4.2
Structure
Depending on the customer-specific order, the device comprises different parts.
①
Cover over buttons and nameplate with general information
⑨
Locking screw for the cover over the buttons
②
Cover with glass pane (optional)
⑩
Cover (rear) for electrical terminal compart‐
ment
③
Display (optional)
⑪
Electrical terminal compartment
④
Safety catch (front)
⑫
Safety catch (back)
⑤
Retaining screw for locking the enclosure (Page 63)
⑬
Ground terminal
⑥
Process connection
⑭
Nameplate with information on the remote
seal
⑦
Nameplate with approval information
⑮
Blanking plug
⑧
Cable inlet, optionally with cable gland
Figure 4-1
Example
● The electronics enclosure is made of die cast aluminum or precision cast stainless steel.
● The housing has a removable cover at the front and the back.
● Depending on the device version, the front cover
②
may be designed with a glass pane.
● The cable gland
⑧
to the electrical terminal compartment is at the side; either the left or
right-hand one can be used. The unused opening is closed with a blanking plug
⑮
.
● The ground terminal
⑬
is located on the side.
● The electrical terminal compartment
⑪
for the supply voltage and shield is accessible when
you remove the back cover
⑩
.
● The measuring cell with a process connection
⑥
is located in the lower section of the
enclosure.
The measuring cell is prevented from rotating by a retaining screw
⑤
.
● The cover of the 4 buttons
①
is located on the upper face of the enclosure. The nameplate
with general information is located on the cover.
Description
4.2 Structure
SITRANS P320/P420 with 4 to 20 mA/HART
Operating Instructions, 11/2019, A5E44852162-AC
27