FR020-NMR

The FR020-NMR unit delivers a Voltage command +/-V (0-10V) to the MPU according the delta between the assigned field and the measured field, thanks to a 16 bits DAC + 12 bits DAC combination. The FR020-NMR integrated in a close loop of the system Magnet and Power Supply Unit, controls the regulation of the magnetic field in a range of +/- 2mG with a resolution of 1 mG and an accuracy of 5 mG, which performances are obtained thanks to the NMR Gaussmeter Subsystem. The regulation occurs in a range of +/- 200 Gauss, close to the setting, in accordance with the main adjustment of the MPU. These performances are obtained with excellent Magnets, designed for NMR measurements. This equipment integrates all the capabilities of an NMR Gaussmeter,which can be used for the purpose. Options are available as NMR accessories. The NMR function allows the following performances : - Range of measurement = 36 milliTesla (360 Gauss) to 2.10 Tesla (21 000G), using probes of dynamic range of 5 (0.04-0.20 T, 0.16-0.80 T, 0.45-2.10 T) - Absolute accuracy : 0.5 microTesla (5 milligauss) - Resolution : 0.1 microTesla (1 milliGauss) - Stability : 0.1 ppm /°C around laborarory conditions + 0.2ppm per year - Regulation +/- 0.2 microTesla (+/- 2milliGauss) - Display 8 digits LED - Setting 8 digits In many applications, high level bursts are sent by the User’s system, which can disturb the NMR detection and regulation : the FR020-NMR incorporates an efficient TRAP Function, which blinds the NMR detection during High Energy Burst send on the need of the whole system, under controle of the user. The basic configuration requires : - The regulator FR020 - One Preamplifier (for one probe) - One Probe (example 0.04-0.20 Tesla, or 0.16-0.80 T, or 0.45 – 2.10 T) . - A set of interconnecting cables.

FRH103

FRH103 Hall Field Regulator Using the same concept of the regulation functions as the NMR FIELD REGULATORS, this equipment is based on Hall Effect Sensor. These instruments are calibrated with NMR reference system, in DC Fields, up to 2.10 T. On special option, it is possible to calibrate the Instrument bellow 40 mT and /or for Fields Higher than 2.1 Tesla, up to 20 T. The keyboard allows special functions : -Gaussian statistics on 100 measurements shared out 10 steps. -Delta field with Field setting: to follow the drift of the measured field. -Edge function provides the Central Magnetic field, with the probe fixed on the edge of a Pole (central region completly free). -Configuration function allows change of scale, select a file for data storage, display Field or Delta or output voltage or compare Edge/Center calibration. On request, the Functions can be customerized (manufacturer modification). Accuracy = 10-3 for each scale Stability = 150 ppm/°C Resolution = 10-4 Display = 8 digits LED