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CL2-A1 Chlorine Sensor (CL2 Sensor) Description
Alphasense Chlorine gas sensors operate using proven fuel cell technology.
CL2-A1 Chlorine Sensor size:
20mm diameter, the industry standard size for portable gas detectors
The Cl2 range provides OEMs with reliable sensors for use in a number of high volume applications. Strong signal levels combined with low zero current allows resolution to 20ppb and an operating range from +0 to 20ppm. The sensors are suitable for inclusion in fixed installation sensing heads and portable safety instruments.
These sensors have improved transient response to humidity changes compared to competitors’ equivalent sensors.
The Cl2 sensors offer our electrolyte leak-free guarantee and reliable long-term detection performance. The leakproof housing is moulded with a colour coded top for ease of identification.
CL2-A1 Chlorine Sensor (CL2 Sensor) PERFORMANCE
Sensitivity
nA/ppm in 10ppm Cl2
-350 to -750
Response time
t90 (s) from zero to 10ppm Cl2 (33Ω load resistor)
Zero current
ppm equivalent in zero air
± 0.3
Resolution
RMS noise (ppm equivalent, 33Ω load resistor)
Range
ppm limit of performance warranty
20
Linearity
ppm error at full scale, linear at zero and 5ppm Cl2
± 1.5
Overgas limit
maximum ppm for stable response to gas pulse
50
CL2-A1 Chlorine Sensor (CL2 Sensor) LIFETIME
Zero drift
ppm equivalent change/year in lab air, monthly test
Sensitivity drift
% change/year in lab air, monthly test
Operating life
months until 80% original signal (24 month warranted)
> 24
CL2-A1 Chlorine Sensor (CL2 Sensor) ENVIRONMENTAL
Sensitivity @ -20℃
% (output @ -20℃/output @ 20℃) @ 10ppm Cl2
65 to 85
Sensitivity @ 50℃
% (output @ 50℃/output @ 20℃) @ 10ppm Cl2
105 to 125
Zero @ -20℃
ppm equivalent change from 20℃
Zero @ 50℃
ppm equivalent change from 20℃
CL2-A1 Chlorine Sensor (CL2 Sensor) CROSS SENSITIVITY
H2S sensitivity
% measured gas @ 20ppm H2S
NO2 sensitivity
% measured gas @ 10ppm NO2
100
NO sensitivity
% measured gas @ 50ppm NO
SO2 sensitivity
% measured gas @ 20ppm SO2
CO sensitivity
% measured gas @ 400ppm CO
H2 sensitivity
% measured gas @ 400ppm H2
C2H4 sensitivity
% measured gas @ 400ppm C2H4
CL2-A1 Chlorine Sensor (CL2 Sensor) KEY SPECIFICATIONS
Temperature range
℃
-20 to 50
Pressure range
kPa
80 to 120
Humidity range
%rh continuous
15 to 90
Storage period
months @ 3 to 20℃ (stored in sealed pot)
6
Load resistor
Ω (for optimum performance)
33
Weight
g
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