Omega DP461-S, Руководство пользователя, Страница: 41 / 175

7-1
Signal and Power Input Connections
7
7.1 INTRODUCTION
The following describes how to connect your sensors to your meter with and
without sensor excitation 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.
7.2 SIGNAL INPUT CONNECTIONS
The following figures (7-1 through 7-5) show the connections for voltage,
current and potentiometer inputs:
Figure 7-1. Current Input Without Sensor Excitation
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