Technical Data; Additional Technical Data - Endress+Hauser Levelflex M FMP45 Operating Instructions Manual

Levelflex M FMP45 4 to 20 mA HART
Measured variable
Output signal
Signal on alarm
Linearization
Reference operating
conditions
Maximum measured error
Resolution
Reaction time
Endress+Hauser
10

Technical data

10.1

Additional technical data

10.1.1 Input
The measured variable is the distance between a reference point (see Fig., see Page 12) and the
product surface. Subject to the input empty distance "E", 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
4 to 20 mA (invertible) with HART protocol
Error information can be accessed via the following interfaces:
• Local display:
– Error symbol (see Page 33)
– Plain text display
• Current output, signal on error can be selected (e.g. according to NAMUR recommendation
NE43)
• Digital interface
The linearization function of the Levelflex M allows the conversion of the measured value into any
unit of length or volume units and mass or %. Linearization tables for volume calculation in
cylindrical tanks are preprogrammed. Any other tables from up to 32 value pairs can be entered
manually or semi-automatically. The creation of a linearization table with FieldCare is particularly
convenient.
10.1.3 Performance characteristics
• Temperature = +20 °C (68 °F) ±5 °C (9 °F)
• Pressure = 1013 mbar abs. (14.7 psia) ±20 mbar (0.3 psi)
• Humidity = 65 % ±20 %
• Reflection factor ≥ 0.8 (surface of the water for coax probe, metal plate for rod and rope probe
with min. 1 m ∅)
• Flange for rod or rope probe ≥ 30 cm ∅
• Distance to obstructions ≥ 1 m
Is in Function group "basic setup" (00), Page 43.
• Digital: 1 mm
• Analog: 0.03 % of the measuring range
The reaction time is dependent on the configuration.
Shortest time:
• 2-wire electronics: 1 s
• 4-wire electronics: 0.7 s
Technical data
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