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InnovaSwitch 615 Series Flow Switch

Sierra Instruments InnovaSwitch 615 Level Switch from Procon Instrument Technology

Flow Switch for Precision Detection of Liquid & Gas Flows

The Sierra Instruments InnovaSwitch 615 Series represents State-of-the-art gaseous and liquid flow switching or liquid level control and continues the Sierra tradition of providing the highest quality mass flow meters and controllers in the industry.

Flow and level detection is accomplished by using a high-resolution thermal differential technique. The sensor consists of a pair of matched Resistance Temperature Detectors (RTD’s). One RTD is self-heated using a constant DC current. The other RTD is unheated and provides an accurate process temperature reference. The thermal differential created between the reference and the heated RTD pair is a function of the density and/or velocity of the media with which the sensor is in contact.

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


Innova Switch 615 features

  • Mass flow switch for the detection of the mass flow rate of liquids and gases
  • Point level switch for liquid level detection
  • Wide operating temperature range -100°F to +850°F (-73.3°C to 454°C)
  • Flow switch range of 0.01 to 5 fps liquids and 0.1 to 500 fps gases
  • Level switch - switches on level change 0.03 inch
  • Fast flow switch response time of 0.5 to 10 seconds (media dependent)
  • Level switch response time of 0.1 to 1 second wetting (media dependent)
  • CE, CENELEC and CSA approvals


Innova Switch suitable applications

  • 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


Innova-Switch Specifications

Flow Switch: Adjustable flow rate (fee per second-fps), typical: 0.01 to 5.0 fps liquids adn 0.1 to 500 fps gases
Level Switch: Switch on level change of 0.03 inch
Response Time 
Flow Switch: 0.5 to 10 senconds (media dependent)
Level Switch: 0.1 to 1 second (media dependent) 
Repeatability +/- 1% of setpoint (Flow) or 1/32" (0.8mm) Level 
Stability Drift <0.5% from calibrated setpoint over a range of +/- 10°C. Temperature compensated through entire range.
Process: -73.3°C to 200°C (-100°F to 390°F) standard. Medium T to 300°C (572°F) optional. Hi T to 454°C (850°F)
Electronics: -40°C to 60°C (-40°F to 140°F). Optional remote electronics for use in medium and Hi T environments.
Operating Pressure to 3000 psia (207 bar)
Input Power
115 VAC, 50/60Hz standard
230 VAC, 50/60Hz optional
24DC optional
3.1 Watt maximum
Output 5A. 250 VAC. DPDT with fail safe capability
PHYSICAL SPECIFICATIONS     Wetted Materials 316 L SS, Hastelloy, Monel, Inconel or other materials optional.
Explosion Proof
NEMA 3, 4X, 7, 9. CSA, FM, UL, CENELEC and EECS approved
Process Connection
0.75" MNPT standard.
0.5" and larger MNPT and various other process connections such as sanitary and flanges optional
Insertion Length
2.0" standard
0.5" or greater optional
Approvals CE, CSA, CENELEC Class 1 Div 1 Groups B,C,D
Important: Specifications are subject to change without notice


InnovaSwitch 615 product dimensions

Sierra InnovaSwitch 615 Level Switch Product Dimensions from Procon Instrument Technology