{"product_id":"emerson-a6312-dual-channel-speed-and-key-monitor-module","title":"Emerson A6312 Dual-Channel Speed and Key Monitor Module","description":"\u003ch2\u003e\u003cstrong\u003eEmerson A6312 Speed and Key Monitor\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eA6312\u003c\/strong\u003e from Emerson provides reliable monitoring for critical rotating machinery. This module tracks speed, phase, zero speed, and rotation direction with high accuracy. It integrates seamlessly with the \u003cstrong\u003eAMS 6500\u003c\/strong\u003e monitoring system. The monitor helps build a complete API 670 compliant protection solution for industrial applications.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCompact Design and Key Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"color: #e67e22;\"\u003e\u003cstrong\u003eTwo-channel 3U module\u003c\/strong\u003e\u003c\/span\u003e saves 50% cabinet space versus traditional 6U cards.\u003c\/li\u003e\n\u003cli\u003eFully compliant with \u003cstrong\u003eAPI 670\u003c\/strong\u003e machinery protection standards.\u003c\/li\u003e\n\u003cli\u003eFeatures \u003cspan style=\"color: #e67e22;\"\u003e\u003cstrong\u003ehot-swappable\u003c\/strong\u003e\u003c\/span\u003e design for maintenance without system shutdown.\u003c\/li\u003e\n\u003cli\u003eSupports redundant mode with automatic switchover between primary and backup tachometers.\u003c\/li\u003e\n\u003cli\u003eMonitors sensor gap voltage and pulse count to ensure reliable operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCore Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand \u0026amp; Model:\u003c\/strong\u003e Emerson \u003cstrong\u003eA6312\u003c\/strong\u003e Speed and Key Monitor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Channels:\u003c\/strong\u003e Two independent eddy current differential inputs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Sensors:\u003c\/strong\u003e Emerson 6422, 6423, 6424, 6425 displacement sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput Voltage Range:\u003c\/strong\u003e 0 to ±27.3 VDC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrequency Range:\u003c\/strong\u003e 0 - 20,000 Hz (0 - 65,535 RPM).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasuring Range:\u003c\/strong\u003e Continuously adjustable from 2 V to 30 V.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSensor Power:\u003c\/strong\u003e -26.75 VDC, 20 mA nominal (35 mA max), short-circuit proof.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent Output:\u003c\/strong\u003e 0\/4-20 mA per channel, ±1% accuracy, load \u0026lt;500 Ω.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eMeasurement and Analysis Capabilities\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpeed Measurement:\u003c\/strong\u003e Forward\/reverse rotation monitoring with 1-255 trigger marks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKey Pulse Detection:\u003c\/strong\u003e Phase measurement with once-per-revolution targets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero Speed Monitor:\u003c\/strong\u003e Detects stopped condition with 1-1700 second range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDirection Detection:\u003c\/strong\u003e Identifies rotation direction using phase-shifted trigger marks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulse Width:\u003c\/strong\u003e 5-10 msec time window for accurate signal processing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePulse Output:\u003c\/strong\u003e 0-20 kHz TTL output per channel, load \u0026gt;10 kΩ.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eAlarm and Diagnostic Functions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlert \u0026amp; Danger Setpoints:\u003c\/strong\u003e Adjustable from 5% to 100% of full scale.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSetpoint Resolution:\u003c\/strong\u003e 1% of full scale value.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlarm Delay:\u003c\/strong\u003e 0-5 seconds per channel, extendable to 0-36 seconds with A6740 relay card.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlarm Hysteresis:\u003c\/strong\u003e Adjustable 0-20% on decreasing signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-Checking:\u003c\/strong\u003e Continuous monitoring of power, sensors, cables, and module temperature.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLimit Multiply:\u003c\/strong\u003e Remote adjustment with 1.00-4.99 factor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eEnvironmental and Physical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e 0°C to 65°C (32°F to 149°F).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -30°C to 85°C (-22°F to 185°F).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHumidity:\u003c\/strong\u003e 5% to 95% RH, non-condensing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVibration Resistance:\u003c\/strong\u003e Meets IEC 68-2-6 standards (0.15mm at 10-55 Hz).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e 24 VDC, maximum 6W (250 mA).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 128.4mm (H) x 30mm (W) x 160mm (D) - 3U, 6TE size.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e Approximately 320g (0.705 lbs).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What is the main purpose of the A6312 monitor?\u003c\/strong\u003e\u003cbr\u003eA: It monitors shaft speed, rotation direction, phase (key), and zero speed conditions to protect critical rotating machinery like turbines and compressors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: What sensors are compatible with this monitor?\u003c\/strong\u003e\u003cbr\u003eA: It works specifically with Emerson eddy current displacement sensors (models 6422, 6423, 6424, 6425) and corresponding drivers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQ: How does the redundant mode function work?\u003c\/strong\u003e\u003cbr\u003eA: In redundant mode, the module automatically switches from a primary to a backup tachometer sensor if it detects a failure, ensuring continuous monitoring without interruption.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Emerson","offers":[{"title":"Default Title","offer_id":51047923941508,"sku":"A6312","price":186.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0958\/7454\/7844\/files\/A6312-1.jpg?v=1767320182","url":"https:\/\/www.etowonauto.com\/az\/products\/emerson-a6312-dual-channel-speed-and-key-monitor-module","provider":"Etowon Auto","version":"1.0","type":"link"}