Capnography (co2), Capnography (co – Welch Allyn Vital Signs Monitor, Propaq Encore - Quick Reference Guide User Manual

Page 114

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108

Specifications

Welch Allyn Propaq Encore Vital Signs Monitor

Capnography (CO

2

)

Characteristic

Specification

CO

2

display

Screen Display

CO

2

waveform and ETCO

2

and INCO

2

(when in alarm) numerics

Numeric Display Ranges

ETCO

2

0-99 mmHg, 0-13.2 kPa, 0-23.1%

INCO

2

8

a

-25 mmHg, 1.1

a

-5 kPa, 1.1

a

-5%

a.

Lower if in alarm.

Waveform Scale
(Maximum)

0-100 mmHg, 0-14 kPa, 0-14%

Units

mmHg, kPa,%; user-selectable

Sweep Speed

3.13, 6.25, 12.5 mm/sec; user-selectable

Response Modes

Fast

15 sec sampling time period

Normal 30 sec sampling time period
Slow

45 sec sampling time period

Gas Compensation

OFF

CO

2

value = calculated CO

2

value;

O

2

> 50%, No N

2

OCO

2

value = calculated CO

2

value x 1.03;

N

2

O > 50%

CO

2

value = calculated CO

2

value x 0.952

Alarm Limit Ranges

ETCO

2

0-99 mmHg, 0-13.2 kPa, 0-13.2%

INCO

2

2-25 mmHg, 0.2-5 kPa, % (no lower limit)

Resolution

1 mmHg

Accuracy

Mainstream

b

0-30 mmHg, ± 3 mmHg
31-99 mmHg, ± 10% of value

Sidestream

c

0-30 mmHg, ± 3 mmHg
31-99 mmHg, ± 10% of value

b.

Based on these airway conditions: sensor 42

°

airway adapter temperature = 33

°

C, water vapor pressure

= 38 mmHg; standard gas mixture = CO

2

in balance air, fully hydrated at 33

°

C; barometric pressure = 760

mmHg and flow = 60 ml/min.

c.

Based on the following additional airway conditions: Sample line = 7 ft, 0.055 in ID (2.13 m, 1.4 mm ID);
Sample flow rate = 175 ml/min; Welch Allyn watertrap (new/unused); Respiratory rate

50 bpm, stable

to

±

3 breaths/min; Inspired/Expired time ratio = 1:2. Barometric pressure = 760 mmHg.

Altitude Error

± 0.4%/1,000 ft (304.8 m)

Breath rate display

Screen Display

Numeric

Breath rate (BR) source

When CO

2

is active, CO

2

is the BR source.

Otherwise, RESP from ECG is the RR source.

Units

Breaths/Minute

Range

Adult/Ped0 (apnea), 2 to 150 breaths/min
Neonate0 (apnea), 3 to 150 breaths/min

Resolution

± 1 breaths/min

Accuracy

± 1 breaths/min or ± 5%, whichever is greater

d

d.

For sidestream CO2, this applies only for BR



50.

Alarm Limits Range

Adult/Ped2 to 150 breaths/min
Neonate3 to 150 breaths/min

CO

2

performance

Specification

Per ISO 21647:2004

Apnea alarms and tickets

Apnea Ticket

Set to auto print after apnea event and after 1 minute continued
apnea

Apnea Alarm Accuracy

± 2 sec

Apnea delay setting

Adult/Ped = 6, 10, 15, 20, 25, 30 seconds
Neonate = 6, 10, 15, 20 seconds

Barometric pressure

Pressure Compensation

Automatic

Operating Range

-2,000 to 15,000 ft (-610 to 4572 m), 817 to 429 mmHg

Screen Display

Numeric (CO

2

Status Window)

Units

mmHg or kPa

Accuracy

± 3 mmHg or 2.5% of difference from calibration pressure,
whichever is greater

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