9 Appendix
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115
Short time exposure limit (STEL)
Product of the occupational exposure limit value and the ex-
cess factor over an averaging period of 15 minutes.
Stabilisation time
Time required by an oxygen sensor to produce no major de-
viations of more than ±1 % of the measuring range across 3
consecutive readings read at intervals of 2 minutes. (Source:
User
General name for the user of the device, regardless of mem-
bership of a user group.
Warm-up time
Time taken by a sensor to become operational.
