NMR-EA300 System
Générateur de champ magnétique absolue
The magnetic field reference
The NMR-EA300 system is the reference for calibrating magnetic sensors. It allows to generate an absolute magnetic field at <±10mG (0.1 uT) without temperature drift (<0.1ppm/C°) over a range from 14mT to 3T. This system is composed of an EA300 electromagnet with NMR poles, a MPU-16U ±150A ±70V current source of class 1ppm and a NMR20 Teslameter with a magnetic field controller (FR020).
A thermostat chamber can be installed in the air gap (Optionally available on 50mm and 70mm gap poles).
A thermostat chamber can be installed in the air gap (Optionally available on 50mm and 70mm gap poles).
The complete mapping of the air gap on different points of the control range is provided with a resolution of 0.5mm
Scope and Homogeneity of the Poles
| Gap G | B max | Face D | Homogénéité ² | Homogeneity/CUBE |
| 11 mm | 3.03T | 95mm | 0.1%/5x5 | 0.25%/5x5x5 |
| 20mm | 2.50T | 145mm | 0.03%/10x10 | 0.9%/10x10x10 |
| 30mm | 2.12T | 195mm | 0.01%/15x15 | 0.02%/15x15x15 |
| 50mm | 1.60T | 245mm | 0.04%/15X15 | 0.07%/15x15x15 |
| 70mm | 1.21T | 300mm | 0.1%/20x20x20 | 0.18%/20x20x20 |
Specific request
* Required fields.