Technical data Micropilot S FMR533 4 to 20 mA HART
78 Endress+Hauser
10 Technical data
10.1 Additional technical data
10.1.1 Application
The Micropilot S is used for higly accurate level measurement in storage tanks and can be applied
in custody transfer applications. It meets the relevant requirements according to OIML R85 and
API 3.1B. The FMR533 with parabolic antenna is excellently suited for free space applications up
to 40 m (131 ft).
10.1.2 Input
Measured variable The measured variable is the distance between a reference point GRH (mounting flange) and a
reflective surface (e.g. product surface). The measured value and all parameters are displayed using
either metrical SI-units or US/UK-units (inch, ft, …). The level is calculated based on the tank
height entered. In order to compensate for non-linear effects like movement of the tank roof, an
additional correction table (diptable) can be entered.
Measuring range "Measuring range", → ä 14.
10.1.3 Output
Output signal 4 to 20 mA (invertible) with HART protocol (e.g. for multidrop connection to the Tank Side Monitor
NRF 590):
This version can be operated via the PC operating software FieldCare. The device supports both
point-to-point and multidrop operation. For measurements with mm accuracy, the measured value
must be transmitted via the HART protocol in order to ensure the required accuracy.
Signal on alarm Error information can be accessed via the following interfaces::
• Local display:
– Error symbol (→ ä 31)
– Plain text display
– LED’s: red LED continuously on = alarm, red LED flashes = warning
• Current output
• Digital interface
Galvanic isolation 500 V between
• power supply and ground
• power supply and signal
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