VEGA POINTRAC 31 8_16 mA_HART - four-wire With SIL qualification - Manual (Page 48)

48
11 Supplement
POINTRAC 31 • 8/16 mA/HART - four-wire
43388-EN-131119
L
Fig. 18: Data of the input variable
L Measuring range (range in which the switching point must lie)
Measuring range 152 mm (6 in) or 304 mm (12 in)
Analogue input
Ʋ Input type 4 … 20 mA, passive
Ʋ Internal load 250 Ω
Switching input
Ʋ Type of input - Open Collector 10 mA
Ʋ Type of input - Relay contact 100 mA
Output variable
Output signals
8/16 mA/HART - active; 8/16 mA/HART - Multidrop
Terminal voltage passive 9 … 30 V DC
Shortcircuit protection Available
Potential separation Available
Failure signal current output (adjustable) 22 mA, < 3.6 mA
Max. output current
22 mA
Starting current ≤ 3.6 mA
Load
Ʋ 8/16 mA/HART - active < 500 Ω
Ʋ 8/16 mA/HART - intrinsically safe < 300 Ω
Damping (63 % of the input variable) Is calculated automatically by the instrument
HART output values
Ʋ PV (Primary Value) Switching status
Ʋ SV (Secondary Value) Electronics temperature