Made in Japan
Manufacturer: Kyowa Electronic Instruments Co., Ltd.
Model: BR-20KBT
Enables measure concrete stress directly as stress and not via strain.
A temperature measuring function enable them to measure stress and temperature simultaneously.
Features
●Theoretically backed performance of direct concrete stress measurement with no conversion from a detected strain quantity.
●Receive minimal effects of creep and changing elastic modulus of concrete. and there by ensure accurate stress measurement.
●Also usable for stress measurement of the natural ground by installing at the rear of a tunnel lining.
Specifications
Performance
Stress Measurement
Temperature Measurement
Rated Capacity |
-30 to 70ºC |
Stress Measurement
Nonlinearity |
Within ±1% RO |
Hysteresis |
Within ±0.5% RO |
Rated Output |
1 mV/V or more |
Temperature Measurement
Measurement Error |
±0.5ºC (-30 to 70ºC)
(When measuring temperatures by using Kyowa’s civil engineering transducers with a thermal sensor.) |
Environmental Characteristics
Safe Temperature |
-30 to 80ºC |
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 |
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, 8 mm diameter by 1 m long, bared at the tip |
Mechanical Properties
Safe Overloads |
150% |
Weight |
Approx. 2.9 kg (Excluding cable) |