EN
14365216.02 08/2020 EN/DE
Operating instructions magnetostrictive level transmitter, models FLM-CA, FLM-CM
15
The maximum cable length is calculated as follows:
L = Cable length in m
U = Supply voltage V (with negative tolerance value -5 %)
U
min
= Minimum supply voltage V = 8 V
I
max
= highest current supply A = 0.0215 A
R
B
= Load
R
Q
= Cable resistance of copper cable (per m) in Ω/m with cable cross-section Q in mm²
Example:
Supply voltage: 12 V (±5 %)
Supply voltage U = 11.4 V (12 V - 5 %)
Minimum supply voltage U
min
= 8 V
Highest current supply I
max
= 0.0215 A
Load R
B
= 86.8 Ω
Cable resisatance R
Q
= 0.0356 Ω/m with cable cross-section Q = 0.5 mm²
A cable with a forward and return line (2-wire) can therefore be a maximum of 1,000 m
long.
5. Commissioning, operation
