Vega VEGABAR 87 Operating Instructions Manual page 68

11 Supplement
Sensor version
4 ... 20 mA/HART
Modbus
Profibus PA, Foundation Fieldbus
Interface to the Secondary sensor
Data transmission
Configuration, connection cable
Max. cable length
Integrated clock
Date format
Time format
Time zone, factory setting
Max. rate deviation
Additional output parameter - Electronics temperature
Range
Resolution
Deviation
Availability of the temperature values
Ʋ Indication
Ʋ Output
Voltage supply
Operating voltage U
Operating voltage U
switched on
Reverse voltage protection
Permissible residual ripple
Ʋ for U 12 V DC (9.6 V < U
N
Ʋ for U 24 V DC (18 V < U
N
Load resistor
Ʋ Calculation
Ʋ Example - with U
B
Voltage supply - sensor with integrated PLICSMOBILE 81
Operating voltage
13)
When the instrument is powered by an external voltage supply, make sure the voltage supply unit has a suf-
13)
ficient current carrying capacity. With a voltage supply < 9.6 V, current peaks of up to 2 A must be expected.
68
Cable length
B
with lighting
B
< 14 V)
B
< 35 V)
B
= 24 V DC
Configuration, connection cable
Standard cable
50 m
25 m
Digital (I²C-Bus)
4-wire, shielded
25 m
Day.Month.Year
12 h/24 h
CET
10.5 min/year
-40 ... +85 °C (-40 ... +185 °F)
< 0.1 K
± 3 K
Via the display and adjustment module
Via the respective output signal
9.6 ... 35 V DC
16 ... 35 V DC
Integrated
≤ 0.7 V (16 ... 400 Hz)
eff
≤ 1.0 V (16 ... 400 Hz)
eff
(U - U )/0.022 A
B min
(24 V - 9.6 V)/0.022 A = 655 Ω
9.6 ... 32 V DC
Shielded
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VEGABAR 87 • 4 ... 20 mA/HART
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