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The VWS-4000 series vibrating wire Sister Bars and Rebar Strain Meters are designed to be embedded in concrete to measure strains due to imposed loads.
Thermistor: 3k 0hms at 25°C
Over range: +20%
Resolution: 0.4με
Accuracy: ±0.25%FS
Effective Gauge Length: 50mm (nominal)
De-bonded Length: 175mm
Overall Length: 915mm
Standard Diameter: 12, 16mm
Technical specifications for the VWS-4000 range of Sister Bar and Rebar Strain Meters.
Operation Manual for the VWS-4000 range of Sister Bar and Rebar Strain Meters.
SISTER BAR: The VWS-4000 Sister Bar is installed by tying it alongside an existing length of rebar within the cage. Available in two diameters: 12 and 16mm.
REBAR STRAIN METER: The VWS-4001 Rebar Strain Meter is installed by welding it into the existing rebar cage at a location within the structure where loads can be accurately passed from the concrete into the gauge. Available in various diameters to match the size of the rebar cage into which it is to be welded.
