{"product_id":"mtl5041-mtl-instruments-1-channel-4-20ma-galvanic-isolator-module","title":"MTL5041 MTL Instruments 1-Channel 4-20mA Galvanic Isolator Module","description":"\u003ch3\u003e\n\u003cstrong\u003eMTL5041\u003c\/strong\u003e Architectural Overview\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #008000;\"\u003eMTL5041\u003c\/span\u003e\u003c\/strong\u003e is a high-integrity, single-channel intrinsically safe galvanic isolator designed by \u003cstrong\u003e\u003cspan style=\"color: #008000;\"\u003eMTL Instruments\u003c\/span\u003e\u003c\/strong\u003e. This rail-mounted module provides a fully floating DC power supply to energize a conventional 2-wire 4\/20mA transmitter positioned within explosive hazardous areas. Concurrently, the hardware repeats the analog current signal through an independent, fully isolated floating circuit to drive safe-area control system loads. By providing robust galvanic isolation between the input, output, and power supply pathways, this instrument eliminates ground loop currents and clamps fault energy, ensuring comprehensive explosion protection for hazardous process loops.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #008000;\"\u003eMTL Instruments\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel Number:\u003c\/strong\u003e \u003cstrong\u003e\u003cspan style=\"color: #008000;\"\u003eMTL5041\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Series:\u003c\/strong\u003e MTL5000 Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Type:\u003c\/strong\u003e Intrinsically Safe Galvanic Isolator \/ Transmitter Power Supply\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Channels:\u003c\/strong\u003e 1 Independent Channel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe-Area Output Signal Range:\u003c\/strong\u003e 4 to 20 mA Linear Processing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe-Area Over\/Under-Range Capacity:\u003c\/strong\u003e 0 to 24 mA Absolute Extended Scale\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Safe-Area Load Resistance:\u003c\/strong\u003e 0 to 1000 Ohms (1 kΩ)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe-Area Circuit Output Resistance:\u003c\/strong\u003e Greater than 2 MΩ High-Impedance Drive\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe-Area Circuit Ripple Generation:\u003c\/strong\u003e Less than 125 µA Peak-to-Peak Noise\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHazardous-Area Input Signal Range:\u003c\/strong\u003e 0 to 24 mA (Accommodates Full Over-Range States)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAvailable Transmitter Voltage:\u003c\/strong\u003e 16.5 V Stabilized at a full 20 mA Current Load\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransfer Accuracy at 20°C:\u003c\/strong\u003e Better than 20 µA (Typical Calibration Performance at 5 µA)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature Induced Drift:\u003c\/strong\u003e Less than 1 µA per Degree Celsius Thermal Shift\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTransient Response Time:\u003c\/strong\u003e Settles to within 10% of final steady value within 250 µs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMain Power Input Supply Range:\u003c\/strong\u003e 20 to 35 V DC Continuous Utility Inputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Internal Current Consumption:\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003e70 mA measured at 24 V DC Power Rails\u003c\/li\u003e\n\u003cli\u003e85 mA measured at 20 V DC Power Rails\u003c\/li\u003e\n\u003cli\u003e55 mA measured at 35 V DC Power Rails\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Internal Thermal Power Dissipation:\u003c\/strong\u003e 1.2 W at 24 V DC with an active 20 mA Signal Load\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIntrinsic Safety \u0026amp; Entity Parameters\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHazardous Area Location Suitability:\u003c\/strong\u003e Zone 0, IIC, T4–T6 Atmospheric Classifications if certified\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNorth American Division Classification:\u003c\/strong\u003e Class I, Division 1, Groups A, B, C, and D Hazardous Environments\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Description Entity Limits:\u003c\/strong\u003e 28 V Maximum Voltage, 300 Ω Impedance, 93 mA Maximum Short Current\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Safe-Area Safety Voltage (Um):\u003c\/strong\u003e 250 V rms or DC Volts Maximum Fault Tolerances\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTerminal Interface Configuration\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal 1:\u003c\/strong\u003e Hazardous Area Input Negative Connection (-ve)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal 2:\u003c\/strong\u003e Hazardous Area Input Positive Connection (+ve)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal 11:\u003c\/strong\u003e Safe Area Output Negative Connection (-ve)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal 12:\u003c\/strong\u003e Safe Area Output Positive Connection (+ve)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal 13:\u003c\/strong\u003e Main DC Power Supply Negative Input (-ve)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal 14:\u003c\/strong\u003e Main DC Power Supply Positive Input (+ve)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSystem Integration \u0026amp; Equipment Suitability\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eField Transmitters:\u003c\/strong\u003e Conventional 2-wire smart or analog 4-20mA pressure, temperature, and level transmitters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl System Interfaces:\u003c\/strong\u003e Distributed Control System (DCS) Analog Input cards and Programmable Logic Controller (PLC) loop inputs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Hardware:\u003c\/strong\u003e Standard 35mm symmetrical DIN rail profiles inside safe-area control enclosures\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplication Scenarios\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003ePowering and isolating hazardous-area oil refinery tank level instrumentation loops.