
Level measuring accuracy
HART PROFIBUS PA or Foundation Fieldbus
Measuring cell
250 mbar (3.63 psi)
≤ (0.5 • r + 0.2) % ≤ 0,7 %
Measuring cell 600 mbar (8.7 psi) ≤ (0.3 • r + 0.2) % ≤ 0,5 %
Measuring cell 1.6 and 5 bar
(23.2 and 72.5 psi)
≤ (0.25 • r + 0.2) % ≤ 0,45 %
● At -40 … -10°C and
+60 … +85°C
(-40 … 14°F and 140 … 185°F)
(double values for 10 < r ≤ 30)
Measuring cell
250 mbar (3.63 psi)
≤ (0.25 • r + 0.15) %/10 K
(≤ (0.25 • r + 0.15) %/18°F)
≤ 0.4 %/10 K (≤ 0.4 %/18°F)
Measuring cell 600 mbar (8.7 psi) ≤ (0.15 • r + 0.15) %/10 K
(≤ (0.15 • r + 0.15) %/18°F)
≤ 0.3 %/10 K (≤ 0.3 %/18°F)
Measuring cell 1.6 and 5 bar
(23.2 and 72.5 psi)
≤ (0.12 • r + 0.15) %/10 K
(≤ (0.12 • r + 0.15) %/18°F)
≤ 0.27 %/10 K (≤ 0.27 %/18°F)
Effect of static pressure
● At the start of scale value
Measuring cell 250 mbar
(0.29 psi)
≤ (0.3 • r) % per nominal pressure ≤ 0.3 % per nominal pressure
Measuring cell 600 mbar (8.7 psi) ≤ (0.15 • r) % per nominal pressure ≤ 0.15 % per nominal pressure
Measuring cell 1.6 and 5 bar
(23.2 and 72.5 psi)
≤ (0.1 • r) % per nominal pressure ≤ 0.1 % per nominal pressure
● On the measuring span ≤ (0.1 • r) % per nominal pressure ≤ 0.1 % per nominal pressure
Influence of mounting position depending on the fill fluid in the mounting flange
Power supply influence In percent per change in voltage
0.005 % per 1 V
Measuring value resolution – 3 • 10
-5
of the rated measuring range
11.5 Operating conditions
Rated conditions for gauge pressure and absolute pressure (from the gauge pressure series)
Installation conditions
Ambient conditions
● Ambient temperature
Note Observe the temperature class in hazardous areas.
Measuring cell with silicon oil
filling
-40 … +85 °C (-40 … +185 °F)
Measuring cell with inert liquid -20 … +85 °C (-4 … +185 °F)
Display -30 … +85 °C (-22 … +185 °F)
Storage temperature -50 … +85 °C (-58 … +185 °F)
● Climate class
Condensation Permitted
Technical data
11.5 Operating conditions
SITRANS P, DS III series with HART
Operating Instructions, 09/2012, A5E00047092-08 183
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