WIKA TC12-M - Handbuch (Seite 15)

GB
4. Design and function
14083458.01 09/2013 GB/D
WIKA operating instructions models TR12, TC12 (Ex i) 15
4.3 Neck tube versions
4.4 Housing and connection heads
The designs of the housing and connection heads are given in the respective data sheet.
Legend:
 Neck tube
 Thread to the thermowell
 Measuring insert
 Thread to the connection head
A(U
2
) Immersion length
(tapered thread)
A(L
1
) Insertion length
(parallel thread)
NL Nominal length
N(M
H
) Neck length
tapered
thread
parallel
thread
14013854.02
parallel
thread
tapered
thread
fabricated neck tube
(neck tube welded)
“nipple-union-nipple”
neck tube
tapered
thread
parallel thread with
counter nut