Deltapilot M FMB50/51/52/53
Endress+Hauser 29
Operating conditions (process)
Process temperature range
Lateral load FMB51 (static) ≤30 Nm
Pressure specifications • The maximum pressure for the measuring device depends on the lowest-rated element with regard to
pressure. See the following sections:
– → ä 10 ff, "Measuring range" section
– "Mechanical construction" section.
The MWP (maximum working pressure) is specified on the nameplate. This value refers to a reference
temperature of +20°C (68°F) or 100°F (38°C) for ANSI flanges and may be applied to the device for an
unlimited time. Pay attention to pressure-temperature dependencies.
• The pressure values permitted at higher temperatures can be found in the following standards:
– EN 1092-1: 2001 Tab. 18
1
– ASME B 16.5a – 1998 Tab. 2-2.2 F316
– ASME B 16.5a – 1998 Tab. 2.3.8 N10276
– JIS B 2220.
• The test pressure corresponds to the over pressure limit of the device (OPL = 1.5 x MWP) and may be applied
for only a limited time period in order to avoid permanent damage.
• The Pressure Equipment Directive (EC Directive 97/23/EC) uses the abbreviation "PS". The abbreviation
"PS" corresponds to the MWP (maximum working pressure) of the measuring device.
• In the case of sensor range and process connection combinations where the OPL (over pressure limit) of the
process connection is smaller than the nominal value of the sensor, the device is set at the factory, at the
very maximum, to the OPL value of the process connection. If you want to use the entire sensor range, select
a process connection with a higher OPL value (1.5 x PN; PN = MWP).
• In oxygen applications, the values for "p
max
and T
max
for oxygen applications" as per → ä 26, "Oxygen
applications" may not be exceeded.
FMB50 FMB51 FMB52 FMB53
–10°C to +100°C (+14°F to 212°F)
135°C (275°F) for 30 min. maximum
–10°C to +85°C
(+14°F to +185°F)
With PE cable: -10°C to +70°C (-14°F to 158°F)
With FEP cable: –10°C to +80°C (-14°F to 176°F)
Min. process temperature when using the KALREZ seal : -3 °C (27 °F).
1) With regard to their stability-temperature property, the materials 1.4435 and 1.4404 are grouped together under 13EO
in EN 1092-1 Tab. 18. The chemical composition of the two materials can be identical.