Vega MINITRAC 31 Installation & Maintenance Instructions

75
11 Supplement
MINITRAC 31 • 4 … 20 mA/HART - four-wire
40447-EN-130430
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
Transistor output
Output Floating transistor output, permanently shortcircuit-proof
Load current
< 400 mA
Voltageloss <1V
Switching voltage <55VDC
Blocking current < 10 µA
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 ≤0.1%
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tothedigitalmeasuredvalue
Temperature drift - HART signal ±0.16 %/10 K relating to the max. measuring range
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 by ana-
logue/digital conversion
<±15 µA
Deviation on the current output due to
strong, high frequency electromagnetic
interference acc. to EN 61326
< ±150 µA
Characteristics and performance data
Step response time
5)
≤5s(withdamping1s)
5)
Time span after a sudden measuring distance change by max. 0.5 m in liquid applications, max 2 m with bulk
solidsapplications,untiltheoutputsignalhastakenforthersttime90%ofthenalvalue(IEC61298-2).

Vega MINITRAC 31 Specifications

General

Brand	Vega
Model	MINITRAC 31
Category	Accessories
Language	English