Endress+Hauser Waterpilot FMX21, Руководство по эксплуатации

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Waterpilot FMX21 Technical data
Hauser 133
R
Lmax
– 2 0.09
•
•
L – R
U – 10.5 V
23 mA
W
m
£
413
630
195
1065
35
20 25 10.5 15
847
30
R
[ ] W
U
[ ]
V
– R
U – 11.5 V
0.023 A
£ R
Lmax
370
587
152
1022
35 20 25 11.5 15
804
30
R
[ ]
W
U
[ ]
V
A B
add add
A0026500-EN
A Load diagram for device 4 to 20 mA HART for an approximate calculation of 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.
B Load diagram for TMT72 temperature head transmitter for estimating the load resistance. Additional
resistances must be subtracted from the value calculated as shown in the equation
R
Lmax
Max. load resistance [Ω]
R
add
Additional resistances such as resistance of evaluating device and/or display unit, cable resistance [Ω]
U Supply voltage [V]
L Basic length of extension cable [m] (cable resistance per wire ≤0.09 Ω/m
• When using the measuring device in hazardous areas, installation must comply
with the corresponding national standards and regulations and the Safety
Instructions or Installation or Control Drawings (XA).
• When operating via a handheld terminal or via a PC with an operating program, a
minimum communication resistance of 250 Ω must be taken into account.