Storage Temperature; Climate Class; Degree Of Protection; Vibration Resistance - Endress+Hauser Levelflex M FMP41C Technical Information

T
1
T
2

Storage temperature

Climate class

Degree of protection

Vibration resistance

Cleaning of the probe

Electromagnetic compatibility

26
FMP45 (XT 536°F / 280°C)
If the temperature (T ) at the process connection is below > -40°F (-40°C) or above > +176°F (80°C), the
2
permitted ambient temperature (T
Permitted ambient temperature
T °F (°C)
1
176 (80)
104 (40)
32 (0)
-4 (-20)
-20 (-29)
-40 (-40)
-76 (-60)
-418 -328 -148
(-250) (-200) (-100)
-40°F to +176°F (-40°C to +80°C)
DIN EN 60068-2-38 (test Z/AD)
• with closed housing tested according to
– IP68, NEMA6P (24 h at 72" / 1.83 m under water surface)
– IP66, NEMA4X
• with open housing: IP20, NEMA1 (also ingress protection of the display)
Caution!
Degree of protection IP68 NEMA6P applies for M12 PROFIBUS PA plugs only when the PROFIBUS cable is
plugged in.
DIN EN 60068-2-64 / IEC 68-2-64: 20 to 2000 Hz, 1 (m/s
Depending on the application, dirt or sediments can accumulate on the probe. A thin, even layer only
influences measurement slightly. Thick layers can dampen the signal and then reduce the measuring range.
Heavy, uneven build-up, above all adhesion e.g. through crystallization, can lead to incorrect measurement. In
this case, it is recommended that you use a non-contact measuring principle, or check the probe regularly for
build-up.
When installing the probes in metal and concrete tanks and when using a coax probe:
• Interference Emission to EN 61326, Electrical Equipment Class B
• Interference Immunity to EN 61326, Annex A (Industrial area) and NAMUR Recommendation
NE 21 (EMC)
The measured value can be affected by strong electromagnetic fields when installing rod and cable probes
without a metallic wall, e.g. plastic tanks.
• Interference Emission to EN 61326, Class A equipment.
• Interference Immunity: the measured value can be affected by strong electromagnetic fields.
) is limited as shown in the following diagram (temperature derating):
1
-40 32 176
(-40) (0) (80)
Permitted process connection temperature
Levelflex M FMP41C, FMP45
176°F (80°C) with
remote housing
151°F (66°C) with
compact housing
F12, T12
133°F (56°C) with
compact F23 housing
392 536
(200) (280)
2 2
) /Hz
T °F
2
(°C)
L00-FMP45xxx-05-00-00-en-003
Endress+Hauser