LEMI 035

Lviv Centre of Institute of Space Research

FLUX-GATE MAGNETOMETER LEMI-035

Main features:

	High resolution and precision
	Low noise
	Low temperature offset
	Convenience of installation and service
	Low power consumption
	Analog and digital outputs
	Magnetic and temperature channels
	18 months operational guarantee

LEMI-035 autonomous flux-gate magnetometer for 3-component measurement of Earth's magnetic field and its variations at laboratory as well as in geomagnetic observatory is produced on the base of flux-gate sensor, all three components of which are implemented in the same body. It consists of two units - sensor unit with adjustable support and electronic unit both connected by long cable. The electronics is implemented as “black box” unit with digital and analog output which may be connected to any analog registration unit. Low power consumption of the magnetometer requires small buffer battery what is convenient for long-term autonomous measurements in field conditions, where power breaks often occur.

MAIN TECHNICAL PARAMETERS

Measurement range	± 70000 nT
Magnetic field variation range (w/o additional compensation)	± 1000 nT
Analog output sensitivity	5 mV/nT
Analog output range	± 4.8 V
Frequency band, 4^th order Butterworth low-pass filter	0…20 Hz
Noise level at 1 Hz	< 10 pT
Magnetic sensor components orthogonality error	< 30 min of arc
Temperature drift	< 0.5 nT/°C
Operating temperature range	minus 20 to + 60°C
Power supply (external battery voltage)	12⁺⁶_-3 V
Power consumption	< 0.7 W
Thermometer measurement range	minus 100…+100°C
Thermometer resolution	0.01°C
Thermometer basic measurement error	0.5%
Transformation factor	50 mV/°C
Format of data at the digital output (RS-232)	ASCII
Baud rate Stop bit – 1, Parity bit - None	115200 baud
Data/power cable length	1.8 m
Analog outputs cable length	1.8 m
Flux-gate sensor cable length	10 m
Dimensions electronic unit observatory sensor	210x140x60mm D = 210 mm, H = 160 mm
Weight electronic unit observatory sensor	0.5 kg 3.3 kg

Last modified: 06-12-2012