Select Gage series F series (General purpose foil gages) UF series (General purpose foil, higher temperature) PF series (General purpose, longer gage lengths) P series (General purpose, long gage length) WF series (Waterproofed and integral leadwires) FLA-T series (Combined strain & temperature measurement) FLM/WFLM series (Metal backed/waterproof for concrete surface) MF series (Non-inductance gages) PMF series (Concrete embedment) KM series (Concrete embedment, early/long term measurement) YEF/YF series (High elongation, post yield)) LF series (Wood, sheetrock, low Modulus materials) L series (Wood, sheetrock, low Modulus materials) GF series (Plastics) BF series (Composites) CF series (Low temperature to -196 °C QF series (High temperature to +200 °C) ZF series (High temperature to +300 °C) SF series (Special purpose chevron pattern) AW series (Weldable, waterproof, high temperature to 600 °C) BTM (Special purpose bolt gage) FTP series (Special mechanical/waterproof protection) DD series (Special purpose one sided gage) FAC (Crack propagation measurement) TF series (Temperature measurement)

FAC Series
Crack Detection

This gage is designed to measure progress (length) of a crack and its rate of its growth in a pre-determined location on a test specimen for which metal fatigue monitoring is required. A special adaptor (CGA-120A) is required between the FAC-20 gage and the strainmeter.

Main Test Materials	Metal	Materials Backing	Epoxy
Operating Temperature	-20 to +80°C	Materials Element	Cu-Ni alloy foil
Compensation range	-	Strain limit	-
Bonding adhesive	CN,RP-2	Fatigue life at room temp.	-

Type	Measuring range (mm)	Backing size (mm)		Resistance (Ω)	Grid interval (mm)	Number of grid
FAC-20	20	43×25		1	0.5	41