CiDRA GVF-100 Gas Volume Fraction Monitoring System - Manual (Page 24)

Copyright © 2006 CiDRA Corporation Page 7-7
20639-01 Rev 03
Further tightening of the sensor band screws is made while using the
sensor band spacer tool (shown below) furnished with the sensor
band. The spacer tool is used to set the compression on the Belleville
washers referred to above. Refer to Table 4 for the appropriate
spacer tool based on sensor band part number
Figure 9 Sensor Band Spacer Tool
Using the sensor band screw tightening sequence shown in Figure 7,
insert the sensor band spacer tool over the Belleville washers on the
middle sensor screw assembly and tighten it such that it is snug but
the spacer tool can still be removed. The following figure illustrates
use of the sensor band screw spacer tool.
Figure 10 Sensor Band Spacing Tool Installed on Sensor Screw
Note: Ensure the spacer tool is perpendicular to the attachment rail to
ensure proper tightness. Remove the tool, move to the next sensor
screw, and repeat the tightening on each of the sensor screws.
Important: Tighten each screw once only. Do not retighten each
screw using the gauge.
Sensor screw spacing tool
installed on sensor screw
Sensor screw with
Belleville washers
compressed (typ)
Side view