Brhalf3w, Brhalf4w, Brfull – Campbell Scientific CR9000X Measurement and Control System User Manual
Page 107: Electrical bridge circuits & equations, Hl h l
Section 3. CR9000X Measurement Details
Electrical Bridge Circuits & Equations
BrHalf
X = result w/mult = 1, offset = 0
X
V
V
R
R
R
x
s
s
f
=
=
+
1
BRHalf Equations
(
)
R
R
X
X
R
R
X
R
s
f
f
s
s
=
−
=
−
1
1
BrHalf3W
X = result w/mult = 1, offset = 0
X
V
V
V
V
R
R
X
s
f
=
−
−
=
2
2
1
1
BRHalf3W Equations
R
R X
R
R
X
s
f
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
R
R X
R
R
X
s
f
f
s
=
=
/
BrFull
H
L
BrFull6W
H
L
H
L
X = result w/mult = 1, offset = 0
X
V
V
R
R
R
R
R
R
x
=
=
+
−
+
⎛
⎝
⎜⎜
⎞
⎠
⎟⎟
1000
1000
1
3
3
4
2
1
2
X = result w/mult = 1, offset = 0
X
V
V
R
R
R
R
R
R
=
=
+
−
+
⎛
⎝
⎜⎜
⎞
⎠
⎟⎟
1000
1000
2
1
3
3
4
2
1
2
BRFull and BRFull6W
Equations
(
)
(
)
(
)
(
)
X
X
R
R
R
R
R
X
X
R
R X
X
X
X
R
R
R
R
R X
X
R
R
X
X
1
3
3
1
2
1
1
2
1 1
1
2
2
1
3
4 2
2
4
3
2
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