Type VH500 Flow switch for direct mounting Metal version for marine applications DN 25...DN 50 Switching range ON 18,33...14,66 l/min / Switching range OFF 17,5...141,66 l/min

DNV GL type approval / Suitable for water, oil, etc. / Adaptation to nominal size and switching point adjustment by selecting the impact vane / Direct installation in pipelines or T-pieces DN 25...DN 50 / High switching currents due to microswitch as signal generator / Vibration resistance up to 4 g

SIKA flow monitors monitor the liquid flow of low-viscosity media in pipelines. The SIKA paddle flow monitor VH500 is particularly suitable for marine applications such as cooling water monitoring, lubrication control and leakage monitoring of marine engines and compressors.

In this flow monitor, the flowing medium strikes an impact vane attached to the end of a paddle. The resulting dynamic pressure causes the paddle to deflect and actuate a microswitch.

Operating pressure

6 bar

10 bar

Process connection

G 1

M33 x 2

Series	VH500
Technical data	DNV GL type approval Suitable for water, oil, etc. Adaptation to nominal size and switching point adjustment by selection of impact lug Direct installation in pipelines or T-pieces DN 25.-DN 50 High switching currents due to microswitch as signal transmitter Vibration resistance up to 4 g
Switching function	Changeover contact
Operating pressure (test pressure)	Max. 6 bar (10 bar) or max. 10 bar (15 bar)
Temperatures
Medium	Max. 100 oc
Environment	Max. 85 oc
Electrical data
Max. Contact load capacity	24 VDC, 60 VDC.
	250 VAC. 10 A resistive load 10 A inductive load
Protection class EN 60529	P54
Protection class EN 60730-1	Class I
Approvals

Nominal diameter of the pipe section	Baffle dimensions**	Switching point ranges [m3/h]*
		Rising flow ON	Falling flow OFF
DN 25	25 x 30 mm	.O.__ 1,25	1 .05__.1 .2
DN 32	25 x 38 mm	1.7._2.05
DN 40	25 x 46 mm	2.2.__2.55	2.1 ._2.45
DN 50	25 x 58 mm	3.25_._3.85	3.1 5__.3.75
- Water. 20 oc. horizontal pipeline, tolerance 215 %.
Higher switching points possible by selecting smaller baffles Switching points for larger nominal sizes on request