FEATURES: • Standard Sizes 1/8”, 1/4”, grid lengths
• Ceramic cement application
• Tight resistance tolerances
• Unmatched grid alignment
HFK Series Free Filament Strain Gages are the result of 40 years of
high temperature strain gage experience. The fixturing and unique
capabilities that produce these gages are the result of engineering
programs developed by the most experienced staff in the world.
SPECIFICATIONS
Gage Grid: ...................... Karma Alloy, Heat Treated
Gage Carrier: .................. Fiberglas/Teflon with Silicone Adhesive
Leads: ............................. Chromel A-0.003" Dia.
Shelf Life: ........................ Carrier Adhesive 9 Months
Fatigue Life: .................... Nominal 2 x 106 cycles at ± 1500μ”/”

HFK-12-125-SCW  (1)
HFK-35-250-SCW   (2)
                  Gage Factor Nominal      Gage Factor                 Grid Length                 Grid Width Nominal       Resistance    ResistanceTolerance     Lead Length
  (1)         0.250 inch(6.35 mm)   0.125 inch(3.17 mm)     0.130 inch(3.30 mm)    0.060 inch(1.52 mm)      120 Ω               ± 2 Ω                         2 3/4”(70 mm)
  (2)           0.250 inch(6.35 mm)   0.125 inch(3.17 mm)     0.130 inch(3.30 mm)    0.060 inch(1.52 mm)    350 Ω               ± 4 Ω                         2 3/4”(70 mm)

　

APPLICATION ....All gage lengths can be applied with ceramic cement or supplied on weldable form.

Gage Grid: .......................Fe Cr Al Alloy (.001") .003mm diameter round wire
Leads: ..............................Fe Cr Al Alloy (.003") .008mm diameter round wire
with “Z” configuration flattened to (.0015") .004 mm
in grid area
Carrier: ............................Fiberglass reinforced Teflon tape carrier with silicone
adhesive (shelf life of grid carrier [Figure 2] is 9 months)
Resistance: ......................120.0 ohms ± 2.0 ohms at 20°C (68°F)
Gage Factor: ...................2.4 nominal at 20°C (68°F)
Gage Current: .................30 Milliamperes, max.
Temperature Range: ......Cryogenic to 850°C (1560°F)
Weldable Gage ONLY:
Shim Material: ................Hastelloy X
Bonding Matrix: .............Alumina
Shelf Life: ........................Unlimit

Density: ............................................................. 7.1 Mg/m3 (0.256 lb./in3)
Chemical Analysis, Approx.: ....................... 72 Fe 22.5 Cr 5.5 Al
Resistivity @ 20°C (68°F): ............................ 875, ohms - cmf
Max. Operating Temperature: ................... 1375°C (2500°F)
Melting Point, Approx.: ................................ 1510°C (2750°F)
Temperature Factor,
Resistant Max. Temp.: ................................... 1.044
Thermal Expansion, ppm/°F: ..................... 20 - 250°C = 6.1 (68 - 482°F)
20 - 500°C = 6.9 (68 - 932°F)
20 - 750°C = 7.7 (68 - 1382°F)
20 - 1000°C = 8.3 (68 - 1832°F)
Gage Factor K @ 20°C (68°F): .................... 2.3 to 2.6
Gage Factor vs. Temperature
Coefficient:................................ -5.73 x 10-4/°C
Tensile Strength, PSI: .................................... 140,000 (hard), 92,000 (soft)
Tensile Strength, MPa: .................................. 965 (hard), 690 (soft)
Elongation, % (Soft): ..................................... 22%
Magnetic: ......................................................... Yes, below 540°C (1000°F)
Thermoelectric Potential vs. Cu: ............... -2.6μV/°C (0-100°C)

FEATURES: • Miniature Sizes 1/8”, 1/16”, grid lengths
• Flame spray or ceramic cement application
• Tight resistance tolerances
• Unmatched grid alignment
HFN Series Free Filament Strain Gages are the result of 20 years of high
temperature strain gage experience. The fixturing and unique capabilities
that produce these gages are the result of engineering programs developed
by the most experienced staff in the world.

SPECIFICATIONS

Gage Grid: ...................... Niome V Alloy -.0007" Dia.
Gage Carrier: .................. Fiberglass/Teflon with Silicone Adhesive
Leads: ............................. Chromel A-0.003" Dia.
Shelf Life: ........................ Carrier Adhesive 9 Months
Fatigue Life: .................... Nominal 2 x 106 cycles at ± 750μ”/” at 1000°F on Hastelloy X
Maximum Gage Current: 30 Milliamp. at 500°C on Hastelloy X, 1mm thick

Gage Factor

Type Code：

HFN-12-063-SCW
HFN-12-125-SCW
HFN-35-125-SCW

高温箔式应变片 KH

高温箔式应变片 KFH

可焊接高温应变片

技术参数：

通用型号：

弯曲性优异,防水抗温度性强,若不直接接触水时,不需要进行表面涂层处理。

.所有型号都可以根据要求带有或不带有引线。

.性能：

 工作温度范围：-196～+120℃(当与CC-33A粘结时)、-196～+150℃（PC-6）

.敏感栅长度：0.2、0.3、1、2、3、4、5、6、10、20、30mm

.应变片类型：单轴、双轴、三轴、四轴、单轴5片、双轴5片

.导线的种类：聚酯铜线（2～100mm）、乙烯树脂被覆线（15cm～30m）、中温用导线（15cm～30m）

.胶水：氰基丙稀酸盐粘结剂CC-33A

.可用于特别应用特别型号:一般用途单轴、压力分析、扭矩测量、细线、受剪应变、集中力测量（单轴5片型）

.电阻：60、120、350、500、1000Ω

用于印刷电路板的：

采用仪器标准尺寸，能接装于机器上或狭小部位，超小型：单轴型1.2×1.1mm、双轴、三轴型2.5×2.5mm。.敏感栅长度：0.2、1mm。.类型：单轴型、三轴型0°/90°/45° .电阻:120、350Ω

用于复合材料的：

最适合用于塑料复合材料（CFRP、GFRP）的强度测试。.敏感栅长度：2、5mm。.类型：单轴型、三轴型0°/90°/45° .电阻:120、350Ω

      strain gage code:

Gage patern	Part No.	Gage length	base size	Patern size
	F-02W-12T11W03	0.2	2.7 x 2.2	1.3 x 1.0
	F-02W-12T11W3
	F-05W-12T11W03	0.5	3.0 x 2.5	1.3 x 1.4
	F-05W-12T11W3
	F-1S-12MT11W03	1.0	5.2 x 2.5	2.6 x 1.4
	F-1S-12MT11W1
	F-1S-12MT11W3
	F-1S-12MT11W5
	F-2-12T11W03	2.0	6.7 x 3.0	4.3 x 1.9
	F-2-12T11W1
	F-2-12T11W3
	F-2-12T11W5
	F-3N-12T11W03	3.0	9.0 x 3.5	6.0 x 1.8
	F-3N-12T11W1
	F-3N-12T11W3
	F-3N-12T11W5
	F-4-12T11W03	4.0	8.2 x 3.5	5.6 x 2.0

	FX-5-12T11W03	5.0	φ12.0	8.0 x 2.5
	FX-5-12T11W1
	FX-5-12T11W3
	FX-5-12T11W5
	FR-2-12T11W03	2.0	φ8.0	4.1 x 1.4
	FR-2-12T11W1
	FR-2-12T11W3
	FR-2-12T11W5
	FR-5-12T11W03	5.0	φ12.0	8.0 x 2.5
	FR-5-12T11W1
	FR-5-12T11W3
	FR-5-12T11W5