Endress+Hauser Levelflex M FMP45 Operating Instructions Manual page 80

Technical data
Ambient temperature range
Ambient temperature limits
T
1
T
2
tank insulation
T
1
T
2
tank insulation
!
80
10.1.4 Operating conditions: Environment
Ambient temperature for the transmitter: -40 °C to +80 °C. 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 device 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
T [°C]
1
80
40
0
-20
-29
-40
-60
-250 -200
-100
Note!
For saturated steam applications with FMP45 XT the process temperature should not exceed 200
°C (392 °F). For higher process temperatures use the HT version.
) 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 4 to 20 mA HART
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