AWS C3.6M/C3.6:2016 pdf free download

AWS C3.6M/C3.6:2016 pdf free download.Specification for Furnace Brazing.
5.2.3 Load Sensors. Workload control thermocouples shall bc of a type listed in ASTM E2301E230M. Standard Specification and Temperaiure-Eleciroinoiiie h)rce (en!!) Tables jr Standardized Thermocouples. They shall be calibrated by companson to a known calibrated lest instrument traceable to the National Institute of Standards and Technology with the frequency specified by SAE AMS 2750 and replaced as required.
5.2.4 Control Sensors. Control sensors shall be of a type listed in ASTM E230/230M. They shall be calibrated by a comparison to a known calibrated instrument traceable to the National Institute of Standards and Technology with the frequency specified by SAE AMS 2750 and replaced as required.
5.2.5 Atmosphere-Controlling Instruments
5.2.5.1 Electronic Dew Point Measuring Devices. Electronic dew point measuring devices shall be calibrated in accordance with the manufacturer’s recommendations against reference devices traceable to the National Institute of Standards and Technology, or equivalent. Such gauges shall be calibrated in accordance with NCSL Z540.3 before initial use and recalibrated at a frequency not to exceed six months.
5.2.5.2 Vacuum Measuring Devices. Thermocouple gauges shall be used to measure pressure higher than 0.13 Pa I l0 torn. Suitable electronic gauges shall be used to measure pressures of 0. 13 Pa I iO torn or less. These gauges shall be so mounted as to measure the pressure within the work zone of the furnace. Suitable instruments for reading and recording the pressure within the furnace work zone shall also be provided.
These instruments and gauges shall be calibrated in accordance with the manufacturer’s recommendations against reference standards traceable to the National Institute of Standards and Technology. Such gauges shall be calibrated in accordance with NCSL Z540.3 beft)re initial use and recalibrated at a frequency not to exceed six months.
5.2.5.3 Oxygen-Sensing Device. Oxygen-sensing devices, when used, shall be used to indicate the presence and the quantity of oxygen within the brazing furnace’s interior. When a multiple-zone brazing furnace is employed, the oxygen-sensing device shall have a pick-up point in each zone, as specified in the BPS.
This device shall be calibrated in accordance with the manufacturer’s recommendations or using a sampling gas that includes a known quantity of oxygen and as needed thereater in accordance with NCSL Z540.3.
5.2.5.4 Residual Gas Analyzer (RGA). Residual gas analyzers. when used, shall be employed to measure partial pressures of gases present in the braze furnace interior, some of which may be contaminants within the braze furnace’s interior. When a multiple-zone brazing furnace is utilized, the RGA device shall have a pick-up point in each zone, as specified in the BPS.AWS C3.6M/C3.6:2016 pdf free download.