11
KD2 Pro Operator’s Manual
2. KD2 Pro Overview
4
In dry granular materials where contact resistance can be sig-
nificant, extending the read time to the maximum allowed 10
minutes will produce the most accurate results.
5
In solid materials where a pilot hole has been drilled and
contact resistance can be significant, using thermal grease and
extending the read time to the maximum allowed 10 minutes
will produce the most accurate results
.
6
The SH-1 sensor will take accurate measurements in rock
and cured concrete, but it is very difficult to drill small diame-
ter, parallel holes in these materials to accommodate the SH-1
needles.
Power Mode
With the KD2 Pro, you have the ability to configure the
device to measure each of the three sensor types in either high
power mode or low power mode. In high power mode, the
KD2 Pro applies a relatively large heating current to the sen-
sor during a measurement resulting in greater sensor heating.
In low power mode, the KD2 Pro applies a small current to
the sensor resulting in less heating of the sensor. The KS-1
sensor defaults to low power mode, while the TR-1 and SH-1
needles both default to high power mode. We recommend
that the power mode only be changed from the default set-
tings for special measurements by expert users. In all but a
few cases, changing the power mode from the default settings
will result in poorer accuracy than can be expected in the
default power mode. Do not change the power mode from
the default settings unless you are an expert user and are mak-
ing a specialized measurement. Feel free to contact Decagon
to discuss specifics of your measurement before changing
from the default power mode setting. More specific com-
ments regarding power mode adjustment include:
