VEGA VEGAMET 391 4 … 20 mA_HART - Manual (Page 53)

53
11 Supplement
VEGAMET 391 • 4 … 20 mA/HART
36032-EN-130701
11 Supplement
11.1 Technical data
General data
Series
Instrument for mounting into front panel, switching cabi-
net or housing
Weight 620 g (1.367 lbs)
Housing materials Valox 357 XU
Connection terminals
Ʋ Type of terminal Pluggable spring-loaded terminal with coding
Ʋ Max. wire cross-section 2.5 mm² (AWG 14)
Voltage supply
Operating voltage
20 … 253 V AC, 50/60 Hz, 20 … 253 V DC
Max. power consumption 7 VA; 3 W
Sensor input
Number of sensors
1 x 4 … 20 mA (HART)
Type of input (selectable)
Ʋ Active input Sensor supply through VEGAMET 391
Ʋ Passive input Sensor has an own power supply
Measured value transmission (switchable with RS232/Ethernet interface option)
Ʋ 4 … 20 mA analogue for 4 … 20 mA sensors
Ʋ HART protocol digital for HART sensors
Deviation
Ʋ Accuracy ±20 µA (0.1 % of 20 mA)
Terminal voltage
Ʋ Non-Ex version 28.5 … 22 V at 4 … 20 mA
Ʋ Ex version 19 … 14.5 V at 4 … 20 mA
Current limitation approx. 26 mA
Detection line break ≤ 3.6 mA
Detection shortcircuit ≥ 21 mA
Adjustment range 4 … 20 mA sensor
Ʋ Empty adjustment 2.4 … 21.6 mA
Ʋ Full adjustment 2.4 … 21.6 mA
Ʋ min. adjustment delta 16 µA
Adjustment range HART sensor
Ʋ Adjustment range ± 10 % of sensor measuring range
Ʋ min. adjustment delta 0.1 % of sensor measuring range
Connection cable to the sensor two-wire screened standard cable
Digital input
Quantity
4 x digital input