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When choosing a gauge location site, take into consideration the
ambient temperature and location of power outlets, large objects
and any other nuclear gauges.
♦ Ensure that the room where the gauge is to be located is
well ventilated and does not experience abrupt temperature
or humidity changes.
♦ Place the gauge on a level, sturdy surface.
♦ Install the gauge with the control unit within reach of the
operator's workstation and the sample chamber, connected
to the control unit, readily accessible for sampling. The
background count will account for any external hydrogen
sources (Chapter 3: Operating the Gauge). If the system is
moved or objects containing hydrogen and/or larger objects
are moved near the sample chamber after taking the
background count, a new background count should be taken.
♦ Do not stand close to the sample chamber due to possible
measurement effects and radiation safety.
♦ The line voltage should not vary by more than 10%.
♦ The ambient temperature should be between 10 and 33 °C
(50 - 91 °F), and the relative humidity should be between 20
and 90 percent.
♦ The gauge must be installed at least ten meters (33 feet)
from any other nuclear gauge.
♦ Do not expose the gauge to open flames, dust, direct
sunlight, or ammonia and other corrosive fumes.
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