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Based on the principle of nuclear magnetic resonance the DRUSCH NMR-Gaussmeter measures magnetic fields of sufficient homogeneity from 0.02 to 9.00 Tesla with an absolute accuracy better than 0.5 microTesla.
The measurement will be done automatic whereat fast scan tracking accelerates and eases the signal detection. It is also possible to make the measurement manual.
Via theinterfaces RS 232 or IEEE 488 functions like signal detection can be driven through a computer. In addition it is possible to connect the gaussmeter to an oscilloscope for visualizing the signal.
By the keyboard up to 10,000 measured values can be processed with respect to storage, average, and deviation.
DRUSCH offers the nmr gaussmeter in twoversions: As 19" rack or portable type. The rack version can be connected to a multiplexer, whereby it is possible to switch between several probes and control the probe selection through the gaussmeter.
- automatic
- fast scan tracking the whole probe range
- manual
- in certain cases, where the magnetic field lacks uniformity, field search can also be done manual
- BNC (signal and trigger port towards oscilloscope)
- DB 25 (connection towards multiplexer - rack only)
- Lemo (single connection towards pre amplifier/probe)
- RS 232 (digital interface towards computer)
- IEEE 488 (digital interface towards computer)
Via the digital interfaces following functions can be driven through a computer:
- internal clock
- nmr frequency
- measuring mode
- probe type
- nmr signal
- signal locking status
While the portable version of the gaussmeter is offered with the choice of RS 232 or IEEE 488 interface, the rack version is offered with the possibility of both interfaces in one model. See versions description below.
| Measuring range |
0.02 to 9 Tesla |
| Absolute accuracy |
better than +/- 0.5 µT |
| Relative accuracy |
better than +/- 0.1 µT |
| Required Homogeneity |
200 - 1000 ppm/cm |
| Internal counter stability |
< 0.5 ppm between 15°C and 30°C
+/- 1 ppm over 0°C to 70°C
< 1 ppm/1st year
< +/- 0.2 ppm/following years |
| Automatic tracking |
100% of the probe range |
| Tracking velocity |
0.01 T/sec. |
| Max. time for registration |
4 to 32 sec., depending on the probe |
| Reading rate |
2/sec. |
| Reading |
8 digits LED |
| Operation temperature |
15°C to 35°C |
| Storage temperature |
- 10°C to + 45°C (incl. probe) |
| Max. magnetic field of environment |
0.2 T |
| Main Voltage |
40 VA - 110-120/220-240 V - 50/60 Hz |
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Portable- Dimensions 343 mm - 2U - 370 mm (w-h-d)
- Weight 6.5 kg
- Interfaces RS 232 or IEEE 488
19" Rack- Dimensions 19" - 2U - 352 mm (w-h-d)
- Weight 6.5 kg
- Interfaces RS 232 or RS 232 + IEEE 488
The rack version can be connected to a multiplexer, whereby it possible to switch between several probes and control the probe selection through the gaussmeter.
- special ruggerizzed or version with two displays on request
 picture of the nmr gaussmeter with description of the switches and controls as well as links to explanations in the manual.
this page's information as pdf-file for better printing and to download.
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