Geokon 6350, Installation Manual, Page: 14 / 26

8
2.2.2 Installing Biaxial Tiltmeters
The sensors may now be installed. Attach the tiltmeters to the mounting bracket using the
supplied 10-32 cap screws, washers, and nuts.
Remove the slotted head locking clamp
screw completely and replace with the Phillips head seal screw provided. This is
very important if the sensor is to remain waterproof.
Do not tighten the cap screws
yet. Attach a portable readout such as the GK-404 or GK-405 (see Section 3 for readout
instructions) and observe the reading. Adjust each sensor in their slots of the mounting
bracket while observing the readout until the tiltmeter reads within
±
50 digits of the zero
reading as shown on the calibration report supplied with each sensor. (See Appendix A
for a sample calibration report.) When the desired reading is reached, tighten the cap
screws to secure the tiltmeter in place. Check the reading again after tightening to make
sure it still reads within
±
50 digits of the zero reading. Figure 7 shows the completed
installation.
If the tiltmeters are installed in an exposed location in a construction area, and/or if the
installation is in direct sunlight, it should be covered with a protective enclosure and/or
insulation.
Top View
Tilt
-
+
Wall
Tilt
-
+
10-32 Nuts
10-32 Cap Screws
Mounting Bracket
Tiltmeter Mounting Flange
Figure 7 - Biaxial Installation