Vaisala SHM40 - Manual (Page 24)

USER'S GUIDE____________________________________________________________________
22 __________________________________________________________________ M211423EN-B
Preparations for Freshly Cast Concrete
Preparing the measurement in freshly cast concrete has the advantage
that no drilling of the concrete is needed, and tubes are easy and fast to
install. You can do the preparations without any danger to floor heating
elements or water tubing that may be embedded in the concrete.
After the concrete is cast and you have decided where to measure,
prepare each measurement point as follows:
1. Place the flange (26529HM) around the tube and make sure it clips
on to one of the grooves on the surface of the tube. The distance of
the flange from the bottom of the tube determines how deep the
tube will be inserted in the concrete (dimension X in Figure 6
below).
2. Push the long rubber plug (26530HM) inside the tube to prevent
the fresh concrete from blocking it.
X
1111-090
Figure 6 Preparing the Tube for Fresh Concrete
3. Push the combined tube, flange, and plug to the fresh concrete so
that the flange is level with the surface of the concrete. Depending
on the concrete type you may need to do some trowelling to ensure
a flat surface around the tube. See Figure 7 on page 23.