Campbell Scientific CR10 CR10 Measurement and Control - Page 177
R?:30Kn
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SECTION 13. CRlO MEASUREMENTS SHIELD -= R?:30Kn A''/ l Xnv : RrR'f/(R.+R'f), Vs : V* R?/(Rr+Rf) SHIELD R t:3OK Q Rr: 1Kf) B) Ro@P: R, (Rr+Rr)/(Rr+Rf +Rf ) SHIELD VX VS + R1 :1Ka c) Ro: R1, Vs:VrRf/(R.+R?+Rf) 30K 0 FTGURE 13.3-7. Half Bridge Configuration for YSI #44032 Thermistor Connected to CRl0 Showing: A) large source resistance, B) large source resistance at point P, and C) configuration optimized for input settling 13-11
SHIELD
R?:30Kn
SECTION
13.
CRlO MEASUREMENTS
RrR'f/(R.+R'f),
Vs
:
V*
R?/(Rr+Rf)
R,
(Rr+Rr)/(Rr+Rf
+Rf
)
30K
0
c)
Ro:
R1,
Vs:VrRf/(R.+R?+Rf)
FTGURE
13.3-7. Half Bridge Configuration
for
YSI #44032
Thermistor Connected
to CRl0
Showing: A)
large
source resistance,
B) large
source resistance at
point
P,
and
C)
configuration
optimized
for
input
settling
-=
A
l
Xn:
''/
v
B)
Ro@P:
VX
VS
SHIELD
R
t:3OK
Q
Rr:
1Kf)
SHIELD
+
R1
:1Ka
13-11