PortaSens II
Gas Detector
C16 Leak Detector
O & M Manual
Rev. G, 11/07
- 12 -
SENSOR TYPE
H
2
H
2
O
2
O
2
NO
NO
2
Hydride
SiH
4
COCl
2
H-C
NH
3
N
N
N
N
N
N
N
N
N
CO
0.1
0.005
N
N
0.001
N
N
N
0.3
H
2
--
0.01
N
0.001
0.001
0.00002
0.001
N
0.05
I
NO
N
1.5
N
--
N
N
0.3
-0.1
0.8
N
O
2
*
*
--
*
*
*
*
N
*
T
Cl
2
N
N
N
N
0.5
N
N
0.1
N
E
O
3
N
N
N
N
0.65
N
N
N
N
R
HCl
N
0.1
N
N
-0.3
N
N
0.05
0.2
F
HCN
N
0.1
N
N
-0.07
N
N
0.5
0.1
E
HF
N
N
N
N
N
N
N
N
N
R
H
2
S
N
6
N
N
-2.5
N
N
N
2
E
NO
2
N
0.1
N
N
--
N
N
-1
0.1
N
SO
2
N
0.42
N
N
-1
N
N
0.2
0.4
C
Hydride
N
6
N
1
-2
--
1
N
2
E
SiH
4
N
6
N
1
-2
1
--
N
2
CO
2
N
N
N
N
N
N
N
N
N
CH
4
N
N
N
N
N
N
N
N
N
CH
3
SH
N
2
N
N
-0.8
N
N
N
1
C
2
H
2
0.1
0.02
N
0.05
N
0.00005
0.005
N
1.2
C
2
H
4
0.1
N
N
N
N
N
N
N
1
C
2
H
6
O
N
0.1
N
0.001
0.001
0.00001
0.01
N
0.7
Interference Table Notes:
1. Sensors marked with an asterisk (*) in the oxygen column are 3 electrode sensors that
require a minimum of 5% oxygen to operate properly. Hydrogen sensors require oxygen
levels at least two times the maximum percent hydrogen value to be measured.
2. The data on the chlorine sensor also applies to bromine, chlorine dioxide, fluorine, and iodine
sensors.
3. Data on the hydride sensor refers to arsine, phosphine, diborane, hydrogen selenide, and
germane sensors. Response is not exactly 1:1 for all hydrides. Contact ATI for details if
exact response is needed.
4. The sensor column marked “H-C” stands for hydrocarbon sensors. These include ETO
(ethylene oxide), formaldehyde, alcohol, acetylene and vinyl chloride sensors.
5. Data presented in this table represent exposure of gas sensors to low PPM levels of the
interfering gas. Very high concentrations of any interfering gas may cause either short term
or long term response from a sensor.
6. Interference factors may vary over sensor lifetime. Calibration with interference gas is not
recommended in most cases. Consult ATI.