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Fluxgate Magnetometer for Magnetotelluric Applications

 
Product Overview
  Fluxgate for
Observatory Application
  Fluxgate for
Magnetotelluric Application
  Fluxgate for
Space Application
  Fluxgate for
Shipboard Application
  Proton Magnetometer
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Services Overview
  Calibration Service
  Electronic Development
 
 
 
Download Datasheets:
Magnetotelluric
Magnetometer
Fluxgate Sensors
 

 

The magnetometer for magnetotelluric applications consists of a vector-compensated ringcore sensor with Helmholtz coil system for field compensation and a digital magnetometer electronics. The coil system is manufactured of Titan to provide high thermal stability of the compensated field. with 10ppm/°C. Sensor and electronics are integrated in a waterproof aluminium box. (See pic. 2)
The magnetometer is interfaced by a host PC via RS232 or RS485 and can be connected to a host PC or an external data logger. An external trigger input can be used to synchronise the measurement of the magnetic field (e.g. with a GPS clock). Sampling rate up to 20 vectors/sec is possible.
Two measurement ranges are available, which differ in the differential non linearity (DNL). The first range covers the whole earth's magnetic field range of +/-60000nT with a DNL of 350pT. The second range covers a magnetic field of +/-4000nT with a DNL of 30pT. For the second range an automatic main field compensation is available.
Besides the magnetic field vector the temperature of sensor and electronics box is sampled.

 

3-component fluxgate sensor
3-component fluxgate sensor

MT Magnetometer
MT Magnetometer


Bildunterschrift
 
Technical Data:

digital fluxgate magnetometer
3-component ringcore sensor

sensor mainframe material:

Titan (expansion coefficient: 10ppm/°C)

sensor dimensions:

H: 11cmÆ: 12cm

sensor weight:

2.5kg

dimensions of the magnetometer:

H:26cmÆ: 22cm

total weight of the magnetometer:

8kg

noise level:

<20pT/ÖHz

long term stability:

<10nT/Year

orientation:

orthogonal system (X,Y,Z)

resolution:

+/-10pT

dynamic range:

full range mode:

+/-60000nT (DNL: 350pT)

variometer mode:

+/-4000nT (DNL: 30pT)

 
automatic compensation in the variometer mode
external trigger input (TTL-level or RS232-level)

data interface:

RS232 or RS485

sampling rate:

application specific up to 20Hz

data format:

application specific ASCII or binary

 
external trigger input

cable length between magnetometer   
and host PC:

20m with RS232
100m with RS485

input voltage:

12V

power consumption:

2.0W with RS232
2.4W with RS485