LEMI-102

Lviv Centre of Institute of Space Research

OLD Product!

VERY LOW NOISE INDUCTION MAGNETOMETER FOR GEOPHYSICAL APPLICATION LEMI-102

Main features:

	High sensitivity
	Low noise, near the theoretically lowest possible level
	Wide frequency band
	Switched types of amplitude-frequency response
	New methodology of correction of linear amplitude-frequency response
	Suppression of 50 (60) Hz interference
	Low power consumption
	Ruggedized and waterproof
	Metrological certification

Frequency Response	Noise Level

The magnetic feedback design is utilized what provides a stable response over several decades of frequency. Three types of frequency response (see fig.) are possible to switch: linear-flat (1), extra-flat (2) and ultra-linear (3). Over the flat band region the sensor operates as a B field detector; for the frequencies below the flat part the sensor response is linearly proportional to signal frequency or to dB/dt derivative. A matched low noise preamplifier is connected to the coil inside the waterproof case and is powered from the connector by 12 V power supply.

Technical Specifications:

Frequency range	0.0001 to 200 Hz
Sensitivity: types 1,2 (flat part) type 3 (linear part)	20 mV/nT 20 mV/nT*Hz
Power consumption	20 mA at 12 V
Length, cm	120
Weight, kg	15
Diameter, cm	10
Cable length, m	200

Last modified: 03-11-2014