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Sewing machine

Belongs to:
Kitchenware and household appliances
Description:

A sewing machinge is an electric household appliance for creating a seam in order to combine two or more textiles. The alternating electric and magnetic fields at the fundamental frequency of 50 Hz resp. 60 Hz are caused by a motor which enables the vertical translation of the sewing needle and the rotation of the thread loop.

Frequency ranges:
  • 50–60 Hz
Type of field:
electric and magnetic

Measurements (acc. to literature)

Measurand Value Feature Remarks
magnetic flux density 0.11 µT (measured) - in front of the abdomen while the device is switched on [1]
magnetic flux density 0.26 µT (measured) - in front of the abdomen [2]
magnetic flux density 0.261 µT (measured) - in front of the abdomen while sewing [1]
magnetic flux density 5 µT (maximum, measured) - after switching the device on [1]
magnetic flux density 166 µT (maximum, measured) - at the surface [3]
magnetic flux density 170–1,000 µT (mean, measured) - range resulting from the measurement of two different davices [4]

References

  1. Kaune WT et al. (2002): Magnetic fields produced by hand held hair dryers, stereo headsets, home sewing machines, and electric clocks
  2. Behrens T et al. (2004): Quantification of lifetime accumulated ELF-EMF exposure from household appliances in the context of a retrospective epidemiological case-control study
  3. Leitgeb N et al. (2008): Magnetic emission ranking of electrical appliances. A comprehensive market survey
  4. Leitgeb N et al. (2008): Magnetic emissions of electric appliances