Liquiphant M/S with electronic insert FEL58 + Nivotester FTL325N
20
Hauser
1.000
0.100
0.010
ρ
[g/cm³]
0.001
+300
+527
-60
-76
+60
+140
+120
+248
+180
+356
+240
+464
±0
+32
[°C]
T
[°F]
1.1
2.1
1.2
2.2
A0026840
1.1 Liquiphant M; density switch position 0.7 g/cm³
1.2 Liquiphant S; density switch position 0.7 g/cm³
2.1 Liquiphant M; density switch position 0.5 g/cm³
2.2 Liquiphant S; density switch position 0.5 g/cm³
• There is no minimum density for the gas phase. Operation in a vacuum is permitted!
• There is no maximum density for the liquid.
• For more information on the levels of diagnostic coverage, refer to IEC 61508-2:2010
Appendix A.2, Comment 2 and Table A.1.
Buildup (only for minimum detection)
The device may only be used in media that do not tend to cause buildup. Buildup is considered to be
any deposits with a thickness of over 0.5 mm (0.02 in). Buildup can have the effect that the demand
mode of the safety function is not detected and the device will not switch as intended.
Buildup from 0.5 mm (0.02 in) is detected with low diagnostic coverage.
Solid particles - heterogeneous mixtures (only for minimum detection)
The medium may not contain solid particles with a diameter greater than 5 mm (0.2 in). Solid
particles lodged between the tines of the tuning fork can have the effect that the demand mode of
the safety function is not detected and the device will not switch as intended.
Lodged solid particles are detected with low diagnostic coverage.
Hydrogen diffusion (only Liquiphant S - high temperature)
If there is a danger of hydrogen diffusion, the device may not be used if the following conditions
apply simultaneously. Hydrogen entering the device damages the sensor to the extent that the
demand mode of the safety function is not detected and the device does not switch as intended.
• Not over +180 °C (+356 °F) and simultaneously
• Not over 64 bar (928 psi)
The error is not detected by the diagnostics system.
