Endress+Hauser Fieldbus Levelflex M FMP43 Operating Instructions Manual page 95

Levelflex M FMP43 with FOUNDATION Fieldbus
Ambient temperature range
Ambient temperature limits
T
1
T
2
Storage temperature
Climate class
Degree of protection
Vibration resistance
Cleaning the probe
Endress+Hauser
10.1.4 Operating conditions: Environment
Ambient temperature for electronics: -40 °C to +80 °C
The functionality of the LCD display may be limited for temperatures T
A weather protection cover should be used for outdoor operation if the device is exposed to direct
sunlight.
If the temperature (T ) at the process connection is above 80 °C, the permitted ambient
2
temperature (T ) decreases as per the following diagram (temperature derating):
1
max. ambient temperature
T [°C]
1
80
60
40
0
-40
-40 0
-20 °C to +80 °C (-4 °F to +176 °F)
DIN EN 60068-2-38 (test Z/AD)
• With closed housing tested according to
– Housing F12/T12: IP68, NEMA6P (24 h at 1.83 m under water)
– Housing F23: IP69K in combination with cable entries M20 G ½ and NPT ½
– IP66, NEMA4X
• With open housing: IP20, NEMA1 (also ingress protection of the display)
Caution!
Degree of protection IP68 NEMA6P applies for M12 PROFIBUS PA connectors 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, soiling or buildup 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 buildup, adhesion through crystallization, for example, can lead
to incorrect measurement. In such instances, we recommend you use a non-contact measuring
principle, or check the probe regularly for soiling.
100 150
80
max. process connection temperature
2 2
) /Hz
Technical data
<-20 °C and T >+60 °C.
a a
80 °C with separate
housing
70 °C compact:
F12 housing
T12 housing
62 °C compact:
F23 housing
T [°C]
2
L00-FMP43xxx-05-00-00-en-002
95