Description
VEGA CONTROLS VEGATRENN 149A Ex
Function:Â The Ex separator is used for intrinsically safe powering of Ex approved 4 20 mA/HART® sensors. The instrument creates a galvanic separation between sensor circuit and processing circuit. enabling the Ex and non-Ex areas to be separated safely and reliably.
VEGATRENN 149A Ex can also be used as a simple power supply for 4 20 mA sensors in non-Ex areas.
Application:Â VEGATRENN 149A Ex is implemented in all areas of industry with Ex applications.
Technical:
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| Series | mounting on carrier rail 35 x 7.5 according to EN 50022 |
| Terminals | coded, pluggable screw terminals,max. wire cross-section 2.5 mm² |
| Protection | IP 20 |
| Operating voltage | 20 to 253 V AC, 50/60 Hz, 20 to 253 V DC |
| Power consumption | max. 2,4 W |
| Ambient temperature | -20 to +50 °C |
| Approval | ATEX II (1) G D [EEx ia] IIC |
| Sensor circuit, Supply voltage | 16,7 V ±0,2 V (bei 20 mA) |
| Sensor circuit, Open-circuit voltage | 26 V ±5 % |
| Sensor circuit, Short circuit current | ? 32 mA |
| Sensor circuit, Internal resistance | 328 Ohm |
| Processing circuit, number | 1 |
| Processing circuit, Open-circuit voltage | 24 V, ±10 % |
| Processing circuit, galvanic separation | to all other circuits |
| Max. load (load resistor) without communication resistor | 0 to 700 Ohm |
| Max. load (load resistor) with communication resistor | 0 to 450 Ohm |
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