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3/4" NPT Hall Sensor Flow Meter

$23.95

In stock

Product Info

3/4″ NPT Hall Sensor flow meter for Smart Recirculation Control.

3-pin female JST connector

Black: GND, red: VCC, yellow: PULSE.

Working voltage 3.3v – 18v.

Stainless Steel 3/4″ NPT Hall Effect sensor flow meter.

Size and Threading: 3/4″ National Pipe Taper (NPT)

Material: 304 Stainless Steel

Flow Range: 2 – 45 L/min (0.53-12 GPM)

Rated Operating Voltage: DC3.3V-24V

Max Operating Current: 15mA

Out Pulse High Level: If the input is 5V, the output high level is above 4.5V

Out Pulse Low Level: If the input is 5V, the output low level is below 0.5V

Flow Characteristics: F = 8.1Q-5 +-10% where Q is the flow rate in liters/min and F is the pulse rate in Hz (pulses per second)

Flow Characteristics: See also the chart provided as one of the images.

Cumulative Flow Conversion: 1L = 477 pulses +-10%

Insulation Resistance: >100MOhm

Operating Temperature: 32F-176F

Wiring: Red: Positive Vin, Black: GND, Yellow: Pulse signal

Lead Length: ~13″-14″ (see photo)

Connector Type: JST 3P female

Stainless steel with plastic turbine

Safe for potable water

Maximum working pressure 1.75MPa

Flow range 2-45 l/min

Operate up to 80C

Flow formula F = (8.1Q – 5) ±10% where F is the pulse frequency in Hz and Q is the flow in l/min

(3 customer reviews)

The Smart Recirculation Control comes with a 90 day, no questions asked, money back guarantee.  If after installing the Smart Recirculation Control you are dissatisfied FOR ANY REASON WHATSOEVER with the performance of the Smart Recirculation Control, simply package up the unit and return it to us with a note explaining what about the product you are dissatisfied with and we will refund your purchase price, minus the original shipping charges.  This guarantee only applies to our controllers. AquaMotion Pumps and AMK-ODR valves are excluded from this guarantee once they have been installed.

  • Free shipping to US and Canada on orders over $150.00.
  • Usually ships within 2 business days.

All of our installation guides can be found on the Installation Guides page. 

Customer Reviews

3 reviews for 3/4″ NPT Hall Sensor Flow Meter

  1. Forrest K. (verified owner)

    This flow meter works exactly as advertised. I spend weeks online searching for an inexpensive 3/4″ flow meter with national pipe thread. This was the only one I found under $100. All other inexpensive flow meters I fount had British Pipe Threads which isn’t compatible with NPT

  2. Thomas L. (verified owner)

    I have a dedicated hot water return loop and when I moved into the home, the re-circulation pump was running 24/7. My propane bill was high. I mean after all it’s a 24/7 heat exchanger. So my first solution was to put the pump on a timer. Ok this reduced the bill, but it also put our home life on a schedule as well for hot water demand. Wife was not happy. My second solution was to use a smart switch for the pump connected to Alexa and programmed as a one-shot for 30min after we told Alexa to turn on the hot water. However we were still on a 30min schedule and this didn’t work for the washing machine or the dishwasher. Wife was not happy. My next solution was to use an inline flow detector to turn on/off the pump and as I was researching this solution I ran into the Smart Recirculation Control product. Didn’t have to design it myself, just buy it and install it. Bottom line it works. Excellent closed loop engineering has gone into it using the three sensors. The wife (and I) are now very happy with the results.

  3. Art C. (verified owner)

    This is my second control from Leridian, and I love it. Works great. Really prompt shipping as well, thanks!

    Home Page Review

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Description

3/4″ NPT Hall Sensor flow meter for Smart Recirculation Control (3/4 inch flow meter).

3-pin female JST connector

Black: GND, red: VCC, yellow: PULSE.

Working voltage 3.3v – 18v.

Stainless steel with plastic turbine

Safe for potable water

Maximum working pressure 1.75MPa

Flow range 2-45 l/min

Operate up to 80C

Flow formula F = (8.1Q – 5) ±10% where F is the pulse frequency in Hz and Q is the flow in l/min

Additional information

Weight0.25 lbs