Flowmetering Vortex flowmeters 3
Sizing considerations
Inlet Section
Outlet Section
Straight run piping requirements 4
Straight pipe section
minimum 15 × DN
minimum 5 × DN
Valve upstream of the meter tube
minimum 50 × DN
minimum 5 × DN
Pipe reduction
minimum 15 × DN
minimum 5 × DN
Piping conditions
Pipe extension minimum 5 × DN D = Internal diameter of the pipe - If there is not a sufficient straight run of pipe, a flow rectifier may be used to reduce the above diameter measurements. Consult your local Spirax Sarco representative or the factory for your specific application. minimum 18 × DN
4 Check IM-P736-04 for full installation guidance.
How to order
Selection:
3.6 23
Suffix Code
Category
Description
Example
In-line multivariable mass vortex flowmeter
VLM30-S
Base Model
VLM30-S
In-line multivariable mass vortex flowmeter with integrated binary output, temperature compensation, and flow computer functionality.
VLM30-E
Explosion Protection Certification
None (Safe area)
Y0
Y0
Integral single sensor.
C1
System Design
C1
Remote single sensor - 5 m (16 ft) signal cable supplied.
R1
Wafer/DN25 (1")/DN25 (1")
W025R0
Wafer/DN40 (1½")/DN40 (1½")
W040R0
Wafer/DN50 (2")/DN50 (2")
W050R0
Wafer/DN80 (3")/DN80 (3")
W080R0
Wafer/DN100 (4")/DN100 (4")
W100R0
Wafer/DN150 (6")/DN150 (6")
W150R0
Flange/DN15 (½") / DN15 (½")
F015R0
Flange/DN25 (1")/DN25 (1")
F025R0
Process connection type
F050R0
Flange/DN40 (1½")/DN40 (1½")
F040R0
Flange/DN50 (2")/DN50 (2")
F050R0
Flange/DN80 (3")/DN80 (3")
F080R0
Flange/DN100 (4")/DN100 (4")
F100R0
Flange/DN150 (6")/DN150 (6")
F150R0
Flange/DN200 (8")/DN200 (8") *
F200R0
Flange/DN250 (10")/DN250 (10") *
F250R0
Flange/DN300 (12")/DN300 (12") *
F300R0
* Note this size is not available for EC1935 compliant products.
'How to order' continued on next page
TI-P736-01 EMM Issue 6
Page 11 of 13
VLM30/VLM30 Food+ In-line Vortex Flowmeter
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