Endress+Hauser Levelflex FMP56 - Operating Conditions: Environment; Ambient Temperature Range; Ambient Temperature Limits

Levelflex FMP56, FMP57
Endress+Hauser 29
Operating conditions: Environment
Ambient temperature range
Measuring device
–40 to +80 °C (–40 to +176 °F)
Local display
–20 to +70 °C (–4 to +158 °F), the readability of the display may be impaired at
temperatures outside the temperature range.
When operating the device in the open with strong sunlight:
• Mount the device in a shady position.
• Avoid direct sunlight, especially in warmer regions.
• Use a weather protection cover (see accessories).
Ambient temperature limits
With a temperature (T
p
) at the process connection the admissible ambient temperature (T
a
) is reduced according
to the following diagram (temperature derating):
Temperature derating for FMP56 with threaded connection G¾ or NPT¾
[°C]([°F]) T
a
[°C]([°F]) T
a
[°C]
([°F])
T
p
[°C]
([°F])
T
p
+120
(+248)
+120
(+248)
+82
(+180)
+79
(+174)
+74
(+165)
-40
(-40)
-40
(-40)
GT20: +74(+165)
GT20: +70(+158)
GT18: +71(+160)
GT18: +68(+154)
GT19: +58(+136)
GT19: +65(+149)
+80(+176)
GT18/20: +79(+174)
GT19: +74(+165)
-40(-40)
-40(-40)
T
a
T
p
4 20mA HART–
A:
4 20mA HART–
4 20mA–
C:
90–253VAC
K:
10.4–48VDC
L:
A0014122
GT18 = stainless steel housing
GT19 = plastic housing
GT20 = aluminum housing
A = 1 current output
C = 2 current outputs
K, L = 4-wire
T
a
= ambient temperature
T
p
= temperature at the process connection