KROHNE BM 26 A EN - Manual (Page 43)

Installation and Operating Instructions BM 26 A 43
7.4.3 Maximum operating conditions for BM 26 A with 316 L steel measuring tube
according to European Union Pressure Equipment Directive 97/23/EC
The graph below shows the maximum allowable process pressure, Ps, for a given process
temperature, Ts, in a 316L measuring chamber of a given nominal diameter (the flanges being
grouped into 4 categories)
Higher operating pressures may be approved by KROHNE following analysis of customer
specifications. Maximum product temperature is dependant on the application and is defined by the
customer in the product order options list.
7.4.4 Flange categories for operating conditions in a 316L steel measuring tube
Flange Categories
1 2 3 4
DN15 PN40
DN25 PN40 DN40 PN40 ½ " ASME 150LB
DN20 PN40 DN25 PN40 WN DN40 PN40 WN ¾ " ASME 150LB
DN15 PN40 WN 1" ASME 300LB DN50 PN40 1" ASME 150LB
DN20 PN40 WN DN50 PN40 WN 1"½ ASME 150LB
½ " ASME 300LB 1"½ ASME 300LB 2" ASME 150LB
¾ " ASME 300LB 2" ASME 300LB