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This pre-wired strain gauge has a 120 Ω grid measuring 0.236 x 0.079" (6 x 2 mm) on a polyimide carrier. It operates over 14 to 311°F (-10 to 155°C) with 3.3' (1 m) leads, 2 conductors. It suits static strain measurement and stress measurement on steel structures.
This pre-wired strain gauge has a 120 Ω grid measuring 0.236 x 0.079" (6 x 2 mm) on a polyimide carrier. It operates over 14 to 311°F (-10 to 155°C) with 3.3' (1 m) leads, 2 conductors. It suits static strain measurement and stress measurement on steel structures.
Linear pattern precision gauges with miniature and medium length grids are for general purpose and stress analysis applications. Available with either two 1-meter leads or three 3-meter leads and 120 or 350 Ω resistance. All models are compensated for steel.
Features
Applications
| Series | KFH Series |
| Type | pre-wired strain gauge |
| Gauge resistance | 120 Ω |
| Grid size | 0.236 x 0.079" (6 x 2 mm) |
| Temperature range | 14 to 311°F (-10 to 155°C) |
| Leads | 3.3' (1 m) leads, 2 conductors |
| Strain Gauge Construction | Foil strain gauge with embedded measuring grid |
| Measuring Grid Material | Constantan |
| Measuring Grid Thickness | 3.8 or 5 μm (150 or 197 microinch), depending upon strain gauge type |
| Carrier Material | Polyimide |
| Carrier Thickness | 45 ± 10 μm (1.772 ± 394 microinch) |
| Connections | PTFE wire, Ø 0.051 mm2, approximately 1.97" (50 mm) long, connected to AWG 28 ribbon cables (PVC insulated) through solder sleeves in 2- or 3-wire configurations |
| Nominal Resistance | 120 or 350 Ω depending upon gauge |
| Resistance Tolerance | ±0.35% |
| Gauge Factor | approximately 2 (stated on package) |
| Gauge Factor Tolerance | ±1% |
| Temperature Coefficient of Gauge Factor | (115 ± 10) x 10-6 1/K [(64 ± 5.5) x 10-6 1/°F] |
| Reference Temperature | 73°F (23°C) |
| Operating Temperature Range for Static Measurement | 14 to 311°F (-10 to 155°C) |
| Operating Temperature Range for Dynamic Measurement | 14 to 311°F (-10 to 155°C) |
| Fatigue Life | Achievable number of load cycles at alternating strain of ±1000 μm/m with zero point variation ≤ 300 μm/m: >1 x 107 (test was stopped) |
| Strain Gage Construction | Foil strain gauge with embedded measuring grid |
| Gage Factor | approximately 2 (stated on package) |
| Gage Factor Tolerance | ±1%; with 0.02" (0.6 mm) and 0.06" (1.5 mm) grid length ±1.5% |
| Temperature Coefficient of Gage Factor | (115 ± 10) x 10-6 1/K [(64 ± 5.5) x 10-6 1/°F] |
| Nominal Value of Gage Factor Temperature Coefficient | Specified on each package |
| Operating Temperature Range (static measurement, zero point related), PTFE cable | 14 to 311°F (-10 to 155°C) |
| Operating Temperature Range (dynamic measurement, not zero point related), PTFE cable | 14 to 311°F (-10 to 155°C) |
| Transverse Sensitivity (linear 3 mm 120 Ω gage) | ±0.2% |
| Temperature Response | Specified on each package (matched to coefficient of thermal expansion; adapted via LY41, LY42, LY43 table) |
