Technical data

 Switching function

 Contact 

 → closes at increasing flow 

 → opens at decreasing flow 

 Reversing possible

 Pressure rating

 PN 25

 Temperature ranges

 Medium

 -25...110 °C

 Ambient

 -25...80 °C

 Electrical data

 Electrical connection

 → VHS

 → VH3

 Plug connector DIN EN 175301- 

 803-A incl. cable socket 

 1.5 m PVC jacket cable

 Switching current

 Max. 1 A

 Switching voltage

 Max. 230 VAC, 48 VDC

 Rating

 Max. 26 VA, 20 W

 Degree of protection EN 60529

 IP65

 Protection class EN 60730-1

 Class II 

 Approvals

 WRAS

 TUV 

 Options

 For type

 See order code

 VHS

 → Plug connector DIN EN 175301-

      803-A incl. cable socket with two 

      LED for switching voltages

      24 V...230 V AC/DC ±20 %,

      ambient temperature -20...70 °C 

 → or 4-pin-sensor plug M12 x 1

 VHS / VH3

 → For use in potentially explosive 

      atmospheres (Version VH...X) 

      max. media temperature 100 °C

 Nomina

 diameter

 Thread connection D1

 Setpoint ranges [l/min]*

 Max. 

 flow rate

 [l/min]

 VHS

 VH3

 Increasing flow ON

 Decreasing flow OFF

 Increasing flow ON

 Decreasing flow OFF

 DN 8

 G¼

 2.1...2.7

 1.8...2.4

 1.9...2.5

 1.7...2.3

 45

 DN 10

 G⅜

 2.5...3.2

 2.2...2.9

 2.4...3.0

 2.1...2.8

 60

 DN 15

 G½

 3.4...4.2

 3.0...3.8

 3.2...4.0

 3.0...3.8

 67

 DN 15

 G½ male**

 2.5...3.2

 2.2...2.9

 2.4...3.0

 2.1...2.8

 60

 DN 15

 G¾ male**

 2.5...3.2

 2.2...2.9

 2.4...3.0

 2.1...2.8

 60

 DN 20

 G¾

 7.0...9.1

 6.4...8.2

 6.6...8.2

 6.3...7.8

 120

 DN 25

 G 1

 13.5...17.0

 12.0...15.5

 13.0...15.5

 12.5...15.0

 195

 DN 32

 G 1¼

 15.5...20.5

 14.5...19.0

 14.5...18.0

 13.5...17.0

 240

 DN 40

 G 1½

 26.5...34.5

 25.5...32.5

 25.0...31.0

 24.0...30.0

 400

 DN 50

 G 2

 39.5...51.0

 39.0...50.0

 37.5...47.5

 36.5...46.5

 400