Vega MINITRAC 31 - Page 77

77
11 Supplement
MINITRAC 31 • Foundation Fieldbus
41782-EN-211203
Ʋ Max. Standard:750VAAC,40WDC(atU<40VDC)
USA,Canada:750VAAC
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AgSnO2eachwith3µmgoldplating
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
Measurement 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)
Non-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%
Characteristics and performance data
Step response time
5)
≤5s(withdamping1s)
Ambient conditions
Storage and transport temperature -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
Process temperature (measured on the
detectortube)
-40…+60°C(-40…+140°F)
Withtemperaturesofmorethan60°Cwerecommend
theuseofwatercooling
Vibrationresistance
6)
mechanical vibrations up to 5 g in the frequency range
5…200Hz
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).
6)
Tested according to the guidelines of German Lloyd, GL directive 2.