VEGA VEGABAR 54 4 … 20 mA - Manual (Page 59)

59
10 Supplement
VEGABAR 54 • 4 … 20 mA
36725-EN-130321
0,15 %
-0,15 %
-40°C -20°C
20°C
40°C 60°C 80°C
Fig. 20: Thermal change, current output
Long-term stability (according to DIN 16086 and IEC 60770-1)
Applies to digital HART interface as well as to analogue current output 4 … 20 mA under refer-
ence conditions. Specifications refer to the set span. Turn down (TD) is the relation nominal meas-
uring range/set span.
Long-term drift of the zero signal:
Ʋ For one year < 0.05 % x TD
Ʋ For five years < 0.1 % x TD
Ʋ For ten years < 0.2 % x TD
Ambient conditions
Ambient, storage and transport temperature
Ʋ Standard version -40 … +80 °C (-40 … +176 °F)
Ʋ Versions IP 66/IP 68 (1 bar) and IP 68
(25 bar), connection cable PUR
-20 … +80 °C (-4 … +176 °F)
Ʋ Version IP 66/IP 68 (1 bar), connec-
tion cable PE
-20 … +60 °C (-4 … +140 °F)
Process conditions
The specifications of the pressure stage and product temperature are used as an overview. The
specifications on the type label are applicable.
Pressure stage, process fitting
Ʋ Thread 316L PN 60
Ʋ Thread 316L 1" for ball valve fitting PN 40
Ʋ PMC 316L PN 10
Ʋ Flange 316L PN 40
Product temperature depending on the measuring cell seal 14)
Measuring cell seal Product temperature
FKM (VP2/A) -20 … +120 °C (-4 … +248 °F)
EPDM (A+P 75.5/KW75F) -40 … +120 °C (-40 … +248 °F)
FFKM (Kalrez 6375) -20 … +120 °C (-4 … +248 °F)
FFKM (Perlast G75S) -15 … +120 °C (-4 … +248 °F)
14) With process fitting PVDF, max. 100 °C (212 °F).