{"product_id":"k7l-ud-omron-sensor-amplifier","title":"K7L-UD | Omron | Sensor Amplifier","description":"\u003cp\u003eConfigured for long-distance liquid detection and wire termination monitoring in industrial control environments, the \u003cstrong\u003eOmron K7L-UD\u003c\/strong\u003e (\u003cstrong\u003eK7L-UD\u003c\/strong\u003e Liquid Leakage Sensor Amplifier) provides direct physical\/electrical execution. It interfaces via dedicated liquid sensing bands over total cabling runs reaching 400 m, evaluating resistance shifts to actuate output relays while monitoring line integrity for disconnections.\u003c\/p\u003e\n\u003ch3\u003eVariant Nomenclature and Configuration Matrix\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase Series\u003c\/strong\u003e: K7L-U (Ultra-compact Liquid Leakage Sensor Amplifier platform)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisconnection Detection Function\u003c\/strong\u003e: Specified by \"D\" suffix designation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Interface\u003c\/strong\u003e: Track mounting via P2RF-08 \/ P2RF-08-E 8-pin screw terminal sockets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong-Distance Capability\u003c\/strong\u003e: Extended driver circuitry for long-cable runs (up to 400 m total sensing length)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eOperational Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eK7L-UD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eOmron\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e0.08 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Dimensions\u003c\/td\u003e\n\u003ctd\u003e100 mm x 80 mm x 40 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-10 to 55 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e1.0 VAC max \/ 3.0 VA max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring Distance\u003c\/td\u003e\n\u003ctd\u003e400 m max (total sensing band plus interconnect cable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDetection Method\u003c\/td\u003e\n\u003ctd\u003eAC impedance measurement method\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelay Output\u003c\/td\u003e\n\u003ctd\u003eSPDT (1c), 250 VAC 3 A, 30 VDC 3 A (resistive load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisconnection Detection\u003c\/td\u003e\n\u003ctd\u003eSupported (relay output toggles on line break)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplicable Socket\u003c\/td\u003e\n\u003ctd\u003eP2RF-08 \/ P2RF-08-E (8-pin screw terminal block)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProgrammable Automation and Deterministic I\/O Integration\u003c\/h3\u003e\n\u003cp\u003eThe device operates within standard PLC backplane and remote I\/O architectures by delivering discrete contact closures directly to digital input modules. It maintains strict noise immunity across long cable runs, avoiding signal crosstalk near high-speed backplane bus lines or deterministic Ethernet networks like EtherNet\/IP and EtherCAT. Fast response switching ensures deterministic signal transmission into PLC input image tables without requiring specialized firmware flash compatibility or complex communication protocols.\u003c\/p\u003e\n\u003ch3\u003ePackage Contents and Ordering Information\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Omron K7L-UD Liquid Leakage Sensor Amplifier unit\u003c\/li\u003e\n\u003cli\u003e1 x Instruction manual sheet\u003c\/li\u003e\n\u003cli\u003eNote: Mounting socket (P2RF-08 or P2RF-08-E) and sensing bands (F03-15 or F03-16PE) must be ordered separately as external accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSystem Installation and Cabling Standards\u003c\/h3\u003e\n\u003ch4\u003eSocket Selection and DIN-Rail Installation\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eMount the unit vertically onto a standard 35 mm DIN rail using a P2RF-08 or finger-safe P2RF-08-E 8-pin socket.\u003c\/li\u003e\n\u003cli\u003eEnsure at least 10 mm of clear air space above and below the amplifier to facilitate natural heat dissipation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWiring and Noise Mitigation Rules\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eRoute sensing band leads in dedicated, grounded metal conduits away from high-voltage motor drives or AC power lines.\u003c\/li\u003e\n\u003cli\u003eKeep total cable length (interconnect wiring plus sensing band) within the strict 400 m operational boundary.\u003c\/li\u003e\n\u003cli\u003eStrip conductor ends to 6 mm before tightening terminal screws to a maximum torque of 0.5 N m.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWhat causes the disconnection detection feature to actuate on the unit?\u003c\/p\u003e\n\u003cp\u003eA line break in the sensing band circuit alters the line resistance beyond the monitoring threshold, triggering the internal fault contact immediately.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan the amplifier be installed without an external terminal socket?\u003c\/p\u003e\n\u003cp\u003eNo, the hardware uses a pin base design requiring a compatible 8-pin socket like the P2RF-08 or P2RF-08-E for electrical connections.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoes the device support hot-swapping while power is applied to the socket?\u003c\/p\u003e\n\u003cp\u003eHot-swapping is not recommended; always isolate power to the socket terminals before inserting or removing the amplifier unit.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow does long wiring distance affect the response time of the system?\u003c\/p\u003e\n\u003cp\u003eWiring up to the maximum 400 m limit adds minimal capacitive load, maintaining rapid detection times under standard operating conditions.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat type of sensing liquid is suitable for this amplifier model?\u003c\/p\u003e\n\u003cp\u003eIt detects conductive liquids such as water or chemical solutions; non-conductive oil-based liquids cannot be detected by AC resistance methods.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIs external calibration required after replacing a damaged sensing band?\u003c\/p\u003e\n\u003cp\u003eNo manual calibration is required; the internal threshold circuitry automatically compensates within nominal line impedance parameters.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHow should signal cable shielding be terminated in high-noise environments?\u003c\/p\u003e\n\u003cp\u003eConnect cable shielding to a clean protective earth terminal at the control panel side only to prevent ground loop currents.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhat happens to the relay output during a complete main power failure?\u003c\/p\u003e\n\u003cp\u003eThe internal output relay de-energizes instantly, switching contacts to their default unpowered positions to ensure fail-safe monitoring.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Omron","offers":[{"title":"Default Title","offer_id":47306669064365,"sku":"K7L-UD","price":100.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0733\/1613\/9181\/files\/K7L-UD.jpg?v=1790227854","url":"https:\/\/www.maxwellplc.com\/ru\/products\/k7l-ud-omron-sensor-amplifier","provider":"Maxwell PLC Ltd","version":"1.0","type":"link"}