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Q: If the output signal is a pulse, what is the pulse rate per liter and duration per pulse?

The current image shows an "F" number of 7, which means 7Hz per liter/min, so 7 pulses per second indicates a flow rate of 1 liter/minute, hence 7 * 60 seconds/minute = 420 pulses per liter (per minute). I have no idea what the duration would be.

Q: Does it prevent back flow or what happens if water does try to go in wrong direction?

It does not have any backflow prevention. It is a little water wheel inside a pipe which has magnets in the vanes of the water wheel. The unit simply counts magnetic pulses as the wheel is moved by the water flow. It would probably register water flow either way but would only be accurate in the forward flow direction. Any domestic water system should have backflow preventers in place to keep drinking water contamination from occuring.

Q: Are the threads npt, bspt or bspp? please understand this is basic info should always be provided without having to specifically ask. thanks.

Hello, thank you for your inquiry. It's BSPT.

Q: If the flow rate is less than 1L/minute, will it not not show any pulses? I'm interested in using this to detect leaks and 1L/min is a lot of water.

I don't know about 1L/min, but I have tried pumping liquid through one using a dosing pump and nothing registered. The water wheel will have some resistance, so a very slow flow might not register.

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💧 Measure with confidence, flow with precision!

MULTI INDUSTRY READY - Ideal for petrochemical, irrigation, residential water control, and more
HIGH PRESSURE TOLERANCE - Handles water pressure up to 1.75MPa, perfect for demanding environments
VERSATILE VOLTAGE RANGE - Operates seamlessly between 5-24V DC, fitting diverse system needs
ROBUST FOOD SAFE BUILD - Crafted from ROHS-compliant food-grade plastic for safe, durable use
PRECISION FLOW MONITORING - Hall effect sensor ensures ±2% accuracy for reliable fluid measurement

The GREDIA 2" Water Flow Sensor is a hall effect flowmeter designed for precise fluid measurement between 10-200L/min. Featuring a durable, food-grade plastic body and a 2" BSPT male thread, it supports water pressures up to 1.75MPa and operates on a flexible 5-24V DC power range. Perfectly suited for applications in petrochemical, irrigation, and residential water management, it delivers reliable, accurate flow data with ±2% precision.

Have a Question? See What Others Asked

If the output signal is a pulse, what is the pulse rate per liter and duration per pulse?

Does it prevent back flow or what happens if water does try to go in wrong direction?

Are the threads npt, bspt or bspp? please understand this is basic info should always be provided without having to specifically ask. thanks.

If the flow rate is less than 1L/minute, will it not not show any pulses? I'm interested in using this to detect leaks and 1L/min is a lot of water.

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2" Water Flow Sensor Food-Grade Switch Hall Effect Flowmeter Fluid Meter Counter 10-200L/min

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