Endress+Hauser Levelflex M FMP45 Operating Instructions Manual page 82

Technical data
Ambient temperature range
Ambient temperature limits
T
1
T
2
tank insulation
T
1
T
2
tank insulation
Storage temperature
82
10.1.4 Operating conditions: Environment
Ambient temperature for the transmitter: -40 °C ... +80 °C (-40 °F ... +176 °F)
The functionality of the LCD display may be limited for temperatures
Ta<-20 °C and Ta>+60 °C.
A weather protection cover should be used for outdoor operation if the instrument is exposed to
direct sunlight.
FMP45 (HT 400 °C)
If the temperature (T ) at the process connection is below -40 °C or above +80 °C, the permitted
2
ambient temperature (T
permitted ambient temperature
T [°C]
1
80
40
0
-27
-33
-40
-60
-250 -200 -100
FMP45 (XT 280 °C)
If the temperature (T ) at the process connection is below -40 °C or above +80 °C, the permitted
2
ambient temperature (T
permitted ambient temperature
[°C]
T
1
80
40
0
-20
-29
-40
-60
-250 -200
-100
-40 °C ... +80 °C (-40 °F ... +176°F)
) is limited as shown in the following diagram (temperature derating):
1
80
-40 0
) is limited as shown in the following diagram (temperature derating):
1
80
-40 0
Levelflex M FMP45 with HART/4...20 mA
200 300 400
permitted process connection temperature
80 °C with separate
housing
66 °C compact:
F12 housing
T12 housing
56 °C compact:
F23 housing
200 280
T [°C]
2
permitted process connection temperature
80 °C with separate
housing
66 °C compact:
F12 housing
T12 housing
54 °C compact:
F23 housing
[°C]
T
2
L00-FMP45xxx-05-00-00-en-002
L00-FMP45xxx-05-00-00-en-003
Endress + Hauser