{"product_id":"rki-replacement-sensors-fixed-transmitters","title":"RKI Replacement Sensors — Fixed Transmitters","description":"\u003cp\u003eReplacement sensor assemblies for RKI fixed gas transmitters, matched to the specific instrument platform and gas type. Electrochemical (CT-7 and ES-23 style), IR, and catalytic sensor elements are available for T3A, AirLink 6940\/6940NXP, GD-70D, and general fixed transmitter platforms.\u003c\/p\u003e\n\u003cp\u003eThe configurations listed here cover the most commonly ordered gas types per platform. Additional gas-specific sensors are available by quote — \u003ca href=\"\/collections\/rki-instruments-parts-accessories\"\u003esee our full RKI Instruments Parts \u0026amp; Accessories collection\u003c\/a\u003e for calibration gas and kits to bump test or calibrate a new sensor.\u003c\/p\u003e","brand":"RKI Instruments","offers":[{"title":"T3A: CO 0-500 ppm, EC Type, Explosion-Proof","offer_id":48206615871678,"sku":"66-3001-05","price":416.25,"currency_code":"USD","in_stock":true},{"title":"AirLink 6940: CO 0-500 ppm, EC Type, XP Division 1","offer_id":48206615904446,"sku":"66-1001-05","price":450.0,"currency_code":"USD","in_stock":true},{"title":"AirLink 6940NXP: CO 0-1000 ppm, EC Type, Non-XP","offer_id":48206615937214,"sku":"66-2001-10","price":478.5,"currency_code":"USD","in_stock":true},{"title":"GD-70D: Si2H6 (Disilane) 0-15 ppm, H2 Resistant","offer_id":48206615969982,"sku":"ESU-23AH-SI2H6","price":393.75,"currency_code":"USD","in_stock":true},{"title":"Cl2 (Chlorine) 0-5\/10 ppm, CT-7 Style with Membrane","offer_id":48206616002750,"sku":"65-2051-01","price":352.5,"currency_code":"USD","in_stock":true},{"title":"NH3 (Ammonia) 0-75\/100\/200 ppm, CT-7 Style with Membrane","offer_id":48206616035518,"sku":"65-2054-01","price":352.5,"currency_code":"USD","in_stock":true},{"title":"SO2 0-10 ppm, CT-7 Style with Membrane","offer_id":48206616068286,"sku":"65-2024-01","price":352.5,"currency_code":"USD","in_stock":true},{"title":"HCl (Hydrogen Chloride) 0-20 ppm, CT-7 Style, Non-Explosion-Proof","offer_id":48206616101054,"sku":"65-2302-HCL","price":573.75,"currency_code":"USD","in_stock":true},{"title":"NO2 (Nitrogen Dioxide) 0-15 ppm, Direct Connection","offer_id":48206616133822,"sku":"65-2302-NO2","price":573.75,"currency_code":"USD","in_stock":true},{"title":"PH3 (Phosphine) 0-1.00 ppm (No H2 Response)","offer_id":48206616166590,"sku":"ES-23AH-PH3","price":363.75,"currency_code":"USD","in_stock":true},{"title":"NO (Nitric Oxide) 0-100 ppm, CT-7 Style with Membrane","offer_id":48206616199358,"sku":"65-2015-01","price":352.5,"currency_code":"USD","in_stock":true},{"title":"AsH3 (Arsine) 0-0.20\/1.00 ppm","offer_id":48206616232126,"sku":"ES-23AHS-ASH3","price":363.75,"currency_code":"USD","in_stock":true},{"title":"O3 (Ozone) 0-1 ppm","offer_id":48206616264894,"sku":"ES-K239C-O3","price":363.75,"currency_code":"USD","in_stock":true},{"title":"H2S 7 Series, 0-5000\/10000 ppm Max Overload","offer_id":48206616297662,"sku":"65-2032","price":159.75,"currency_code":"USD","in_stock":true},{"title":"CO (Carbon Monoxide), ES-81 Type, for 35-3000RK","offer_id":48206616330430,"sku":"65-2007RK","price":159.75,"currency_code":"USD","in_stock":true},{"title":"Sensor Housing\/Preamp, Potted, RF Hardened, H2S CT-7 Non-XP","offer_id":48206616363198,"sku":"65-2490RK","price":110.25,"currency_code":"USD","in_stock":true},{"title":"CH4 (Methane) 0-100% Volume, IR, Explosion-Proof","offer_id":48206616395966,"sku":"61-0192RK-CH4","price":581.25,"currency_code":"USD","in_stock":true},{"title":"CO2 0-5% Volume, IR, 3\/4\" NPT with Splashguard","offer_id":48206616428734,"sku":"61-0191-03DIS","price":615.0,"currency_code":"USD","in_stock":true},{"title":"O2 0-25%, Capillary Type, Plug-In Replacement","offer_id":48206616461502,"sku":"65-1025RK","price":108.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/9926\/6750\/files\/mainLogo_e5160e13-f564-4d55-8339-d96c9cd0b1bc.png?v=1785128333","url":"https:\/\/envirotechonline.com\/products\/rki-replacement-sensors-fixed-transmitters","provider":"EnviroTech Services","version":"1.0","type":"link"}