EN
14302224.0
1
01/2023
EN/DE
Additional operating instructions TC82, TC83, intrinsically safe designs (Ex i)
9
3. Commissioning, operation
3.1 Mechanical mounting
3.1.1 Parallel threads
If the thermometer connection head, neck tube, protection tube or process connection are
connected with parallel threads (e.g. G ½, M20 x 1.5 ...), these threads must be secured
using seals which prevent liquids from penetrating into the thermometer.
As standard, WIKA uses copper seals for the connection between the neck tube and the
protection tube, and a paper flat gasket for the connection of the connection head and the
neck tube or protection tube.
If the thermometer and the protection tube are already connected, the seals will already be
mounted (if ordered). The plant operator must check whether the seals are suitable for the
operating conditions and must replace them, if necessary, with suitable seals (see chapter
11 “Accessories” in the operating instructions “High-temperature thermocouples, models
TC80, TC82, TC83 Calitum
®
, TC84“ (article number 14486177)).
Seals must be replaced after dismounting!
3.1.2 Tapered threads
With NPT or other tapered threads, it should be checked whether it may be necessary
to seal them additionally with PTFE tape or hemp. The threads must be lubricated with a
suitable lubricant before fitting.
