Endress+Hauser Levelflex M FMP40 Operating Instructions Manual page 93

Levelflex M FMP40 with HART/4...20 mA
Reference operating
conditions
Maximum measured error
Resolution
Reaction time
Influence of ambiente
temperature
Endress + Hauser
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 56.
• 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
The measurements are carried out in accordance with EN 61298-3:
• digital output:
– FMP40
average T : 0.6 mm/10 K, max. ±3.5 mm over the entire temperature range -40 °C...+80 °C
K
2-wire:
• Current output (additional error, in reference to the span of 16 mA):
• Zero point (4 mA)
average T : 0.032 %/10 K, max. 0.35 % over the entire temperature range -40 °C...+80 °C
K
• Span (20 mA)
average T : 0.05 %/10 K, max. 0.5 % over the entire temperature range -40 °C...+80 °C
K
4-wire:
• Current output (additional error, in reference to the span of 16 mA):
• Zero point (4 mA)
average T : 0.02 %/10 K, max. 0.29 % over the entire temperature range -40 °C...+80 °C
K
• Span (20 mA)
average T : 0.06 %/10 K, max. 0.89% over the entire temperature range -40 °C...+80 °C
K
Technical data
93