VEGA VEGAWELL 72 4 … 20 mA_HART PT 100 - Manual (Page 35)

Deviation determined according to the limit point method according to IEC 60770 7 )
A pplies to digital HART interface as well as to analogue current output 4 … 20 mA.
S
pecifications refer to the set span. Turn down (TD) is the relation nominal measuring
range/set span.
D
eviation with version < 0.25 %
-
T urn down 1 : 1 up to 5 : 1 < 0.25 %
-
T urn down up to 10 : 1 < 0.25 % x TD
D eviation with version < 0.1 %
-
T
urn down 1 : 1 up to 5 : 1 < 0.1 %
-
T
urn down up to 10 : 1 < 0.02 % x TD
Influence of the product or ambient temperature
A
pplies to digital HART interface as well as to analogue current output 4 … 20 mA.
S pecifications refer to the set span. Turn down (TD) is the relation nominal measuring
range/set span.
Average temperature coefficient of the zero signal
I
n the compensated temperature range of 0 … +80 °C (+32 … +176 °F), reference
temperature 20 °C (68 °F).
A verage temperature coefficient of the zero signal
-
T urn down 1 : 1 < 0.15 %/10 K
-
T urn down up to 5 : 1 < 0.2 %/10 K
-
T
urn down up to 10 : 1 < 0.25 %/10 K
O
utside the compensated temperature range:
A verage temperature coefficient of the zero signal
-
T
urn down 1 : 1 typ. < 0.15 %/10 K
Thermal change, current output
A pplies also to the analogue 4 … 20 mA current output and refers to the set span.
T
hermal change, current output < 0.15 % at -40 … +80 °C (-40 … +176 °F)
Long-term stability (similar to DIN 16086, DINV 19259-1 and IEC 60770-1)
A pplies to digital HART interface as well as to analogue current output 4 … 20 mA.
S
pecifications refer to the set span. Turn down (TD) is the relation nominal measuring
range/set span.
L
ong-term drift of the zero signal < (0.1 % x TD)/year
7) I ncl. non-linearity, hysteresis and non-repeatability.
VEGAWELL 72 • 4 … 20 mA/HART PT 35
9 S upplement
34360
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EN
-080806