{"product_id":"coh-a2-alphasense-5000ppm-carbon-monoxide-and-hydrogen-sulfide-gas-sensor","title":"COH-A2 Alphasense 5,000ppm Carbon Monoxide and Hydrogen Sulfide Gas Sensor","description":"\u003cp\u003eThe \u003cb\u003eCOH-A2 Alphasense Dual Gas Sensor \u003c\/b\u003e(\u003cem\u003eformerly known as the AP-0011)\u003c\/em\u003e detects both carbon monoxide and hydrogen sulfide in a single sensor. It is designed for OEM manufactures who need to measure both gases as well as a replacement sensor for several models of personal gas safety monitors.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor Sensor Tube Caps, please look under the \"Accessories\" Tab\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cstrong\u003e\u003cspan style=\"color: rgb(239, 6, 6);\"\u003e*\u003cem\u003e*Please Note: MOQ 10pcs - 2-4 week lead time**\u003c\/em\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eLow Cross-Sensitivity\u003c\/li\u003e\n\u003cli\u003eNo external power required\u003c\/li\u003e\n\u003cli\u003eProven and tested design\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis 20mm diameter, 4-pin sensor is the industry standard size for portable gas detectors.\u003c\/p\u003e\n\u003cp\u003eThe 2sense does not compromise performance or long term stability over the standard two-sensor solution when measuring both H2S and CO.\u003c\/p\u003e\n\u003cdiv class=\"specifications\"\u003e\n\u003ch2\u003eSpecifications - Carbon Monoxide\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSensitivity: nA\/ppm in 400ppm CO 50 to 100\u003c\/li\u003e\n\u003cli\u003eResponse time: tgo (s) from zero to 400ppm CO \u0026lt; 35\u003c\/li\u003e\n\u003cli\u003eZero current: ppm equivalent in zero air -3 to +3.5\u003c\/li\u003e\n\u003cli\u003eResolution: rms noise (ppm equivalent) \u0026lt; 0.5\u003c\/li\u003e\n\u003cli\u003eRange: ppm CO limit of performance warranty 1,000\u003c\/li\u003e\n\u003cli\u003eLinearity: ppm error at full scale, linear at zero and 400 ppm CO 10 to 40\u003c\/li\u003e\n\u003cli\u003eOvergas limit: maximum CO for stable response to gas pulse 5,000\u003c\/li\u003e\n\u003cli\u003eZero drift: ppm equivalent change\/year in lab air \u0026lt; 0.5\u003c\/li\u003e\n\u003cli\u003eSensitivity drift: % change\/year in lab air, monthly test \u0026lt; 4\u003c\/li\u003e\n\u003cli\u003eOperating life: months until 80% original signal (24 month warranted) 24\u003c\/li\u003e\n\u003cli\u003eSensitivity@ -20°C % (output@ -20°C\/output@ 20°C) @ 1 00ppm CO 30 to 50\u003c\/li\u003e\n\u003cli\u003eSensitivity@ 50°C % (output@ 50°C\/output@ 20°c)@ 100ppm CO 120 to 145\u003c\/li\u003e\n\u003cli\u003eZero@ -20°C ppm equivalent change from 20°c 0 to 5\u003c\/li\u003e\n\u003cli\u003eZero@ 50°C ppm equivalent change from 20°c 30 to 50 120 to 145 0 to -5\u003c\/li\u003e\n\u003cli\u003eTemperature range \u003cspan\u003e°C: \u003c\/span\u003e-30 to 50\u003c\/li\u003e\n\u003cli\u003ePressure range kPa: 80 to 120\u003c\/li\u003e\n\u003cli\u003eHumidity range %RH continuous 15 to 90\u003c\/li\u003e\n\u003cli\u003eStorage period months: @ 3 to 20°c (stored in sealed pot) 6\u003c\/li\u003e\n\u003cli\u003eLoad resistor: olms (recommended) 10 to 47\u003c\/li\u003e\n\u003cli\u003eWeight grams: \u0026lt; 6\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstrong\u003eCROSS SENSITIVITY\u003c\/strong\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eFilter Capacity: ppm-hours of Hydrogen Sulfide 1200\u003c\/li\u003e\n\u003cli\u003eH2S