Endress+Hauser Levelflex FMP54 - Disabling Write Protection via Access Code; Deactivation of the Write Protection via Access Code

Levelflex FMP51, FMP52, FMP54
70 Endress+Hauser
Temperature derating for FMP51 with threaded connection G1½ or NPT1½
[°C] ([°F]) T
a
[°C] ([°F]) T
a
[°C]
([°F])
T
p
[°C]
([°F])
T
p
+200
(+392)
+200
(+392)
+82
(+180)
+79
(+174)
+74
(+165)
-40
(-40)
-40
(-40)
GT20: +57 (+135)
GT20: +54 (+129)
GT18: +49 (+120)
GT18: +49 (+120)
GT19: +20 (+68)
GT19: +20 (+68)
+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:
[°C] ([°F]) T
a
[°C]
([°F])
T
p
+200
(+392)
-40
(-40)
GT20: +57 (+134)
GT18: +49 (+120)
+81 (+178)
-40 (-40)
[°C] ([°F]) T
a
[°C]
([°F])
T
p
+200
(+392)
+79
(+174)
-40
(-40)
GT20: +54 (+129)
GT18: +49 (+120)
+79 (+174)
-40 (-40)
PROFIBUS PA
FOUNDATION Fieldbus
Switch output
G :
2
+81
(+178)
PROFIBUS PA
FOUNDATION Fieldbus
G :
1
A0014121
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 150 °C (302 °F). For higher
process temperatures use FMP54.