BR-BT
Stress Transducer

Summary

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.

Products table

All display

BR-20KBT
2 MPa

Specifications

Performance
Stress Measurement
Rated Capacity 2 MPa
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)

Dimensions

BR-BT

BR-50KBT
5 MPa

Specifications

Performance
Stress Measurement
Rated Capacity 5 MPa
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)

Dimensions

BR-BT

BR-100KBT
10 MPa

Specifications

Performance
Stress Measurement
Rated Capacity 10 MPa
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 120%
Weight Approx. 2.9 kg (Excluding cable)

Dimensions

BR-BT

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Remarks

* Models providing smaller rated capacities (200 kPa, 500 kPa, and 1 MPa) manufactured on option.

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