sensitivity % measured gas@ 20ppm H2S  \u0026lt; 12\u003c\/li\u003e\n\u003cli\u003eH2 sensitivity % measured gas@ 400ppm H2@ 20°C \u0026lt; 8\u003c\/li\u003e\n\u003cli\u003eNO2 sensitivity % measured gas@ 10ppm NO2 \u0026lt;3\u003c\/li\u003e\n\u003cli\u003eCl2 sensitivity % measured gas@ 10ppm Cl2 \u0026lt; 0.1\u003c\/li\u003e\n\u003cli\u003eNO sensitivity % measured gas@ 50ppm NO \u0026lt; 100\u003c\/li\u003e\n\u003cli\u003eSO2 sensitivity % measured gas@ 20ppm SO2 \u0026lt;2\u003c\/li\u003e\n\u003cli\u003eC2H4 sensitivity % measured gas@ 400ppm C2H4 \u0026lt; 60\u003c\/li\u003e\n\u003cli\u003eNH3 sensitivity % measured gas@ 20ppm NH3  \u0026lt; 6\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications - Hydrogen Sulfide\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSensitivity: nA\/ppm in 20ppm H2S 450 to 1000\u003c\/li\u003e\n\u003cli\u003eResponse time: tgo (s) from zero to 20ppm H2S@ 20°c \u0026lt; 30\u003c\/li\u003e\n\u003cli\u003eZero current: ppm equivalent in zero air ± 0.25\u003c\/li\u003e\n\u003cli\u003eResolution: rms noise (ppm equivalent) \u0026lt; 0.1\u003c\/li\u003e\n\u003cli\u003eRange: ppm H2S limit of performance warranty 100\u003c\/li\u003e\n\u003cli\u003eLinearity: ppm error at full scale, linear at zero and 20ppm H2S \u0026lt;± 5\u003c\/li\u003e\n\u003cli\u003eOvergas limit: maximum ppm H2S for stable response to gas pulse 200\u003c\/li\u003e\n\u003cli\u003eLifetime Zero drift: ppm equivalent change\/year in lab air \u0026lt; 0.1\u003c\/li\u003e\n\u003cli\u003eLifetime Sensitivity drift: % change\/year in lab air, monthly test \u0026lt; 2\u003c\/li\u003e\n\u003cli\u003eOperating life: months until 80% original signal (24 month warranted) 24\u003c\/li\u003e\n\u003cli\u003eSensitivity@ -20°C % (output@ -20°C\/output@ 20°C)@ 20ppm H2S 75 to 90\u003c\/li\u003e\n\u003cli\u003eSensitivity@ 50°C % (output@ 50°C\/output@ 20°c) @ 20ppm H2s 100 to 112\u003c\/li\u003e\n\u003cli\u003eZero @ -20°C ppm equivalent change from 20°c ±0.05\u003c\/li\u003e\n\u003cli\u003eZero @ 50°C ppm equivalent change from 20°c \u0026lt;Oto 0.2\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cstrong\u003eCross Sensitivity\u003c\/strong\u003e\u003cbr\u003e\n\u003cul\u003e\n\u003cli\u003eNO2 sensitivity: % measured gas@ 10ppm NO2 \u0026lt; -30\u003c\/li\u003e\n\u003cli\u003eCl2 sensitivity % measured gas@ 10ppm Cl2 \u0026lt; -25\u003c\/li\u003e\n\u003cli\u003eNO sensitivity % measured gas@ 50ppm NO \u0026lt; 30\u003c\/li\u003e\n\u003cli\u003eS02 sensitivity % measured gas@ 20ppm SO2 \u0026lt; 30\u003c\/li\u003e\n\u003cli\u003eCO sensitivity % measured gas@ 400ppm CO \u0026lt; 1.5\u003c\/li\u003e\n\u003cli\u003eH2 sensitivity % measured gas@ 400ppm H2 \u0026lt; 0.3\u003c\/li\u003e\n\u003cli\u003eC2H4 sensitivity % measured gas@ 400ppm C2H4 \u0026lt; 0.2\u003c\/li\u003e\n\u003cli\u003eNH3 sensitivity % measured gas@ 20ppm NH3 \u0026lt;2 \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e90 Days. See GasLab Terms and Conditions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"documents\"\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.alphasense.com\/wp-content\/uploads\/2023\/01\/Alphasense_COH-A2_datasheet_AW.pdf\"\u003e\u003cimg alt=\"Datasheet\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0019\/5952\/files\/CO2METER_PDF.png?1093\"\u003e\u003cstrong\u003e\u003cspan style=\"color: red;\"\u003e Data Sheet (pdf)\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"accessories\"\u003e\n\u003cp\u003eTube cap adapters easily convert 20mm standard gas sensors from diffusion to sampling sensors. Molded polymer grips sensor for easy fit and removal while maintaining a good seal.