what can be done to get accurate readings? the one i received is 35% low. 4lpm reads 2.5lpm. this is no mistake as i checked it with 4 sources.

Throw it away and buy something more substantial. These are junk.

Are the connectors the correct size to use with medical 02 flared female ends of canula & long line?

it is a 1/4 fitting on the flow meter. O2 hose is about an 1/8 inch so it is a tight squeeze. Best bet is to get a plastic reducer coupling available on Amazon.com. Get a 1/4 by 1/8 barb reducer and go to you local hardware store and get a 1 foot length of some 1/4 ID clear tubing and couple it that way. You can use small zip ties as hose clamps if you need to.

Can this regulate to a 1L/m flow from a gas cannister that has 2000psia?

No would not be safe. you would have to incorporate a pressure regulator between the 2000 PSI and the plastic flow meter. refer the manufacture for the maximum pressure rating.

I am using a 1/4 inch O.D. copper tubing but I am not sure if it could use it to connect with this flow meter

Maybe you could use a short piece of rubber or PVC tubing

Oxygen Flow Meter 0 5 Lpm Acylic Flowmeter Gas Acrylic

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Description

🌬️ Flow with precision, connect with confidence!

WIDE OPERATING CONDITIONS - Reliable performance from 0 to 60°C and up to 0.6 MPa pressure keeps your workflow uninterrupted.
ACCURATE OXYGEN FLOW CONTROL - Maintain precise oxygen delivery with ±5% accuracy for critical applications.
COMPACT LIGHTWEIGHT DESIGN - At just 2.5 ounces and 65.5mm center distance, it fits perfectly in tight spaces without bulk.
DURABLE ACRYLIC METAL BUILD - Robust construction ensures long-lasting performance in industrial and medical environments.
UNIVERSAL 8 MM HOSE CONNECTION - Effortlessly integrates with standard tubing for quick setup and seamless operation.

This Oxygen Flow Meter offers precise measurement of gas flow from 0 to 5 LPM with 5% accuracy, featuring a durable acrylic and metal design. Its universal 8mm hose barb connection and compact size make it ideal for both industrial and medical oxygen control applications, operating reliably within 0-60°C and up to 0.6 MPa pressure.

Specifications

ASIN	B019YS4PSG
Best Sellers Rank	#94,833 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #51 in Flowmeters
Customer Reviews	4.4 4.4 out of 5 stars (78)
Date First Available	December 30, 2015
Item Weight	2.5 ounces
Item model number	B4
Manufacturer	yqltd
Material	plastic
Package Dimensions	4.41 x 3.11 x 1.42 inches
Part Number	B4

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₨12170

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Oxygen Flow Meter 0-5 LPM Acylic Flowmeter Gas Acrylic Metal Fitting for Oxygen Air Gas Conectrator

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