Japan, Kyowa Electronic Instruments Co., Ltd.
Kyowa BS-25BT Strain Transducer
Made in Japan
Manufacturer: Kyowa Electronic Instruments Co., Ltd.
Model: BS-25BT
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.
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 |
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
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