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca title=\"Tube cap adapter\" href=\"\/products\/sensor-tube-cap-adapter?variant=31044017619059\"\u003e\u003cstrong\u003eTC-1\u003c\/strong\u003e - 3 mm side mounted ports\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca title=\"tube cap adapter\" href=\"\/products\/sensor-tube-cap-adapter?variant=31044017651827\"\u003e\u003cstrong\u003eTC-2\u003c\/strong\u003e - 3 mm top mounted ports\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca title=\"tube cap adapter\" href=\"\/products\/sensor-tube-cap-adapter?variant=31044017684595\"\u003e\u003cstrong\u003eTC-3\u003c\/strong\u003e - 4.5 mm top mounted ports\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca title=\"micro-pump kit\" href=\"\/products\/gas-sensor-micro-pump\"\u003eMicro-Pump Kit\u003c\/a\u003e\u003c\/strong\u003e includes all the tools you need to utilize the tube-cap adapters as part of a sampling sensor system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca title=\"nafion tubing\" href=\"\/products\/nafion-gas-sample-drying-tubing\"\u003eNafion tubing\u003c\/a\u003e \u003c\/strong\u003eis a highly selective, semi-permeable membrane to water vapor. If gases inside Nafion tubing are wetter than gases surrounding the tubing, drying will occur. If the surrounding gases are wetter, humidification will occur.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca title=\"gas sampling pump\" href=\"\/products\/gas-sampling-pump\"\u003eMicro gas sampling pumps\u003c\/a\u003e\u003c\/strong\u003e provide a constant flow of air across the sensor with a tube cap - perfect for bench-top testing of sensors for closed-loop sampling applications.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSensor Pin Sockets\u003c\/strong\u003e - Manufacturers do not recommend soldering to the pins. Pin sockets can be purchased from Andon distributors. \u003ca href=\"http:\/\/www.andonelect.com\/prod\/Gas-Sensor-Sockets_64.aspx\" title=\"pin socket for sensor\"\u003eClick here to search for your sensor's socket\u003c\/a\u003e. Select the brand PDF, find your sensor, then search for the Andon part number for your sensor's socket.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eNO sensitivity % measured gas@ 50ppm NO \u0026lt; 30\u003c\/li\u003e\n\u003cli\u003eS02 sensitivity % measured gas@ 20ppm SO2 \u0026lt; 30\u003c\/li\u003e\n\u003cli\u003eCO sensitivity % measured gas@ 400ppm CO \u0026lt; 1.5\u003c\/li\u003e\n\u003cli\u003eH2 sensitivity % measured gas@ 400ppm H2 \u0026lt; 0.3\u003c\/li\u003e\n\u003cli\u003eC2H4 sensitivity % measured gas@ 400ppm C2H4 \u0026lt; 0.2\u003c\/li\u003e\n\u003cli\u003eNH3 sensitivity % measured gas@ 20ppm NH3 \u0026lt;2 \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e90 Days. See CO2Meter Terms and Conditions\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"AlphaSense","offers":[{"title":"COH-A2 Alphasense Dual Gas Sensor","offer_id":49030519980288,"sku":"COH-A2","price":288.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0388\/5331\/2557\/files\/COH-A2DualGasSensorforShopify.jpg?v=1784471307","url":"https:\/\/alotechparts.com\/products\/coh-a2-alphasense-5000ppm-carbon-monoxide-and-hydrogen-sulfide-gas-sensor","provider":"Alo Tech Solutions","version":"1.0","type":"link"}