User manual
eDAS
Enhanced Data Acquisition System
Rev.
EN-02_18 AVC
Date:
(IT 21_03_16 rev. 2 AM)
- 12 -
eDAS logger fitted with Multiplexers
The implementation of one or more
“
multiplexers
”
offers the chance to
increase
eDAS
basic standard number of sensors that can be connected
(generally 8 or 16) and expand the logger possibilities at a low cost.
The following example shows how a 16-channel
eDAS
is expanded to
32 channels (in groups of 4) keeping it in the same standard box.
Adding a multiplexer to any
eDAS
logger entails that at least one of the
basic channels available has to be dedicated to the new device, by
configuring it according to the technical and electrical features of the
new sensors to be implemented into the system (see fig. 3).
This means that a multiplexer (or a group of
multiplexers) may be connected exclusively to
transducers of the same type (e.g. vibrating
wire gauges or current output transducers).
Consequently, for each different type of sensor
that you wish to add to your logger you will
need to get a further dedicated multiplexer (or a
group of multiplexers) that will relate to as
many input channels of
eDAS
logger (which will
be suitably configured).
Fig. 4
–
eDAS
Multiplexer Terminal Board
Pot. Ch 0 -3
-
Ch
0
Ch
1
Ch
2
Ch
3
Connect the sensors wires to the
multiplexer terminal board as shown
in the picture on the left.
When a channel is measuring its LED will
turn on.
S
+
