BEE-A,BEF-A
A pressure-sensing surface 160mm in diameter,used most popularly in measuring fields.
The BEE-A and BEF-A series are soil pressure transducers with an outer diameter of 200 mm which are used most popularly in measuring fields. The BEE-A series for underground soil pressure measurement is embedded in a core zone of a rockfill dam or ordinary banking. The BEE-A series can also measure soil pressure of 3 or 4 face objects. The BEF-A series can be used for soil pressure measurement of a continuous underground earth retaining wall.
?? Applied pressure causes minimal diaphragm displacement thanks to a dual diaphragm design.
?? Highly accurate displacement ratio of the pressure-sensing surface to its diameter is less than 1/100000.
?? Can measure dynamic soil pressure caused by earthquake, etc.
Model |
Rated Capacity |
Use |
BEE-A-200KP |
200kPa |
Underground soil pressure measurement |
BEE-A-500KP |
500kPa |
BEE-A-1MP |
1Mpa |
BEE-A-2MP |
2Mpa |
BEF-A-200KP |
200kPa |
Wall surface soil pressure measurement |
BEF-A-500KP |
500kPa |
BEF-A-1MP |
1Mpa |
BEF-A-2MP |
2Mpa |
Nonlinearity |
Within ??1% RO (BEE/BEF-500KP to 2MP) |
Within ??3% RO (BEE/BEF-A-200KP) |
Hysteresis |
Within ??1% RO |
Rated Output |
1 mV/V (2000??m/m) or more(BEE/BEF-500KP to 2MP) |
0.9 mV/V (1800??m/m) or more (BEE/BEF-A-200KP) |
Environmental Characteristics |
Safe Temperature Range |
-20 to 80??C |
Compensated Temperature Range |
-15 to 70??C |
Temperature Effect on Zero Balance |
Within ??0.1% RO/??C |
Temperature Effect on Output |
Within ??0.1%/??C |
Electrical Characteristics |
Recommended Excitation Voltage |
2 to 10V AC or DC |
Input Resistance |
350???1% |
Output Resistance |
350???1% |
Cable |
4-conductor (0.5 mm 2 ) chloroprene cable, |
11.5 mm diameter by 1 m long, bared at the tip |
Mechanical Properties |
Safe Overload Rating |
120% |
Weight |
Approx. 6 kg (BEE-A) |
Approx. 5.7 kg (BEF-A) |