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Home Sensors Autonomous Meteomagnetic Station LEMI-017

Autonomous Meteomagnetic Station LEMI-017

Description

LEMI-017 digital seven component meteomagnetic station (MMS) (three magnetic + 2 tilt + atmospheric pressure + temperature channels) is intended for the measurement of natural magnetic field components and their variations, atmospheric pressure and air temperature in laboratory and field conditions and in Antarctic conditions too.

The magnetometer is produced on the base of flux-gate sensor, all three components of which are im-plemented in the same thermostable housing. The pressure meter is based on precise tensoresistive sensor produced by industry. The temperature meter is made on the base of thermoresistor. MMS is supplied from autonomous PSU based on solar battery SR50. The electronic unit allows acquisition, processing and storage of data about all the parameters variations to the internal FLASH memory and their transmission to the computer via RS-232 interface. Built-in GPS receiver provides satellite synchronization of the internal clock and the coordinates of the MMS location. MMS operation algorithm allows organizing both autonomous and synchronous operation of a set of the MMS installed at the studied area.

Technical specification

Three component magnetometer

  • Magnetic field measurement range for each component ––– ±55000 nT
  • Noise density at 1Hz frequency less than ––––––––––––––– 15 pT/√(Hzrms)
  • Frequency band ––––––––––––––––––––––––––––––––––– (DC-0.2) Hz
  • Temperature non-stability ––––––––––––––––––––––––––– 0.2 nT/oC
  • Long-term non-stability ––––––––––––––––––––––––––––– 5 nT/month
  • Magnetic sensors non-orthogonality error less than –––––– 30 arc minutes

Pressure meter

  • Atmospheric pressure measurement range ––––––––––––– 0.05-0.15 MPa

Temperature meter

  • Temperature measurement range –––––––––––––––––––– (-40…+40) oC
  • Temperature measurement error ––––––––––––––––––––– 0,1 oC

Two component tilt meter

  • Tilt measurement range ––––––––––––––––––––––––––– ±15 arc degrees
  • Tilt measurement error –––––––––––––––––––––––––––– ±0.3 arc degrees
  • Sample rate ––––––––––––––––––––––––––––––––––––– 1 samples per second
  • FLASH memory capacity ––––––––––––––––––––––––––– 512 MB – 2 GB
  • Power consumption less than ––––––––––––––––––––––– 0.7 WW

Innovative Aspect and Main Advantages

Its major advantages are very low temporal drift and high accuracy of measurements, what makes it especially efficient for long term monitoring. LEMI-017 provides simultaneously measurements of 3 magnetic field components, atmospheric pressure, temperature and flux-gate sensor tilts with high resolution and allows one to determine a correlation of these parameters. The station does not require the precise flux-gate sensor orientation.

Areas of Application

LEMI-017 can be used as the equipment of autonomous weather stations, which is able to register data during 6 months and longer with the purpose of magnetic field, atmospheric pressure and temperature correlation study.


Fig. 1 Meteomagnetic station LEMI-017.


Fig. 2 Main window of LEMI-017.exe program.

Stage of Development

LEMI-017 is already on the market. LC ISR can produce 50-100 stations per year.

Contact Details

Valery Korepanov
Organization: Lviv Center of Institute of Space Research NASU-NSAU
Address: 5A, Naukova str. Lviv-060, 79000, Ukraine
(38-0322) 639163
This e-mail address is being protected from spambots. You need JavaScript enabled to view it

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