PM-3/4-B flow sensor
Liquid flow sensor designed to read the flow of water or other liquid with a capacity of 2 to 45 L per minute. High sensitivity allows detection of even small liquid flows. The sensor sends a corresponding pulse signal. Made of copper body, water impeller and Hall sensor. When water flows through the impeller, it moves the impeller shaft. Its speed changes at different flow rates. The Hall sensor sends a corresponding pulse signal. It can be applied to water heaters, automatic water dispensers mounted on a 3/4-inch diameter pipe or other industrial automation projects.
pic Flow sensor PM-3/4-B
||NO signal, OC transistor output(10mA) .
>4.7 V DC (input voltage 5 V DC).
||for 3/4" diameter pipe
||15mA (DC 5V)
||0 - 80 °C
||2-45 L/min ± 3%
|Volumetric conversion rate
||477 imp/L ±10%
|Material of construction
turbine: PA66 plastic
shaft: stainless steel SUS304
||? 1,75 MPa - (17,5 bar)
- Used to read the rotation of water or liquids
- It can be used in various DIY projects.
Dimensions and wiring diagram
Fig. PM-3/4-B flowmeter - dimensions.
When water flows through the body of the flow meter moves the rotor shaft - the sensor generates the corresponding pulse signal X (specified in the technical data). The number of pulses is proportional to the speed of water flow. Impulses, thanks to meters, can be converted into user-convenient values such as milliliters, liters, liters/min.
Fig. Flow meter principle of operation.
Example of application - wiring diagram Pulse counter CA4 + PM flow meter.
This set allows you to measure the volume of liquid. Example: filling tanks with 1.5 l of fluid each tank.
Fig. wiring diagram Pulse counter CA4 + PM flow meter.
Example of application - connection diagram CI8 pulse counter + PM flow meter.
This set allows both the measurement of the volume of liquid and the number of dosages. Example: filling a series of 10 pieces of tanks with 1.5 l of liquid each tank. When the series of 10 pieces is completed, light notification.
Fig. connection diagram CI8 pulse counter + PM flow meter.
animation. Batching, filling of tanks.