Ametek Land CDA, Руководство пользователя

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Page 14
Thermometer User Guide
CDA
5.3 Loop Resistance
The maximum allowable resistance in the thermometer current loop for a
givenpower supply voltage is illustrated in Fig. 13. Information on how to
adjust thepower supply voltage for a LAND power supply is given in the Power
Supply Unit User Guide.
Fig. 13 - Graph showing load resistance versus power supply voltage
294013
NOTE
The system load resistance includes the cable resistance and the indicator
resistance.
Power Supply Voltage (V)
M
a
xi
m
u
m
L
o
o
p
R
es
is
ta
n
ce
(
o
h
m
s)
1000
900
800
700
600
500
400
300
200
100
0
0 5 10 15 20 25 30 35