| Coefficient of Thermal Expansion α for aluminum | 23 x 10-6 1/K (12.8 x 10-6 1/°F) |
| Coefficient of Thermal Expansion α for plastic material | 65 x 10-6 1/K (36.1 x 10-6 1/°F) |
| Coefficient of Thermal Expansion α for austenitic steel | 16 x 10-6 1/K (8.9 x 10-6 1/°F) |
| Coefficient of Thermal Expansion α for titanium | 9 x 10-6 1/K (5.0 x 10-6 1/°F) |
| Coefficient of Thermal Expansion α for molybdenum | 5.4 x 10-6 1/K (3.0 x 10-6 1/°F) |
| Coefficient of Thermal Expansion α for quartz | 0.05 x 10-6 1/K (0.3 x 10-6 1/°F) |
| Tolerance of Temperature Response | 14 to 248°F (-10 to 120°C) |
| Mechanical Hysteresis (reference temp, strain 1000 µm/m, linear 3 mm 120 Ω gage, adhesive SG496) | 1 μm/m at 1st load cycle; 0.5 μm/m at 3rd load cycle |
| Maximum Elongation (reference temp, linear 3 mm 120 Ω gage), positive direction | 20,000 ± 12% μm/m |
| Maximum Elongation (reference temp, linear 3 mm 120 Ω gage), negative direction | 25,000 ± 2.5% μm/m |
| Fatigue Life (linear 3 mm 120 Ω gage, alternating strain ±1000 µm/m), zero point variation ≤ 300 µm/m | > 1 x 107 (test was stopped) |
| Fatigue Life, zero point variation ≤ 30 µm/m | 5 x 106 |
| Minimum Radius of Curvature (longitudinal & transverse, reference temp) within measuring grid area | 0.012" (0.3 mm) |
| Minimum Radius of Curvature within solder tab area | 0.394" (10 mm) |
| Applicable Bonding Materials | Cold Cure Adhesives SG496, SG401; Heat Cure Adhesives TT300 |
| Grid Length Range | 0.02 to 0.79" (0.6 to 20 mm) |
| Termination | Two 3.28' (1 m) leads or three 9.84' (3 m) leads; 2- or 3-wire models |
| Temperature Compensation | ST (compensated for steel) |
| Maximum Permitted Bridge Energizing Voltage | Per model, 1.5 to 20 Vrms (e.g. 0.01" (0.3 mm) grid 120 Ω = 1.5 Vrms; 0.24" (6 mm) grid 350 Ω = 15 Vrms; XY/rosette patterns vary) |
Click on a category to view a selection of compatible accessories with the Omega KFH Series Pre-Wired Strain Gauge, 120 Ω, 0.236 x 0.079" grid, 3.3' leads, 2 conductors, 5-pack.
| Series | KFH Series |
| Type | pre-wired strain gauge |
| Gauge resistance | 120 Ω |
| Grid size | 0.236 x 0.079" (6 x 2 mm) |
| Temperature range | 14 to 311°F (-10 to 155°C) |
| Leads | 3.3' (1 m) leads, 2 conductors |
| Strain Gauge Construction | Foil strain gauge with embedded measuring grid |
| Measuring Grid Material | Constantan |
| Measuring Grid Thickness | 3.8 or 5 μm (150 or 197 microinch), depending upon strain gauge type |
| Carrier Material | Polyimide |
| Carrier Thickness | 45 ± 10 μm (1.772 ± 394 microinch) |
| Connections | PTFE wire, Ø 0.051 mm2, approximately 1.97" (50 mm) long, connected to AWG 28 ribbon cables (PVC insulated) through solder sleeves in 2- or 3-wire configurations |
| Nominal Resistance | 120 or 350 Ω depending upon gauge |
| Resistance Tolerance | ±0.35% |
| Gauge Factor | approximately 2 (stated on package) |
| Gauge Factor Tolerance | ±1% |
| Temperature Coefficient of Gauge Factor | (115 ± 10) x 10-6 1/K [(64 ± 5.5) x 10-6 1/°F] |
| Reference Temperature | 73°F (23°C) |
| Operating Temperature Range for Static Measurement | 14 to 311°F (-10 to 155°C) |
