KROHNE VFM 5090 EN - Manual (Page 61)

Flowmeter (Primary head/Sensor VFS 5090(I))
Versions and meter sizes Pressure ratings see Table “Dimensions” on page 64
(Note the operating limits to DIN 2401 and ANSI B 16.5!)
Sandwich design to...
DIN 19205 DN 25 to 150
ANSI 1” to 6”
Flange connections to ...
DIN 2501 DN 10S to 200
ANSI B 16.5 3/8”S to 8”
Groove joint to ...(optional)
DIN 2512 DN 25 to 150
ANSI 1” to 6”
Product and ambient temperature see Diagram IV on page 59
Hazardous duty versions
FM, CSA, PTB approvals are pending
Accuracies
Operating volumetric flow(Re ³20000)
Measuring error ± 1% of measured value for DN25 to 200 & ANSI1” to 8 ”
± 2% of measured value for DN10S to 20,ANSI 3/8”S to ¾”
Normalised volumetric& mass flow(Re ³20000)
Measuring error ±1.5% of measured value for DN25 to 200 & ANSI1” to 8 ”
±2.5% of measured value for DN10S to 20,ANSI 3/8”S to ¾”
Repeatability ± 0.5% of measured value
Product Temperature error Compensated by software only
Materials
SR.NO DESCRIPTION MATERIAL REMARKS
1 Housing
Stainless Steel, A351 CF3M (316L)
Stainless Steel, A351 CF8 (304) Upto size DN100/4”
From DN150/6” to DN200/8”
2 Vortex shedding body Unalloyed Titanium(No.3.7035) as standard
Seals
a. upto 180 deg C(356deg.F) Viton O ring Non steam applications
3 b. upto 220deg C(428deg.F) Kalrez 4079 O ring Non steam applications
c. upto 240 deg C(464deg.F) Parofluor O ring Steam applications
4 Bluff body metal seal C ring Inconel Ni plated Once used metal C ring should not
be used again.Tightening torques
for new seals are
M6= 1.5 kg - m
M8= 2 kg - m
M10= 5.5 kg - m
5 Gaskets GASKET,STYLE AF-139,NON ASBESTOS
GASKET,STYLE AF-160,NON ASBESTOS
GASKET,TEFLON(PTFE)
Any one as per application
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