{"product_id":"rki-instruments-m2a-fixed-gas-sensor-transmitter-with-oled-4-20-ma-and-modbus-outputs","title":"RKI Instruments M2A Fixed Gas Sensor\/Transmitter with OLED, 4-20 mA and Modbus Outputs","description":"\u003ch4 class=\"PDq2pG_selectionAnchorContainer\"\u003eDescription\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/h4\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eRKI Instruments M2A is a fixed-mount gas sensor\/transmitter designed for continuous gas monitoring with a direct OLED concentration readout. The M2A provides standard 4–20 mA analog and RS-485 Modbus outputs for connection to gas monitoring controllers, PLCs, DCS equipment, or standalone alarm devices.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003ctable style=\"width: 87.6812%; height: 372.282px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003eRKI Instruments\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003eGas Detection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003eM2A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003eFixed Gas Sensor\/Transmitters\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003eFixed-mount continuous gas detector\/transmitter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eDisplay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003eAlphanumeric OLED, 8 characters per line\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eAnalog Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003eLinear 4–20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eDigital Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003eModbus RTU, 2-wire RS-485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eModbus Baud Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003e1200 to 19.2k baud\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eAlarm Relays\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003e2 programmable alarm relays plus 1 fail relay\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eRelay Contacts\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003e5 A Form C contacts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eOperating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003e10–30 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eCalibration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003eNon-intrusive magnetic-wand calibration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eControls\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003eMagnetic calibration control and internal push buttons\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eSensor Technology\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003eInfrared available for combustible gases and CO2; additional sensor types available by gas configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eRelative Humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003e5–95% RH, non-condensing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eEnclosure Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003eNEMA 4X, watertight cast aluminum with O-ring seal and epoxy powder coating\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003e8.5 × 5.2 × 4.5 in (215 × 132 × 114 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33.8669%;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 65.884%;\"\u003e4.5 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003eInformation About M2A\u003c\/h4\u003e\n\u003cp class=\"PDq2pG_selectionAnchorContainer\"\u003eThe M2A is a fixed gas detector head from RKI Instruments designed for standalone operation or integration into centralized gas detection systems. Its explosion-proof, NEMA 4X cast-aluminum enclosure supports installation in demanding indoor and outdoor monitoring environments. The transmitter interfaces with RKI Beacon controllers as well as compatible PLC and DCS systems through standard analog or digital communication. Non-intrusive magnetic-wand calibration, internal push-button controls, programmable alarm relays, and an OLED menu system provide local configuration and maintenance capability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eOLED Display: Provides a direct digital readout of measured gas concentration and access to calibration and setup menus.\u003cspan class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eDual Communication Outputs: Supplies a linear 4–20 mA analog signal and configurable RS-485 Modbus RTU output as standard.\u003c\/li\u003e\n\u003cli\u003eProgrammable Alarm Relays: Includes two configurable gas alarm relays plus a dedicated fail relay for external signaling and control.\u003c\/li\u003e\n\u003cli\u003eFlexible System Integration: Operates independently or interfaces with compatible gas controllers, PLCs, and DCS equipment.\u003c\/li\u003e\n\u003cli\u003eNon-Intrusive Calibration: Supports calibration through the enclosure window using a magnetic wand without opening the housing.\u003c\/li\u003e\n\u003cli\u003eInfrared Detection Support: M2A configurations are available with infrared sensing technology for combustible gases and CO2.\u003c\/li\u003e\n\u003cli\u003eLong-Life Sensor Design: Sensors are specified for a typical service life of two years or longer.\u003c\/li\u003e\n\u003cli\u003eRugged Enclosure: NEMA 4X cast-aluminum construction provides watertight protection for fixed industrial installations. \u003cspan class=\"contents\"\u003e\u003cspan class=\"\"\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe M2A delivers the reliability and precision required for continuous fixed gas detection and integration with industrial monitoring and alarm systems.\u003c\/p\u003e","brand":"RKI Instruments","offers":[{"title":"Default Title","offer_id":52257073299754,"sku":"M2A","price":969.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/s-l1600_431bec16-4ff2-4b3f-999c-a3cae748a8d7.webp?v=1786632821","url":"https:\/\/iqelectro.com\/products\/rki-instruments-m2a-fixed-gas-sensor-transmitter-with-oled-4-20-ma-and-modbus-outputs","provider":"IQElectro","version":"1.0","type":"link"}