Endress+Hauser Liquicap M FMI51 HART - Performance Characteristics

Technical data Liquicap M FMI51 HART
86 Endress+Hauser
12.4 Performance characteristics
12.4.1 Reference operating conditions
Room temperature:
+20 °C (+68 °F) ±5 °C (±8 °F)
Span:
• standard measuring range
5 to 2 000 pF
• extended measuring range
5 to 4 000 pF
• span for reference - corresponds to approximately 1 m (3.3 ft) probe length
5 to 4 000 pF
12.4.2 Maximum measured error
Non-repeatability (reproducibility) as per DIN 61298-2:
maximum ±0.1 %
Non-linearity for limit point setting (linearity) as per DIN 61298-2:
maximum ±0.5 %
12.4.3 Influence of ambient temperature
Electronic insert
< 0.06 %/10 K related to the full-scale value
Separate housing
change in capacitance of connecting cable 0.015 pF / m per K
12.4.4 Influence of process pressure
In the case of fully insulated probes in conductive liquids:
< 10.0 % related to the full scale value
12.4.5 Switch-on behavior
14 s, the stable measured value after the switch-on procedure, a start-up in safe status
22 mA
12.4.6 Measured value reaction time
Operating mode: t
1
≤ 0.3 s
SIL operating mode: t
1
≤ 0.5 s
63
100
τ
t
1
%
A0040622
τ Time constant
t
1
Dead time