\u003c\/li\u003e\n\u003cli\u003eIsolating hazardous zone offshore gas platform pressure transmitters from safe-area DCS controllers.\u003c\/li\u003e\n\u003cli\u003eChemical processing plant flow control loops requiring strict electrical fault containment between boundaries.\u003c\/li\u003e\n\u003cli\u003eWater and wastewater digester gas monitoring stations needing explosion-proof safety parameters.\u003c\/li\u003e\n\u003cli\u003ePharmaceutical sterile processing infrastructure requiring precise loop isolation to eliminate electrical noise interference.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDiagnostic Capabilities\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePWR LED (Green):\u003c\/strong\u003e Located on the front fascia; illuminates solid when the DC voltage input stays within the 20 to 35 V window.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Integrity Monitoring:\u003c\/strong\u003e The high 2 MΩ safe-area output resistance allows control systems to track deep signal drops below 4mA.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOver-range Tracking:\u003c\/strong\u003e Linear tracking up to 24mA allows diagnostic software to easily spot field sensor saturation or short-circuit faults.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePackaging List \u0026amp; Warranty Terms\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOne New \u003cstrong\u003e\u003cspan style=\"color: #008000;\"\u003eMTL Instruments MTL5041\u003c\/span\u003e\u003c\/strong\u003e Galvanic Isolator Module\u003c\/li\u003e\n\u003cli\u003eOfficial Factory Installation and Wiring Data Sheet\u003c\/li\u003e\n\u003cli\u003e12-Month Comprehensive Warranty Protection Plan covering all manufacturing and component defects\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eShipping Logistics\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlobal Air Freight Express Networks:\u003c\/strong\u003e Expedited worldwide shipment via FedEx, UPS, and DHL.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFulfillment Speed:\u003c\/strong\u003e Materials leave the central fulfillment hub within 24 to 48 hours of order processing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGlobal PLC Spare HUB's Insight\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #008000;\"\u003eMTL5041\u003c\/span\u003e\u003c\/strong\u003e is a benchmark product for galvanic isolation technology. Unlike standard zener barriers that require a dedicated, low-resistance network ground system, this isolator features an internal transformer layout. This allows it to float the field loop completely without extra grounding costs. Its ultra-fast 250 µs response time makes it an excellent choice for critical surge protection loops and fast-acting pressure tracking systems. When replacing or updating these units, engineers should note that the MTL5000 series uses a compact side-plugging design. This layout requires adequate finger clearance between adjacent DIN rail modules during routine field maintenance.\u003c\/p\u003e\n\u003ch3\u003eProcurement Selection Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVerify that the field-side transmitter can operate reliably on the 16.5 V DC at 20 mA power level provided by this module.\u003c\/li\u003e\n\u003cli\u003eSelect this model when your loop drawings demand a high-impedance safe-area drive capable of handling loop resistances up to 1000 Ohms.\u003c\/li\u003e\n\u003cli\u003eEnsure your control cabinet ventilation plan accounts for the 1.2 W power dissipation rating when grouping multiple isolators closely on a rail.\u003c\/li\u003e\n\u003cli\u003eChoose alternative multi-channel variants if your automation cabinet requires maximum I\/O density per linear inch of DIN rail space.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch3\u003eHow does this module differ from a zener barrier regarding installation grounding requirements?\u003c\/h3\u003e\n\u003cp\u003eThis module uses transformer-based galvanic isolation to isolate the field signals from the control room loops. Because the circuit is fully floating, you do not need to run a high-maintenance, dedicated IS earth ground connection to the cabinet rail.\u003c\/p\u003e\n\u003ch3\u003eCan this module pass digital HART communication signals to and from the field transmitter?\u003c\/h3\u003e\n\u003cp\u003eNo. The module is engineered specifically for conventional analog 4-20mA current paths. If your system requires HART pass-through diagnostics, you should select the specialized HART-compatible isolator models within the same series lineup.\u003c\/p\u003e\n\u003ch3\u003eWhat does a completely dark green PWR LED indicate when the loop shows 0mA output?\u003c\/h3\u003e\n\u003cp\u003eA dark power LED indicates the module is not receiving sufficient voltage across terminals 13 and 14. Check your safe-area power distribution lines with a multimeter to ensure the supply stays within the required 20 to 35 V DC window.\u003c\/p\u003e\n\u003ch3\u003eWhy is the high 2 MΩ safe-area circuit output resistance an important parameter for engineers?\u003c\/h3\u003e\n\u003cp\u003eThe 2 MΩ output resistance ensures the module behaves as a near-perfect constant current source. This lets it drive varying load impedances up to 1000 Ohms without causing signal drop or accuracy losses in the reading circuit.\u003c\/p\u003e\n\u003ch3\u003eWhat are the consequences if the safety entity parameters of 28V and 93mA are exceeded by the field device?\u003c\/h3\u003e\n\u003cp\u003eExceeding these safety boundaries violates the intrinsic safety certification for the zone. If a field component stores too much energy, it can create a spark hot enough to ignite explosive atmospheres if a wire shorts out or breaks.\u003c\/p\u003e","brand":"MTL","offers":[{"title":"Default Title","offer_id":45014021767350,"sku":"MTL5041","price":136.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/MTL5041_3.jpg?v=1780306166","url":"https:\/\/www.plcsparehub.com\/products\/mtl5041-mtl-instruments-1-channel-4-20ma-galvanic-isolator-module","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}