Sierra Instruments, Inc.

- Flow Switch for Precision Detection of Liquid / Gas Flows

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The InnovaSwitch insertion-type flow switch is a high-performance, industrial-grade mass flow switch for liquids and gases. This product was designed for heavy industrial environments, including high temperature and high pressure. Each InnovaSwitch includes temperature compensation over its entire measurement range to ensure set point stability and accuracy for process temperatures that vary up to ± 50°F (± 10°C).

The sensor and wetted parts are of durable 316L stainless steel, all welded construction with no moving parts. The switch is easy to install and adjust, giving reliable, low maintenance performance in the most demanding applications.

Common applications include:

  • Pump protection
  • Fire suppression system monitor
  • Analytical sample confirmation
  • Safety shower monitoring
  • Heat transfer fluid monitoring
  • Rotating equipment lubrication
  • Safety relief valve monitor
  • Sanitary cleaning system monitor
  • Basic flow confirmation
  • Cooling water flow
  • Exhaust/Air purge monitor
  • Dry line indication
  • Soot blower feed water monitor
  • Chemical injection monitor
  • Vapor recovery monitor
  • Gas purge confirmation
  • Air handling system monitor

  • Built for heavy industry
  • Switches on a flow/no flow condition in both gases and liquids
  • High temperature version available
  • Exotic materials upon request:
    • Standard: 316L series stainless steel
    • Exotics: Hastelloy, Monel, Inconel and others
  • Two-year workmanship warranty
  • Removable plug-in electronics
  • Free of all moving parts that can stick, coat or fail
  • Self-heating sensor design improves repeatability
  • No seperate heater to fail or slow response time

  • Range of 0.01 to 5 sfps (.003 to 1.524 smps) in liquids and 0.1 to 500 sfps (.03 to 152.4 smps) gases
  • Fast response time of 0.5 to 10 seconds (media dependent)
  • Operating temperature range:
    • Standard -100°F to 390°F (-70°C to 200°C)
      Medium Temperature to 572°F (300°C)
      High Temperature to 850°F (458°C)
  • Operating pressure up to 3000 psia (207 bar)
  • Repeatability of +/- 1% of set point as flow switch; or 1/32 inch (0.8 mm) as level switch
  • Stability: Drift < 0.5% from calibrated set point over a range of ± 50°F (± 10°C)
  • Temperature compensated through entire range
  • Enclosure: NEMA 3, 4X, 7, 9. CSA, FM, UL, CENELEC and EECS approved
  • Process Connection: 0.75 inch MNPT standard. 0.5 inch and larger MNPT and various other process connections such as sanitary and flanges optional
  • Insertion length: 2 inches standard (0.5 inch or greater optional)
  • Input power: 115 VAC, 50/60 Hz standard. 230 VAC, 50/60 Hz optional, 24 VDC optional. 3.1 watt maximum
  • Output: 5 A. 250 VAC. DPDT with fail safe capability
  • Approvals: CE, CSA, CENELEC, Class 1 Div. 1 Groups B, C, & D

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