Harwil Corporation

Harwil Corporation
541 Kinetic Drive
Oxnard, CA 93030
Phone: 805.988.6800

800.562.2447
Fax:

Product Catalog
MODEL - Q-10N

Component Recognized (E85349)

Extremely Wide Operating Range:

Down to 0.9 GPM in 1.0 inch pipes
Up to 1025 GPM in 16 inch pipes

Flexible Design:
Model Q-10 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 psi 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.

Two Standard Models are Available
Model Q-10N for mild acids, bases
Model Q-10CR for concentrated acids, bases, ketones, esters, alcohols, phenols, etc.

Extensive Chemical Corrosive List Available

Typical Uses

Monitoring flow of coolant water supplied to:

RF and Radar transmitters
High power transistors, SCR's etc.
Computer systems
Electromagnets
Transformers
Brakes and clutches
Lasers
Spotwelders
Vacuum systems
Marine and stationary engines
Emergency washdown 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
Contaminated groundwater

Cross Section Diagram

Specifications

Flow Range Water Calibrated @ 70°F

Note: Flow On/Off switch point range is the same for both models Q-10N & Q-10CR

Nominal Working Temperature/Pressure
200°F @ ambient pressure
250 PSIG @ room temperature
Wetted Surfaces

Model Q-10N
G.E. NORYL^®(PPO)
(10% glass fibers)
316 Stainless steel Model Q-10VCR
Hoechst Celanese Fortron^® (PPS)
(40% glass fibers)
Hastelloy^®C

Electrical Switch Characteristics

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).

Model Selection Chart

Model Selection Chart

Pipe Size	NOMINAL ON/OFF SWITCH POINT RANGE (GPM)	Model No. (N or VCR)	Target Blade No.	Switch Oper. Norm. Open or Closed	Power Cord Length 2 to any length
1	1.3 - 0.9 4 - 2	Q-10 Q-10	1 2	----	----
1-1/2	5 - 3 8 - 6	Q-10 Q-10	3 4	----	----
2	9 - 7 14 - 12	Q-10 Q-10	5 6	----	----
3

LIMITED WARRANTY

Viton^® is a registered trademark of DuPont Performance Elastomers