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CO-D4 Carbon Monoxide Sensors

CO-D4 Carbon Monoxide Sensors

Product catalog summary

Technical Specifications
The CO-D4 Carbon Monoxide Sensor is a miniature sensor designed for detecting carbon monoxide levels. Key performance metrics include a sensitivity range of 30 to 48 nA/ppm at 400ppm CO, a response time of less than 25 seconds, and a zero current equivalent of less than ±3 ppm. The sensor has a resolution of less than 1.5 ppm and a performance warranty range up to 1,000 ppm, with a maximum overgas range of 2,000 ppm.

Lifetime and Environmental Conditions
The sensor exhibits a zero drift of less than 0.2 ppm per year and a sensitivity drift of less than 0.5% per month. It has an operating life of over 24 months, with a warranted period of 24 months. The sensor operates effectively within a temperature range of -20°C to 50°C and a pressure range of 80 to 120 kPa. It is designed to function in humidity levels between 15% and 90% relative humidity.

Cross Sensitivity
The sensor's cross sensitivity to various gases is minimal, with less than 0.1% sensitivity to SO2, NO2, Cl2, H2S, and NH3 at specified concentrations. It shows a higher sensitivity to NO and H2, with values of less than 50% and 70% respectively.

Key Specifications
The sensor weighs less than 2 grams and is recommended to be used with a load resistor between 10 to 100 ohms. It should be stored in a sealed pot at temperatures between 3°C and 20°C for up to 6 months.

Figures and Data Interpretation
Figures included in the document illustrate the sensor's sensitivity and zero output variations with temperature changes, as well as its performance under overgas conditions. The data shows consistent performance across a typical batch of sensors, with mean values and ±95% confidence intervals provided.

Additional Information
Alphasense Ltd reserves the right to modify design features and specifications without prior notice. The document provides guidance only, and users are advised to test the sensors under their own conditions to ensure suitability for specific applications.

Catalog excerpts

Figure 1 CO-D4 Schematic Diagram > PATENTED and PATENTPENDING All dimensions in millimetres ( 0.1 mm) Top ViewBottom ViewSide View (A three pin version is available on request, coded CO-DF) PERFORMANCE SensitivitynA/ppm in 400ppm CO30 to 48Response timet > 90 (s) from zero to 400ppm CO % 22ѰC< 25Zero currentppm equivalent in zero air< 3ResolutionRMS noise (ppm equivalent)< 1.5Rangeppm limit of performance warranty1,000Linearityppm CO error at full scale, linear at zero and 400ppm CO ѱ 40Overgas rangemaximum ppm for stable response to gas pulse2,000 LIFETIME Zero driftppm equivalent change/year in lab air< 0.2Sensitivity drift% change/month in lab air, monthly test<0.5Operating lifemonths until 80% original signal (24 month warranted)> 24 > ENVIRONMENTAL Sensitivity @ -20C% (output @ -20аC/output @ 20C) @ 400ppm CO72 to 84Sensitivity @ 50аC% (output @ 50C/output @ 20аC) @ 400ppm CO105 to 111 Zero @ -20Cppm equivalent change from20аC< 3 Zero @ 50ѰCppm equivalent change from 20C< б 4 CROSS Filter capacityppmhrsH > 2 S20,000 SENSITIVITY SO > 2 sensitivity% measured gas @ 20ppmSO > 2 < 0.1NOsensitivity% measured gas @ 50ppmNO< 50NO > 2 sensitivity% measured gas @ 10ppmNO > 2 < 0.1Cl > 2 sensitivity% measured gas @ 10ppmCl > 2 < 0.1H > 2 sensitivity% measured gas @ 400ppmH > 2 < 70C > 2 H > 4 sensitivity% measured gas @ 400ppmC > 2 H > 4 < 100H > 2 Ssensitivity% measured gas @ 20ppmH > 2 S< 0.1NH > 3 sensitivity% measured gas @ 20ppmNH > 3 < 0.1 KEY Temperature range > O C-20 to 50 SPECIFICATIONS Pressure rangekPa80 to 120Humidity range%rh (see note below)15 to 90Storage periodmonths @ 3 to 20 > O C (stored in sealed pot)6Load resistor עĦ (recommended)10 to 100Weightg< 2 > Note: Above 85% rh and 40 O C a maximum continuous exposure period of 10 days is warranted. Where such exposure occurs thesensor will recover normal electrolyte volumes when allowed to rest at lower %rh and temperature levels for several days. 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 ownrequirements. TT TTTecec ececechnical Specifhnical Specifhnical Specifhnical Specifhnical Specificaica icaicaicationtion tiontiontion Alphasense Ltd, Sensor Technology House, 300 Avenue West, Skyline 120, Great Notley. CM77 7AA. UKTelephone: +44 (0) 1376 556 700 Fax: +44 (0) 1376 335 899 E-mail: [email protected] Website: www.alphasense.com size="-3">

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CO-D4 Carbon Monoxide Sensors

CO-D4 Carbon Monoxide Sensors

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