HBM AED9301B - Page 11

Transducer connection
9
AED9301B HBM
You can connect SG transducers in a full-bridge circuit with a total bridge resistance of
R
B
= 80...4000 . With a transducer resistance of >1000 , increased noise (measurement
ripple) must be taken into account.
The bridges are supplied with power in the AED9301B basic device at 5 V
DC
.
The 6-wire connection avoids the effect of a long cable on the measured value. When sev-
eral transducers and a junction box are used, the 6-wire circuitry is routed to the junction
box.
Fig. 3.1-2.: Transducer connection in the AED9301B basic device for a 6-wire connection
There are two methods of connection for transducers implemented in four-wire circuitry:
 Connection via a 6-core extension cable; bridged sensor circuit in the transducer con-
nector (connect terminals 3 and 3’ and 2 and 2’).
 Connection without an extension cable; sensor circuit bridged at the transducer electron-
ics (connect terminals 3 and 3’ and 2 and 2’).