Japan, Kyowa Electronic Instruments Co., Ltd.
Kyowa BF-CT Series Reinforcing-bar Stress Transducer
Made in Japan
Manufacturer: Kyowa Electronic Instruments Co., Ltd.
Model: BF-CT Series
BF-22CT For stress measurement of reinforcing bar
The BF-CT series stress transducers are designed for stress measurement by welding both ends to a reinforcing bar in the field. They are available in various models for selection according to diameters of the reinforcing bars. Each model provides a temperature measuring function to enable simultaneous measurement of stress and temperature.
Features
- For long-term stable measurement, the transducer proper features a special structure with inert gas filled in.
- The self-temperature-compensated strain gage used for the transducer enables measurement of the temperature stress of the reinforcing bar.
Specifications
Performance
Rated Capacity | 300 MPa (1 MPa = 1 N/mm2) |
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Nonlinearity | Within ±1% RO |
Hysteresis | Within ±1.5% RO |
Rated Output | 1.85 mV/V or more |
Temperature Measurement
Rated Capacity | -30 to 70ºC |
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Measurement Error | ±0.5ºC (-30 to 70ºC) |
Environmental Characteristics
Safe Temperature | -30 to 80ºC |
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Compensated Temperature | -20 to 70ºC |
Temperature Effect on Zero | Within ±0.05% RO/ºC |
Temperature Effect on Output | Within ±0.05%/ºC |
Electrical Characteristics
Safe Excitation | 10 V AC or DC |
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Recommended Excitation | 2 to 10 V AC or DC |
Input Resistance | 350 Ω ±2% at 0ºC |
Output Resistance | 450 Ω ±1.6% at 0ºC |
Cable | 4-conductor (0.5 mm2) chloroprene cable, 8 mm diameter by 1 m long, bared at the tip |
Mechanical Properties
Safe Overloads | 110% |
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Nominal Diameter (Deformed Bar) | D22 |
Weight | Approx. 3.2 kg |
Other
Applicable Reinforcing Bar | SD345 (Formerly, SD35) |
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