CM4 Four-Point Continuous Monitor
CM4 Technical Manual
C-4
Gas Name
TLV
LAL
LDL
Default
Alarm
Level 1
Default
Alarm
Level 2
Range
Alarm Setting
Initial
Analysis
Period
(seconds)
Time to 1 TLV
Alarm @ 2 TLV
Concentration
10 Foot Sample
Line
Chemcassette
Part Number
Chlorine XP4
(Cl
2
)
0.5 ppm 0.05 ppm 0.05 ppm 0.5 ppm
1 ppm
0.05-5 ppm
0.05-0.24 ppm
0.25-5.0 ppm
45
30
5*
<24 sec
1258-9308
Chlorine XP4
(Cl
2
)
Low Level
0.5 ppm 30 ppb
7 ppb
500 ppb 1000 ppb 7-2000 ppb
30-199 ppb
200-499 ppb
500-2000 ppb
120
90
60
0*
<20 sec
1258-9308
Chlorine XP
(Cl
2
)
Low Level
0.5 ppm 30 ppb
7 ppb
500 ppb
1000
ppb
7-2000 ppb
30-199 ppb
200-499 ppb
500-2000 ppb
120
90
60
0*
<20 sec
1874-9308
Chlorine Dioxide
(ClO
2
)
100 ppb 50 ppb
32 ppb 100 ppb 200 ppb 32-1000 ppb
32-99 ppb
100-199 ppb
200-399 ppb
400-1000 ppb
300
240
120
60
0*
<120 sec
1874-9306
Diborane
(B
2
H
6
)
100 ppb 20 ppb
15 ppb 100 ppb 200 ppb 15-1000 ppb
20-99 ppb
100-199 ppb
200-299 ppb
300-1000 ppb
60
45
30
15
5*
<30 sec
874300
Diborane XP4
(B
2
H
6
)
100 ppb 15 ppb
10 ppb 100 ppb 200 ppb 10-1000 ppb
15-49 ppb
50-99 ppb
100-1000 ppb
60
45
30
0*
<30 sec
1258-9300
Diborane XP
(B
2
H
6
)
100 ppb 15 ppb
10 ppb 100 ppb 200 ppb 10-1000 ppb
15-49 ppb
50-99 ppb
100-1000 ppb
60
45
30
0*
<30 sec
1874-9300
Table C-1: Chemcassette Detectable Gases (cont’d)
* = Minimum Sample Time TLV = Threshold Limit Value LAL = Lowest Alarm Level LDL = Lower Detectable Limit
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