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EPC Products Strain Gauge Bolt Strain Bolt strain gauge series BTM/BTMC
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Bolt strain gauge series BTM/BTMC

Model：BTM/BTMC

Use：These gauges are used for measurement of tensile strain of bolt.

Standard：

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These gauges are used for measurement of tensile strain of bolt. They are simply inserted into pre-drilled hole in the bolt with exclusive adhesives. This method is recommendable when an ordinary strain gauges can not be mounted on the bolt surface. Accurate tensile force measurement is possible by calibrating the bolt after installing the bolt gauges.


Applicable
specimen
Bolt M10 or larger
Backing
Special
plastics
Operational
temperature(°C)
-10 ~ +80°C
Element
Cu-Ni
Temperature
compensation range(°C)
—
Strain limit
0.5%
(5000×10-6 strain)
Applicable adhesive
A-2(BTM) 
CN(BTMC)
Fatigue life
at room temperature
—
 




series BTM



Single-element (G.F. 2.1 approx.)

BTM

BTM-1C/BTM-6C/BTM-6CTB

Type
Gauge
length
(mm)
Gauge
width
(mm)
Backing
length
(mm)
Backing
width
(mm)
Resistance
(Ω)
Applicable
hole diameter
(mm)
BTM-1C 1 0.7 5.6 1.4 120 ø1.6
BTM-6C 6 1.0 12.0 1.7 120 ø2.0
BTM-6CTA 6 1.0 12.0 1.7 120 ø2.0

Each package contains 10 gauges.



Single-element



(G.F. 2.1 approx.)

Type
Gauge
length
(mm)
Gauge
center
a (mm)
Backing
diameter
b (mm)
Resistance
(Ω)
Applicable
hole diameter
(mm)
BTMC-05-D10-003LE 0.5 5 ø0.9 120 ø1.0
BTMC-1-D16-003LE 1 5 ø1.5 120 ø1.6
BTMC-3-D20-003LE 3 10 ø1.9 120 ø2.0

Each package contains 10 gauges.series BTMC


TML,Tokyo Measuring Instruments Laboratory

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