{"product_id":"mtl3041-mtl3000-single-channel-transmitter-repeater","title":"MTL3041 MTL3000 Single-Channel Transmitter Repeater","description":"\u003ch3\u003e\u003cstrong\u003e1. Product Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #1677c8;\"\u003eMTL3041\u003c\/span\u003e\u003c\/strong\u003e from MTL provides a fully floating DC supply for two-wire, 4–20 mA transmitters in hazardous areas. It repeats the measured current accurately through an isolated safe-area circuit.\u003c\/p\u003e\n\u003cp\u003eThis single-channel isolating repeater supports reliable signal transmission between hazardous-area instruments and control systems. Its transformer-coupled architecture directly chops the input current. This design eliminates high-stability precision resistors and improves long-term measurement stability.\u003c\/p\u003e\n\u003cp\u003eThe module supplies at least \u003cstrong\u003e17.5 V at 20 mA\u003c\/strong\u003e to the field transmitter. Its floating field circuit also tolerates intentional or accidental field-cable earthing.\u003c\/p\u003e\n\u003cp\u003eThe isolated output circuit helps prevent measurement errors caused by voltage drops in shared wiring. It also supports control systems with independently earthed input circuits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eImportant selection note:\u003c\/strong\u003e For smart transmitters, consider the \u003cstrong\u003eMTL3046B\u003c\/strong\u003e instead.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e2. Technical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eMTL\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e\u003cspan style=\"color: #1677c8;\"\u003eMTL3041\u003c\/span\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eSingle-Channel Isolating Repeater\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Series\u003c\/td\u003e\n\u003ctd\u003eMTL3000 Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChannel Configuration\u003c\/td\u003e\n\u003ctd\u003eOne, fully floating channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Signal\u003c\/td\u003e\n\u003ctd\u003e4–20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFull-Range Signal\u003c\/td\u003e\n\u003ctd\u003e0–20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eField Supply Voltage\u003c\/td\u003e\n\u003ctd\u003e17.5 V minimum at 20 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Open-Circuit Voltage\u003c\/td\u003e\n\u003ctd\u003e28 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Field Line Resistance\u003c\/td\u003e\n\u003ctd\u003e(17.5 V − transmitter voltage requirement) × 50 Ω\/V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafe-Area Load Resistance\u003c\/td\u003e\n\u003ctd\u003e0–800 Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafe-Area Output Resistance\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;1 MΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Ripple\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;10 µA peak-to-peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer Accuracy\u003c\/td\u003e\n\u003ctd\u003eBetter than 20 µA at 20°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Drift\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;1 µA\/°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResponse Time\u003c\/td\u003e\n\u003ctd\u003eTypically 60 ms to settle within 10% of final value\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e24 V DC nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e100 mA typical at 24 V with a 20 mA signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupply Current Range\u003c\/td\u003e\n\u003ctd\u003e80 mA at 35 V to 125 mA at 20 V, with a 20 mA signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Power Dissipation\u003c\/td\u003e\n\u003ctd\u003e2.0 W at 24 V with a 20 mA signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Power Dissipation\u003c\/td\u003e\n\u003ctd\u003e2.5 W at 35 V with a 20 mA signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReplaceable Fuse\u003c\/td\u003e\n\u003ctd\u003e125 mA, 5 × 20 mm glass fuse, DIN 41571 Sheet 2, semi-time-lag (M)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Description\u003c\/td\u003e\n\u003ctd\u003e28 V, 300 Ω, 93 mA, Um = 250 V RMS or DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFM Entity Parameters\u003c\/td\u003e\n\u003ctd\u003eVoc = 28 V; Isc = 93 mA; Ca = 0.13 µF; La = 4.0 mH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e160 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\u003cstrong\u003e3. Signal Processing and Isolation Characteristics\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFloating Field Supply:\u003c\/strong\u003e Provides at least 17.5 V at 20 mA for powering conventional two-wire transmitters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGalvanic Isolation:\u003c\/strong\u003e Separates the field-side signal circuit from the safe-area power supply circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAccurate Signal Repetition:\u003c\/strong\u003e Transfers the 4–20 mA measurement into a separate floating output circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Output Ripple:\u003c\/strong\u003e Maintains output ripple below 10 µA peak-to-peak.