 6.0 3.0 12.5 6.0 10 TP-3 4
SG-7/350-LY43 65 350 7.0 3.5 14.0 8.0 15 TP-3 4
SG-7/1000-LY43 135 1000 7.0 3.8 12.0 6.0 20 TP-3 4
SG-10/120-LY43 69 120 10.8 3.2 16.4 6.3 15 TP-3 5
SG-13/1000-LY43 115 1000 113.5 5.5 24.0 12.0 30 TP-3
DIMENSIONS [MM] PERMITTED ACCESSORY
PER
OF 10
RESIS- ENERGIZING PADS
(
Ω) (V RMS)
30 AWG Or Ribbon Leads 20-28 AWG Instrumentation Wire
MAX
Typical Strain
Gage Installation
To Order
TYPE SERIES PRICE NOMINAL GRID CARRIER BRIDGE TERMINAL
Diagrams to Actual Size
U Extra Long Gages
for Inhomogeneous
Material
U Solder Pads, Not
Encapsulated
(Accessory Terminal Pads Are
Used for Strain Relief and
Connecting Different Gage Wires)
LY40
Temperature characteristics uncompensated
(Specify Model Number)
MODEL NO. PKG TANCE A B C D VOLTAGE PART NO. FIG.
SG-30/120-LY40 $105 120 24.5 8.0 41.0 13.0 20 TP-3 1
SG-50/120-LY40 129 120 51.5 8.0 68.5 16.0 25 TP-3 2
SG-150/240-LY40 135 240 153.0 3.5 167.0 10.0 35 TP-3 4
PER
OF 5
Terminal Pads for Stress Relief and Junction for Different Gage Wires
DIMENSIONS [MM] PERMITTED ACCESSORY
RESIS- ENERGIZING PADS
(
Ω) (V RMS)
For Accessory Terminal Pads, see page E-25.
MAX
page E-25
E-9
a
b
c
a
b
c
a
b
c
ab c
a
c
b
OMEGA®STRAIN GAGES
SPECIFICATIONS CHART
SG SERIES KFG SERIES
Foil strain gages are constructed by
embedding a foil measuring element into
a carrier.
Foil measuring grid Constantan foil 5 µm thick Constantan foil 6 µm thick
Carrier Polyimide Kapton
Substrate thickness 50 µm 15 µm
Cover thickness 25 µm 9 µm
Connection dimensions in (mm) [in] Solder pads or ribbon leads 27 AWG strand polyvinyl insulation
(30 long x.05 thick x 3 wide) (1 x 2) [.04 x .08]
[1.2 long x .002 thick x .012 wide]
Nominal resistance Stated in “to order” box 120 ±0.4 ohms
Resistance tolerance per package 0.5% 03%
Gage factor (µΩ/µ/µΩ) Approximately 2.0 2.10 ±10%
(actual value printed on each package)
Gage factor tolerance per package 1.0% 1.0%
Thermal Properties
Reference temperature 23°C/73°F 23°C/73°F
Service temperature:
Temperature characteristics:
Static measurements -30 to 250°C (-22 to 482°F) -20 to 100°C (-4 to 212°F)
Dynamic measurements -30 to 300°C (-22 to 572°F) -20 to 100°C (-4 to 212°F)
Steel 11 ppm°C (6.1 ppm°F) 10.8 ppm°C (6 ppm°F)
Aluminum 23 ppm°C (12.8 ppm°F) —
Uncompensated ±20 ppm°C (±11.1 ppm°F) —
Temperature compensated range -5 to 120°C (5 to 248°F) 10 to 80°C (50 to 176°F)
Tolerance of temp. compensation 1 ppm°C (0.5 ppm°F) 1 ppm°C (0.5 ppm°F)
Mechanical Properties
Maximum strain 3% or 30,000 µe 5% or 50,000 µe
Hysteresis Negligible Negligible
Fatigue (at ±1500 µe) > 10,000,000 cycles > 10,000,000 cycles
Smallest bending radius 3 mm (1⁄8 inch) 3 mm (1⁄8 inch)
Transverse sensitivity — Stated on each package
E-7
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EPG05
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