43
OxyMag_rev26
Effects of Gas and Steam Interference:
Xe (Xenon)
80 vol%
-10% measurement read.
(3)
He (Helium)
50 vol%
-6% measurement read.
(3)
Propellant inhaler with dosimeter
Not designed for use with propellant inhaler with dosimeter.
C
2
H
5
OH (Ethanol)
0,3 vol%
---
(1)
C
3
H
7
OH (Isopropanol)
0,5 vol%
---
(1)
CH
3
COCH
3
(Acetone)
1 vol%
---
(1)
CH
4
(Methane)
3 vol%
---
(1)
CO (Carbon Monoxide)
1 vol%
---
(1)
NO (Nitrogen Monoxide)
0,02 vol%
---
(1)
O
2
21 vol%
0% measurement read.
5.0 vol%
(2)
50 vol%
-2,76% measurement
read.
4.9 vol%
(2)
70 vol%
-4,67% measurement
read.
4.8 vol%
(2)
95 vol%
-7,05% measurement
read.
4.7 vol%
(2)
NOTE
1:
NEGLIGIBLE
INTERFERENCE.
INTERFERENCE
EFFECTS
DO
NOT
CHANGE
VALUES
IN
TABLE
“PRECISION
/
ACCURACY
OF
MEASUREMENTS
(UNDER
ALL
CONDITIONS)”
ABOVE.
NOTE
2:
VALUE
SHOWN
FOR
ACTUAL
CONCENTRATION
OF
5.0%
CO2
NOTE
3:
INTERFERENCE
AT
THE
GAS
LEVEL
INDICATED.
FOR
EXAMPLE,
50
VOL%
HELIUM
TYPICALLY
LOWER
THE
VALUES
READ
AT
CO2
6%.
THIS
MEANS
THAT,
IF
THE
MIXTURE
CONTAINS
5.0
VOL%
CO2
AND
50
VOL%
HELIUM,
THE
CO2
CONCENTRATION
WILL
BE
NORMALLY
CALCULATED
AS:
(1
–
0.06)
*
5.0
VOL%
=
4.7
VOL%
CO2.
NOTE
4:
ACCORDING
EN
ISO
21647:2014
Table 18
–
Quantitative effects of moisture and condensation
Temp
[C]
RH [%]
P [hPa]
H
2
O part.pres
[hpa]
Err
rel
[%]
Err
rel
ATPD
[%]
Err
rel
[%]
BTPS
10
20
1013
2
0
-0,2
+6,0
20
20
1013
5
0
-0,5
+5,7
25
0
1013
0 (ATPD)
0
0
+6,2