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStable Signal Conversion:\u003c\/strong\u003e Uses transformer-coupled current chopping instead of precision high-stability resistors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding Flexibility:\u003c\/strong\u003e Allows field cables to connect to earth without compromising the floating field circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl-System Compatibility:\u003c\/strong\u003e Helps prevent measurement errors from shared-cable voltage drops and separate grounding arrangements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e4. Installation Guide\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFollow the applicable installation drawings and hazardous-area regulations before mounting the \u003cstrong\u003e\u003cspan style=\"color: #1677c8;\"\u003eMTL3041\u003c\/span\u003e\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e Prepare a compatible DC supply within the specified 20–35 V operating range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eField Connection:\u003c\/strong\u003e Connect the two-wire 4–20 mA transmitter to the hazardous-area terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafe-Area Connection:\u003c\/strong\u003e Connect the output circuit to the receiving controller or measurement instrument.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoad Verification:\u003c\/strong\u003e Keep the safe-area load resistance within 0–800 Ω.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoop Voltage:\u003c\/strong\u003e Confirm at least 17.5 V remains available at 20 mA.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Selection:\u003c\/strong\u003e Calculate the maximum permitted field resistance from the transmitter voltage requirement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounding:\u003c\/strong\u003e Check the grounding arrangement and avoid unintended connections across isolated circuits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHazardous-Area Compliance:\u003c\/strong\u003e Verify the complete installation against the applicable certification and control drawing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eEngineering note:\u003c\/strong\u003e The 28 V maximum open-circuit voltage requires careful assessment of the transmitter and cable configuration.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e5. Commissioning and Maintenance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eUse a calibrated loop simulator and a suitable multimeter during commissioning.\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eVerify the DC supply voltage before connecting the field loop.\u003c\/li\u003e\n\u003cli\u003eInspect terminal wiring and confirm correct signal polarity.\u003c\/li\u003e\n\u003cli\u003eApply a 4 mA input and check the corresponding output current.\u003c\/li\u003e\n\u003cli\u003eRepeat the test at 12 mA and 20 mA.\u003c\/li\u003e\n\u003cli\u003eCompare input and output readings against the specified transfer accuracy.\u003c\/li\u003e\n\u003cli\u003eCheck output stability and ripple under the actual operating load.\u003c\/li\u003e\n\u003cli\u003eInspect the fuse rating if the module loses its normal operation.\u003c\/li\u003e\n\u003cli\u003eRecord the loop readings for future maintenance comparisons.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003e\u003cstrong\u003eMaintenance considerations:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eInvestigate abnormal current readings before replacing the isolator.\u003c\/li\u003e\n\u003cli\u003eCheck field cable resistance when transmitter voltage becomes insufficient.\u003c\/li\u003e\n\u003cli\u003eInspect grounding paths if the control system shows measurement deviations.\u003c\/li\u003e\n\u003cli\u003eCheck the output load when the receiving instrument reports unstable signals.\u003c\/li\u003e\n\u003cli\u003eUse only the specified fuse type and rating during replacement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003e6. Compatibility and Application Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e\u003cspan style=\"color: #1677c8;\"\u003eMTL3041\u003c\/span\u003e\u003c\/strong\u003e suits conventional two-wire 4–20 mA transmitters in hazardous-area measurement loops.\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTwo-wire 4–20 mA transmitters\u003c\/td\u003e\n\u003ctd\u003eSupported\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHazardous-area field instruments\u003c\/td\u003e\n\u003ctd\u003eSupported when suitably certified\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePLC analog input systems\u003c\/td\u003e\n\u003ctd\u003eSupported within output load limits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDCS analog input systems\u003c\/td\u003e\n\u003ctd\u003eSupported within output load limits\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndependently earthed control systems\u003c\/td\u003e\n\u003ctd\u003eSuitable for isolated signal integration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSmart transmitters\u003c\/td\u003e\n\u003ctd\u003eConsider MTL3046B instead\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Verify the receiving instrument's input configuration and the complete loop resistance before installation. Do not assume smart communication compatibility from the standard 4–20 mA signal specification.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e7. Certification and Hazardous-Area Parameters\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe manufacturer specifies the following hazardous-area application and safety parameters:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eGas Group:\u003c\/strong\u003e Zone 0, IIC, T4–T6 hazardous area, when suitably certified.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNorth American Classification:\u003c\/strong\u003e Division 1, Group A hazardous location, when suitably certified.