Performance Characteristics; Reference Operating Conditions; Switch Point; Hysteresis - Endress+Hauser Liquiphant FTL31 Manual

Liquiphant FTL31
Reference operating
conditions

Switch point

Hysteresis

Non-repeatability

Influence of ambient
temperature
Influence of medium
temperature
Influence of medium
pressure

Switching delay

Switch-on delay

Measuring frequency

Measured error

Endress+Hauser

Performance characteristics

Ambient temperature:
Process pressure:
Fluid:
Medium temperature:
Density setting:
Switching time delay:
13 mm (0.51 in)±1 mm
max. 3 mm (0.12 in)
±1 mm (0.04 in) in accordance with DIN 61298-2
Negligible
–25 µm (984 µin)/°C
–20 µm (787 µin)/bar
• 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)
max. 3 s
approx. 1 100 Hz in air
In event of device change: ±2 mm (0.08 in) as per DIN 61298-2
+25 °C (+77 °F)
1 bar (14.5 psi)
Water (density: approx. 1 g/cm³, viscosity 1 mm
25 °C (77 °F)
> 0.7 g/cm³
Standard (0.5 s, 1 s)
2 /s)
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