55 GSM19 Series Magnetometers - Version 7
GEM Systems, Inc. Advanced Magnetometers
For more technical information, visit www.gemsys.ca
5.5 WORKING WITH GRADIOMETER MODE (19G & 19GW)
The gradiometer option is available in GSM-19G and GSM-19WG (Walking Gradiometer) units,
and therefore this section refers only to these units.
Both units enable you to measure the magnetic field gradient between two sensors. These systems
measure and store the gradient between the sensors in nT/m as well as the magnetic field reading in
nT obtained by the lower sensor. The difference is that the Walking Gradiometer records data
continuously for linear interpolation and referencing of ground positions following the survey.
5.5.1 Performing a Reading
After the initial start-up procedures (refer to section 5.3), select the Survey mode from the Survey
Menu
as follows:
SCREEN 44
survey mode position time file
cycle time tuning AC filter
display mode text ID
connect sensor now
029876 readings left
mobile
A-start C-change
←
BF
→
Press
C-change. The following screen is displayed.
SCREEN 45
A - mobile B - base
C - grad
To Next Page
Loading...
