Field Work And Search With Gradiometer - proFEX MG-200 Manual

3.3 Menu Mode "OPERATION"
With mode change – buttons' functions change too. All parameters set in "OPERATION" mode will
remain active during current session of work only. After turning gradiometer off and back on,
parameters set earlier during "MENU" mode are automatically restored.
Button 1 – switch between menu modes "MENU" – "OPERATION"
Button 2 ← – "Demagnetize" is used to manually return sensors to the work condition after accidental
magnetization in a strong magnetic field. For example when passing close to a car (within 10 feet) or
another source of a strong magnetic field. When tilting the device more than 30 degrees it's possible to
magnetize the sensors by powerful magnetic field of earth. The device demagnetizes automatically
when it is turned on. Button 2 demagnetization should be performed away from sources of strong
magnetic field. After demagnetization, press button 7 to reset device measurements to 0.
Button 3 ↑ – "Filtering" allows to set filters that lower the influence of metal trash.
Button 4 "OK" – "Sound Volume" has 11 levels from 0 (Mute) to 10 (Maximum volume). Chosen
parameter will remain active only during current session.
Button 5 → – "Sensitivity" allows to choose sensitivity setting - 1 or 0.1 unit. Chosen sensitivity will
remain active only during current session.
Button 6 ↓ – correction of "0". Removes temperature "drift" of "0", has 10 levels (level 3 is set by
default). Chosen correction will remain active only during current session.
Button 7 – "Reset to "0" – located on the device handle is used to reset all device measurements to "0".
All further measurements will be performed from this "0" level.

3.4 Field work and search with gradiometer.

Before beginning work, get rid of all magnetic objects – phone, keys, credit cards, etc.
1 Turn the device on with a switch on the battery compartment.
2 Use button 5 → to switch to "OPERATION" (or return through "MENU"). Display will show "WAIT"
and start countdown to powering up (6 seconds total). During this time the device tunes all systems,
demagnetizes sensors, and calculates gradient of the magnetic field. Then it displays on the screen
the gradient reading, its sign: + (positive) or – (negative), settings for "Filtering", "Sensitivity", and
levels of battery charge: fully charged ≥≥≥ (over 75%); ≥≥ (over 50%); ≥ (less than 10%); blinking sign
≤≤≤ means that batteries need to be charged.