Endress+Hauser Levelflex M FMP43, Operating Instructions Manual

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Technical data Levelflex M FMP43 with PROFIBUS PA
94 Hauser
10 Technical data
10.1 Additional technical data
10.1.1 Input
Measured variable The measured variable is the distance between the reference point (see Fig on
→
ä
14) and the
product surface.
The level is calculated subject to the empty distance entered (E, see Fig. on
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ä
102).
Alternatively, the level can be converted by means of linearization (32 points) to other variables
(volume, mass).
10.1.2 Output
Output signal • PROFIBUS PA
Signal on alarm Error information can be accessed via the following interfaces:
• Local display:
– Error symbol (
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ä
34)
– Plain text display
• Current output, failsafe mode can be selected (e.g. according to NAMUR recommendation
NE 43).
• Digital interface
Linearization The Levelflex M linearization function enables conversion of the measured value to any desired
length or volume unit, mass or %. Linearization tables for volume calculation in cylindrical tanks are
preprogrammed. Any other tables with up to 32 value pairs can be input manually or semi-
automatically. The creation of a linearization table with the ToF Tool or FieldCare is particularly
convenient.
10.1.3 Performance characteristics
Reference operating
conditions • Temperature = +20 °C ± 5 °C
• Pressure = 1013 mbar abs. ±20 mbar
• Relative humidity (air) = 65 % ±20%
• Metallic tank, no internals, distance to tank wall > 500 mm
• Medium: water (DK > 7), respectively oil (DK = 2)
• Probe length > 500 mm
Maximum measured error Is in Function group "basic setup" (00) starting from
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ä
58.
Resolution • Digital: 1 mm
Reaction time The reaction time depends on the configuration.
Shortest time:
• 2-wire electronics: 1 s
Influence of ambient
temperature The measurements are carried out in accordance with EN 61298-3:
• Digital output (HART, PROFIBUS PA, FOUNDATION Fieldbus):
– average T
K
: 0.6 mm/10 K, max. ±3.5 mm over the entire temperature range -40 °C to +80 °C