Commissioning Waterpilot FMX21
54 Endress+Hauser
Description
3 Set the value for "Full calib." with the acting
pressure for the level, e.g. 25 %.
Menu path: Setup → Extended setup → Level →
Full calib.
4 The values for the pressure when the vessel is
full or empty are measured automatically
during adjustment. The transmitter
automatically sets the pressure values that are
most suitable for "Empty calib." and "Full calib."
as the minimum and maximum pressure which
generates the output current. For this reason,
the correct upper-range value (URV) and the
correct lower-range value (LRV) must be set.
If the process uses a medium other than that on which the calibration was based,
the new density must be specified in the "Process density" parameter. In this
case, you have to enter the various densities via the following menu path:
• Setup → Extended setup → Level → Adjust density (034) e.g. 1.0 kg/l for water)
• Setup → Extended setup → Level → Process density (035) e.g. 0.8 kg/l for oil)
9.10.8 Level measurement with absolute pressure probe and external
pressure signal (electrical differential pressure)
Example:
In this example, a Waterpilot FMX21 and a Cerabar M device (each with an absolute
pressure measuring cell) are connected via the common communication bus. The level can
thus be measured in a deep well, with simultaneous compensation for the effect of
atmospheric pressure.
To Next Page
Loading...
