Technical data Levelflex M FMP40 FOUNDATION Fieldbus
98 Endress+Hauser
10 Technical data
10.1 Additional technical data
10.1.1 Input
Measured variable The measured variable is the distance between a reference point (see Fig., → ä 14) and the product
surface. Subject to the input empty distance "E" (see Fig., → ä 54), the level is calculated.
Alternatively, the level can be converted by means of linearisation (32 points) into other variables
(volume, mass).
10.1.2 Output
Output signal • FOUNDATION Fieldbus (H1):
– signal coding: Manchester Bus Powered (MBP)
– data transmission rate: 31.25 KBit/s, voltage mode
Signal on alarm Error information can be accessed via the following interfaces:
• Local display:
– Error symbol (→ ä 42)
– Plain text display
•
Current output, signal on error can be selected (e.g. according to NAMUR recommendation NE43)
• Digital interface
Linearization The linearization function of the Levelflex M allows the conversion of the measured value into any
unit of length or volume and mass or %. Linearization tables for calculating the volume in cylindrical
tanks are preprogrammed. Other tables of up to 32 value pairs can be entered manually or semi-
automatically. The creation of a linearization table with FieldCare is particularly convenient.
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