CMG-3V
To measure the aiitude of a 3V instrument:
1. Connect the inclinometer monitor unit to the
CONTROL
connector of the surface control unit.
2. Switch the
ON/OFF
switch on the monitor unit to the
ON
position. The inclinometer is powered separately from other parts
of the system; this switch provides power to the downhole
circuitry as well as to the monitor unit. The inclinometer should
not normally be powered up whilst the sensor is in use.
3. Read of the
X
and
Y
components of the tilt from the analogue
meters.
4. If both tilts are within the green shaded region, the instrument is
close enough to vertical that it can be levelled and centred
successfully. If either output is in the red shaded region, you
should
not
aiempt t o u nlock o r c entre t he s ensor m asses.
Instead, if possible, you should move the instrument within the
borehole to a place where it can lie closer to vertical.
If you need to use the outputs of the inclinometer for some other
purpose, you can also connect a multimeter to the banana sockets on the
inclinometer monitor unit.
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