Liquiphant FTL31
Endress+Hauser 11
Performance characteristics
Reference operating
conditions
Ambient temperature: +25 °C (+77 °F)
Process pressure: 1 bar (14.5 psi)
Fluid: Water (density: approx. 1 g/cm³, viscosity 1 mm
2
/s)
Medium temperature: 25 °C (77 °F)
Density setting: > 0.7 g/cm³
Switching time delay: Standard (0.5 s, 1 s)
Switch point
13 mm (0.51 in)±1 mm
Hysteresis
max. 3 mm (0.12 in)
Non-repeatability
±1 mm (0.04 in) in accordance with DIN 61298-2
Influence of ambient
temperature
Negligible
Influence of medium
temperature
–25 µm (984 µin)/°C
Influence of medium
pressure
–20 µm (787 µin)/bar
Switching delay
• 0.5 s when tuning fork is covered
• 1.0 s when tuning fork is uncovered
• Optionally available: 0.2 s; 1.5 s or 5 s (when the tuning fork is covered and uncovered)
Switch-on delay
max. 3 s
Measuring frequency
approx. 1 100 Hz in air
Measured error
In event of device change: ±2 mm (0.08 in) as per DIN 61298-2
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