BMS-01 Borehole Magnetic Susceptibility Probe
The BMS-01 magnetic susceptibility probe is contained in a 40 mm diameter non-magnetic housing which is pressure rated to 2,000 meters.
The sensor is controlled by an on-board microprocessor that samples the sensor signal at a rate of 2 Hz and transmits the digital result along a 4 conductor logging cable to the IFG BIN-04 digital data interface console.
The BMS-01 sensor is a single coil design 40-cm in length, operating at a frequency of 1.4 kHz. The single coil design produces a single peak response.
The minimum resolvable layer thickness of the sensor is 25 cm. The range of the coil is 10–5 to 10-1 cgs in units of 1X10–5 cgs. An available calibration source permits the absolute calibration of the BMS-01 for various borehole diameters.
| Specification | |
| Sensor Range | 10–5 to 10-1 cgs |
| Sensitivity | 10x105 cgs |
| Housing | High strength filawound tube |
| Maximum Depth | 3000 meters |
| Connection | 4-pin (Gearhardt Owen) |
| Temperature Range |
Storage; -35 to +70°C Operating: 0 to +70°C Extended: 0 to +120°C |
| Sampling Rate | 2 Hz |
| Output | 10mA current loop, 4800 baud |
| Supply Voltage | 48 VDC @ 5W (at probe header) |
| Dimensions | 40mm diameter x 1.2 meters long |
| Weight | 4 kg |