Endress+Hauser Waterpilot FMX21, Operating Instructions Manual

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Waterpilot FMX21 Commissioning
Hauser 47
4. Select the "Set URV" parameter. Enter the value for the "Set URV" parameter (here
300 mbar (4.5 psi)) and confirm. This pressure value is assigned to the upper current
value (20 mA).
 Menu path: Setup → Extended setup → Current output → Set URV
The measuring range is configured for 0 to +300 mbar (0 to 4.5 psi).
9.9 Configuring level measurement
9.9.1 Information on level measurement
You have a choice of two methods for calculating the level: "In pressure" and "In
height". The table in the "Overview of level measurement" section that follows
provides you with an overview of these two measuring tasks.
• The limit values are not checked, i.e. the values entered must be appropriate for the
sensor module and the measuring task for the device to be able to measure
correctly.
• Customer-specific units are not possible.
• The values entered for "Empty calib./Full calib.", "Empty pressure/Full pressure",
"Empty height/Full height" and "Set LRV/Set URV" must be at least 1 % apart. The
value will be rejected, and a message displayed, if the values are too close together.
9.9.2 Overview of level measurement
"In pressure" level selection
Calibration is performed by entering two pressure/level value pairs.
• Via the "Output unit" parameter: select %, level, volume or mass units
• Description:
• Calibration with reference pressure (wet calibration) →  49
• Calibration without reference pressure (dry calibration) →  47
• The measured value display and the "Level before lin" parameter display the measured
value.
"In height" level selection
Calibration is performed by entering the density and two height/level value pairs.
• Via the "Output unit" parameter: select %, level, volume or mass units
• Description:
• Calibration with reference pressure (wet calibration) →  53
• Calibration without reference pressure (dry calibration) →  51
• The measured value display and the "Level before lin" parameter display the measured
value.
9.9.3 "In pressure" level selection Calibration without reference
pressure (dry calibration)
Example:
In this example, the volume in a tank should be measured in liters. The maximum volume
of 1 000 l (264 gal) corresponds to a pressure of 400 mbar (6 psi).
The minimum volume of 0 liters corresponds to a pressure of 0 mbar since the process
membrane of the probe is at the start of the level measuring range.