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Vaisala FS11P - Communication Options; Figure 29 Cable Grounding Instruction; Table 7 Communication Cable Lengths

Vaisala FS11P
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User's Guide _______________________________________________________________________
56 ___________________________________________________________________ M211107EN-C
3. Remove the cap of the cable gland, including the plastic cylinder.
Slide the cap with the plastic cylinder onto the cable.
4. Add shrinkable tubes to increase the cable diameter of thin cables
(diameters less than 5mm).
5. Slide the plastic cylinder to the edge of the cable sheath. Turn the
cable shield over the cylinder, see Figure 29 below.
6. Tighten the cable with the cable gland and proceed with the wiring.
7. Ground the signal cable with the same method at both ends.
8. Wire the communication cable according to the instructions in
section Communication Options below.
0201-070
Figure 29 Cable Grounding Instruction
The following number refer to Figure 29 above:
1
=
Cable shield
Communication Options
The FS11P sensor provides RS-232, RS-485, and modem transmission
interfaces for data messages. A separate RS-232 interface is provided for
maintenance purposes. Consider your communication needs before the
installation. The method of communication depends on the distance
between the computer or the display and the FS11P sensor, and on the
number of FS11P sensors. The possibilities are described in Table 7
below.
Table 7 Communication Cable Lengths
Cable Length
One FS11P
Several Sensors on the Line
< 50 m
RS-232, RS-485
RS-485 (300 or 1200 bps)
< 1200 m
RS-485, modem
RS-485 (300 or 1200 bps)
> 1200 m
Modem
Modem (300 or 1200 bps)

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