Vega POINTRAC 31 Operating Instructions Manual page 46

11 Supplement
Ʋ Min.
Ʋ Max.
Breaking capacity
Ʋ Min.
Ʋ Max.
Contact material (relay contacts)
Transistor output
Output
Load current
Voltage loss
Switching voltage
Blocking current
Accuracy (according to DIN EN 60770-1)
Process reference conditions according to DIN EN 61298-1
Ʋ Temperature
Ʋ Relative humidity
Ʋ Air pressure
Repeatability
Deviation with bulk solids
Deviation under EMC influence
Variables influencing measurement accuracy
Specifications apply to the digital measured value
Temperature drift - Digital output
Additional deviation through electromag-
netic interference acc. to EN 61326
Specifications apply also to the current output
Temperature drift - Current output
Deviation on the current output by ana-
logue/digital conversion
Additional deviation through electromag-
netic interference acc. to EN 61326
Ambient conditions
Ambient, storage and transport tempera-
ture
46
10 µA
3 A AC, 1 A DC
50 mW
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.
AgNi or AgSnO and Au plated
Floating transistor output, permanently shortcircuit-proof
< 400 mA
< 1 V
< 55 V DC
< 10 µA
+18 ... +30 °C (+64 ... +86 °F)
45 ... 75 %
860 ... 1060 mbar/86 ... 106 kPa (12.5 ... 15.4 psig)
≤ 0.5 %
The values depend to a great extent on the application.
Binding specifications are thus not possible.
≤ 1 %
±3 mm/10 K relating to the max. measuring range or
max. 10 mm
<±50 mm
±0.03 %/10 K relating to the 16 mA span max. ±0.3 %
<±15 µA
<±150 µA
-40 ... +60 °C (-40 ... +140 °F)
POINTRAC 31 • 8/16 mA/HART - four-wire