Endress+Hauser Proline Prosonic Flow B 200 - Page 26

Electrical connection Proline Prosonic Flow B 200 HART
26 Endress+Hauser
Order code for "Output"
Minimum
terminal voltage
Maximum
terminal voltage
Option C : 4-20 mA HART + 4-20 mA analog • For 4 mA: ≥ DC 16 V
• For 20 mA: ≥ DC 12 V
DC 30 V
Option D: 4-20 mA HART, pulse/frequency/switch
output, 4-20 mA current input
3)
≥ DC 12 V
DC 35 V
1) External supply voltage of the power supply unit with load.
2) For device versions with SD03 local display: The terminal voltage must be increased by DC 2 V if
backlighting is used.
3) Voltage drop 2.2 to 3 V for 3.59 to 22 mA
Load
Load for current output: 0 to 500 Ω, depending on the external supply voltage of the power
supply unit
Calculation of the maximum load
Depending on the supply voltage of the power supply unit (U
S
), the maximum load (R
B
)
including line resistance must be observed to ensure adequate terminal voltage at the
device. In doing so, observe the minimum terminal voltage
• For U
S
= 16.0 to 16.8 V: R
B
≤ (U
S
- 16.0 V): 0.0036 A
• For U
S
= 16.8 to 23.0 V: R
B
≤ (U
S
- 12.0 V): 0.022 A
• For U
S
= 23.0 to 30.0 V: R
B
≤ 500 Ω
0
100
200
300
400
500
14
16 18 20
22 24
26 28 30 32
U [V]
s
R [ ]
b
W
600
220
16.8 23
34 36
1.1 1.21
35
A0018972
1 Operating range
1.1 For order code for "Output", option A "4-20 mA HART"/option B "4-20 mA HART, pulse/frequency/switch
output" with Ex i and option C "4-20 mA HART + 4-20 mA analog"
1.2 For order code for "Output", option A "4-20 mA HART"/option B "4-20 mA HART, pulse/frequency/switch
output" with non-Ex and Ex d
Sample calculation
Supply voltage of the power supply unit: U
S
= 17.5 V
Maximum load: R
B
≤ (17.5 V - 12.0 V): 0.022 A = 250 Ω
7.1.5 Preparing the measuring device
1. Remove dummy plug if present.