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.
Products table
All display
BF-10CT Nominal Diameter (Deformed Bar): D10
Specifications
Performance
Stress Measurement
Rated Capacity
300 MPa (1 MPa = 1 N/mm2)
Nonlinearity
Within ±1% RO
Hysteresis
Within ±1.5% RO
Rated Output
1.85 mV/V or more
Temperature Measurement
Rated Capacity
-30 to 70ºC
Measurement Error
±0.5ºC (-30 to 70ºC)
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 ±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%
Nominal Diameter (Deformed Bar)
D10
Weight
Approx. 900 g
Other
Applicable Reinforcing Bar
SD345 (Formerly, SD35)
Dimensions
BF-13CT Nominal Diameter (Deformed Bar): D13
Specifications
Performance
Stress Measurement
Rated Capacity
300 MPa (1 MPa = 1 N/mm2)
Nonlinearity
Within ±1% RO
Hysteresis
Within ±1.5% RO
Rated Output
1.85 mV/V or more
Temperature Measurement
Rated Capacity
-30 to 70ºC
Measurement Error
±0.5ºC (-30 to 70ºC)
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 ±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%
Nominal Diameter (Deformed Bar)
D13
Weight
Approx. 1.3 kg
Other
Applicable Reinforcing Bar
SD345 (Formerly, SD35)
Dimensions
BF-16CT Nominal Diameter (Deformed Bar): D16
Specifications
Performance
Stress Measurement
Rated Capacity
300 MPa (1 MPa = 1 N/mm2)
Nonlinearity
Within ±1% RO
Hysteresis
Within ±1.5% RO
Rated Output
1.85 mV/V or more
Temperature Measurement
Rated Capacity
-30 to 70ºC
Measurement Error
±0.5ºC (-30 to 70ºC)
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 ±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%
Nominal Diameter (Deformed Bar)
D16
Weight
Approx. 1.8 kg
Other
Applicable Reinforcing Bar
SD345 (Formerly, SD35)
Dimensions
BF-19CT Nominal Diameter (Deformed Bar): D19
Specifications
Performance
Stress Measurement
Rated Capacity
300 MPa (1 MPa = 1 N/mm2)
Nonlinearity
Within ±1% RO
Hysteresis
Within ±1.5% RO
Rated Output
1.85 mV/V or more
Temperature Measurement
Rated Capacity
-30 to 70ºC
Measurement Error
±0.5ºC (-30 to 70ºC)
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 ±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%
Nominal Diameter (Deformed Bar)
D19
Weight
Approx. 2.5 kg
Other
Applicable Reinforcing Bar
SD345 (Formerly, SD35)
Dimensions
BF-22CT Nominal Diameter (Deformed Bar): D22
Specifications
Performance
Stress Measurement
Rated Capacity
300 MPa (1 MPa = 1 N/mm2)
Nonlinearity
Within ±1% RO
Hysteresis
Within ±1.5% RO
Rated Output
1.85 mV/V or more
Temperature Measurement
Rated Capacity
-30 to 70ºC
Measurement Error
±0.5ºC (-30 to 70ºC)
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 ±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%
Nominal Diameter (Deformed Bar)
D22
Weight
Approx. 3.2 kg
Other
Applicable Reinforcing Bar
SD345 (Formerly, SD35)
Dimensions
BF-25CT Nominal Diameter (Deformed Bar): D25
Specifications
Performance
Stress Measurement
Rated Capacity
300 MPa (1 MPa = 1 N/mm2)
Nonlinearity
Within ±1% RO
Hysteresis
Within ±1.5% RO
Rated Output
1.85 mV/V or more
Temperature Measurement
Rated Capacity
-30 to 70ºC
Measurement Error
±0.5ºC (-30 to 70ºC)
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 ±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%
Nominal Diameter (Deformed Bar)
D25
Weight
Approx. 4.3 kg
Other
Applicable Reinforcing Bar
SD345 (Formerly, SD35)
Dimensions
BF-29CT Nominal Diameter (Deformed Bar): D29
Specifications
Performance
Stress Measurement
Rated Capacity
300 MPa (1 MPa = 1 N/mm2)
Nonlinearity
Within ±1% RO
Hysteresis
Within ±1.5% RO
Rated Output
1.85 mV/V or more
Temperature Measurement
Rated Capacity
-30 to 70ºC
Measurement Error
±0.5ºC (-30 to 70ºC)
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 ±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%
Nominal Diameter (Deformed Bar)
D29
Weight
Approx. 5.3 kg
Other
Applicable Reinforcing Bar
SD345 (Formerly, SD35)
Dimensions
BF-32CT Nominal Diameter (Deformed Bar): D32
Specifications
Performance
Stress Measurement
Rated Capacity
300 MPa (1 MPa = 1 N/mm2)
Nonlinearity
Within ±1% RO
Hysteresis
Within ±1.5% RO
Rated Output
1.85 mV/V or more
Temperature Measurement
Rated Capacity
-30 to 70ºC
Measurement Error
±0.5ºC (-30 to 70ºC)
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 ±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
