7ML19985JF02 SITRANS LR250 (PROFIBUS PA) – INSTRUCTION MANUAL Page 11
mmmmm
Specifications
Flange markings
The flange markings located around the outside edge of the flat-face flange identify the
flange assembly on which the device is mounted. The flat-face flange identification is
followed by identification of the welded assembly.
Serial number: a unique number allotted to each flange, including the date of
manufacture (MMDDYY) followed by a number from 001 to 999.
Flange series: the Siemens Milltronics drawing identification.
Nominal size: the flange size followed by the hole pattern for a particular flange class.
For example – a 2 inch ANSI B 16.5 150 lb class flange (North America)
or – a DN 80 EN 1092-1 PN 16 class flange (Europe).
Material: the basic flange material (AISI or EU material designation). North
American material codes are followed by /European ones. For example,
material designation 316L/1.4404.
Heat code: a flange material batch code identification.
DN 50 EN PN 40 165 mm 125 mm 18 mm 4
DN 80 EN PN 40 200 mm 160 mm 18 mm 8
DN 100 EN PN 40 235 mm 190 mm 22 mm 8
50 mm JIS 10K 155 mm 120 mm 19 mm 4
80 mm JIS 10K 185 mm 150 mm 19 mm 8
100 mm JIS 10K 210 mm 175 mm 19 mm 8
a)
A 2" flange is designed to fit a 2" pipe: for actual flange dimensions see Flange O.D.
Flat Face Flange Identification
Welded Assembly
Identification
Serial No. Logo
Flange Series
Material
Heat
Code
Flange
Series
Heat
Code
No.
Series Nominal Size
MMDDYYXXX 25556
2 150 316L/ 1.4404
or
316L/ 1.4435
A1B2C3
25546
A1B2C3
DN 80 PN 16
Flange
size
a)
Flange Class
Flange O.D.
Bolt Circle
Diameter (BCD)
Bolt Hole Ø
No. of Bolt
Holes
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