Flow Switch Adjustable

  • Large range of sizes for flow rates from 1 to 600 l/min 1/4" to 3" pipe size
  • Highly Reproducible
  • Precise stepless adjustment of the switching value
  • High switching power
  • Not sensitive to dirt
  • Short installation length
  • PDF data sheet
G
Thread
Nominal Width Switching
Range
l/min H2O
Qmax
recomm-
ended
Type
G 1/4 DN 8 1-5 8 VM-008GR005
3-12 15 VM-008GR012
G 3/8 DN 10 2-6 10 VM-010GR006
3-12 15 VM-010GR012
G 1/2 DN 15 2-5 15 VM-015GR006
4-20 30 VM-015GR020
G 3/4 DN 20 4-12 20 VM-020GR012
10-40 50 VM-020GR040
G 1 DN25 10-60 70 VM-025GR060
G 1 1/4 DN 32 20-100 120 VM-032GR100
G 1 1/2 DN 40 30-150 180 VM-040GR150
G 2 DN50 50-250 300 VM-050GR250
G 2 1/2 DN 65 50-400 480 VM-065GR400
G 3 DN80 100-600 720 VM-080GR600
Dimensions and weights
G size Part No H
mm
L
mm
SW
mm
X
mm
Kg
G 1/4 VM-008GR 144 68 29 12 1.2
G 3/8 VM-010GR 1.3
G 1/2 VM-015GR 13 1.4
G 3/4 VM-020GR 73 32 11 1.5
G 1 VM-025GR 87 41 12 1.7
G 1 1/4 VM-032GR 155 98 52 13 2.3
G 1 1/2 VM-040GR 156 113 59 14 3.0
G 2 VM-050GR 164 137 72 17 4.3
G 2 1/2 VM-065GR 195 160 85 26 5.8
G 3 VM-080GR 175 148 200 23 7.0

The volume flow raises a spring loaded disc unit with a magnetic coupling which actuates a hermetically separated micro switch. The switching point is ajustable by turning the head of of the assembly which can then be locked into position with the locking screw. Ideally the unit should be mounted in vertical position as shown above with the flow horizontal and in straight section of pipe about 5 times longer than the pipe diameter on both the inlet and outlet sides to avoid turbulent flow. Other positions are possible but mounting the actuator body below the pipe (upside down) is not recommended.

Flow Switch General Specification

   
Switch Type Micro Switch
Nominal width DN 8..80
Process connection female thread G 1/4..G 3
Switching range 1 - 600 l/min see table
Pressure Resistance G 1/4..G 1/2 - PN 100 bar
G 3/4..G 1 - PN 25 bar
G 11/4 ..G 3 - PN 16 bar
Medium Temperature -20..+90 °C
Ambient Temperature -20..+70 °C
Media water (oils and gases available on request)
Switching Voltage Max 250 VAC
Switching Current Max 5A
Protection Class 2- safety insulation
Ingress Protection IP 65 (optional IP 44)
Connection plug DIN 43650-A / ISO 4400

Materials in contact with
medium

Rg 5 / Rg 6 nickelled, POM, 1.4310,
CW614N, NBR, hard ferrite
Other Materials ABS PA
Weights see table for sizes and weights

Ordering Information

Model FLow Switch Part Numbers Price each
Part Number Part Number = VM x GR y z

contact us for a quotation

Inquiry form





where x = Nominal pipe size, y = flow rate switching range z= ATEX option see tables above and configurator on the pdf data sheet
Options

Options
● Special plugs, Tuchel / Harting
● Signal lamp red or red / green in the plug DIN 43650-A
● Other signal lamp
● Temperature display 0..120 °C
● Temperature monitoring 40..90 °C
● Temperature resistant up to 150 °C
● Metal cap
● Gold contact microswitch 125 V AC / 30 V DC, 100 mA
● Germanischer Lloyd
● Switching ranges for oil or gas
● Special values