Dräger Scio Four, Manual, Page: 14 / 258

English
14 Supplement Scio Four modules
Connector 9-pole Sub-D, galvanically isolated 1.5 kV against internal electronics, 0.5 kV
against housing.
Baud rate 1200, 2400, 4800, 9600, 19200, 38400 baud
Data bits 8
Parity Even
Stop bits 1
Pin assignment
Pin 1, 4, 6, 7, 8, 9 Open
Pin 2 TXD
Pin 3 RXD
Pin 5 GND
Housing SHLD
Gas measurement
Method Sidestream gas measurement
All values are measured under ATPS conditions, sampling rate calibrated under
NTPD conditions.
The endtidal gas concentration is the value measured at the time of maximum CO
2
concentration in the expiratory phase.
Sampling rate 200 mL/min ±20 mL/min
Maximum time to empty water trap 41 hrs (sample gas under BTPS conditions, ambient air 23 °C)
Gas leakage <10 mL/min
Data sample rate <50 ms
Delay time <2.4 s
Total system response time <3 s
Sum of delay time and gas-specific rise time (T10...90)
Cross sensitivity <0.2 Vol% for volatile agents, CO
2
, and N
2
O
<1 Vol% for O
2
against ethanol (<3000 ppm), isopropanol (<10000 ppm), acetone (<1000 ppm),
methane (<1000 ppm), saturated humidity at 37 °C
Drift Compensated by automated cyclical zeroing
O
21)
2)
Range 0 to 100 Vol%
Accuracy ±(2.5 Vol% + 2.5 % rel.)
Rise time (T10...90) <500 ms
CO
21) 2)
Range 0 to 10 Vol%
Accuracy ±(0.43 Vol% + 8 % rel.)
Rise time (T10...90) <300 ms
N
2
O
1) 2)
Range 0 to 100 Vol%
Accuracy ±(2 Vol% + 8 % rel.)
Rise time (T10...90) <300 ms
Anesthetic agents
1) 2)
Range
Halothane 0 to 8.5 Vol%
Isoflurane 0 to 8.5 Vol%
Enflurane 0 to 10 Vol%
Sevoflurane 0 to 10 Vol%
Desflurane 0 to 20 Vol%
Accuracy ±(0.20 Vol% + 15 % rel.)