Dräger Primus SW 4.5n Instructions For Use Manual page 254

Technical Data
Anesthetic agent detection
Primary agent
Secondary agent
Cross sensitivity
Drift of measurement accuracy
Zeroing interval
Devices with O sensor cells
2
Devices with paramagnetic O
2)
measurement
Maximum time until emptying of the water
trap is necessary
Consumption measurement
Fresh-gas consumption per case
Accuracy
Resolution
Total agent consumption per case
(liquid)
Accuracy
Resolution
1) Exception: At a Desflurane concentration of more than 4 Vol% a mixture will be detected at the latest when the concen-
tration of the second anesthetic gas increases to over 10 % of the Desflurane concentration.
2) The respective value depends on the PGM used which is displayed on System Information page.
254
Automatic
Min. 0.3 Vol% (typically 0.15 Vol%)
At the latest: at 0.4 Vol%
becomes primary agent if expiratory xMAC is more than
0.2 MAC above the former primary agent
None referring to alcohol (<3000 ppm),
acetone (<1000 ppm), methane, water vapor, NO, and CO
Compensated by cyclic zeroing. Zeroing is performed auto-
matically and with ambient air. This means there is minimal
change to the gas concentrations in the breathing circuit.
8 hours
24 hours
2
41 h (sample gas under BTPS conditions, at 23 °C ambient
temperature)
0 to 9999 L per gas (O
the gas mixer is taken into account)
±10 % or ±1 L, the greater value applies
1 L
0 to 3000 ml per agent (Halothane, Isoflurane, Enflurane,
Sevoflurane, Desflurane)
Typically ±25 % or ±2 mL, the greater value applies
1 mL
1)
,
2 hours
, N O, AIR; only fresh gas applied by
2 2
Instructions for use Primus SW 4.5n