MANUAL – REFLEX EZ-TRAC™ | 83
7. Thread the pin end of the aluminium extension rods into the top
coupling of the instrument.
8. Thread the brass wireline swivel into the upper aluminium
extension rod.
Before starting the survey, ensure that nine meters of non-magnetic
RC drill rods are placed directly behind the RC hammer.
RC environment – azimuth and inclination
1. Mark the wireline cable or use a wireline counter, to prevent the
survey system from being damaged by hitting the top of the RC
hammer.
2. Make sure that the wireline cable goes through the swivel eyelet
and that it is secured.
3. Gently place the survey system at the collar of the hole.
4. Using the wireline, slowly lower the survey system to the survey
station.
5. Keep the survey system stationary at the survey station until the
measurement has been taken.
6. Should you wish to perform a Multi Shot survey, you must now
release the survey system from the wireline as it will rest above
the hammer, and perform the survey while tripping the rods out of
the hole. Continue to the section Tripping out above.
7. Using the wireline, slowly raise the survey system until it reaches
the collar of the hole.
8. Gently lift the survey system from the hole.
9. Place the survey system in a safe position away from the
borehole and unthread the running gear.
11.2.6.2 Inclination
This method is used to achieve Single Shot or Multi Shot readings of
inclination in an RC environment.
In this case, the instrument can be run inside the normal RC drill rods,
since the inclination measurements are not affected by magnetism.
Wireline is used to run the survey system into and out of the
borehole.
The survey system consists of the
REFLEX EZ-TRAC™ instrument and
brass wireline swivel.
Assemble survey system
1. Initiate the instrument using the REFLEX™ EZ-COM unit before the
top coupling is threaded onto the instrument probe.
2. Thread the brass wireline swivel into the top coupling.
Note, since inclination measurements are not affected by magnetism,
the recording can be taken at any position in the RC drill rods.
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