Endress+Hauser Levelflex M FMP41C - Page 78

Technical data Levelflex M FMP41C with HART/4...20 mA
78 Endress + Hauser
Influence of ambiente
temperature
The measurements are carried out in accordance with EN 61298-3:
• digital output:
– FMP41C
average T
K
: 0.6 mm/10 K, max. ±3.5 mm over the entire temperature range -40 °C...+80 °C
2-wire:
• Current output (additional error, in reference to the span of 16 mA):
• Zero point (4 mA)
average T
K
: 0.032 %/10 K, max. 0.35 % over the entire temperature range -40 °C...+80 °C
• Span (20 mA)
average T
K
: 0.05 %/10 K, max. 0.5 % over the entire temperature range -40 °C...+80 °C
4-wire:
• Current output (additional error, in reference to the span of 16 mA):
• Zero point (4 mA)
average T
K
: 0.02 %/10 K, max. 0.29 % over the entire temperature range -40 °C...+80 °C
• Span (20 mA)
average T
K
: 0.06 %/10 K, max. 0.89% over the entire temperature range -40 °C...+80 °C
10.1.4 Operating conditions: Environment
Ambient temperature range Ambient temperature for the transmitter: -40 °C ... +80 °C (-40 °F … +176 °F)
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 instrument is exposed to
direct sunlight.
Ambient temperature limits If temperatures above 80 °C are present at the process connection, the permitted ambient
temperature is reduced according to the following diagram (temperature derating):
L00-FMP41xxx-05-00-00-en-001
Storage temperature -40 °C … +80 °C (-40 °F … +176°F)
Climate class DIN EN 60068-2-38 (test Z/AD)
Vibration resistance DIN EN 60068-2-64 / IEC 68-2-64: 20…2000 Hz, 1 (m/s
2
)
2
/Hz
T
2
[°C]
T
1
[°C]
-40 0
-40
0
40
60
80
100 150
200
80
T
2
T
1
max. process connection temperature
max. ambient temperature
80 °C with separate
housing
40 °C compact:
F23 housing
55 °C
F12 housing
T12 housing
compact: