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Model Q-10N

Download Q-10N Installation Instructions

Download Q-10N Brochure

Component Recognized (E85349)

Extremely Wide Operating Range:

  • Down to 0.7 GPM in 1.0 inch pipes
  • Up to 1025 GPM in 16 inch pipes

Flexible Design:

Model Q-10N is provided with three factory adjustable parameters which provide performance flexibility to meet a multitude of applications:

  • Target Area
  • Target Length
  • Target Stiffness

Low Cost

Available with NO, NC or SPDT Reed Switch

Send Us Your Special Requirements

We Will Quote A Special Unit To Meet Those Requirements

Designed for a broad spectrum of industrial fluids

  • Pure water
  • Tap water
  • Sea water
  • Cooling tower water
  • Glycol solutions
  • Acids
  • Bases
  • Hydrocarbons
  • Ketones
  • Lubricating oils
  • Gasoline
  • JP-4
  • Plating solutions
  • Responds to fluid flow only, independent of line pressure and temperature.
  • Max flow may be five times normal flow.
  • Positive stop eliminates fatigue effects of turbulence, vibration and flow surge on flow detecting element.
  • Quick response.
  • Small size and low profile provides easy mounting in crowded installations.
  • Very low pressure drop – typically less than 1.0 psig at normal flow rate.
  • Line pressure to 250 psig at room temperature.
  • Temperature to 200°F continuous.
  • Switches 5 VDC to 240 VAC.
  • Switches resistive and light inductive loads.
  • Switches Dry Circuit Computer/PLC inputs.
  • Switch employs magnetic coupling.

Typical Uses

Monitoring flow of coolant water and fluids supplied to:

  • RF and Radar transmitters
  • High power transistors, SCR’s etc.
  • Computer systems
  • Electromagnets
  • Transformers
  • Brakes and clutches
  • Lasers
  • Spot welders
  • Vacuum systems
  • Marine and stationary engines
  • Emergency wash down showers
  • Fire sprinkler flow alarms

In Chemical Processing

  • Liquid transfer
  • Water treatment
  • Sewage systems (filtered)
  • Fluid blending systems
  • Monitoring pump output, valve position, systems flow status
  • Liquid scrubbers
  • Starting back-up pumps
  • Monitor filter clogging
  • Heat transfer fluids




* NO = Normally Open; NC = Normally Closed; SPDT = Single Pull, Double Throw

Consult the Factory for Larger Pipe Sizes

Reed Switch Electrical Characteristics:

  • SPNO Contact ratings:
  • AC Voltage (Max switching) 300 VAC
  • DC Voltage (Max switching) 350 VDC
  • Current (max switching) 0.5 amp
  • Current (max carrying) 2.5 amp
  • Power (max) (VA, W) 50 watts
  • Contact resistance (max initial) 0.15 ohms
  • Insulation resistance 1010 ohms
  • Operating temperature
  • 40°F-240°F
  • (-40°C – 115°C)

SPNC or SPDT, 3 Watt, 100VAC/VDC optional

Computer/PLC Dry Circuit Operation

Inductive Loads

Switch contacts have been tested with small relay and J-C 30 amp motor contactor inductive drive coils at 120 VAC and 240 VAC to 500,000 operations without failure. (Volt Amp approximately 6VA. Steady State/Transient surge approximately 34 VA).

Nominal Working Temperature/Pressure

  • 200°F @ ambient pressure
  • 250 Psig @ room temperature

Wetted Surfaces

  • G.E. NORYL (PPO)
  • (10% glass fibers)
  • 316 Stainless steel


Sample Part Numbers

NOTE: Model Q-10N employs magnetic coupling between bending blade and switch body. Magnetic particles can accumulate on and around magnetic housing which may affect proper operation. Please conduct appropriate fluid magnetic particle evaluation and operational tests prior to and during installation and use.

  • Installation drawing and a numbered parts list is supplied with each unit.
  • Special One Day Delivery Available.


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