VEGA POINTRAC 31 Foundation Fieldbus - Manual (Page 44)

44
11 Supplement
POINTRAC 31 • Foundation Fieldbus
41779-EN-131119
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
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 ≤ 0.5 %
Deviation with bulk solids The values depend to a great extent on the application.
Binding specifications are thus not possible.
Deviation under EMC influence ≤ 1 %
Ambient conditions
Ambient, storage and transport tempera-
ture
-40 … +60 °C (-40 … +140 °F)
Process conditions
For the process conditions, please also note the specifications 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 3) mechanical vibrations up to 1 g in the frequency range
5 … 200 Hz
3) Tested according to the guidelines of German Lloyd, GL directive 2.