Promass 40 10 Technical data
Endress+Hauser 55
10.1.9 Operating conditions (process)
Medium temperature
range
Sensor:
• –40...+125 °C
Seals:
• no internal seals
Fluid pressure limit
(nominal pressure)
• Flanges: DIN PN 40...100 / ANSI Cl 150, Cl 300, Cl 600 / JIS 10K, 20K, 40K, 63K
• The Promass E sensor does not have a secondary containment
Limiting flow See Page 50 ff. (“Measuring range”)
Select nominal diameter by optimising between required flow range and permissible
pressure loss. See Page 50 ff. for a list of maximum possible full scale values.
• The minimum recommended full scale value is approx.
1
/
20
of the maximum full scale
value.
• In most applications, 20...50% of the maximum full scale value can be considered
ideal.
• Select a lower full scale value for abrasive substances such as fluids with entrained
solids (flow velocity < 1 m/s).
• For gas measurement the following rules apply:
– Flow velocity in the measuring tubes should not be more than half the sonic velocity
(0.5 Mach).
– The maximum mass flow depends on the density of the gas (see formula on
Page 50).
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