| Operating Temperature Range for Dynamic Measurement | 14 to 311°F (-10 to 155°C) |
| Fatigue Life | Achievable number of load cycles at alternating strain of ±1000 μm/m with zero point variation ≤ 300 μm/m: >1 x 107 (test was stopped) |
| Strain Gage Construction | Foil strain gauge with embedded measuring grid |
| Gage Factor | approximately 2 (stated on package) |
| Gage Factor Tolerance | ±1%; with 0.02" (0.6 mm) and 0.06" (1.5 mm) grid length ±1.5% |
| Temperature Coefficient of Gage Factor | (115 ± 10) x 10-6 1/K [(64 ± 5.5) x 10-6 1/°F] |
| Nominal Value of Gage Factor Temperature Coefficient | Specified on each package |
| Operating Temperature Range (static measurement, zero point related), PTFE cable | 14 to 311°F (-10 to 155°C) |
| Operating Temperature Range (dynamic measurement, not zero point related), PTFE cable | 14 to 311°F (-10 to 155°C) |
| Transverse Sensitivity (linear 3 mm 120 Ω gage) | ±0.2% |
| Temperature Response | Specified on each package (matched to coefficient of thermal expansion; adapted via LY41, LY42, LY43 table) |
| Coefficient of Thermal Expansion α for aluminum | 23 x 10-6 1/K (12.8 x 10-6 1/°F) |
| Coefficient of Thermal Expansion α for plastic material | 65 x 10-6 1/K (36.1 x 10-6 1/°F) |
| Coefficient of Thermal Expansion α for austenitic steel | 16 x 10-6 1/K (8.9 x 10-6 1/°F) |
| Coefficient of Thermal Expansion α for titanium | 9 x 10-6 1/K (5.0 x 10-6 1/°F) |
| Coefficient of Thermal Expansion α for molybdenum | 5.4 x 10-6 1/K (3.0 x 10-6 1/°F) |
| Coefficient of Thermal Expansion α for quartz | 0.05 x 10-6 1/K (0.3 x 10-6 1/°F) |
| Tolerance of Temperature Response | 14 to 248°F (-10 to 120°C) |
| Mechanical Hysteresis (reference temp, strain 1000 µm/m, linear 3 mm 120 Ω gage, adhesive SG496) | 1 μm/m at 1st load cycle; 0.5 μm/m at 3rd load cycle |
| Maximum Elongation (reference temp, linear 3 mm 120 Ω gage), positive direction | 20,000 ± 12% μm/m |
| Maximum Elongation (reference temp, linear 3 mm 120 Ω gage), negative direction | 25,000 ± 2.5% μm/m |
| Fatigue Life (linear 3 mm 120 Ω gage, alternating strain ±1000 µm/m), zero point variation ≤ 300 µm/m | > 1 x 107 (test was stopped) |
| Fatigue Life, zero point variation ≤ 30 µm/m | 5 x 106 |
| Minimum Radius of Curvature (longitudinal & transverse, reference temp) within measuring grid area | 0.012" (0.3 mm) |
| Minimum Radius of Curvature within solder tab area | 0.394" (10 mm) |
| Applicable Bonding Materials | Cold Cure Adhesives SG496, SG401; Heat Cure Adhesives TT300 |
| Grid Length Range | 0.02 to 0.79" (0.6 to 20 mm) |
| Termination | Two 3.28' (1 m) leads or three 9.84' (3 m) leads; 2- or 3-wire models |
| Temperature Compensation | ST (compensated for steel) |
| Maximum Permitted Bridge Energizing Voltage | Per model, 1.5 to 20 Vrms (e.g. 0.01" (0.3 mm) grid 120 Ω = 1.5 Vrms; 0.24" (6 mm) grid 350 Ω = 15 Vrms; XY/rosette patterns vary) |
Click on a category to view a selection of compatible accessories with the Omega KFH Series Pre-Wired Strain Gauge, 120 Ω, 0.236 x 0.079" grid, 3.3' leads, 2 conductors, 5-pack.
