Mechanical flow switch for liquid media with cast steel flange

VD-FT

Mechanical flow switch for liquid media with DN 15 to DN 150 flange connection, 2-950 l/min H2O switching ranges, adjustable Reed contact, cast steel construction and PN 40 pressure resistance.

Introduction

Flow monitoring in industrial liquid lines depends on a clear switching point and a housing that fits the process. This mechanical flow switch combines contactless actuation of an adjustable Reed contact with accurate switching value setting via a 180° scale and setting diagram.
 
The cast steel flange design covers DN 15 to DN 150 pipe sizes and H2O switching ranges from 2-950 l/min. Recommended Qmax. values extend up to 2000 l/min, while PN 40 pressure resistance, \pm5 % full-scale tolerance and media temperatures from -20..+120 °C support dependable use with water and oils.
 
Standard installation is based on horizontal flow, with the switching head not recommended in a downward position. Straight calming sections of 5 x DN in the inlet and outlet support stable operation. Options such as ingress protection (IP65), temperature indication, temperature monitoring, a metal cover and oil switching ranges allow the configuration to be matched more closely to the application.

Repeatable switching
Repeatable switching
180° scale and setting diagram support accurate switching value adjustment.
Pressure-ready design
Pressure-ready design
PN 40 pressure resistance supports liquid lines with higher pressure requirements.
Large flow coverage
Large flow coverage
DN 15 to DN 150 versions cover H2O switching ranges from 2-950 l/min.
Oil-capable range
Oil-capable range
Suitable for water and oils; oil switching ranges are available on request.

Features

Mechanical reed switching

The device monitors flow in liquid media through contactless actuation of an adjustable reed contact.

Cast steel housing

The construction uses cast steel GSC 25 as the connection material, with wetted materials including 1.4310, CW614N, POM, NBR, Klingerit and hard ferrite.

DIN flange design

The flange version follows DIN 3202, series F1 length, DIN 2545 PN 40 flange and DIN 2526 Form C sealing face.

Electrical connection

The standard connection uses a DIN 43650-A / ISO 4400 plug and a changeover Reed switch.

Installation position

Horizontal flow is the standard arrangement. Other installation positions are possible, but they affect the switching point or switching range.

Setpoint adjustment

The switching point is adjusted by loosening the switch head fixing screw and rotating the switch head.

Operating guidance

Straight calming sections of 5 x DN are required in the inlet and outlet. Filters are recommended for contaminated media.

Configuration options

Options include signal lamp, temperature indication, temperature monitoring, ingress protection (IP65), metal cover and higher media temperature resistance.