Endress+Hauser Waterpilot FMX167, Руководство по эксплуатации

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Waterpilot FMX167 Electrical connection
Hauser 15
5.1.3 Power consumption, current consumption
5.1.4 Load
The maximum load resistance depends on the supply voltage (U) and must be determined
individually for each current loop. See formulae and diagrams for "FMX167" and
"Temperature head transmitter".
The total resistance resulting from the resistances of the connected devices, the connecting
cable and, where applicable, the resistance of the extension cable may not exceed the load
resistance value.
FMX167 Pt100 TMT181 temperature head
transmitter
Power consumption

0.675 W at 30 V DC

0.675 W at 30 V DC

0.875 W at 35 V DC
Current
consumption Max.

22.5 mA
Min.

3.5 mA
Max.

22.5 mA
Min.

3.5 mA
Pt100:

0.6 mA
Max.

25 mA
Min.

3.5 mA
FMX167 Temperature head transmitter
A0018755-EN A0018756-EN
– 2 0.09
L – R
U – 10 V
0.0225 A
W
m
£
R
Lmax
add
– R
U – 8 V
0.025 A
£ R
Lmax
add
R
Lmax
= Max. load resistance [

]
R
add
= Additional resistances such as resistance of evaluation unit and/or display unit, cable resistance [

]
U = Supply voltage [V]
L = Simple length of extension cable [m] (cable resistance per wire

0.09

m)
A0018667
FMX167 load chart for estimating the load resistance.
Additional resistances, such as the resistance of the extension
cable, have to be subtracted from the value calculated as shown
in the equation.
A0018668
Temperature head transmitter load chart for estimating the
load resistance. Additional resistances have to be subtracted
from the value calculated as shown in the equation.
888
444
666
222
30
20
25 10 15
R
[ ]
W
U
[ ]
V 30 20 25 15 8 35 10
1080
880
480
280
680
80
R
[ ]
W
U
[ ]
V