2.4
Sensor connection
The Silometer FMX 570 can be operated with a variety of sensor types, each requiring
a different electronic insert, e.g.:
•
EC 37 Z or EC 47 Z for capacitance and Multicap probes
•
EB 17 Z or EB 27 Z for Deltapilots
Sensor cable
Use commercial 2-core installation cable, max. line resistance 25
Ω
/core, for the sensor/
transmitter cable. If electromagnetic interference is to be expected, we recommend
•
that the PFM negative line be grounded at the sensor (check Ex-regulations)
•
in case of heavy interference, that shielded cable be used, grounded at both
ends.
EC 37 Z and EC 47 Z
The electronic inserts EC 37 Z and EC 47 Z have two measuring ranges which can be
selected by inserting a bridge between terminals 4 and 5 of the insert, see Fig 2.6. Full
instructions on the selection of the insert are to be found in Publication E 07.80.06/1c.
•
Note the zero frequency f
o
____ and sensitivity S_____on the insert.
FEB 17 (P)
The FEB 17 (P) electronic insert can be used with Deltapilot S sensors to measure level
and volume in open vessels.
•
Note the zero frequency f
o
_____ and sensitivity
∆
f _____ of the probe
(see Table 2.2 on page 8)
BA119E15
Insert bridge for
Range II (standard)
Remove for Range I
Ground
connection
FMX 570 input
Fig. 2.6:
Connection diagram for
electronic inserts
EC 37 Z/EC 47 Z
FEB 17/FEB 17 P
1 2 3 4
BA119Y18
FMX 570 input
Fig. 2.7:
Connection diagram for
electronic insert
FEB 17 (P)
Chapter 2: Installation
Silometer FMX 570
13
