User guide

73
11 Supplement
MINITRAC 31 • Foundation Fieldbus
41782-EN-131119
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%
Characteristics and performance data
Step response time
5)
≤5s(withdamping1s)
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
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1ginthefrequencyrange
5…200Hz
Electromechanical data - version IP 66/IP 67
Cable entry
Ʋ M20 x 1.5 2 x cable gland M20 x 1.5 (cable: ø 6 … 12 mm), 4 x
blind plug M20 x 1.5
Included: 1 x cable gland M20 x 1.5
Ʋ ½ NPT 5 x closing cap (red) ½ NPT
Included: 3 x cable gland ½ NPT (cable: ø 6 … 12 mm),
4 x blind plug ½ NPT
Spring-loadedterminalsforwirecross-section
Ʋ Massivewire,cord 0.2 … 2.5 mm² (AWG 24 … 14)
Ʋ Strandedwirewithendsleeve 0.2 … 1.5 mm² (AWG 24 … 16)
Display and adjustment module
Display element Displaywithbacklight
Measured value indication
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.