EN
14327097.02 09/2019 EN/DE/FR/ES
20
WIKA operating instructions models TGS55, TGS73 with 831 (Ex)
5.2 Thermal contact medium
When using thermowells, they must be filled with a thermal contact
medium in order to reduce the heat transfer resistance between the
outer wall of the probe and the inner wall of the thermowell. The working
temperature of the thermal compound is -40 ... +200 °C.
WARNING!
Physical injuries and damage to equipment due to oil
spraying out
When pouring a thermal contact medium into a hot
thermowell, there is a danger of physical injuries and damage
to equipment due to oil spraying out.
▶
Do not fill hot thermowells
5.3 Electrical connection
The electrical connection must only be made by qualified skilled
personnel. Connection details and switching functions are given on
the product label. Connection terminals and ground terminal are
appropriately marked. The instrument must be connected to the
equipotential bonding of the plant. The instrument must only be used in
conjunction with the corresponding isolating amplifier (see chapter 9.3
“Associated isolating amplifiers”).
→ For performance limits, see chapter 9 “Specifications”.
Safety instructions for installation
■
Install instruments in accordance with the manufacturer's instructions
and the valid standards and regulations.
■
Only connect circuits with the same voltage and type of protection to
the switch contacts and connecting cables.
■
Size the connecting cables for the largest current strength in the
circuits and ensure sufficient UV resistance and mechanical stability.
■
With flexible connecting cables, use isolated end splices. Max.
permissible conductor cross-section 1.5 mm².
5. Commissioning, operation
