Siemens SITRANS LR250 Operating Instructions Manual page 23

Flange
Flange Class Flange O.D.
size
DN50 EN PN40
DN80 EN PN40
DN100 EN PN40
50A JIS 10K
80A JIS 10K
100A JIS 10K
Flange markings located around the outside edge of the flat faced flange identify the flange
assembly on which the device is mounted.
Flat Faced Flange Markings
Flat Face Flange Identification
Serial No. Logo
MMDDYYXXX
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 ASME B 16.5 150 lb class flange (North America)
– a DN80 EN 1092-1 PN16 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.
7ML19985KL01
Bolt Hole
Circle Ø
165 mm 125 mm
200 mm 160 mm
235 mm 190 mm
155 mm 120 mm
185 mm 150 mm
210 mm 175 mm
Flange Series
Series Nominal Size
2 150
25556
DN80 PN16
SITRANS LR250 (FF) – OPERATING INSTRUCTIONS
Bolt Hole
Ø
18 mm
18 mm
22 mm
19 mm
19 mm
19 mm
Heat
Material
Code
316L/ 1.4404 or
A1B2C3
316L/ 1.4435
No. of Thickness
Bolt Holes (cont' d )
4 25.4 mm
8 31.8 mm
8 38.1 mm
4 23.8 mm
8 24.4 mm
8 28.5 mm
Welded Assembly
Identification
Flange Heat Code
Series No.
25546 A1B2C3
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