LumaSense Technologies LumaSHIELD Controller Installation Guide: Optical Feedthrough - Manual (Page 2)

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LumaSense Technologies Awakening Your 6 th Sense
LumaSHIELD Installation Guide - Optical Feedthrough-EN 514-0004-01 Rev. A 10/10/13
5. If no torque wrench is available, using an 11/16’’
wrench, tighten approximately an additional one and
a half to two turns as shown in Figure 4. The exact
number of turns depends of various conditions.
6. Allow 24 hours for the PTFE sealant to cure before
exposing to fluids.
WARNING: DO NOT OVER-TIGHTEN THE FEEDTHROUGH
AS IT MAY RESULT IN LEAKAGE OR IT MAY DAMAGE THE
OPTICAL TRANSMISSION OF THE FEEDTHROUGH
.
Torque installation values for NPT threads can be deter-
mined per specific installations only. This is due to the
variations involved in joined parts such as dissimilar mate-
rials of male and female threads, type of sealants used,
and internal variations in product wall thickness. So there
is no standard for torque or number of turns. Therefore
the amount of tightening is discretionary and it is the
responsibility of the user to ensure that proper tightening
has been applied for a pressure tight connection.
Figure 4