BPB-A
Pore Pressure Transducer

Summary

Embedded in a boring or together with a pile or steel sheet pile. These transducers measure pore water pressure Recommendable Excitation Voltage. Embedded in a boring or together with a pile or steel sheet pile, BPB-A/BPB-A-T series transducers measure pore water pressures or pore pressures. If desired, they can be used as pressure-based underground water level transducers by installing in a well. Recommendable Excitation Voltage. The BPB-A-T series is provided with temperature measuring function for simultaneous measurement of pore pressure and temperature. The cable length may be changed as specified.

Features

Small-sized design, 30 mm in outer diameter, enables installation in boring of small diameters. Flat filter (10μm mesh standard) is provided to prevent the sensing part from clogging. Stainless steel case (including flat filter FB-10SUS)

Products table

All display

BPB-A-200KP
200 kPa

Specifications

Performance
Pore Pressure Measurement
Rated Capacity 200 kPa
Nonlinearity Within ±2% RO
Hysteresis Within ±1% RO
Rated Output 0.75 mV/V or more
Environmental Characteristics
Safe Temperature -30 to 80ºC (Non-freezing)
Compensated Temperature 0 to 60ºC (Non-freezing)
Temperature Effect on Zero Within ±0.1% RO/ºC
Temperature Effect on Output Within ±0.1%/ºC
Electrical Characteristics
Safe Excitation 10 V AC or DC
Recommended Excitation 2 to 10 V AC or DC
Input Resistance 350 Ω ±1%
Output Resistance 350 Ω ±1%
Cable 4-conductor (0.5 mm2) chloroprene cable, 11.5 mm diameter by 1 m long, bared at the tip
Mechanical Properties
Safe Overloads 150%
Weight Approx. 320 g (Excluding cable)

Dimensions

BPB-A

BPB-A-500KP
500 kPa

Specifications

Performance
Pore Pressure Measurement
Rated Capacity 500 kPa
Nonlinearity Within ±1% RO
Hysteresis Within ±1% RO
Rated Output 1 mV/V or more
Environmental Characteristics
Safe Temperature -30 to 80ºC (Non-freezing)
Compensated Temperature 0 to 60ºC (Non-freezing)
Temperature Effect on Zero Within ±0.1% RO/ºC
Temperature Effect on Output Within ±0.1%/ºC
Electrical Characteristics
Safe Excitation 10 V AC or DC
Recommended Excitation 2 to 10 V AC or DC
Input Resistance 350 Ω ±1%
Output Resistance 350 Ω ±1%
Cable 4-conductor (0.5 mm2) chloroprene cable, 11.5 mm diameter by 1 m long, bared at the tip
Mechanical Properties
Safe Overloads 150%
Weight Approx. 320 g (Excluding cable)

Dimensions

BPB-A

BPB-A-1MP
1 MPa

Specifications

Performance
Pore Pressure Measurement
Rated Capacity 1 MPa
Nonlinearity Within ±1% RO
Hysteresis Within ±1% RO
Rated Output 1 mV/V or more
Environmental Characteristics
Safe Temperature -30 to 80ºC (Non-freezing)
Compensated Temperature 0 to 60ºC (Non-freezing)
Temperature Effect on Zero Within ±0.1% RO/ºC
Temperature Effect on Output Within ±0.1%/ºC
Electrical Characteristics
Safe Excitation 10 V AC or DC
Recommended Excitation 2 to 10 V AC or DC
Input Resistance 350 Ω ±1%
Output Resistance 350 Ω ±1%
Cable 4-conductor (0.5 mm2) chloroprene cable, 11.5 mm diameter by 1 m long, bared at the tip
Mechanical Properties
Safe Overloads 150%
Weight Approx. 320 g (Excluding cable)

Dimensions

BPB-A

BPB-A-2MP
2 MPa

Specifications

Performance
Pore Pressure Measurement
Rated Capacity 2 MPa
Nonlinearity Within ±1% RO
Hysteresis Within ±1% RO
Rated Output 1 mV/V or more
Environmental Characteristics
Safe Temperature -30 to 80ºC (Non-freezing)
Compensated Temperature 0 to 60ºC (Non-freezing)
Temperature Effect on Zero Within ±0.1% RO/ºC
Temperature Effect on Output Within ±0.1%/ºC
Electrical Characteristics
Safe Excitation 10 V AC or DC
Recommended Excitation 2 to 10 V AC or DC
Input Resistance 350 Ω ±1%
Output Resistance 350 Ω ±1%
Cable 4-conductor (0.5 mm2) chloroprene cable, 11.5 mm diameter by 1 m long, bared at the tip
Mechanical Properties
Safe Overloads 150%
Weight Approx. 320 g (Excluding cable)

Dimensions

BPB-A

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Remarks

*Double shielded cable can also be manufactured.

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