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OLD Product!
AUTONOMOUS METEOMAGNETIC STATION
LEMI-017
| 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 in laboratory and field
conditions, atmospheric pressure and air temperature. Its major advantages
are very low power consumption, temporal drift and high accuracy of
measurements, what makes it especially efficient for long term monitoring.
The magnetometer is produced on the base of flux-gate sensor, all three
components of which are implemented 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. The
electronic unit allows acquisition, processing and storage of data about all
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.
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 512 days with the purpose of magnetic field, atmospheric
pressure and temperature correlation study. |
TECHNICAL
SPECIFICATIONS
Three
component magnetometer
|
Magnetic
field measurement range for each component |
±
68000
nT |
| Noise level at flat part of
frequency response |
<
8 pT rms |
|
Frequency
band |
(DC-0.3)
Hz |
|
Temperature non-stability |
<
0.2 nT/oC |
|
Long-term non-stability |
<
±
5 nT/year |
|
Magnetic
sensors non-orthogonality error less than |
< 30
min of arc |
Pressure
meter
|
Atmospheric
pressure measurement range |
300-1200
mbar |
Temperature
meter
|
Temperature
measurement range |
(-40…+70)
oC |
|
Temperature
measurement error |
0.1
oC |
Two
component tilt meter
|
Tilt
measurement range |
± 15
arc degrees |
|
Tilt measurement error |
± 0.01 arc degrees |
| Sample
rate |
1
samples per second |
|
CompactFLASH Card memory capacity
(FAT16) |
≤
2 GB |
| Power
consumption less than |
0.8
W |
| Length of
connecting cable between magnetic sensor and electronic unit |
10 m |
| Length of
connecting cable between GPS antenna and electronic unit |
3 m |
|
