BPB-A,BPB-A-T
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.
?? Small-sized design, 30 mm in outer diameter, enables installation in boring of small diameters.
?? Flat filter (10??m mesh standard) is provided to prevent the sensing part from clogging.
?? Stainless steel case (including flat filter FB-10SUS)
| Temperature Measuring Funcstion |
Rated Capacity |
| No |
Yes |
| BPB-A-200KP |
- |
200kPa |
| BPB-A-500KP |
BPB-A-500KP-T |
500kPa |
| BPB-A-1MP |
BPB-A-1MP-T |
1MPa |
| BPB-A-2MP |
- |
2MPa |
| Performance |
| Nonlinearity |
Within ??2% RO (BPB-A-200KP) |
| Within ??1% RO (BPB-A-500KP to 2MP) |
| Hysteresis |
Within ??1% RO |
| Rated Output |
0.75 mV/V (1500??m/m) or more (BPB-A-200KP) |
| 1 mV/V (2000??m/m) or more (BPB-A-500KP to 2MP) |
| Temperature Measurement (BPB-A-T) |
| Rated Capacity |
-30 to 70??C |
| Measurement Error |
??0.5??C (-30 to 70??C) |
| (Refer to Small-sized Temperature Transducer BTS-100AT) |
| Environmental Characteristics |
| Safe Temperature Range |
0 to 80??C (BPB-A) (non-freezing) |
| -30 to 80??C (BPB-A-T) (non-freezing) |
| Compensated Temperature Range |
0 to 60??C (non-freezing) |
| Temperature Effect on Zero Balance |
Within ??0.1% RO/??C |
| Temperature Effect on Output |
Within ??0.1%/??C |
| Electrical Characteristics |
| Recommendable Excitation Voltage |
2 to 10 V AC or DC |
| Input Resistance |
350???1% (BPB-A-T at 0??C) |
| Output Resistance |
350???1% |
| (450???0.8% at 0??C with BPB-A-T) |
| Cable |
4-conductor (0.5 mm 2 ) chloroprene shielded cable, |
| 11.5 mm diameter by 1 m long, bared at the tip |
| Mechanical Properties |
| Safe Overload Rating |
150% |
| Weight |
Approx.320g |
*Double shielded cable can also be manufactured.
BPF and FB Filters for Pore Pressure Transducers
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