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계측센서/스트레인게이지

TML 스트레인게이지, 볼트게이지 BTM/BTMC

by blackswan1 2025. 9. 19.

 

BTM시리즈볼트용변형게이지


볼트용 변형 게이지 BTM 시리즈는 볼트의 축부에 변형 게이지가 접착되지 않는 경우에 볼트의 중심부에 구멍을 뚫어 A-2 접착제로 매립함으로써 볼트의 축 변형을 측정할 수 있습니다.
BTM(볼트용 변형 게이지)을 삽입하여 하중 교정을 하면 정확한 볼트의 체결축력이 요구됩니다.

 

 

 

Applicable specimen Bolt M10 or larger
Operational temperature -10 to +80℃
Temperature compensation range -
Applicable adhesive A-2
Backing Special plastics
Element Cu-Ni
Strain limit -
Fatigue life at room temperature -

 

 

Type Gauge length (mm) Gauge width (mm) Backing length (mm) Backing width (mm) Resistance (Ω)
BTM-1C 1 0.7 5.6 1.4 120
(Φ1.6mm)
BTM-6C 6 1 12 1.7
(Φ2mm)
BTM-6CTA 6 1 12 1.7
Temperature-integrated(-10 to +80℃)
(Φ2mm)

 

The way of adhering a BTM (bolt strain gauge) differs from a general strain gauge, requiring drilling of the bolt, embedding the strain gauge, and load calibration.
Ex.) Load calibration specifics (bolt size: M10 × 1.25, L = 65)
Load 0 4.6 9.2 13.8 18.4 23 Nonlinearity Calibration coefficient
(kN) (%RO) (kN/1×10-6)
Indicated strain 0 378 747 1129 1518 1916 1.1 0.012
(×10-6)

 

 

Type Gauge Gauge Backing Resistance Applicable
length center diameter (Ω) hole diameter
(mm) a (mm) b (mm)   (mm)
BTMC-05-D10-003LE 0.5 5 Φ0.9 120 Φ1.0
BTMC-1-D16-003LE 1 5 Φ1.5 120 Φ1.6
BTMC-3-D20-003LE 3 10 Φ1.9 120 Φ2.0

 

 

 

BTM.pdf
0.79MB