Operating Conditions: Process; Process Temperature Range; Process Pressure Limits - Endress+Hauser Levelflex FMP51 Technical Information

Levelflex FMP51, FMP52, FMP54

Process temperature range

Process pressure limits

Endress+Hauser
When installing the probes in metal and concrete tanks and when using a coax probe:
• Interference emission to EN 61326 - x series, electrical equipment Class B.
• Interference immunity to EN 61326 - x series, requirements for industrial areas 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. in plastic and wooden silos.
• Interference emission to EN 61326 - x series, electrical equipment Class A.
• Interference Immunity: the measured value can be affected by strong electromagnetic fields.

Operating conditions: Process

The maximum permitted temperature at the process connection is determined by the O-ring version ordered:
Device O-ring material
FMP51 FKM (Viton GLT)
EPDM
FFKM (Kalrez)
FMP52 —
FMP54 Graphite
Device O-ring material
FMP56 FKM (Viton GLT)
EPDM
FMP57 FKM (Viton GLT)
EPDM
The medium temperature can be higher.
However, when using rope probes the stability of the probe rope is reduced by structural changes at
temperatures over 350 °C (662 °F).
Device Process pressure
FMP51 –1 to 40 bar (–14.5 to 580 psi)
FMP52 –1 to 40 bar (–14.5 to 580 psi)
FMP54 –1 to 400 bar (–14.5 to 5 800 psi)
Process temperature
–30 to +150 °C (–22 to +302 °F)
–40 to +120 °C (–40 to +248 °F)
–5 to +200 °C (+23 to +392 °F)
–50 to +200 °C (–58 to +392 °F); completely coated
Version XT: –196 to +280 °C (–321 to +536 °F)
For divisible rod probes the lower limit of the process
temperature is -60 °C (-76 °F)
Version HT: –196 to +450 °C (–321 to +842 °F)
For divisible rod probes the lower limit of the process
temperature is -60 °C (-76 °F)
Process temperature
–30 to +120 °C (–22 to +248 °F)
–40 to +120 °C (–40 to +248 °F)
–30 to +150 °C (–22 to +302 °F)
–40 to +120 °C (–40 to +248 °F)
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