MANUAL – REFLEX EZ-TRAC™ | 66
10.5.1.3 Register zero position
It is important that the correct survey mode – Gravity Toolface or
Magnetic Toolface – is selected; otherwise the tool face calculation
will be based on incorrect input.
Figure 78 Register zero position
Register zero position
1. From the MAIN menu, select Survey.
2. From the SURVEY menu, select Orientation.
3. To use the default name, select YES. Continue to step 6 below.
4. To enter a survey name, select NO.
5. Use the navigation keys to enter the Survey Name. Select
CONTINUE when finished.
6. Select survey mode, GRAVITY TOOLFACE or MAGNETIC
TOOLFACE.
7. Position the instrument in correct zeroing position and keep it
stationary. For the Magnetic Toolface mode, be sure to avoid any
magnetic interference.
8. Direct the IR port of the
REFLEX™ EZ-COM unit towards the IR port
of the
REFLEX EZ-TRAC™.
9. Select MEASURE to register the measurement.
10. Keep the control unit aligned with the instrument until ‘Tool is now
set to zero’ is displayed. Continue to the section Downhole survey
below.
10.5.2 Use stored zeroing
The following criteria have to be fulfilled to use the stored zeroing
value:
• the survey mode (Gravity or Magnetic) of the stored zeroing must be
applicable to the new survey
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