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety Parameters:\u003c\/strong\u003e 28 V, 300 Ω, 93 mA.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum External Voltage:\u003c\/strong\u003e Um = 250 V RMS or DC.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFM Entity Parameters:\u003c\/strong\u003e Voc = 28 V, Isc = 93 mA, Ca = 0.13 µF, La = 4.0 mH.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eAlways check the exact product approval, certification documents, and installation control drawings. Confirm the permitted gas group, temperature class, and entity parameters before commissioning.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e8. Packaging and Delivery\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 × \u003cstrong\u003e\u003cspan style=\"color: #1677c8;\"\u003eMTL3041\u003c\/span\u003e\u003c\/strong\u003e Isolating Repeater\u003c\/li\u003e\n\u003cli\u003eStandard product packaging\u003c\/li\u003e\n\u003cli\u003eAdditional accessories according to the confirmed order configuration\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eContact Global PLC Spare HUB to confirm stock availability, product condition, and delivery arrangements before ordering.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e9. Frequently Asked Questions (FAQ)\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eQ1: What is the primary function of the MTL3041?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe MTL3041 powers a two-wire field transmitter and repeats its 4–20 mA signal. It provides isolation between hazardous-area and safe-area circuits.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ2: Can the MTL3041 power a conventional two-wire transmitter?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. It provides at least 17.5 V at 20 mA. Check the transmitter voltage requirement and cable resistance before installation.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ3: Why does the MTL3041 use a floating field supply?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe floating supply allows flexible field-cable grounding. It also helps prevent ground-related measurement errors in industrial instrumentation loops.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ4: Can the MTL3041 replace an MTL3046B?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNot automatically. The MTL3041 targets conventional two-wire transmitters. The MTL3046B suits applications involving smart transmitters. Confirm communication requirements before selecting a replacement.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ5: What should engineers check when the output current appears inaccurate?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFirst, verify the input loop current and DC supply voltage. Then inspect cable resistance, output loading, grounding paths, and terminal connections. Compare readings at 4 mA, 12 mA, and 20 mA.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ6: How should buyers select an MTL3041 for a replacement project?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eConfirm the model number, channel configuration, transmitter type, supply voltage, and output load. Also verify hazardous-area approval requirements and terminal wiring. Compare the existing system drawings before ordering.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ7: Can the MTL3041 drive a PLC or DCS analog input directly?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, provided the receiving input accepts a 4–20 mA signal. Keep the total safe-area load resistance within 0–800 Ω.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ8: What is the typical response time of the MTL3041?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe output typically settles within 10% of its final value after approximately 60 ms. Consider this response when evaluating process signal dynamics.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e10. Global PLC Spare HUB's Insight\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn industrial process instrumentation, signal isolation must address both electrical safety and measurement integrity. The \u003cstrong\u003e\u003cspan style=\"color: #1677c8;\"\u003eMTL3041\u003c\/span\u003e\u003c\/strong\u003e combines transmitter excitation with accurate current repetition in one channel.\u003c\/p\u003e\n\u003cp\u003eIts floating field supply provides practical grounding flexibility in hazardous-area installations. Its isolated output also helps control systems avoid common-mode grounding problems and shared-cable voltage errors.\u003c\/p\u003e\n\u003cp\u003eFor maintenance engineers, three parameters deserve particular attention: the 17.5 V minimum field supply, the 0–800 Ω output load, and the better-than-20 µA transfer accuracy at 20°C.\u003c\/p\u003e\n\u003cp\u003eThese values help engineers assess transmitter compatibility, loop performance, and measurement stability before commissioning.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/MTL3041.png?v=1793846927\" alt=\"\"\u003e\u003c\/p\u003e","brand":"MTL","offers":[{"title":"Default Title","offer_id":45013997748406,"sku":"MTL3041","price":165.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0722\/7863\/8774\/files\/MTL3041_93a302f5-e75b-4ddf-83ee-9897b10c6900.jpg?v=1793850651","url":"https:\/\/www.plcsparehub.com\/products\/mtl3041-mtl3000-single-channel-transmitter-repeater","provider":"Global PLC Spare Hub","version":"1.0","type":"link"}