NMR20 Gaussmeter Description
Based on the principle of nuclear magnetic resonance the CAYLAR NMR20-Gaussmeter measures magnetic fields from 0.014 T to 13 Tesla with an absolute accuracy better than 0.5 µT.
There is no temperature drift.
The probe which contains a small amount of resonant material is placed inside the magnetic field to be measured. The resonant material is excited by a wideband variable high frequency signal.
For a frequency depending only on the magnetic field, an absorption resonance is generated.
The value of the magnetic field in is deduced from the measurement of this resonance frequency.
This method does not generate any perturbation signal, because the energy in the probe is very low at the opposite of a pulsed measurement system.
It is possible to connect the gaussmeter to an oscilloscope to visualize the RMN signal.
CAYLAR gaussmeter integrate Ethernet (TCP or MODBUS) and RS 232 interfaces for computer monitoring.
The measurement can be performed according different methods :
- Automaticaly on full probe range
- Automaticaly fast scan tracking with 5 % target zone predefined, reading within 3 seconds
- Automaticaly Hall scan tracking, reading within 1 second
CAYLAR propose its NMR gaussmeter in two versions: a 19″ rack or portable type.
The both version can be connected to a multiplexer, whereby it is possible to switch between several probes and control the probe selection through the gaussmeter.
To minimise the number of probes in customer systems, CAYLAR NMR probes have a range of 5. This means that the maximum field measurement of a probe is approximately 5 times the minimum field.
Examples: 0.3 T to 1.5 T , 0.42 T to 2.1 T
For more details see the page NMR Principle