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Rebar Strainmeters (Electrical Resistance) | Model 3911 · 3911A

Category

Spesifikasi Teknis / Technical Specifications

Parameter 3911 3911A
Rentang Standar
Standard Range
3000 µε 3000 µε
Sensitivitas
Sensitivity
0.025% F.S. 0.025% F.S.
Akurasi¹
Accuracy¹
±0.25% F.S. ±0.25% F.S.
Linearitas
Linearity
0.25% F.S. 0.25% F.S.
Resistansi Jembatan
Bridge Resistance
350 Ω 350 Ω
Rentang Suhu²
Temperature Range²
−20°C hingga +80°C −20°C hingga +80°C
Ukuran Tulangan
Rebar Sizes
#4 (Sister Bar) #5, 6, 7, 8, 9, 10, 11, 14
Panjang
Length
914 mm 1105 mm

Rebar Strainmeters (Electrical Resistance) | Model 3911 · 3911A

Ciri-ciri dan Kegunaan

Characteristics and Applications
Model 3911 Electrical Resistance Type Rebar Strainmeters dirancang terutama untuk memonitor tegangan pada baja tulangan dalam struktur beton, seperti jembatan, tiang pancang beton, dan dinding diafragma. Alat ini sangat cocok digunakan di mana pengukuran regangan dinamis diperlukan selain regangan statis, atau di mana sistem pembacaan atau datalog yang ada tidak mampu membaca sensor kawat yang bergetar. Model 3911, atau “Sister Bar,” dirancang untuk diikat dengan kawat secara paralel dengan tulangan struktural. Diameter batang yang kecil meminimalkan pengaruhnya terhadap modulus penampang beton. Model yang lebih besar (3911A) tersedia untuk pengelasan langsung ke tulangan struktural.

Model 3911 Electrical Resistance Type Rebar Strainmeters are designed primarily for monitoring the stresses in reinforcing steel in concrete structures, such as bridges, concrete piles and diaphragm walls. They are particularly suitable where dynamic strain measurements are required in addition to static strains, or where existing readout systems or dataloggers are not capable of reading vibrating wire sen­sors. The Model 3911, or “Sister Bar,” is designed to be wire tied in parallel with the structural rebar. The small diameter of the bar minimizes its effect on the sectional modulus of the concrete. Larger models (3911A) are available for welding directly into structural rebar.

Description

Spesifikasi Teknis / Technical Specifications

Parameter 3911 3911A
Rentang Standar
Standard Range
3000 µε 3000 µε
Sensitivitas
Sensitivity
0.025% F.S. 0.025% F.S.
Akurasi¹
Accuracy¹
±0.25% F.S. ±0.25% F.S.
Linearitas
Linearity
0.25% F.S. 0.25% F.S.
Resistansi Jembatan
Bridge Resistance
350 Ω 350 Ω
Rentang Suhu²
Temperature Range²
−20°C hingga +80°C −20°C hingga +80°C
Ukuran Tulangan
Rebar Sizes
#4 (Sister Bar) #5, 6, 7, 8, 9, 10, 11, 14
Panjang
Length
914 mm 1105 mm

Rebar Strainmeters (Electrical Resistance) | Model 3911 · 3911A

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