Omega DP41-B Series, Руководство пользователя

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29
Signal and Power Input Connections
7
7.1 INTRODUCTION
The following describes how to connect your sensors to your meter with and without sensor ex ci ta tion
and how to connect the AC power to your meter. Prior to wiring the sensor to the meter, check with a
multimeter that a proper excitation exists.
WARNING: Do not connect ac power to your meter until you have completed all input
and output connections. Failure to do so may result in injury! This device must only be
installed electrically by specially trained electrician with corresponding qualifications.
Earth ground MUST be connected to the same earth ground used by the signal source, in
order to achieve published stability and accuracy specifications.
7.2 SIGNAL INPUT CONNECTIONS - PROCESS
The following Figures ( 7-1 through 7-5 ) show the connections for voltage, current and po ten ti om e ter
inputs:
Figure 7-1. Current Input Without Sensor
Figure 7-1.
Figure 7-1. Current Input Without Sensor Excitation
Figure 7-2. Current Input With Sensor
Figure 7-2. Current
Figure 7-2. Current Input With Sensor Excitation
NC
+S
–S
P9
1
2
3
1
2
3
P3
NC
+R
(+)
(
-
)
(4-20mA)
+E
–E
JUMPER
USER
PROVIDED
METER
-R
NC
+S
–S
P9
1
2
3
1
2
3
P3
NC
NC
NC
+
-
(4-20mA)
(+)
(
-
)
METER