These transducers are intended for measurement of the strain occurring inside concrete with comparatively large aggregates. Strain transducers BS-25AT/BS-25BT are intended for measurement of the strain occurring inside concrete with comparatively large aggregates. Since a temperature measuring function is provided, these transducers can simultaneously measure strain and temperature.
Features
●The linear expansion coefficient is approximated to that of concrete to minimize temperature effects, thereby enabling measurement of external force-initiated strain and the strain corresponding to temperature stress. ●Minimal damage against vibrator during embedment and endures vibration by the RCD method. ●The rated capacity of BS-25AT is ±500μm/m, and BS-25BT is ±1000μm/m.
Products table
All display
BS-25AT ±500 ×10-6 strain
Specifications
Performance
Strain Measurement
Rated Capacity
±500 ×10-6 strain
Nonlinearity
Within ±1.5% RO
Hysteresis
Within ±2% RO
Rated Output
2.5 mV/V or more (From minus to plus rated output)
Temperature Measurement
Rated Capacity
-30 to 70ºC
Measurement Error
Within ±0.5°C (-30 to 70°C)
Environmental Characteristics
Safe Temperature
-30 to 80ºC
Compensated Temperature
-20 to 70ºC
Temperature Effect on Output
Within ±0.05%/ºC
Electrical Characteristics
Safe Excitation
10 V AC or DC
Recommended Excitation
2 to 10 V AC or DC
Input Resistance
350 Ω ±1% at 0ºC
Output Resistance
450 Ω ±0.8% at 0ºC
Cable
4-conductor (0.5 mm2) chloroprene cable, 11.5 mm diameter by 1 m long, bared at the tip
Mechanical Properties
Instrument Length
250 mm
Safe Overloads
120%
Apparent Linear Expansion Coefficient
(11.5 ±0.6)×10-6/ºC
Weight
Approx. 600 g
Dimensions
BS-25BT ±1000 ×10-6 strain
Specifications
Performance
Strain Measurement
Rated Capacity
1000 ×10-6 strain
Nonlinearity
Within ±2% RO
Hysteresis
Within ±2% RO
Rated Output
2.5 mV/V or more (From minus to plus rated output)
Temperature Measurement
Rated Capacity
-30 to 70ºC
Measurement Error
Within ±0.5°C (-30 to 70°C)
Environmental Characteristics
Safe Temperature
-30 to 80ºC
Compensated Temperature
-20 to 70ºC
Temperature Effect on Output
Within ±0.05%/ºC
Electrical Characteristics
Safe Excitation
10 V AC or DC
Recommended Excitation
2 to 10 V AC or DC
Input Resistance
350 Ω ±1% at 0ºC
Output Resistance
450 Ω ±0.8% at 0ºC
Cable
4-conductor (0.5 mm2) chloroprene cable, 11.5 mm diameter by 1 m long, bared at the tip
