Welch Allyn Duet CO2 Module - User Manual User Manual
Page 58
Duet CO
2
Module OEM Implementation Manual
Page 58
Confidential
Welch Allyn OEM Technologies
ENVIRONMENTAL SPECIFICATIONS
Ambient Operating Range
Temperature
Humidity
Barometric Pressure
Pressure
Compensation
5
o
C – 50
o
C operating
(except mainstream sensor)
10
o
C – 40
o
C operating
(mainstream sensor)
15% – 95% RH operating (non-condensing)
428 mmHg – 790 mmHg (15,000 ft to –1,150 ft)
Continuous & automatic in mainstream and sidestream mode
Ambient Shipping/Storage
Range
Temperature
Humidity
-20
o
C to 60
o
C
0 – 95% RH (non-condensing)
INTERFACE SPECIFICATIONS
Input Power
+8.00 to +12.00 VDC regulated; 150 mV peak to peak ripple
Power Consumption
5 W (typical mainstream warm-up power @ 8 VDC)
2.8 W (typical mainstream operating mode @ 25
o
C average)
570 mW (typical non-measurement mode @ +8.00 VDC)
1.3 W (typical sidestream operating mode)
Communications Interface
Asynchronous serial
Data format 7E1 or 8E1 (configurable option)
9600 Baud
Full Duplex
Receive data line 5 V CMOS compatible
BTPS Compensation
Yes, host-selectable
N
2
0/O
2
/Desflurane
Compensation
Yes, host-selectable
Software Upgrades
Serial port download to FLASH memory
a.
Typical accuracy is based on the following:
Ambient temperature 22
o
C
Standard gas mixture of CO
2
in balance air; fully saturated at 33
o
C; water vapor pressure
38mmHg; Barometric pressure at 760 mmHg, sea level.
Additional sidestream conditions include CO
2
sample line 7 ft I.D. 0.055 in (1.4 mm);
Welch Allyn OEM Technologies Water trap P/N 002.71180 with low dead space receiver design;
Sample rate 175 ml/min; respiratory rate < 50 bpm, stable to +/- 3 bpm;
I/E ratio = 1:2.
Note: Sidestream accuracy derated between 5° to 15°C, and 45° to 50°C:.
±4mmHg
0 - 40mmHg
±10% of reading
41 - 99mmHg
Sidestream CO
2
accuracy is also affected at high breath rates, i.e. >50BPM, I:E ratio = 1:1.