產品介紹∣Flow switches for insertion installation / Metal version with plug connector
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Flow switches for insertion installation / Metal version with plug connector

【SIKA】可攜型乾式高溫校正爐、測試泵、各種流量感測器 流量和液位測量

Flow switches for insertion installation / Metal version with plug connector

簡介

Type VHS09

  • Universal flow switch for copper pipe Ø 32...88.9
  • Adjustment to nominal diameter and setpoint setting by shortening the paddle
  • Soldering adapter for copper pipes

我要諮詢

The SIKA flow switches are used for monitoring volume flows. Depending on the requirements, they are available for different nominal widths and switching point ranges. Thanks to the "modular principle", the product variants and options can be adapted to a wide range of applications. The wide temperature and pressure ranges as well as the choice of materials or the various connection options offer a very high degree of flexibility. This is why SIKA flow switches are used in many areas:

  • Heating technology
  • Industrial cooling circuits
  • Water treatment
  • Drinking water applications

Functional principle

The flow switch consists of a paddle system with a permanent magnet at the upper end. A reed contact is placed above this magnet outside the flow. A second magnet is used to generate a restoring force for the paddle. If the flow to be monitored hits the paddle system, it is deflected. This causes the magnet to change its position relative to the reed contact, which is thus actuated. As soon as the flow is interrupted, the paddle moves back to its initial position and thus actuates the reed contact again. The restoring force required for this is generated by the two repulsing magnets.

The utilisation of the magnetic force, compared to a conventional leaf spring, results in a significantly better long-term stability and a much higher insensitivity to pressure peaks.

Technical data VHS09 VK309
Switching function

Contact
→closes at increasing flow
→opens at decreasing flow
Reversing possible

Contact
→closes at increasing flow
→opens at decreasing flow
Pressure rating PN 25 PN 10
Temperature ranges
Medium -25...110 °C -25...100 °C
Ambient -25...80 °C -25...70 °C
Electrical data
Electrical connection 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