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CO-AF Carbon Monoxide Sensor (CO Sensor) Description
Alphasense Carbon Monoxide gas sensors operate using proven fuel cell technology.
CO-AF Carbon Monoxide Sensor (CO Sensor) sizes:
20mm diameter, the industry standard size for portable gas detectors
The Alphasense family of CO sensors have proven themselves in the field with long term stability and reliable operation, well beyond the two-year warranty, using our patented electrode technology.
CO-AF Carbon Monoxide Sensor (CO Sensor) Schematic Diagram
CO-AF Carbon Monoxide Sensor (CO Sensor) PERFORMANCE | ||
Sensitivity |
nA/ppm in 400ppm CO |
55 to 90 |
Response time |
t90 (s) from zero to 400ppm CO |
|
Zero current |
ppm equivalent in zero air |
-4 to +2 |
Resolution |
RMS noise (ppm equivalent) |
|
Range ppm |
CO limit of performance warranty |
5,000 |
Linearity |
ppm error at full scale, linear at zero, 1000ppm CO |
+15 to +25 |
Overgas limit |
maximum ppm for stable response to gas pulse |
10,000 |
CO-AF Carbon Monoxide Sensor (CO Sensor) LIFETIME | ||
Zero drift |
ppm equivalent change/year in lab air |
|
Sensitivity drift |
% change/year in lab air, monthly test |
|
Operating life |
months until 80% original signal (24 month warranted) |
> 24 |
CO-AF Carbon Monoxide Sensor (CO Sensor) ENVIRONMENTAL | ||
Sensitivity @ -20°C |
% (output @ -20°C/output @ 20°C) @ 400ppm CO |
63 to 88 |
Sensitivity @ 50°C |
% (output @ 50°C/output @ 20°C) @ 400ppm CO |
102 to 115 |
Zero @ -20°C |
ppm equivalent change from 20°C |
|
Zero @ 50°C |
ppm equivalent change from 20°C |
|
CO-AF Carbon Monoxide Sensor (CO Sensor) CROSS SENSITIVITY | ||
Filter capacity |
pm·hours H2S |
250,000 |
Filter capacity |
ppm-hours NO2 |
600,000 |
Filter capacity |
ppm-hours NO |
20,000 |
Filter capacity |
ppm-hours SO2 |
300,000 |
H2S sensitivity |
% measured gas @ 20ppm H2S |
|
NO2 sensitivity |
% measured gas @ 10ppm NO2 |
|
Cl2 sensitivity |
% measured gas @ 10ppm Cl2 |
|
NO sensitivity |
% measured gas @ 50ppm NO |
|
SO2 sensitivity |
% measured gas @ 20ppm SO2 |
|
H2 sensitivity |
% measured gas @ 400ppm H2 at 20°C |
|
C2H4 sensitivity |
% measured gas @ 400ppm C2H4 |
|
NH sensitivity |
% measured gas @ 20ppm NH3 |
|
CO-AF Carbon Monoxide Sensor (CO Sensor) KEY SPECIFICATIONS | ||
Temperature range |
°C |
-30 to 50 |
Pressure range |
kPa |
80 to 120 |
Humidity range |
% rh continuous |
15 to 90 |
Storage period |
months @ 3 to 20°C (stored in sealed pot) |
6 |
Load resistor |
Ω (recommended) |
10 to 47 |
Weight |
g |
|
Matched Transmitter board for CO-AF CO Sensor
4-20 mA Digital Transmitter Board
• Factory calibration, custom-set for immediate use
• Digital zero, sensitivity and temperature compensation
• Digital and 4-20mA output
• Biased or unbiased operation
• Calibration and range change
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