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Updated: May 13, 2026

Mechanical Ventilation Boot Camp Curriculum
Published on: March 12, 2018
Upgraded software changes the oxygen sensor calibration procedure in Covidien's Puritan Bennett 840 ventilator
Abstract:
Users need to be aware that once Covidien's Puritan Bennett 840 ventilators have received upgraded software for the neonatal configuration, a different procedure will usually be required when calibrating the units' oxygen sensor for neonatal use. Since the function of the previous "100% O2/cal 2 min" key--which some users employed for this calibration--has now changed, users should instead perform calibration through the "More Settings" menu.
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