Endress+Hauser Levelflex M FMP45 Operating Instructions Manual page 83

Levelflex M FMP45 with HART/4...20 mA
Climate class
Vibration resistance
Cleaning the probe
Electromagnetic
compatibility (EMC)
Process temperature range
Process pressure limits
Endress + Hauser
DIN EN 60068-2-38 (test Z/AD)
DIN EN 60068-2-64 / IEC 68-2-64: 20...2000 Hz, 1 (m/s
Depending on the application, soilings or sediments can accumulate on the probe. A thin, even layer
only influences measurement slightly. Thick layers can dampen the signal and then reduce the
measuring range. Heavy, uneven build-up, adhesion e.g. through crystallisation, can lead to
incorrect measurement. In this case, we recommend that you use a non-contact measuring
principle, or check the probe regularly for soiling
When installing the probes in metal and concrete tanks and when using a coax probe:
• Interference Emission to EN 61326, Electrical Equipment Class B
• Interference immunity to EN 61326, Annex A (Industrial area) and NAMUR Recommendation
NE 21 (EMC)
The measured value can be affected by strong electromagnetic fields when installing rod and rope
probes without a shielding/metallic wall, e.g. plastic, and in wooden silos.
• Interference emission to EN 61326, Class A equipment.
• Interference immunity: the measured value can be affected by strong electromagnetic fields.
10.1.5 Operating conditions: Process
The maximum permitted temperature at the process connection (see Figure for measuring point) is
determined by the process connection ordered:
FMP45: process pressure depending on the process temperature
Pressure [bar]
450
400 400
400
350
300
250
200
150
100
50
0
o o
-200 C -100 C
1 2
-60oC
See pressure/temperature diagram on this page.
The specified rage may be reduced by the selected process connection.
The pressure rating (PN) specified on the flanges refers to a reference temperature of 20 °C, for
ASME flanges to 100 °F.
400
400
o o
0 C 100 C
3 4
0oC 100oC
2 2
) /Hz
380
350
FMP45 XT FMP45 HT
o o
200 C 300 C
5 6
200oC 300oC
280 °C
Technical data
300
o
400 C
7
400oC
o
Temp. [ C]
L00-FMP45xxx-05-00-00-de-001
83