VEGA VEGATRENN 544 Ex - Manual (Page 5)

VEGATRENN 544 Ex 5
1.4 Technical data
Power supply
Operating voltage U
nenn
= 24 V AC (20 … 53 V), 50/60 Hz
= 24 V DC (20 … 72 V)
Power consumption appr. 7 VA or appr. 5 W
Measuring data input
Number 1 input
Kind of input active two-wire input, analogue
Range 4 … 20 mA
Sensor hydrostatic pressure transmitter,
process pressure transmitter,
differential pressure transmitter
Voltage at 4 mA ca. 18 V DC, at 20 mA appr. 15 V DC
Current limitation at appr. 26 mA, shortcircuit proof
Detection line break < 2 mA
Detection shortcircuit > 23 mA
Connection line 2-wire (standard line)
Resistance per conductor max. 35 Ω
Resolution 1 µ A
Linearity error 0,025 % at 4 … 20 mA
Temperature error 0,04 %/10 K at 4 … 20 mA
Measuring data input, Ex-technical data
Classification [EEx ia] IIC, [EEx ia] IIB, [EEx ib] IIC or [EEx ib] IIB
Max. values
- Voltage
U
O
= 20 V
- Current I
O
= 128 mA
- Power P
O
= 640 mW
Characteristics linear
Effective inner inductance L
i
negligible
Effective inner capacitance C
i
negligible
EEx ia IIC EEx ia IIB EEx ib IIC EEx ib IIB
Max. permissible outer inductance L
O
(mH) 0,5 1 1,5 2 2 9
Max. permissible outer capacitance C
O
(nF) 97 78 68 486 200 1000
The intrinsically safe circuits are reliably separated from the not-intrinsically safe circuits up to a peak value of
the nominal voltage of 375 V.
The max. voltage on the not-intrinsically safe circuits must not exceed 250 V
eff
in case of failure.
Current output
Number 1 output
Function analogue output of processing results
Range 0/4 … 20 mA
Load max. 500 Ω
Resolution 0,05 % of range
Linearity error 0,05 % of range
Temperature error 0,05 %/10 k of range
Product description
>>