Omega Products SG-2-120-RY51 User Manual
ROSETTE STRAIN GAGES
To Order
TYPE SERIES PRICE GRID CARRIER
U 0°/45°/90° Encapsulated with
Ribbon Leads
RY51
Temperature characteristics
matched to carbon steel
RY53
Temperature characteristics
matched to aluminum
(Specify Model Number)
Diagrams Shown Larger
Than Actual Size
Fig. 1
DIMENSIONS [MM]
PER PKG MAX TERM
MODEL NO. OF 5 OHMS A B C D EXC PADS FIG
SG-2/120-RY51 $125 120 2.0 1.8 6.3 5.0 5 TP-1 1
SG-3/350-RY51 139 350 3.0 1.6 7.0 6.8 8 TP-2 2
SG-7/120-RY51 165 120 6.0 3.0 12.0 11.0 10 TP-3 3
SG-2/120-RY53 125 120 2.0 1.8 6.3 5.0 5 TP-1 1
SG-3/350-RY53 139 350 3.0 1.6 7.0 6.8 8 TP-2 2
SG-7/120-RY53 165 120 6.0 3.0 12.0 11.0 10 TP-3 3
Fig. 2 Fig. 3
For Accessory
Terminal Pads,
see page E-25.
To Order
TYPE SERIES PRICE GRID CARRIER
U 0°/45°/90° Encapsulated with
Solder Tabs
RY61
Temperature characteristics
matched to carbon steel
RY63
Temperature characteristics
matched to aluminum
Ordering Example:
SG-7/120-RY61, package of
five rosette strain gages
encapsulated with solder tabs,
with temperature characteristics
matched to carbon steel and
max. excitation of 9 V, $165.
(Specify Model Number)
DIMENSIONS [MM]
PER PKG MAX TERM
MODEL NO. OF 5 OHMS A B C D EXC PADS FIG
SG-2/120-RY61 $125 120 2.0 1.8 6.3 5.0 5 TP-1 1
SG-3/350-RY61 139 350 3.0 1.6 7.0 6.8 8 TP-2 2
SG-7/120-RY61 165 120 6.0 3.0 12.0 11.0 9 TP-3 3
SG-2/120-RY63 125 120 2.0 1.8 6.3 5.0 5 TP-1 1
SG-3/350-RY63 139 350 3.0 1.6 7.0 6.8 8 TP-2 2
SG-7/120-RY63 165 120 6.0 3.0 12.0 11.0 9 TP-3 3
Diagrams Shown Larger
Than Actual Size
Fig. 1 Fig. 2 Fig. 3
STRAIN GAGES
For Accessory
Terminal Pads,
see page E-25.
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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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