Connecting Cables - Siemens SITRANS 7MF1570 Operating Instructions Manual

Protective cap
Figure 3
5

Connecting cables

The transmitter 7MF 1570 for measuring liquid levels (degree of protection IP68 ac-
cording to DIN EN 60 529) is connected to the junction box 7MF 1570-8AA (IP54).
The transmitter cable is connected to the terminals 1 (-), 2 (+) and earth (Figure 4).
The strength cord is clamped between the two screws in the fixture. The vent pipe
must be inside the junction box in connection with the atmosphere.
junction
box
Figure 4
The feed voltage of the transmitter may be within the range from 10 to 36 V DC. The
resistance value for the maximum load depends on the voltage U
by the following equation:
R = ————— (kOhm)
max
SITRANS P, MPS Series
A5E00136035-04
158
Cable sheath 8,3 mm diam. (black, HFFR)
Flexible cable with 0.5 mm
Vent pipe 1 mm diam. (inner diameter)
Protective cap with 4 x 3 mm diam. holes (black, PA)
Transmitter 7MF1570, dimensions
atmospheric pressure
Vent pipe
P70
Transmitter 7MF1570, wiring diaphragm
U - 10 V
B
20 mA
+ (brown)
Cable sheath
L
2
cross-section
Operating Instructions
Vent pipe
Strength cord (white)
- (blue)
Screen
. It is determined
B
21