Operating Conditions: Process - Endress+Hauser Proline Promass 84 MODBUS RS485 Operating Instructions Manual

Proline Promass 84 MODBUS RS485
Medium temperature range
Limiting medium pressure
range (rated pressure)
Limiting flow
Endress+Hauser
11.1.9

Operating conditions: Process

Sensor
• Promass A: –50 to +200 °C (–58 to +392 °F)
• Promass F: –50 to +200 °C (–58 to +392 °F)
• Promass F (high temperature version): –50 to +350 °C (–58 to +662 °F)
• Promass M: –50 to +150 °C (–58 to +302 °F)
Seals
• Promass F:
No internal seals
• Promass M:
– Viton: –15 to 200 °C (–5 to +392 °F)
– EPDM: –40 to +160 °C (–40 to +320 °F)
– Silicone: –60 to +200 °C (–76 to +392 °F)
– Kalrez: –20 to +275 °C (–4 to +527 °F)
– FEP: sheathed (not for gas applications): –60 to +200 °C (–76 to +392 °F)
• Promass A (only for mounting sets with threaded connections):
– Viton: –15 to 200 °C (–5 to +392 °F)
– EPDM: –40 to +160 °C (–40 to +320 °F)
– Silicone: –60 to +200 °C (–76 to +392 °F)
– Kalrez: –20 to +275 °C (–4 to +527 °F)
The material load diagrams (pressure-temperature diagrams) for the process connections are
provided in the separate "Technical Information" document on the measuring instrument in
question. This can be downloaded as a PDF file from www.endress.com.
List of the "Technical Information" documents available → ä 118.
Pressure ranges of secondary containment:
• Promass F
– DN 8 to 50 (3/8" to 2"): 40 bar (600 psi)
– DN 80 (3"): 25 bar (375 psi)
– DN 100 to 150 (4" to 6"): 16 bar (250 psi)
– DN 250 (10"): 10 bar (150 psi)
• Promass M
– 100 bar (1450 psi)
• Promass A
– 25 bar (362 psi)
See the "Measuring range" section → ä 93
Select nominal diameter by optimizing between required flow range and permissible pressure loss.
See the "Measuring range" section for a list of max. possible full scale values.
• The minimum recommended full scale value is approx. 1/20 of the max. full scale value.
• In most applications, 20 to 50% of the maximum full scale value can be considered ideal.
• Select a lower full scale value for abrasive substances such as liquids with entrained solids
(flow velocity <1 m/s (<3 ft/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:
Formula → ä 95
Technical data
107