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Instrumented Rockbolts VW Model 4910

Instrumented Rockbolts VW Model 4910

The Model 4910 Instrumented Rockbolt comprises a vibrating wire strain gage located inside a short length of standard

Description

The Model 4910 Instrumented Rockbolt comprises a vibrating wire strain gage located inside a short length of standard threaded rockbolt or rebar. This short length is then connected via a coupling to a longer length of the same bolt material. The instrumented rockbolt is installed in the same manner as conventional rockbolts, making sure that the strain gage remains located within the loaded part of the rockbolt.

Spesification

Standard Range
2500 µε, equivalent to around 27,215 kg in a 25 mm Ø bolt
Resolution 0.5 µε, equivalent to around 5 kg in a 25 mm Ø bolt
Accuracy ±0.25% F.S.
Linearity
±0.5% F.S.
Output
1400-3000 Hz
Temperature Range
−20 to +80°C
Bolt Sizes
25 mm, #8 rebar, and larger
 
Length 300 mm (standard)