User`s guide

User's Guide _______________________________________________________________________
_________________________________________________________________________________
18
Figure 5.5 Close the cable lead-through of the rubber plug
However, we recommend that you leave the probe into the sleeve as this ensures the best
possible reliability of the readings. When the concrete is dry enough and measurements are no
longer necessary, pull the probe out with the installation cover and the sleeve.
Starting the measurements
The humidity of the hole reaches an equilibrium with the humidity of the concrete
approximately in three days. Before this, the measurements cannot be taken. If the probe has
not been left in the sleeve, insert it at least 30 minutes before starting the measurements. Do
not start measurements before readings have stabilized. Connect the cable in the connector
(PROBE) at the bottom of the HMI41. Then follow the instructions of this manual. Turn the
indicator on with the button ON/OFF:
RH
T°C
%
Numbers on the first line indicate the humidity reading and numbers on the second line
indicate the temperature reading. The first number on the second line (here 1) indicates the
currently selected probe (1-10). If the individual adjustment coefficients have been entered in
the HMI41 memory, make sure that this number corresponds to that marked on the product
label. If necessary, change the number on the display: press ENTER and simultaneously the
button ▲ (number up) or the button ▼ (number down). When the probe number is correct,
release the buttons.
The readings measured by the probe appear on the display. When the measurements have
been taken, turn the HMI41 off and disconnect the cable. Fold the probe cable in the
installation cover and close the lid carefully. If you do not wish to leave the probe into the
sleeve, close the sleeve with the rubber plug.