Vega FIBERTRAC 31, Быстрая настройка

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9
3 Mounting
FIBERTRAC 31 • Four-wire 4 … 20 mA/HART
62067-EN-211203
Metric threads
In the case of instrument housings with metric thread, the cable
glands are screwed in at the factory. They are sealed with plastic
plugs as transport protection.
You have to remove these plugs before electrical connection.
NPT thread
In the case of instrument housings with self-sealing NPT threads, it is
not possible to have the cable entries screwed in at the factory. The
free openings for the cable glands are therefore covered with red dust
protection caps as transport protection.
Prior to setup you have to replace these protective caps with ap-
proved cable glands or close the openings with suitable blind plugs.
The suitable cable glands and blind plugs come with the instrument.
3.2 Mounting instructions
Note:
During the planning, our specialists will analyse the conditions of the
measurement loop to dimension the isotope accordingly.
You get a "Source Sizing" document specifying the required source
activity and containing all relevant mounting information for your
measuring point.
You must follow the instructions in this "Source Sizing" document in
addition to the following mounting instructions.
The following mounting information is applicable as long as there is
nothing else specified in the "Source Sizing" document.
L1
L2
h
Fig. 3: Level measurement in a storage tank
h Measuring range
L Measurement length (L1, L2)
Cable glands
Installation position