Endress+Hauser Liquicap T FMI21 - Cable Specifications; Performance Characteristics with Installed Electronic Insert; Reference Operating Conditions; Maximum Measured Error

Liquicap T FMI21
Endress+Hauser 7
Cable specifications Use usual commercial two-core or multi-core cable (25 Ω per core).
Cable cross-section (incl. ferrule): max. 2.5 mm
2
!
Note!
Use a screened cable in the event of strong, electromagnetic EMC condition.
Performance characteristics with installed electronic insert
Reference operating
conditions
• Ambient temperature: 23 °C
• Medium temperature: 23 °C
• Medium viscosity: medium must expose probe again (drain off < 2000 cst)
• Atmospheric pressure
• Probe installation: vertical from above
Maximum measured error ≤ 1 % of full scale value (active rod probe)
Repeatability 0.25 % of full scale value (range 0...2000 pF)
Start-up settling time < 2 s (stable measured value after switch-on process)
Influence of ambient
temperature
< 0.01 %/K (–40°C...+70 °C) probe length 1 m
Integration time τ =1 s (fixed)
The integration time affects the speed at which the display and the current output react to changes in the fluid
level.
Factory calibration
L00-FMI21xxx-15-05-xx-en-000
Factory calibration: medium conductivity ≥ 30 µS/cm
Calibration accuracy 100 % max. -5 mm; 0 % max. -5 mm
In an installed state, recalibration is only necessary if
• The probe rods have been shortened
• The 0 % and 100 % value should be adjusted to suit customer specifications
• The electronic insert was changed
100 %
0%
Factory calibration
Recalibration
necessary
Shortening