Endress+Hauser Deltapilot S FMB70, Руководство по функциональной безопасности

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Deltapilot S
Hauser 13
Example of 400 mbar measuring cell.
The "Level Easy Pressure" calibration was performed correctly .
SD213en06
The conditions
➀
,
➁
and
➂
are met. The "Increased security during parameter entry" method can be performed for the
device.
Point
➀
:
The pressure values for SET LRV and SET URV must be within the sensor measuring range.
Point
➁
:
The turndown, which is determined by the difference between the pressure values for SET LRV and SET URV, must not
be larger than the maximum turndown (100:1 at factory).
Point
➂
:
The value for PRESSURE FULL – PRESSURE EMPTY must not fall below the minimum span (1 % of sensor measuring
range).
40 mbar 320 mbar
p
0 mbar 400 mbar
0 m
3.2 m
4 m
0.4 m
H I
20 mA
4 mA
3
1 1
2
Turndown < max. Turndown
FULL PRESS. EMPTY PRESS.
URL SENSOR =
Pressure value
for 20 mA LRL SENSOR =
Pressure value
for 4 mA
Span >
permitted minimum
span
EMPTY
CALIB.
FULL
CALIB.
SET LRV
SET URV