Vega POINTRAC 31 8_16 mA_HART - four-wire With SIL qual Bedienungsanleitung PDF herunterladen (Seite 49)

11 Supplement

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

43388-EN-131119

Relay output

Output Relayoutput(SPDT),oatingspdt

Switching voltage

Ʋ Min. 10mV

Ʋ Max. 253VAC,253VDC

Switching current

Ʋ Min. 10 µA

Ʋ Max. 3 A AC, 1 A DC

Breaking capacity

Ʋ Min. 50 mW

Ʋ Max. 750VAAC,40WDC

If inductive loads or stronger currents are switched

through, the gold plating on the relay contact surface will

be permanently damaged. The contact is then no longer

suitable for switching low-level signal circuits.

Contact material (relay contacts) AgNi or AgSnO and Au plated

Accuracy (according to DIN EN 60770-1)

Process reference conditions according to DIN EN 61298-1

Ʋ Temperature +18…+30°C(+64…+86°F)

Ʋ Relative humidity 45 … 75 %

Ʋ Air pressure 860 … 1060 mbar/86 … 106 kPa (12.5 … 15.4 psig)

Repeatability ≤0.5%

Deviation with bulk solids The values depend to a great extent on the application.

Bindingspecicationsarethusnotpossible.

DeviationunderEMCinuence ≤1%

Variablesinuencingmeasurementaccuracy

Specicationsapplyalsotothecurrentoutput

Temperature drift - Current output ±0.03 %/10 K relating to the 16 mA span max. ±0.3 %

Deviation on the current output through

analogue/digital conversion

<±15 µA

Deviation on the current output due to

strong, high frequency electromagnetic

interference acc. to EN 61326

<±150 µA

Ambient conditions

Ambient, storage and transport tempera-

ture

-40…+60°C(-40…+140°F)

Process conditions

Fortheprocessconditions,pleasealsonotethespecicationsonthetypelabel.Thelowervalue

always applies.

Process pressure Unpressurized

1 2 ... 44 45 46 47 48 49 50 51 52 53 54 ... 59 60

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