Endress+Hauser Levelflex FMP54 - Enabling and Disabling the Keypad Lock

Levelflex FMP51, FMP52, FMP54
Endress+Hauser 73
Temperature derating for FMP54 - version XT up to +280 °C (+536 °F )
[°C] ([°F]) T
a
[°C] ([°F]) T
a
[°C]
([°F])
T
p
[°C]
([°F])
T
p
+280
(+536)
+280
(+536)
+82
(+180)
+79
(+174)
+74
(+165)
-40
(-40)
-40
(-40)
-196
(-321)
-196
(-321)
GT20: +62 (+144)
GT20: +59 (+138)
GT18: +56 (+133)
GT18: +52 (+126)
GT19: +42 (+108)
GT19: +42 (+108)
+80 (+176)
GT18/20: +79 (+174)
GT19: +74 (+165)
GT18: -16 (+3)
GT18: -16 (+3)
GT19: -5 (+23)
GT19: -5 (+23)
GT20: -23 (-9)
GT20: -23 (-9)
-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:
[°C] ([°F]) T
a
[°C]
([°F])
T
p
+280
(+536)
+81
(+178)
-40
(-40)
-196
(-321)
GT20: +61 (+142)
GT18: +55 (+130)
+81 (+178)
GT18: -16 (+3)
GT20: -23 (-9)
-40 (-40)
PROFIBUS PA
FOUNDATION Fieldbus
G :
1
[°C] ([°F]) T
a
[°C]
([°F])
T
p
+280
(+536)
+79
(+173)
-40
(-40)
-196
(-321)
GT20: +58 (+137)
GT18: +55 (+126)
+79 (+173)
GT18: -16 (+3)
GT20: -23 (-9)
-40 (-40)
PROFIBUS PA
FOUNDATION Fieldbus
G :
2
Switch output
A0013631
GT18 = stainless steel housing
GT19 = plastic housing
GT20 = aluminum housing
A = 1 current output
C = 2 current outputs
G
1
, G
2
= PROFIBUS PA
1)
K, L = 4-wire
T
a
= ambient temperature
T
p
= temperature at the process connection
2)
1) For PROFIBUS PA and FOUNDATION Fieldbus the temperature derating depends on the usage of the
switch output. (G
1
: switch output not connected; G2: switch output connected).
2) For saturated steam applications the process temperature should not exceed 200 °C (392 °F). For higher
process temperatures use the HT version.