{"product_id":"txma-schienen-temperatursensor","title":"TXMA rail temperature sensor","description":"\u003cp\u003eThe \u003cstrong\u003eTXMA\u003c\/strong\u003e is a rail temperature sensor for railway applications, manufacturer type Müller \u003cstrong\u003eSTSBA\u003c\/strong\u003e. It measures the temperature of the running rail and provides the measured value that controls the \u003cstrong\u003epoint heating system\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe housing fits rail profiles \u003cstrong\u003eS 49, S 54, UIC 60, and R 65\u003c\/strong\u003e without modification. It is fastened with a \u003cstrong\u003eclamp and counter-clamp\u003c\/strong\u003e using an \u003cstrong\u003eM10\u003c\/strong\u003e threaded rod of strength class 10.9, tightening torque \u003cstrong\u003e68 Nm\u003c\/strong\u003e; installation must be \u003cstrong\u003ebelow the heating element\u003c\/strong\u003e, otherwise, the sensor will measure the heating system instead of the rail. The housing measures \u003cstrong\u003e68 × 64 mm\u003c\/strong\u003e, is fully potted, made of material \u003cstrong\u003ex 25 CrNiSi 18.9\u003c\/strong\u003e and weighs approximately \u003cstrong\u003e1.5 kg\u003c\/strong\u003e; the operating temperature ranges from \u003cstrong\u003e-40 … +85 °C\u003c\/strong\u003e, optionally -50 … +105 °C.\u003c\/p\u003e\n\u003cp\u003eThere is no plug: The connection cable \u003cstrong\u003eH07BQ-F, 2 × 1.5 mm²\u003c\/strong\u003e is led out of the potting via a \u003cstrong\u003ePG 11\u003c\/strong\u003e screw connection. The output is \u003cstrong\u003egalvanically isolated\u003c\/strong\u003e, the insulation voltage is \u003cstrong\u003e1500 VAC for 60 s\u003c\/strong\u003e – in the track, where traction currents and return current flow, this is the decisive value.\u003c\/p\u003e\n\u003cp\u003eA \u003cstrong\u003ePt100 in 4-wire Class A configuration\u003c\/strong\u003e is installed in the housing as the measuring element. The measuring range is configurable and set ex works to \u003cstrong\u003e-30 … +60 °C\u003c\/strong\u003e, the resolution is \u003cstrong\u003e0.1 °C\u003c\/strong\u003e, and the measurement deviation is less than \u003cstrong\u003e±0.05 % of the measuring span\u003c\/strong\u003e. The output is \u003cstrong\u003e4 … 20 mA\u003c\/strong\u003e in 2-wire technology, \u003cstrong\u003ereversible to 20 … 4 mA\u003c\/strong\u003e, with output limits \u003cstrong\u003e3.8 … 20.5 mA according to NAMUR\u003c\/strong\u003e. The sensor is powered with \u003cstrong\u003e9 … 36 VDC\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote before ordering:\u003c\/strong\u003e A railway standard is not documented – the sheet refers to a \"Technical Approval from Deutsche Bahn AG\" but does not provide a number or date, and EN 50121, EN 50155, and EN 45545 are not mentioned; proof of compliance must be requested from the manufacturer before use in railway applications. The 1500 VAC for 60 s is insulation voltage, not continuous operating insulation; an overvoltage category and lightning protection are not specified. The data sheet does not state a degree of protection – the housing is fully potted, an IP code is missing. To change the measuring range, the \u003cstrong\u003econfiguration set with DTM-Control software\u003c\/strong\u003e is required, connection via \u003cstrong\u003eRS 232-C\u003c\/strong\u003e; if configured during operation, the connection to the point heating control is interrupted, and whether the set is still available must be clarified with the manufacturer. A CE mark and explosion protection are not documented.\u003c\/p\u003e\n\u003ch3\u003eAdvantages at a Glance\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003eFits S 49, S 54, UIC 60, and R 65 without modification\u003c\/li\u003e\n\n\u003cli\u003ePt100 4-wire Class A, resolution 0.1 °C\u003c\/li\u003e\n\n\u003cli\u003e4 … 20 mA, reversible to 20 … 4 mA, limits 3.8 … 20.5 mA according to NAMUR\u003c\/li\u003e\n\n\u003cli\u003eGalvanically isolated, insulation voltage 1500 VAC for 60 s\u003c\/li\u003e\n\n\u003cli\u003eHousing 68 × 64 mm stainless steel, fully potted, approx. 1.5 kg\u003c\/li\u003e\n\n\u003cli\u003eClamp with M10 threaded rod, tightening torque 68 Nm\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"octogon GmbH","offers":[{"title":"Default Title","offer_id":57356932677958,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/TXMA_produkt_5edabb5d-a1eb-43c9-8956-cdd96af24a10.webp?v=1789243719","url":"https:\/\/octogon-sensors.com\/en\/products\/txma-rail-temperature-sensor","provider":"octogon GmbH","version":"1.0","type":"link"}