During laboratory evaluation, the product surveillance technician (pst) observed the electronic patient gas system (epgs) to function as intended.The epgs was connected to a system 1 simulator and a central control monitor (ccm), attaching oxygen (o2) and air at 50 pounds 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 1.79 volts, which was within the specification of 0.757-2.551 volts.The unit was calibrate four more times with the output voltage being 1.79 to 1.80 volts.
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