{"product_id":"rki-digester-gas-monitor","title":"RKI Digester Gas Monitor","description":"\u003cp\u003eThe RKI Digester Gas Monitor is a wall-mounted NDIR\/electrochemical analyzer built for continuous biogas monitoring, tracking methane (0-100% vol), oxygen (0-25% vol), carbon dioxide (0-50% vol), and hydrogen sulfide (0-1,000 ppm standard, other ranges available) in any combination up to all four gases at once. Sample tubing reaches up to 100 feet with a 3 SCFH system flow rate, and the unit automatically shuts off internally at 10% LEL for safety.\u003c\/p\u003e\n\u003cp\u003eEach active sensor channel outputs its own 4-20mA signal alongside Modbus RTU over RS-485, and the NEMA 4X enclosure runs on 100\/115\/220VAC or 24VDC. Choose the single-gas, dual-gas, or full four-gas configuration that matches your digester monitoring requirements — additional gas combinations and H2S ranges are available by quote.\u003c\/p\u003e","brand":"RKI Instruments","offers":[{"title":"CH4 (0-100% vol)","offer_id":48206468415678,"sku":"72-2120A-101","price":13950.0,"currency_code":"USD","in_stock":true},{"title":"O2 (0-25% vol)","offer_id":48206468448446,"sku":"72-2120A-102","price":13725.0,"currency_code":"USD","in_stock":true},{"title":"H2S (0-1,000 ppm)","offer_id":48206468481214,"sku":"72-2120A-103","price":13965.0,"currency_code":"USD","in_stock":true},{"title":"CO2 (0-50% vol)","offer_id":48206468513982,"sku":"72-2120A-104","price":13668.75,"currency_code":"USD","in_stock":true},{"title":"CH4\/O2","offer_id":48206468546750,"sku":"72-2120A-201","price":14268.75,"currency_code":"USD","in_stock":true},{"title":"CH4\/H2S","offer_id":48206468579518,"sku":"72-2120A-202","price":14343.75,"currency_code":"USD","in_stock":true},{"title":"CH4\/CO2","offer_id":48206468612286,"sku":"72-2120A-203","price":14325.0,"currency_code":"USD","in_stock":true},{"title":"O2\/H2S","offer_id":48206468645054,"sku":"72-2120A-204","price":14118.75,"currency_code":"USD","in_stock":true},{"title":"CH4\/O2\/H2S","offer_id":48206468677822,"sku":"72-2120A-301","price":14497.5,"currency_code":"USD","in_stock":true},{"title":"CH4\/O2\/CO2\/H2S (Full 4-Gas)","offer_id":48206468710590,"sku":"72-2120A-401","price":14951.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/9926\/6750\/files\/digester.jpg?v=1785125261","url":"https:\/\/envirotechonline.com\/products\/rki-digester-gas-monitor","provider":"EnviroTech Services","version":"1.0","type":"link"}