BKK-A
Surface-mounting Type Inclination Transducer

BKK-A

Summary

These transducers provide not only resolution twice as high as conventional systems but also outstandingly improved temperature characteristics and long-term stability.
The BKK-A series inclination transducers on surface of structure. available in two types, uniaxial and biaxial, are designed to measure minute inclination quantities. They are suitably used in combination with a structural settlement transducer for measurement of the disturbance resulting from nearby engineering works as well as for measurement of landslide-initiated inclination of the ground surface.
These transducers provide not only resolution twice as high as conventional systems but also outstandingly improved temperature characteristics (temperature effect on zero balance ±0.36 seconds/°C with ±1° rated capacity) and long-term stability (±0.5% RO). Furthermore, a stopper for detector protection is provided to ensure high handling efficiency in a total working flow from transportation to installation and measurement. Also, their structure, with highly viscous damping oil filled in, improves vibration resistance.

Features

●External stopper provided
●Improved vibration resistance
●Biaxial type available (BKK-A-D)

Products table

All display

BKK-A-1
1 direction, ±1º

Specifications

Performance
Rated Capacity ±1º
Nonlinearity Within ±0.5% RO
Hysteresis Within ±0.5% RO
Rated Output 2 mV/V or more
Environmental Characteristics
Safe Temperature -20 to 70ºC
Compensated Temperature -10 to 60ºC
Temperature Effect on Zero Within ±0.005% RO/ºC
Temperature Effect on Output Within ±0.02%/ºC
Long-term Stability Within ±0.5% RO (For 6 months)
This value is based on actual measurement and stated with dispersion taken into consideration. Stability slowly changes during a few months after installation, and then tends to become constant.
Electrical Characteristics
Safe Excitation 10 V AC or DC
Recommended Excitation 1 to 2 V AC or DC
Input Resistance 350 Ω ±1%
Output Resistance 350 Ω ±1%
Cable 4-conductor (0.3 mm2) chloroprene shielded cable, 7.6 mm diameter by 3 m long, bared at the tip
(Shield wire is not connected to the case.)
Mechanical Properties
Measuring Direction Uniaxial
Safe Overloads 120%
Material Chromate-plated
Degree of Protection IP56 (IEC 60529)
Weight Approx.6 kg
Standard Accessories Stopper fixing wing nut
Optional Accessories ●Wall-mounting Fixtures
Designed to mount BKK-A transducers onto a wall surface; chromate-plated.
BD-11A (For mounting 1 unit)
BD-12A (For mounting 2 units)
●Horizontal Surface-mounting Fixtures
Designed to mount BKK-A transducers onto a horizontal surface; chromate-plated.
BD-31A (For mounting 1 unit)
BD-32A (For mounting 2 units)
●Wall Protection Covers
Designed to protect BKK-A transducers against external mechanical force; metal covers painted in grey.
BD-21A (For BD-11A)
BD-22A (For BD-12A)
BD-41A (For BD-31A)
BD-42A (For BD-32A)

Dimensions

BKK-A

BKK-A-1-D
2 directions, ±1º

Specifications

Performance
Rated Capacity ±1º
Nonlinearity Within ±0.5% RO
Hysteresis Within ±0.5% RO
Rated Output 2 mV/V or more
Environmental Characteristics
Safe Temperature -20 to 70ºC
Compensated Temperature -10 to 60ºC
Temperature Effect on Zero Within ±0.005% RO/ºC
Temperature Effect on Output Within ±0.02%/ºC
Long-term Stability Within ±0.5% RO (For 6 months)
This value is based on actual measurement and stated with dispersion taken into consideration. Stability slowly changes during a few months after installation, and then tends to become constant.
Electrical Characteristics
Safe Excitation 10 V AC or DC
Recommended Excitation 1 to 2 V AC or DC
Input Resistance 350 Ω ±1%
Output Resistance 350 Ω ±1%
Cable 4-conductor (0.3 mm2) chloroprene shielded cable, 7.6 mm
diameter by 3 m long, bared at the tip (2 cables for biaxial models)
(Shield wire is not connected to the case.)
Mechanical Properties
Measuring Direction Biaxial
Safe Overloads 120%
Interference Within ±1% RO
Material Chromate-plated
Degree of Protection IP56 (IEC 60529)
Weight Approx.6.8 kg
Standard Accessories Stopper fixing wing nut
Optional Accessories ●Wall-mounting Fixtures
Designed to mount BKK-A transducers onto a wall surface; chromate-plated.
BD-11A (For mounting 1 unit)
BD-12A (For mounting 2 units)
●Horizontal Surface-mounting Fixtures
Designed to mount BKK-A transducers onto a horizontal surface; chromate-plated.
BD-31A (For mounting 1 unit)
BD-32A (For mounting 2 units)
●Wall Protection Covers
Designed to protect BKK-A transducers against external mechanical force;
metal covers painted in grey.
BD-21A (For BD-11A)
BD-22A (For BD-12A)
BD-41A (For BD-31A)
BD-42A (For BD-32A)

