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241 views Technical Discussions Dipl.-Ing. Martin Heinz Dipl.-Ing. Martin Heinz 06:24 May-29-2000 Damping coefficient of sound in natural gas? Dear friends, does anybody know the damping coefficient of sound in natural gas (frequency about 220 kHz, normal atmospheric pressure and alternatively a pressure of 200 bar)? Thank you and best regards, Martin.                  Reply  Translate  Close   Product Spotlight Ultrasonic Flaw Detector & Thickness Gauge: Smartor StandSIUI (Shantou Institute of Ultrasonic Instruments Co.,Ltd) SIUI’s newly launched Smartor is a combination of ultrasonic testing and ultrasonic thickness me ... asurement. ●IP 66 ●Compact size: 198 (W)* 128 (H) *520 (D) mm ●0.9kg only with battery ●5.7" LCD with high resolution 640×480 pixels ●One-hand operation ●Multiple conventional UT functions ●Smart Test Wizard ●Weld Simulation > 6 Showcases4 Videos ISAFE3 Intrinsically Safe Sensor System StandVallen-Systeme GmbH ISAFE3 intrinsically safe sensor system of Vallen Systeme is especially targeted at the petrochemica ... l - as well as oil and gas transportation industry. The sensor system is designed for permanent monitoring or periodic inspection tasks. Sensors are available for different AE-frequency ranges optimized for corrosion and fatigue crack detection and other applications. The ISAFE 3 sensor system consists of an AE-sensor (model ISAS3) certified according to ATEX/IEC for installation in zone 0, gas group IIC, IP68, 20 to +60 °C, and a signal isolator (model SISO3) certified for installation in zone 2. An ISAS3 sensor can be mounted in atmosphere or submerged, e.g. in water or crude oil. It is supported by mounting tools for temporary (magnets) or permanent (welded) installation. ISAFE3 supports automatic sensor coupling test and can be used with any AE signal processor supporting 28V supply at 90 mA peak, e.g. Vallen Systeme ASIP-2/A. > 2 Showcases TVC awarded UKAS accreditation StandThe Validation Centre (TVC) Ltd TVC are delighted to finally announce we have been awarded UKAS accreditation for our calibration ... laboratory. Laboratory accreditation to ISO/IEC 17025:2005 enables us to conduct the Electrical Verification of Ultrasonic Flaw Detection Equipment to BS EN 12668-1:2010. It has taken many months of hard work and we want to thank our staff for all their efforts during this massive undertaking. > 2 Showcases4 Videos Echomac® PA Rail Wheel Tester StandMagnetic Analysis Corporation MAC introduces two versions of Rail Wheel Testers using ECHOMAC® PA platform based on customer requ ... irements. > 3 Showcases4 Videos more Showcases Share... Home Exhibition Archive Forum Jobs MyNDT Network Events Directory NDT A-Z Advertise Privacy Policy Contact About © NDT.net - Where expertise comes together. The Largest Open Access Portal of Nondestructive Testing (NDT)- since 1996 We use technical and analytics cookies to ensure that we will give you the best experience of our website - More Info Accept top this is debug window s