Testo 350 Calibration - Actoolsupply.com

www.actoolsupply.com3. Hardware for adjustmentand control (material composition)The materials in the hardware that is used must satisfy the followingcriteria:The pressure reducer fittings and pipes to and from the gas bottlesshould be made of stainless steel (reason: aggressive, corrosivegases). In the case of bottles with a brass outer thread (e.g. forCO, CO 2), the pressure regulator can be made of brass for reasonsof cost.In the case of reactive gases such as NO 2, SO 2, the hose materialused must have a negligible level of absorption. Recommendedmaterials: Teflon ® (PTFE), Viton ® , Tygon ® or C-Flex ® .Admitting gas into an analyserGas should be admitted into the flue gas analyser unpressurised ifat all possible. Ideally, a bypass with indication of the test gas overflowwill be used for admission (measuring range 0...2 litres/minute).This gas flow meter (flowmeter) will help to ensure both thatno ambient air is taken in and that test gas is not unnecessarily“wasted” through the bypass outlet.Pressure reducerp