Endress+Hauser Micropilot FMR67 - Page 33

Micropilot FMR67 XA01554F-A
Endress+Hauser 33
Zone 20, Zone 21
1st column: Process temperature
Column P1 to P5: Position (temperature value) on the axes of the derating
– T
a
: Ambient temperature in °C
– T
p
: Process temperature in °C
100
135
150
-40
T
p
T
p
T
p
T
p
T
p
T
p
P1 P2 P2+
P3
P4 P5
-40
-40
75
T
a
T
a
T
a
T
a
T
a
T
a
75 75 75
75 75 75
75 75 –
–
–
–
–
–
100
135
150
58
52
47
100
135
150
-40
-40
-40
-40
-40
-40
-40
-40
-40
A0032556-EN

Column P2+ is only relevant for version B of the derating.
→  4,  36
Zone 21
1st column: Calculation of temperature values and maximum permissible ambient temperature in °C
2nd column: Maximum surface temperature in °C
T = T +5 K
a
T = 80
a
119
A0032555-EN