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49
14 Supplement
VEGAPULS 21 • Two-wire 4 … 20 mA/HART
58351-EN-191014
Bluetooth interface
Bluetooth standard
Bluetooth 5.0 (downward compatible to Bluetooth
4.0 LE)
Max. participants
1
Effective range
12)
max. 25 m (82 ft)
Voltage supply
Operating voltage U
B
12 … 35 V DC
Reverse voltage protection
Integrated
Permissible residual ripple
Ʋ
for 12 V < U
B
< 18 V
≤ 0.7 V
eff
(16 … 400 Hz)
Ʋ
for 18 V < U
B
< 35 V
≤ 1 V
eff
(16 … 400 Hz)
Load resistor
Ʋ
Calculation
(U
B
- U
min
)/0.022 A
Ʋ
Example - with U
B
= 24 V DC
(24 V - 12 V)/0.022 A = 545 Ω
Electrical protective measures
Potential separation
Electronics potential free up to 500 V AC
Protection rating
IP66/IP67 acc. to IEC 60529, Type 4X acc. to UL 50
Altitude above sea level
5000 m (16404 ft)
Protection class
III
Pollution degree
4
12)
Depending on the local conditions