The LOM-2 processor Overhauser magnetometer is a precision measuring tool based on the principle of dynamic polarization of nuclei (Overhauser effect), intended for measuring the module of the Earth's magnetic field induction. The magnetometer is based on an Overhauser nuclear precession converter with a stable working substance (lifetime is about 3-5 years). By compared to proton converters, this type of converter has lower power consumption, greater sensitivity and gradient stability.
Operates with three-core logging cable.
SPECIFICATIONS
| Magnetic induction module measuring range, nT | 30000-70000 |
| Sensor transformation coefficient | 1,0·1012 ± 0,5 |
| The main systematic measurement error, nT | 3 |
| Additional measurement error in the temperature range from 10 ° С to +50 ° С, nT | 1 |
| Additional measurement error when the primary transducer deviates by an angle of 45 ° from the optimal orientation, nT | 1 |
| Downhole tool supply voltage, V | 40-80 |
| Output code | RS-232 |
| The life time of the working substance of the sensor, years | 3-5 |
| Gradient stability, nT / m | 10000 |
| Time of establishment of an operating mode, sec | 10 |
| Duration of a single measurement, sec, no more | 1 |
| Cycle of automatic start of measurements, sec | 1, 2, 3, 4… |
| The angle of the optimal orientation of the axis of the cylinder of the primary transducer relative to the direction of the magnetic field, deg | not orientable |
| Maximum operating temperature, °С | -30..+80 |
| Maximum hydrostatic pressure, MPa | 20 |
| Dimensions (excluding connectors), mm: - sonde - electronic unit | 42х1500 160х90х60 |
| Weight, kg | 10 |
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