4 Transmitter
18
4.3.
Commissioning
Pos: 36 /TD/Erste Schritte/MUF 63xx/Mechanische Montage 6781 @ 3\mod_1239807163104_79.doc @ 31204 @ 3444 @ 1
4.3.1.
Mechanical assembly
• Carefully
perform
assembly
work.
•
Take special care with leaktightness. We recommend
inserting a metal sealing ring (internal diameter 21 mm).
•
Do not use any hygroscopic materials for the sealing.
> Only use force on the union nut.
Depending on the application, there are three different assembly
options:
Assembly
Application
Without stainless steel
measurement chamber
and cooling coil
•
Process temperatures 0 to 50 °C
•
Attachment of the sensor directly in
the process possible
•
No fast assembly/dismantling of the
testo 6781 required and sufficient
inflow of the sensor (1 l/min.) exists
With stainless steel
measurement chamber
•
Process temperatures 0 to 50 °C
•
Fast assembly/dismantling of the
testo 6781 required and/or
•
No sufficient inflow of the sensor
(1 l/min.) exists
With stainless steel
measurement chamber
and cooling coil
•
Process temperatures 50 to 200 °C