Interface Inc.
●
7401 East Butherus Drive, Scottsdale, Arizona 85260 USA
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Phone 480.948.5555
●
Fax 480.948.1924
www.interfaceforce.com
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Email:
●
ORDER TOLL-FREE 800.947.5598
17
mV/V quarter bridge
ch 1
ch 2
ch 3
ch 4
+Ud
3
14
25
36
-Us
5
16
27
38
HBx
8
19
30
41
AUX
6
17
28
39
QB 120
11
22
33
44
QB 350
10
21
32
43
QB 1000
9
20
31
42
Sw.
1
12
23
34
The active strain gage R4 is connected to the terUd, AUX and
-Us in 3-wire technology.
HBx: The solder bridges “8”, “19”, “30” or “41” must be closed so that
the internal bridge completion resistors R1 and R2 are activated.
A solder bridge should be set depending on the DMS resistance
(120/350/1000 Ohm), e.g. 120 Ohm at channel 1: Solder bridge 11
(vertical); 350 Ohm at channel 2: Solder bridge 21 (horizontal).
+Us
-Us
-Ud
+Ud
R1
R2
R5
R4
AUX
