Supplement for Infinity Delta Series Software
104
Supplement – Infinity
®
Delta Series Software VF10.1
How Performance is affected by Barometric Pressure
:
Rise time
<35 ms
Delay time
<165 ms
Time until availability
<10 s
Data sample rate
Sensor: 20 ms
Display update period
2 s
Time until specified accuracy is attained
<120 s (at 23 °C (73 °F))
Measurement accuracy drift
Over 6 hours is <0.03 Vol% at 5 Vol% CO
2
How performance is affected by
humidity/condensate
The cuvette windows are indirectly heated through the
sensor to prevent moisture condensation. Water droplets
and other window contamination may slightly influence
measurement bias, up to 0.3 Vol% at 5 Vol% CO
2
at worst
(normally much less).
If measurement light is blocked so the noise of the reading
gets too high, an error message is displayed by the monitor
indicating that the cuvette must be checked (cleaned or
replaced).
How performance is affected by cyclical
pressures up to 10 kPa (100 cmH2O)
No effect
Compensation
Atm. Pressure
: user-selectable; 540 to 800 mmHg (72-
106.7 kPa)
Gas Compensation
: user-selectable;
Air
, N
2
O/O
2
,
O
2
>60%, HeliOx
NOTE regarding Gas Compensation:
Selection for
Gas Compensation
must be made for the
automatic correction of the influence of a balance gas.
Description
Value
The user has to manually set the total gas pressure (ambient or barometric pressure) in the monitor, the
mainstream CO
2
sensor uses to automatically compensate for pressure effects.
The remaining bias error is less than 2% of reading (i.e., 2% relative) for ambient pressures between 57
and 110 kPa, which error includes imperfection of foreign gas compensation (O2, N2O, He)
When users select the atmospheric pressure, the Dräger mainstream CO
2
module incorporates
compensation for pressure effects in accordance to the following table:
CO
2
* value prior to
correct Atm pressure
Correction Factors for Atmospheric Pressure
Atm. pr.
106.3 kPa
Atm. pr.
101.3 kPa
Atm. pr.
96.3 kPa
Atm. pr.
91.3 kPa
Atm. pr.
86.3 kPa
Atm. pr.
81.3 kPa
1 kPa (7.5 mmHg)
0.981
1
1.020
1.042
1.066
1.093
5 kPa (37.5 mmHg)
0.969
1
1.033
1.069
1.0109
1.153
10 kPa (75.0 mmHg)
0.969
1
1.033
1.070
1.110
1.155
NOTE:
This table is applicable to the Gas Compensation of Air.
