Is this food grade - can I use it to measure beer transfer rate?

Yes, it is food grade. thank you!

What type of electrical connector is that? What would I need to connect to it?

this connector is a male 2.54mm JST-XHP 3 Pin I tested this flowmeters male connector when it arrived and it matched perfectly with the female 2.54mm JST-XHP 3 Pin connector. The other answer said it might be a JST-PH. This is WRONG! I also bought those and they did not work. I purchased the following kit and the 3-pin female connector worked. https://www.amazon.com/gp/product/B01IHFYT1U/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1

Can these be used for air flow, we need in 24 vdc, 1/4" npt

Probably not..reliably. however I blew into it with a small length of 1/4 tube to test it and the rotor turned just fine.and I could measure the output pulses.

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DIGITEN 1/4 Quick Connect 0.3-10L/min Water Hall Effect Flow Sensor Meter

Product ID: 48830513

Details

Brand
DIGITEN
Colour
White
Connector type
Quick Connect
Exterior finish
Stainless
Item dimensions L x W x H
6.4 x 3 x 3.8
Item weight
30 Grams

⚡3.5-12 VDC wide voltage range

💧0.3-10 L/min precise flow range

🔗1/4" quick connect ease

€ 25.90

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Description

💧 Flow with confidence, connect with ease!

VERSATILE COMPATIBILITY - Ideal for water heaters, purifiers, coffee machines & more
PLUG PLAY QUICK CONNECT - Effortless 1/4" installation for instant setup
PRECISION FLOW MONITORING - Accurate ±2% error rate across 0.3-10 L/min range
LOW POWER HIGH EFFICIENCY - Consumes just 1.5 mA at 5V for energy-smart operation
ROBUST ALL WEATHER DURABILITY - Waterproof, heat & cold resistant for any environment

The DIGITEN 1/4 Quick Connect Water Hall Effect Flow Sensor offers precise water flow measurement from 0.3 to 10 L/min with ±2% accuracy. Designed for easy installation with a 1/4" quick connect, it operates efficiently on 3.5-12 VDC and withstands harsh conditions including water, heat, and cold. Perfect for smart home appliances and industrial applications, this compact sensor ensures reliable, real-time flow data with minimal power consumption.

Specifications

ASIN	B01D44N41U
Best Sellers Rank	290,503 in DIY & Tools ( See Top 100 in DIY & Tools ) 1,275 in Air Tool Accessories
Brand	DIGITEN
Colour	White
Connector Type	Quick Connect
Country of Origin	China
Customer Reviews	4.2 4.2 out of 5 stars (65)
Exterior Finish	Stainless Steel
Item Dimensions	6.4 x 3 x 3.8 centimetres
Item Weight	30 Grams
Manufacturer	DIGITEN
Material	Plastic
Model Number	BuildingMaterials
Number of Packs	1
Number of Pieces	1
Part Number	FL-S402B
Size	6.4 x 3 x 3.8 cm
Thread Size	0.25 inch
Thread Type	BSPP
Unit Count	1.0 count

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€ 25.90

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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