*mydirectindustry

CO-AF

1 / 2 PagesView full catalog

CO-AF

Product catalog summary

Technical Specifications

Performance: The CO-AF Carbon Monoxide Sensor has a sensitivity range of 55 to 90 nA/ppm in 400ppm CO, with a response time of less than 25 seconds from zero to 400ppm CO. The zero current is between -5 to +4 ppm equivalent in zero air, and the resolution is less than 0.5 ppm equivalent RMS noise. The sensor can handle up to 5,000 ppm CO under warranty and has a linearity error of +15 to +25 ppm at full scale.
Lifetime: The zero drift is less than 0.2 ppm equivalent change per year in lab air, and the sensitivity drift is less than 8% change per year. The operating life is over 24 months until 80% of the original signal is maintained.
Environmental Sensitivity: At -20°C, the sensitivity is 63 to 88% of the output at 20°C, and at 50°C, it is 102 to 115%. Zero output changes are less than ±3 ppm at -20°C and less than ±8 ppm at 50°C.
Cross Sensitivity: The sensor has filter capacities of 250,000 ppm-hours for H2S, 600,000 ppm-hours for NO2, 20,000 ppm-hours for NO, and 300,000 ppm-hours for SO2. Sensitivities to various gases are generally below 0.1%, except for NO at 5% and H2 at 60%.
Key Specifications: The temperature range is -30 to 50°C, pressure range is 80 to 120 kPa, and humidity range is 15 to 90% rh continuous. The recommended load resistor is 10 to 47 ohms, and the sensor weighs less than 6 grams.

Figures and Data

Figure 1: Schematic diagrams of the CO-AF sensor from different views.
Figure 2: Shows sensitivity variation with temperature changes.
Figure 3: Illustrates zero output variation with temperature, expressed as ppm gas equivalent.
Figure 4: Demonstrates the sensor's response to step changes in CO concentrations from zero to 2% CO by volume.

Additional Information: All sensors are tested under ambient conditions with a 10-ohm load resistor. Customers are advised to test sensors under their own conditions to ensure suitability. For disposal instructions, contact Alphasense or its distributor. For further information, visit the Alphasense website.

Catalog excerpts

CO-AF Carbon Monoxide Sensor Technical Specification Figure 1 CO-AF Schematic Diagram Bottom View Side View PERFORMANCE Sensitivity Response time Zero current Resolution Range Linearity Overgas limit nA/ppm in 400ppm CO t90 (s) from zero to 400ppm CO ppm equivalent in zero air RMS noise (ppm equivalent) ppm CO limit of performance warranty ppm error at full scale, linear at zero, 1000ppm CO maximum ppm for stable response to gas pulse ppm equivalent change/year in lab air % change/year in lab air, monthly test months until 80% original signal (24 month warranted) Zero drift Sensitivity drift Operating life ENVIRONMENTALSensitivity @ -20°C % (output @ -20°C/output @ 20°C) @ 400ppm CO Sensitivity @ 50°C % (output @ 50°C/output @ 20°C) @ 400ppm CO Zero @ -20°C ppm equivalent change from 20°C Zero @ 50°C ppm equivalent change from 20°C CROSS SENSITIVITY Filter capacity Filter capacity Filter capacity Filter capacity H2S sensitivity NO2 sensitivity Cl2 sensitivity NO sensitivity SO2 sensitivity H2 sensitivity C2H4 sensitivity NH3 sensitivity KEY Temperature range SPECIFICATIONS Pressure range Humidity range Storage period Load resistor Weight ppm·hours ppm-hours ppm-hours ppm-hours % measured gas @ 20ppm % measured gas @ 10ppm % measured gas @ 10ppm % measured gas @ 50ppm % measured gas @ 20ppm % measured gas @ 400ppm % measured gas @ 400ppm % measured gas @ 20ppm °C kPa % rh continuous months @ 3 to 20°C (stored in sealed pot) Ω (recommended) g At the end of the product’s life, do not dispose of any electronic sensor, component or instrument in the domestic waste, but contact the instrument manufacturer, Alphasense or its distributor for disposal instructions. NOTE: all sensors are tested at ambient environmental conditions, with 10 ohm load resistor, unless otherwise stated. As applications of use are outside our control, the information provided is given without legal responsibility. Customers should test under their own conditions, to ensure that the sensors are suitable for their own requirements. Alphasense Ltd, Sensor Technology House, 300 Avenue West, Skyline 120, Great Notley. CM77 7AA. UK Telephone: +44 (0) 1376 556 700 Fax: +44 (0) 1376 335 899 E-mail: [email protected] Website: w

Open the catalog to page 1

Perf erformance Data CO-AF Performance Data Figure 2 Sensitivity Temperature Dependence Figure 2 shows the variation in sensitivity caused by changes in temperature. This data is taken from a typical batch of sensors. The mean and ±95% confidence intervals are shown. Mean "+95% conf." "-95% conf." Zero output, referenced to 20oC (equivalent ppm) Figure 3 shows the variation in zero output caused by changes in temperature, expressed as ppm gas equivalent, referenced to zero at 20oC. This data is taken from a typical batch of sensors. Figure 4 Response to Exposure to 2% CO 1600000 2% CO 1400000...

Open the catalog to page 2

CO-AF

CO-AF

Catalog excerpts

All Alphasense catalogs and technical brochures

Archived catalogs