A coffee machine is an electrically driven kitchen appliance for making coffee, using principles of thermal extraction and filtration. The alternating magnetic field at the fundamental frequency of 50 Hz resp. 60 Hz is caused by the electrically driven heating process heating water inside the heating pump.
Unless otherwise stated, the operating frequency confirms with measured frequency, i.e. the measurement was performed at the operating frequency of the coffee machine.
Measurand | Value | Feature | Remarks |
---|---|---|---|
magnetic flux density | 0.001885 µT (mean, measured) | - | spatially averaged value at distances from 30 cm - 3.05 m ^{ [1] } |
magnetic flux density | 0.1 µT (maximum, measured) | - | at a distance of 30.48 cm ^{ [2] } |
magnetic flux density | 0.01–0.04 µT (mean, measured) | - | at a distance of 1 m |
magnetic flux density | 0.02 µT (mean, measured) | - | average value of 2 coffee machines at a distance of 100 cm; measurement bandwidth: 40 - 800 Hz ^{ [3] } |
magnetic flux density | 0.03 µT (maximum, measured) | - | at a distance of 80 cm ^{ [4] } |
magnetic flux density | 0.06 µT (mean, measured) | - | average value of 2 coffee machines at a distance of 50 cm; measurement bandwidth: 40 - 800 Hz ^{ [3] } |
magnetic flux density | 0.1–0.2 µT (mean, measured) | - | at a distance of 30 cm |
magnetic flux density | 0.19 µT (mean, measured) | - | during usage ^{ [5] } |
magnetic flux density | 0.2 µT (maximum, measured) | - | at a distance of 40 cm ^{ [4] } |
magnetic flux density | 0.4–1 µT (measured) | - | at a distance of 15.24 cm ^{ [2] } |
magnetic flux density | 0.57 µT (mean, measured) | - | average value of 2 coffee machines at a distance of 5 cm; measurement bandwidth: 40 - 800 Hz ^{ [3] } |
magnetic flux density | 0.7 µT (mean, measured) | - | at a distance of 15.24 cm ^{ [2] } |
magnetic flux density | 1–10 µT (maximum) | - | at a distance of 3 cm |
magnetic flux density | 4 µT (maximum, measured) | - | directly in front of the device ^{ [4] } |
electric field strength | 60 V/m (maximum) | - | at a distance of 30 cm ^{ [6] } |
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