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Rebar Strainmeters VW Model 4911 4911A

Rebar Strainmeters VW Model 4911 4911A

The Model 4911 Rebar Strainmeter is designed for measuring strains in foundations, slurry walls, precast pil

Description

The Model 4911 Rebar Strainmeter is designed for measuring strains in foundations, slurry walls, precast piles, caissons, bridge abutments, tunnel liners, etc. The standard Model 4911 (#4 rebar), known as the “Sister Bar,” is installed alongside structural rebar. Larger models (4911A) are available for welding directly into structural rebar. Where short-term dynamic measurements are to be made, bonded resistance (Model 3911/3911A) strain gages can be substituted, or added.

Spesification

Standard Range
3000 µε
Resolution
0.4 µε
Accuracy¹
±0.25% F.S.
Nonlinearity
<0.5% F.S.
Temperature Range²
−20°C to +80°C
Rebar Sizes
4911 | #4 (Sister Bar) 
4911A | #6, 7, 8, 9, 10, 11, 12
Active Gage Length
4911 | 914 mm 
4911A | 1105 mm