
ENMET Corporation PGD2
25
12.2.4 Toxic Sensor Types and Characteristics
Carbon Monoxide (CO)
Type No’s 4CF 3E Surecell CO 3E 300
Nominal Range
0-500ppm 0-1000ppm 0-500ppm 0-500ppm
Resolution
1ppm 0.5ppm 1ppm < 3 ppm
T
Response Time
<20 secs <25 secs <20 secs <30 secs
Inboard Filter (Y/N)
Yes No Yes Yes
Type No’s 3E/F 3F/F
Nominal Range
0-1000ppm 0-4000ppm
Resolution
0.5ppm 1 ppm
T
Response Time
<30 secs <30 secs
Inboard Filter (Y/N)
Yes Yes
Hydrogen Sulphide (H
2
S)
Type No’s 4HS 3H Surecell
Nominal Range
0-100ppm 0-200ppm 0-200ppm
Resolution
0.1ppm 0.25ppm 0.1ppm
T
Response Time
<30 secs <35 secs <10 secs
Inboard Filter (Y/N)
No No Yes
Sulphur Dioxide (SO
2
)
Type No’s 4S 3SH 3ST/F
Nominal Range
0-20ppm 0-20ppm 0-100ppm
Resolution
0.1ppm 0.1ppm 0.5ppm
T
Response Time
<15 secs <15 secs <20 secs
Inboard Filter (Y/N)
No No Yes
Nitric Oxide (NO)
Type No’s 4NT 3NT
Nominal Range
0-250ppm 0-100ppm
Resolution
0.5ppm 0.5ppm
T
Response Time
<20 secs <10 secs
Inboard Filter (Y/N)
No No
Nitrogen Dioxide (NO
2
)
Type No’s 4ND 3NDH
Nominal Range
0-30ppm 0-20ppm
Resolution
0.1ppm 0.1ppm
T
Response Time
<25 secs <35 secs
Inboard Filter (Y/N)
No No
Chlorine (Cl
2
)
Type No’s Surecell 3CLH
Nominal Range
0-20ppm 0-20ppm
Resolution
0.1ppm 0.1ppm
T
Response Time
<60 secs <60 secs
Inboard Filter (Y/N)
Yes No
Hydrogen (H
2
)
Type No’s 3HYT H2 3E 4%
Nominal Range
0-1000ppm 0-4%
Resolution
2ppm 100ppm
T
Response Time
<30 secs <60 secs
Inboard Filter (Y/N)
No Yes
Hydrogen Chloride (HCl)
Type No’s 3HL
Nominal Range
0-100ppm
Resolution
0.5ppm
T
Response Time
<120 secs
Inboard Filter (Y/N)
No
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