Peekel Instruments PICAS - Displacement Transducers

Peekel Instruments User manual PICAS V2.6.1
Page 12 of 59
A similar situation as with the ½-bridge connection method has appeared. Every 1 mΩ of
difference in resistance, when using 120Ω straingauges, gives a change in signal-offset of 2
µV/V. This may be compensated internally by the balance circuit. However, the
temperature-influence cannot be compensated for. Short and thick cabling is again highly
recommended.
2.1.8 Displacement Transducers
LVDT’s, or Linear-Variable-Differential Transformers may be configured as full- or half-
bridges. The connection method for both possibilities is shown in the next figures.
-EX
+EX
9 polig
male Sub D
+SE
-SE
-
IN
+IN
-EX
+EX
-
IN
+IN
5
9
6
1
Connect cable screen to
connector case.
Figure 7: Connection of a full-bridge lvdt.
-EX
+EX
9 polig
male Sub D
+SE
-SE
+IN
-EX
+EX
+IN
5
9
6
1
Connect cable screen to
connector case.
Figure 8: Connection of a half-bridge lvdt