User Manual
19
Sensors sensitivity settings
Settings recommended by Erlab
Halo Smart – VOC version
Chemical products
PEL/TWA 8H
(ppm)
PEL/STEL
(ppm)
High
sensitivity
(ppm)
Medium high
sensitivity
(ppm)
Medium
sensitivity
(ppm)
Low Medium
sensitivity
(ppm)
Low
sensitivity
(ppm)
Ammonia
10
20
10
15
25
Hexane
20
1
2
5
15
20
Xylene
50
100
0
0.3
0.5
1.5
2
Acetonitrile
40
30
40
Toluene
20
100
0
0.5
0.7
2
3
Isopropanol
400
1
1.5
2
3
5
Acetone
500
1000
1
3
5
6.5
8
Methanol
200
1000
1
2
5
10
15
Ethanol
1000
5000
1
2
5
10
15
Diethyl ether
100
200
1
2
5
8
10
Halo Smart – Acids version
Chemical products
PEL/TWA 8H
(ppm)
PEL/STEL
(ppm)
High sensitivity
(ppm)
Medium
sensitivity
(ppm)
Low sensitivity
(ppm)
Hydrochloric acid
5 ppm
0.5 ppm
1 ppm
2 ppm
Nitric acid
1 ppm
1 ppm
Hydrobromic acid
2 ppm
0.5 ppm
1 ppm
N.B: Halo Smart is not adapted to sense hydrofluoric acid
Halo Smart – Formaldehyde version
Chemical products
PEL/TWA 8H
(ppm)
PEL/STEL
(ppm)
High sensitivity
(ppm)
Medium
sensitivity
(ppm)
Low sensitivity
(ppm)
Formaldehyde
0.5 ppm
1 ppm
0.1 ppm
0.5 ppm
1 ppm
