Vega POINTRAC 31 8_16 mA_HART - four-wire Bedienungsanleitung PDF herunterladen (Seite 46)

11 Supplement

POINTRAC 31 • 8/16 mA/HART - four-wire

39411-EN-131119

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

1 2 ... 41 42 43 44 45 46 47 48 49 50 51 ... 55 56

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Vega POINTRAC 31 8_16 mA_HART - four-wire Bedienungsanleitung Seite 46