VEGA VEGAMET 381 Ex - Manual (Page 31)

31
9 Supplement
VEGAMET 381 Ex • 4 … 20 mA signal conditioning instrument
30418-01-131025
9 Supplement
9.1 Technical data
General data
Series
Instrument for mounting into front panel, switching cabi-
net or housing
Weight 400 g (0.882 lbs)
Housing material plastic ABS/POM
Connection terminals
Ʋ Type of terminal Screw terminal
Ʋ Max. wire cross-section 1.5 mm² (AWG 16)
Voltage supply
Operating voltage
20 … 253 V AC, 50/60 Hz, 20 … 253 V DC
Max. power consumption 12.4 VA, 4 W
Sensor input
Number of sensors
1 x 4 … 20 mA
Type of input (switchable)
Ʋ mode active Sensor is powered by VEGAMET 381 Ex
Ʋ mode passive Sensor has an own power supply
Measured value transmission 4 … 20 mA
Deviation
Ʋ Accuracy ±20 µA (0.1 % of 20 mA)
Terminal voltage mode active 20 … 15 V at 4 … 20 mA
Current limitation mode active 30 mA
Internal resistance mode passive < 250 Ω
Detection line break ≤ 3.6 mA
Detection shortcircuit ≥ 21 mA
Adjustment range
Ʋ Empty adjustment 3.8 … 20.2 mA
Ʋ Full adjustment 4.1 … 20.5 mA
Ʋ min. adjustment delta 300 µA
Connection cable to the sensor two-wire standard cable (screening recommended)
Relay outputs
Quantity
2 x operating relay, 1 x fail safe relay
Contact Floating spdt
Contact material AG NI 0.15 hard gold-plated
Switching voltage min. 10 mV DC, max. 250 V AC/DC