Campbell-scientific CR9000X Measurement and Control System Instrukcja Użytkownika Strona 107

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Section 3. CR9000X Measurement Details
Electrical Bridge Circuits & Equations
BrHalf
X = result w/mult = 1, offset = 0
X
V
V
R
RR
x
s
s
f
==
+
1
BRHalf Equations
()
RR
X
X
R
RX
R
sf
f
s
s
=
=
1
1
BrHalf3W
X = result w/mult = 1, offset = 0
X
VV
VV
R
R
X
s
f
=
=
2
21
1
BRHalf3W Equations
RRX
RRX
sf
f
s
=
= /
BrHalf4W
H
L
H
L
X = result w/mult = 1, offset = 0
X
V
V
R
R
s
f
==
2
1
BRHalf4W Equations
RRX
RRX
sf
f
s
=
= /
BrFull
H
L
BrFull6W
H
L
H
L
X = result w/mult = 1, offset = 0
X
V
V
R
RR
R
RR
x
==
+
+
1000 1000
13
34
2
12
X = result w/mult = 1, offset = 0
X
V
V
R
RR
R
RR
==
+
+
1000 1000
2
1
3
34
2
12
BRFull and BRFull6W
Equations
(
)
()
()
()
XX RRR
R
RX
X
R
RX
X
XX RRR
R
RX
X
R
RX
X
133
1
21
1
2
11
1
221
3
42
2
4
32
2
1000
1
1
1000
1
1
=− + +
=
=
=++
=
=
//
//
4
2
X
1
and X
2
are intermediate
variables for equation
solution.
FIGURE 3.1.5-1. Circuits used with bridge measurement instructions
3-19
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