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

Technical data

Measured variable
Output signal
Signal on alarm
Linearization
Reference operating
conditions
Maximum measured error
Resolution
Reaction time
80
10 Technical data
10.1

Additional technical data

10.1.1 Input
The measured variable is the distance between a reference point (see Fig. on → ä 14) and the
product surface.
Subject to the input empty distance (E, see Fig. on → ä 90), 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...20 mA with HART protocol
Error information can be accessed via the following interfaces:
• Local display:
– Error symbol (→ ä 35)
– Plain text display
• Current output, signal on error can be selected (e.g. according to NAMUR recommendation NE
43).
• Digital interface
The Levelflex M linearisation function enables conversion of the measured value into any desired
length or volume units and mass or %. Linearisation tables for volume calculation in cylindrical tanks
are pre-programmed. Any other tables from up to 32 value pairs can be input manually or semi-
automatically.
The creation of a linearisation table with the ToF Tool or 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) starting from → ä 45.
• Digital / analog in % 4...20 mA
• 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
Levelflex M FMP45 with HART/4...20 mA
Endress + Hauser