--- product_id: 58949646 title: "Oxygen Rotameter | Flow Range: 3-30 LPM | with Flow-Control Knob" brand: "cnbtr" price: "฿2488" currency: THB in_stock: true category: "Cnbtr" url: https://www.desertcart.co.th/products/58949646-oxygen-rotameter-flow-range-3-30-lpm-with-flow-control store_origin: TH region: Thailand --- # Compact 120mm height, sleek vertical mount Flow-control knob for exact regulation 3-30 LPM precise flow range Oxygen Rotameter | Flow Range: 3-30 LPM | with Flow-Control Knob **Brand:** cnbtr **Price:** ฿2488 **Availability:** ✅ In Stock ## Summary > ⚡ Master your flow, own your space. ## Quick Answers - **What is this?** Oxygen Rotameter | Flow Range: 3-30 LPM | with Flow-Control Knob by cnbtr - **How much does it cost?** ฿2488 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.th](https://www.desertcart.co.th/products/58949646-oxygen-rotameter-flow-range-3-30-lpm-with-flow-control) ## Best For - cnbtr enthusiasts ## Why This Product - Trusted cnbtr brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Durable Acrylic Build:** Robust rectangular acrylic body ensures long-lasting clarity and reliability in demanding environments. - • **Precision Flow Control:** Easily adjust oxygen flow from 3 to 30 LPM with a smooth, intuitive knob for flawless calibration. - • **Trusted by Professionals:** Highly rated with 4.5 stars from 52 users who rely on it for precision airflow in critical applications. - • **Space-Savvy Vertical Design:** Sleek vertical installation with back fittings keeps your setup clean and tangle-free—perfect for modern instrument panels. - • **Versatile Gas Compatibility:** Calibrated for oxygen but adaptable to other gases with simple conversion—flexibility that fits your evolving needs. ## Overview The CNBTR Oxygen Rotameter offers precise oxygen flow measurement from 3 to 30 LPM with an easy-to-use flow-control knob. Its compact vertical design with back fittings ensures a clean, professional installation. Calibrated primarily for oxygen, it can be adapted for other gases with conversion factors, making it a versatile and reliable tool favored by professionals for accurate gas flow management. ## Description Buy CNBTR Oxygen Rotameter | Flow Range: 3-30 LPM | with Flow-Control Knob | Acrylic Rectangular Body | Overall Height: 120mm | Width: 72mm | Back Fitting Style Variable Area Flow Meter for Gases: Flowmeters - desertcart.com ✓ FREE DELIVERY possible on eligible purchases ## Features - OXYGEN FLOW RATE: 3 to 30 LPM Flow Range. As oxygen flows through, it pushes an indicator up the scale, showing you the flow rate. - VERTICAL INSTALLATION: Mount this flow meter vertically inline with your oxygen system, so oxygen flows up from the bottom. - FLOW-CONTROL KNOB: The flow-control knob lets you open and close the valve at the inlet to regulate the flow rate within the range. - BACK FITTING STYLE: Fittings on the back let you install these flowmeters in instrument panels. Mount them vertically inline with your piping system, so that to avoid the tube tangles and a clean and sleek flowmeter for oxygen. - OTHER GAS MEASUREMENT: This flowmeter is calibrated with oxygen but can be used with other gases. If you’re using these with a gas other than oxygen, you’ll need to calculate the flow rate by multiplying the number shown on the scale by the specific-gravity conversion factor for the gas. - GAS COMPATIBILITY NOTICE: Gas compatibility must be determined by the customer based on the conditions in which the product is being used, including the presence of other chemicals, temperature, and consistency. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01D49PA58 | | Best Sellers Rank | #166,171 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #108 in Flowmeters | | Date First Available | June 29, 2016 | | Item Weight | 3.53 ounces | | Item model number | CNBTR51 | | Manufacturer | YQLTD | | Package Dimensions | 5.08 x 3.11 x 1.46 inches | ## Product Details - **Material:** Plastic - **Shank Diameter:** 0.25 Inches - **Finish Type:** Uncoated - **Shank Type:** Hex - **Brand:** CNBTR ## Images ![Oxygen Rotameter | Flow Range: 3-30 LPM | with Flow-Control Knob - Image 1](https://m.media-amazon.com/images/I/611M-NpeUJL.jpg) ## Questions & Answers **Q: Hello, I'm looking for a flowmeter that can give a steady 1L/m from a compressed gas cylinder with 2000psi, can this product do that?** A: This is not the flowmeter for that range. If you look at the bottom of the range, you will see that the last marking is 3 LPM. Secondly, you do not say what the input pressure is? If it is 2,000 psi, you would blow this and most any other flowmeter to bits and possibly injure yourself or others. The maximum working pressure is listed in the specifications is "Working pressure: ≤0.6Mpa," which is 87 psi. I use it on a CO2 cylinder with a reduction valve so that the max pressure is no more than 40 psi at the flowmeter. Even then I had to reseal the fitting at the bottom of the meter in order to stop a slow leak. Cost me a tank of gas before I figured that one out. I am not so much interested in the actual reading as to know whether or not gas is flowing, so the gauge calibration, which is for oxygen, is not particularly applicable to my use. BTW, the absolute kinematic viscosity of carbon dioxide at 20°C is 1.47 x 10-5 Pa s vs oxygen at 20°C, which is 2.04 x 10-5 Pa s. So the gauge would read about 28% low for my application. YMMV. ## Frequently Bought Together - CNBTR Multicolor Acrylic 3-30LPM LZQ-7 Oxygen Air Gas Flowmeter with Control Valve for Oxygen Adjustable - JIAWANSHUN Oxygen Air Flow Meter 0.1-1.5LPM Gas Flow Regulator Gas Flowmeter with Copper Connector - Watris Veiyi LZQ-7 Oxygen Air Gas Flow Meter, 1-10LPM Air Gas Flowmeter with Control Valve for Measuring Controlling Gas Flow --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.th/products/58949646-oxygen-rotameter-flow-range-3-30-lpm-with-flow-control](https://www.desertcart.co.th/products/58949646-oxygen-rotameter-flow-range-3-30-lpm-with-flow-control) --- *Product available on Desertcart Thailand* *Store origin: TH* *Last updated: 2026-10-30*