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SBG01 heat flux meter

SBG01 heat flux meter
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SBG01 WATER COOLED HEAT FLUX SENSOR ACCORDING TO SCHMIDT-BOELTER SBG01 is a water-cooled heat flux sensor. The ISO standards call this heat flux meter. Its main purpose is the study of reaction to fire and fire resistance, applied for instance in flammability tests and smoke chamber tests. SBG01 measurements are in accordance with various ASTM and ISO standards. SBG01 is on the market since 2008, and has rapidly become the sensor of choice for fire testing laboratories. INTRODUCTION SBG01 serves to measure the heat flux in the range up to 200 kW/m2. Heat flux sensors of this type are originally designed to work in an environment that is dominated by radiation (so above 50 kW/m2). Application in environments with lower irradiance levels and with much convection should be done with care. Working completely passive, using a thermopile sensor, SBG01 generates an output voltage proportional to the incoming flux. The sensor is water cooled. There are 6 types of SBG01; with different working range, sensitivity and response time. Comparing to traditional Gardon and Schmidt Boelter gauges, SBG01 has several advantages: tubes with increased robustness increased scratch resistance of absorber paint (slightly lowered surface) practical protection cap The measurement uncertainty of SBG should be determined case by case. It is a function of: 1. meter/sensor properties 2. calibration traceability of and quality assurance of the local reference at the user 3. quality assurance of calibration of SBG field meters or "working standards" in day to day measurements 4. measurement-related uncertainties, for instance caused by convection Figure 1 SBG01 from top to bottom: 3D view, side view, top view. Dimensions in mm. Coated sensing element (1), water cooling tube (2), Outer diameter tube: 4,2 mm, signal cable (3). Standard cable length is 2 m. Hukseflux provides traceable calibration (our secondary standard is calibrated at the Statens Provningsanstalt (SP), Sweden and by definition is thereby also traceable to NIST). Hukseflux is not a “certified lab”; if required, the user is responsible to maintain certified traceability. V ers io n 1109 (page 1 of 2 ) Huks ef lux re serv es the r ig ht to alter s pec if ic atio ns w ithout pr ior no tic e H UKS EFL UX ™ THER MAL S ENSORS . WW W .HU KS EFLU X .CO M . INFO @HU KS EF LU X.CO M

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ISO/ASME STANDARDISATION Heat flux sensors (officially “heat flux meters”) like SBG are nowadays subject to standardisation according to ISO TS 14934 “Reaction-to-Fire tests-calibration of heat flux meters”. This standard will also be adopted by ASME. In case a user wishes to perform certified testing or works in an ISO certified organisation, the following is relevant: The ISO 14934 standard has 4 parts: 1. general principles 2. primary calibration methods 3. secondary calibration methods 4. guidance on use of heat flux meters The most important practical consequences of the standards are:...

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