CiDRA SONARtrac PW VF-100 - Manual (Page 64)

20831-01 Rev 05 Page 5-46
5.10 Special Installation Instructions for Covers with
Spacers
The passive sonar meter is able to be installed on non-standard size
pipes found at some installation sites.
WARNING
EXPLOSION HAZARD – The ATEX Zone 2 approval applies to
Sensor Heads with integral gaskets sized to fit the pipe. Zone 2
certification prohibits the use of spacers of any kind. Contact
Customer Support about whether an ATEX Zone 2 solution
exists for a particular pipe diameter.
For example, a fiberglass pipe may have an outside diameter of 15
inches due to the fiberglass material layup. In this case, a custom
sensor band to fit the pipe circumference would be manufactured.
The sensor cover would be modified with the addition of a spacer in
order to make a proper seal with the pipe. The following figure
illustrates such a cover.
Figure 49 Cover with Spacer
In some cases a rubber skiving kit (lengths of elastomer strips to wrap
around the pipe) is also included. Install this on the pipe where the
rubber adapter ring will contact the pipe prior to installing the cover as
follows:
1. Measure the distance between the inside edges of the sensor
cover rubber adapter rings and mark this distance on the process
pipe.
2. Install the elastomer strips such that the in-board edges of them
align with the marks on the pipe, and the paper covered adhesive
strips will contact the pipe.
a. Remove the paper strips covering the adhesive.
Rubber adapter
ring
Cover boot seal
edge
Rubber adapter ring
seam, apply RTV