Dimensions

BKK-A

BKK-A-2
1 direction, ±2º

Specifications

Performance
Rated Capacity ±2º
Nonlinearity Within ±0.5% RO
Hysteresis Within ±0.5% RO
Rated Output 3 mV/V or more
Environmental Characteristics
Safe Temperature -20 to 70ºC
Compensated Temperature -10 to 60ºC
Temperature Effect on Zero Within ±0.005% RO/ºC
Temperature Effect on Output Within ±0.02%/ºC
Long-term Stability Within ±0.5% RO (For 6 months)
This value is based on actual measurement and stated with dispersion taken into consideration. Stability slowly changes during a few months after installation, and then tends to become constant.
Electrical Characteristics
Safe Excitation 10 V AC or DC
Recommended Excitation 1 to 2 V AC or DC
Input Resistance 350 Ω ±1%
Output Resistance 350 Ω ±1%
Cable 4-conductor (0.3 mm2) chloroprene shielded cable, 7.6 mm
diameter by 3 m long, bared at the tip
(Shield wire is not connected to the case.)
Mechanical Properties
Measuring Direction Uniaxial
Safe Overloads 120%
Material Chromate-plated
Degree of Protection IP56 (IEC 60529)
Weight Approx.5.5 kg
Standard Accessories Stopper fixing wing nut
Optional Accessories ●Wall-mounting Fixtures
Designed to mount BKK-A transducers onto a wall surface; chromate-plated.
BD-11A (For mounting 1 unit)
BD-12A (For mounting 2 units)
●Horizontal Surface-mounting Fixtures
Designed to mount BKK-A transducers onto a horizontal surface; chromate-plated.
BD-31A (For mounting 1 unit)
BD-32A (For mounting 2 units)
●Wall Protection Covers
Designed to protect BKK-A transducers against external mechanical force;
metal covers painted in grey.
BD-21A (For BD-11A)
BD-22A (For BD-12A)
BD-41A (For BD-31A)
BD-42A (For BD-32A)

Dimensions

BKK-A

BKK-A-2-D
2 directions, ±2º

Specifications

Performance
Rated Capacity ±2º
Nonlinearity Within ±0.5% RO
Hysteresis Within ±0.5% RO
Rated Output 3 mV/V or more
Environmental Characteristics
Safe Temperature -20 to 70ºC
Compensated Temperature -10 to 60ºC
Temperature Effect on Zero Within ±0.005% RO/ºC
Temperature Effect on Output Within ±0.02%/ºC
Long-term Stability Within ±0.5% RO (For 6 months)
This value is based on actual measurement and stated with dispersion taken into consideration. Stability slowly changes during a few months after installation, and then tends to become constant.
Electrical Characteristics
Safe Excitation 10 V AC or DC
Recommended Excitation 1 to 2 V AC or DC
Input Resistance 350 Ω ±1%
Output Resistance 350 Ω ±1%
Cable 4-conductor (0.3 mm2) chloroprene shielded cable, 7.6 mm
diameter by 3 m long, bared at the tip (2 cables for biaxial models)
(Shield wire is not connected to the case.)
Mechanical Properties
Measuring Direction Biaxial
Safe Overloads 120%
Interference Within ±1% RO
Material Chromate-plated
Degree of Protection IP56 (IEC 60529)
Weight Approx.6.3 kg
Standard Accessories Stopper fixing wing nut
Optional Accessories ●Wall-mounting Fixtures
Designed to mount BKK-A transducers onto a wall surface; chromate-plated.
BD-11A (For mounting 1 unit)
BD-12A (For mounting 2 units)
●Horizontal Surface-mounting Fixtures
Designed to mount BKK-A transducers onto a horizontal surface; chromate-plated.
BD-31A (For mounting 1 unit)
BD-32A (For mounting 2 units)
●Wall Protection Covers
Designed to protect BKK-A transducers against external mechanical force;
metal covers painted in grey.
BD-21A (For BD-11A)
BD-22A (For BD-12A)
BD-41A (For BD-31A)
BD-42A (For BD-32A)

Dimensions

BKK-A

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