Siemens MS Series, Инструкция по эксплуатации, Страница: 108 / 130

SITRANS P, MS series
108
C79000-B5674-C40-04
Installation
A load of at least 230 ohms must be available in the signal circuit for error-free com-
munication (see Figure 22, p. 107). A load is already installed in the device for using
power disconnectors for Smart transmitters, e.g. Siemens 7NG4021 (Figure 6, p.
80).
5.3 Installing Digital Indicator
1. Unscrew the housing cover from the electronic compartment.
2. Plug in the connection cable of the digital indicator. The digital indicator can be
screwed in four different positions (
±
90° or
±
180°) depending on the position of
the transmitter.
3. Screw in the housing cover with sight glass.
Figure 23 Connection with plug
WARNING
Devices with the protection type "flameproof enclosure" may only be opened when
the power is off.
6
5
4
7
1 2
3
-
+
I
A
U
H
I
A
Output current
U
H
Auxiliary power
1 = -U
H
2 = +U
H
= Shield