This gas meter is connected to hose to measure unidirectional gas flow. Made of high quality acrylic, it is transparent and can hold up to 0.6MPa pressure. It is simple to use, and has 8mm barbs for convenient connection to hoses. Can measure blast furnace gas, coke oven gas, coal gas, air, nitrogen, acetylene, phosgene, hydrogen, natural gas, liquefied petroleum gas, hydrogen peroxide, flue gas, methane, butane, chlorine gas, methane, carbon dioxide, oxygen, compressed air, argon, toluene, benzene, xylene, hydrogen sulfide, sulfur dioxide, ammonia, etc. Mainly used for detecting the oxygen flow, control oxygen flow and can be used in industry. LZQ-2 0-3LPM Specifications: Material: Acrylic+plastic+metalConnection: 8mm hose barbAccuracy: 5%Range: 0~3LPMPressure: ≤0.6MPa (recommended 101.3KPa)Temperature: 0~60°C Package Includes: 1 x Gas Flowmeter LZQ-7 2-20LPM Specifications: Material: Acrylic+plastic+metalConnection: 8mm hose barbAccuracy: 5%Range: 2~20LPMPressure: ≤0.6MPa (recommended 101.3KPa)Temperature: 0~60°C Package Includes: 1 x Gas Flowmeter LZQ-7 1-10LPM Specifications: Material: Acrylic+plastic+metalConnection: 8mm hose barbAccuracy: 5%Range: 1~10LPMPressure: ≤0.6MPa (recommended 101.3KPa)Temperature: 0~60°C Package Includes: 1 x Gas Flowmeter LZQ-5 2.5-25LPM Specifications: Material: Acrylic+plastic+metalConnection: 8mm hose barbAccuracy: 5%Range: 2.5~25LPMPressure: ≤0.6MPa (recommended 101.3KPa)Temperature: 0~60°C Package Includes: 1 x Gas Flowmeter LZQ-2 LZQ-7 LZQ-7 LZQ-5 Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.0 out of 5 stars 28 3.7 out of 5 stars 27 4.2 out of 5 stars 92 4.5 out of 5 stars 26 Price $11.62$11.62 $13.92$13.92 $17.20$17.20 $14.00$14.00 Range 0-3LPM 2-20LPM 1-10LPM 2.5-25LPM Connection 8mm hose barb 8mm hose barb 8mm hose barb 8mm hose barb