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  In the analysis of steel with SDAR and manual operation, the following manipulations have been carried out:

  1^st sparking

  Lift the sample arm

  Remove “sealing sample”

  Position analysis samples

  Lower sample arm

  Input sample number

  Start

  Flush

  Pre-spark

  Measure1+2(spark-like)

  Read-out, evaluate and output the 1^st sparking

  Raise sample arm

  Remove analysis sample; look at burn spot; position analysis sample

  Lower sample arm

  2^nd sparking

  Start

  Flush

  Pre-spark

  Measure 1+2

  Read-out, evaluate and output the 2^nd sparking

  Automatic check on precision of individual values, if ok

  Calculate and output mean value

  Total for analysis with double sparking

  If precision of individual value is not ok

  3^rd sparking

  Raise sample arm

  Remove analysis sample；look at burn spot; position analysis sample

  Lower sample arm

  Start

  Flush

  Pre-spark

  Measure 1+2

  Read-out, evaluate and output 3^rd sparking

  Automatic check on precision of individual values

  If ok

  Calculate mean value with triple sparking

  Total for analysis with triple sparking