During laboratory evaluation, the product surveillance technician (pst) observed there to be no calibration or "service gas system" error messages.The electronic patient gas system (epgs) was connected to a system 1 simulator and a central control monitor (ccm) attaching oxygen (o2) and air at 50 per square inch (psi).After the 15 minute warm-up period, calibration was initiated and passed.The measurement of the direct current (dc) output voltage from the o2 sensor at 5 liters per minute (l/min) and 100% o2 was 1.70 volts, which was within the specification of.55-2.758 volts.The unit was calibrate six more times with no failures detected.If additional information becomes available on this complaint that would alter the facts and/or conclusion, a supplemental report will be filed accordingly.
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