DIGITEN G1" Water Flow Hall Effect Sensor Switch Flow Meter Flowmeter Counter 1-60L/min

Excellent for the price, but it it has its limitations. As other reviewers wrote, it restricts the flow. I wouldn't want to use it if a water line larger than 1/2 inch is needed. Calibration appears to be within about 5% from 0.5 gpm to 4 gpm. Below 0.5 gpm calibration falls off quickly. I showed an 18% error at 0.38 gpm. I didn't test it above 4.28 gpm which is all I got through my 1/2" hose.

It works well for my application. I set up a solar water heater for my pool controlled by a Raspberry Pi. I am using it to provide relative flow rates while making minor adjustments to the actuator/valve, so I can provide a variable flow that is always a constatnt temperature higher than my pool temp. Not sure how accurate it is, but I do know that the value of 450 pulses/liter for the 1" as stated in the ad is not correct . If F=4.8 * L/M, then pulses/liter should be 4.8*60 or 288 which is the value that I am using, but I still suspect it is too high. Will have to write some code to allow me to calibrate it. Had it in my system for about a month now, no complaints Update 6/4/2018. After adding 2 more solar panels, I am getting a max flow rate of 45 liters/min. Still running fine. but does deveop a louder hum at the higher flow rates. In addition at this increased flow rate I believe that it may have become a bottleneck considering the pump size that I am using to pump the water up around 25 feet to the solar panel.

It performs as expected

Worked great for 11.5 months with a RPI. Unfortunately it failed at 11.5 months with minimal use. When starting the flow it rattles around until the paddle wheel gets stuck. I need very low flow rates so it still flows water for me, but I wouldn't buy again. I'll have to drain the system to eliminate this part at some point.

I bought this sensor as an Arduino input to control my home's water pump. So far so good.

Watch out since the internal bore is smaller that what you would expect. If you want a 1" order the next bigger size to avoid obstruction.

Works as Required

The design of this blocks the water flow way too much which is going to create too much back pressure. Yes, it's labeled in the description how many liters/min it is rated for, but I'm still not impressed with the design. If you're using this for a sprinkler system, avoid this one and get the 1-1/2" instead.

good value

Flow meter o in italiano sensore di flusso con connessione 1 pollice (G1) maschio / maschio. L'ho utilizzato per automatizzare l'avvio di un autoclave per riempire un serbatoio d'acqua. Il sensore manda in output un onda quadra con frequenza pari al numero di giri effettuati dal sensore, è possibile ricavare da questo paramentro il numero di litri per minuto / ora. Purtroppo oltre alle info stampate sul sensore, a casa non alcun manuale o foglio di istruzioni, ho quindi dovuto cercare in rete le specifiche tecniche del sensore: nel dettaglio: Rapporto frequenza l/min è di 4.8 come anche indicato anche nella descrizione, Output pulse high level Signal voltage >4.5 V( input DC 5 V) Output pulse low level Signal voltage <0.5V( input DC 5V) Precision 3% (Flow rate from 1L/min to 10L/min) Output signal duty cycle 40%～60% Esistono due modelli versione1 e versione2 che differiscono solo dalla leggera differenza nel rapporto Litri/minuto, personalmente non sono stato in grado di capire con certezza quale delle due versioni è quella che mi è arrivata ma avendo trovato nelle specifiche tecniche stampate il rapporto 4.8 posso intuire che si tratti della versione1 (la versione2 dovrebbe avere un rapporto l/min di 4.7). Ottimo prodotto, spero che duri nel tempo.

tutto ok.