{"product_id":"tlmb-temperatur-grenzwertschalter-metl-l","title":"TLMB Temperature Limit Switch (METL-L)","description":"\u003cp\u003eThe \u003cstrong\u003eTLMB\u003c\/strong\u003e is a temperature limit switch with Pt100 and relay output, manufacturer type Müller \u003cstrong\u003eMETL-L\u003c\/strong\u003e. It does not output a measured value, but switches a relay as soon as the limit value is reached.\u003c\/p\u003e\n\u003cp\u003eIt is screwed into pipes or tanks and switches there without an evaluation unit, for example directly to a digital input of a PLC. The process connection and protective tube are made of \u003cstrong\u003e1.4571\u003c\/strong\u003e, the protective tube measures Ø 6 mm as standard or Ø 9 mm; the insertion length ranges from \u003cstrong\u003e50 to 1000 mm\u003c\/strong\u003e according to the key, the system pressure is \u003cstrong\u003ePN 25\u003c\/strong\u003e. The housing body and lid are made of PBT GF30, the circuit boards are potted, and the protection class is \u003cstrong\u003eat least IP 65\u003c\/strong\u003e. The weight is approximately \u003cstrong\u003e140 g\u003c\/strong\u003e, and the mounting position is arbitrary.\u003c\/p\u003e\n\u003cp\u003eThe switching point is set \u003cstrong\u003eon site with a magnet\u003c\/strong\u003e: without tools and without opening the housing. Instead of a display, there is a red LED, \u003cstrong\u003e360° visible\u003c\/strong\u003e – it lights up as long as the relay is active.\u003c\/p\u003e\n\u003cp\u003eThe input has a \u003cstrong\u003ePt100 in 3-wire circuit\u003c\/strong\u003e of class \u003cstrong\u003eB\u003c\/strong\u003e, class A as an option, in the range of \u003cstrong\u003e-50 ... +200 °C\u003c\/strong\u003e with an accuracy of \u003cstrong\u003e±0.5 °C\u003c\/strong\u003e. The switching point is set to \u003cstrong\u003e100 °C\u003c\/strong\u003e ex works, the hysteresis is \u003cstrong\u003e0.1 °C\u003c\/strong\u003e as standard. The output is a \u003cstrong\u003erelay with changeover contact\u003c\/strong\u003e: 1 A at 30 VDC or 0.3 A at 125 VAC at resistive load, for \u003cstrong\u003emore than 100,000 switching cycles\u003c\/strong\u003e. The switch is powered by \u003cstrong\u003e24 ... 30 VDC\u003c\/strong\u003e at approx. 35 mA including the relay circuit; the electrical connection is \u003cstrong\u003eM12x1 eight-pole\u003c\/strong\u003e as the only option.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease note before ordering:\u003c\/strong\u003e The manufacturer's overview page contradicts the data sheet – it states an open collector with 30 V and 200 mA, the data sheet states a changeover relay with 1 A and ±0.5 °C. We use the values from the data sheet; the output type must be confirmed with the manufacturer before ordering. Measuring and configuring are not possible simultaneously: For HART, pin 5 is connected via a 250 Ω resistor, and in this connection, the relay is not functional. Only the switching point can be changed with the magnet; hysteresis, switching delay, and damping are only possible via the HART tool, interface \u003cstrong\u003eDEV-HM\u003c\/strong\u003e. The ambient temperature is not the medium temperature: The medium can be up to +200 °C, the electronics in the head only up to +80 °C. A CE mark, explosion protection, and SIL or PL classification are not documented.\u003c\/p\u003e\n\u003ch3\u003eAdvantages at a glance\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003ePt100 3-wire, Class B, Class A as an option\u003c\/li\u003e\n\n\u003cli\u003eRange -50 to +200 °C, accuracy ±0.5 °C\u003c\/li\u003e\n\n\u003cli\u003eSwitching point set on-site with magnet\u003c\/li\u003e\n\n\u003cli\u003eChangeover relay 1 A at 30 VDC, more than 100,000 switching cycles\u003c\/li\u003e\n\n\u003cli\u003eRed LED, 360° visible\u003c\/li\u003e\n\n\u003cli\u003eProtective tube 1.4571, Ø 6 or Ø 9 mm, PN 25\u003c\/li\u003e\n\n\u003cli\u003eAt least IP 65, potted circuit boards, approx. 140 g\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"octogon GmbH","offers":[{"title":"Default Title","offer_id":57356931825990,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/TLMB_produkt_cbb01634-a42b-404a-a6b6-905e93e134d2.webp?v=1789243717","url":"https:\/\/octogon-sensors.com\/en\/products\/tlmb-temperatur-grenzwertschalter-metl-l","provider":"octogon GmbH","version":"1.0","type":"link"}