{"title":"Temperature - Magnetic (TM)","description":"","products":[{"product_id":"tmmb-oberflaechen-temperatursensor-auf-haftmagnet","title":"TMMB surface temperature sensor on magnet","description":"\u003cp\u003eThe \u003cstrong\u003eTMMB\u003c\/strong\u003e is a surface temperature sensor on a holding magnet, manufacturer type Müller \u003cstrong\u003eMETS-WTM\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIt is placed on a pipe or a vessel and holds itself – no drilling, no process connection, no intervention in the medium. The spring-loaded measuring face presses against the surface, the magnet pulls with \u003cstrong\u003e66 N\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThis device has no display and no keys\u003c\/strong\u003e – it is set exclusively over HART. Otherwise it is identical to the \u003cstrong\u003eTMMA\u003c\/strong\u003e (METS-WSM), which carries the display. Anyone who wants to read the value on site orders the TMMA.\u003c\/p\u003e\n\u003cp\u003eThe input is a \u003cstrong\u003ePt100 in 4-wire connection\u003c\/strong\u003e in classes A, B and AA (B 1\/3 DIN), with a range of \u003cstrong\u003e-50 … +200 °C\u003c\/strong\u003e at a smallest span of 50 K; up to -50 … +250 °C on request. The output is \u003cstrong\u003e4 … 20 mA with HART\u003c\/strong\u003e in the 2-wire loop, current range 3.8 … 20.5 mA, with 3.6 mA on short circuit and 21 mA on break. Accuracy is \u003cstrong\u003e0.3 % of the range\u003c\/strong\u003e at \u003cstrong\u003e16 bit\u003c\/strong\u003e, the response time 20 ms, the measuring rate 10 measurements per second, the filter 0 … 99 s.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003etwo limit contacts\u003c\/strong\u003e are PNP or NPN with 30 VDC \/ 200 mA, optionally 1000 mA; switching point and hysteresis are adjustable across the whole measuring range, the switching delay from 0.0 to 999.9 s, and failsafe behavior as well. Supply comes from the HART current loop with \u003cstrong\u003e12 … 40 VDC\u003c\/strong\u003e, load R = (UB − 12 V) \/ 21 mA, with reverse polarity protection.\u003c\/p\u003e\n\u003cp\u003eMechanically: holding magnet in \u003cstrong\u003eAlnico 500\u003c\/strong\u003e, measuring face Ø 6 mm spring-loaded with 1.5 mm travel, sensor body stainless steel \u003cstrong\u003e1.4571\u003c\/strong\u003e, PBT GF30 housing, connection either at the side or on top, weight approx. 259 g, system pressure PN 25, protection at least \u003cstrong\u003eIP 65\u003c\/strong\u003e at the electronics.\u003c\/p\u003e\n\u003cp\u003eThree points the manufacturer leaves open and that belong in the planning. \u003cstrong\u003eThe sensor sits with the magnet directly on the hot surface.\u003c\/strong\u003e The measuring face may reach +200 °C, the electronics in the head only +80 °C – how much heat travels into the head is not documented, and above +85 °C the electronics can be destroyed. The \u003cstrong\u003egalvanic isolation applies only between the switching outputs and the amplifier\u003c\/strong\u003e, not against the loop and not against the surface the magnet sits on. And how the \u003cstrong\u003eholding force changes with temperature\u003c\/strong\u003e the source does not say.\u003c\/p\u003e\n\u003cp\u003eTen electrical connections are available – which one carries how many limit contacts is not a free choice: two contacts are only possible on M12 five- and eight-pin, on MIL and on the cable version; on Deutsch DT04 four-pin and on Super Seal, none. Configuration uses the \u003cstrong\u003eHART interface with USB and software\u003c\/strong\u003e, order number 01310-00220; when communicating through a HART modem a resistance of 250 Ω has to be taken into account. No CE marking is documented and no declaration of conformity is available.\u003c\/p\u003e\n\u003ch3\u003eAdvantages at a glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eMeasuring without intervening in the process – holding magnet with 66 N\u003c\/li\u003e\n\u003cli\u003eSpring-loaded measuring face Ø 6 mm, 1.5 mm travel\u003c\/li\u003e\n\u003cli\u003ePt100 4-wire, classes A, B and AA\u003c\/li\u003e\n\u003cli\u003eMedium -50 to +200 °C, up to +250 °C on request\u003c\/li\u003e\n\u003cli\u003e4 … 20 mA with HART, accuracy 0.3 % of the range\u003c\/li\u003e\n\u003cli\u003eTwo limit contacts with adjustable delay\u003c\/li\u003e\n\u003cli\u003eSensor body stainless steel 1.4571, magnet Alnico 500\u003c\/li\u003e\n\u003cli\u003eProtection at least IP 65\u003c\/li\u003e\n\u003cli\u003eVersion with display available as TMMA\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"octogon Shop","offers":[{"title":"Default Title","offer_id":57245618766150,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/TMMB_METS-WTM_titelbild_762e2e44-6288-4034-aa0b-09e27d501197.webp?v=1788951932"},{"product_id":"tmma-oberflaechen-temperatursensor-auf-haftmagnet-mit-anzeige","title":"TMMA surface temperature sensor on magnet, with display","description":"\u003cp\u003eThe \u003cstrong\u003eTMMA\u003c\/strong\u003e is a surface temperature sensor on a magnetic base with a display and two limit contacts, manufacturer type Müller \u003cstrong\u003eMETS-WSM\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIt is placed on pipes, motors, and housings where no drilling is allowed – attached instead of installed, without interfering with the medium. The spring-loaded measuring surface \u003cstrong\u003eØ 6 mm\u003c\/strong\u003e with 1.5 mm travel presses onto the surface, and the Alnico 500 magnetic base holds with \u003cstrong\u003e66 N\u003c\/strong\u003e. The sensor body is made of stainless steel \u003cstrong\u003e1.4571\u003c\/strong\u003e; with approx. \u003cstrong\u003e259 g\u003c\/strong\u003e, \u003cstrong\u003ePN 25\u003c\/strong\u003e and at least \u003cstrong\u003eIP 65\u003c\/strong\u003e for the electronics, the mounting position is arbitrary.\u003c\/p\u003e\n\u003cp\u003eThe device features a four-digit 7-segment display with a head that can be \u003cstrong\u003erotated by approximately 330°\u003c\/strong\u003e and a display that can be mirrored by 180°. Settings are made on the device using \u003cstrong\u003ethree buttons\u003c\/strong\u003e or via HART; the measured value can be read on-site without a host computer. The \u003cstrong\u003etwo limit contacts\u003c\/strong\u003e operate as PNP or NPN with 30 VDC and 200 mA; switching delay and failsafe can be set up to \u003cstrong\u003e999.9 s\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eMeasurement is performed with a \u003cstrong\u003ePt100 in 4-wire circuit\u003c\/strong\u003e in classes A, B, and AA in the range \u003cstrong\u003e-50 … +200 °C\u003c\/strong\u003e with a smallest span of 50 K. The output is \u003cstrong\u003e4 … 20 mA with HART\u003c\/strong\u003e in the 2-wire loop; the accuracy of the measuring amplifier is \u003cstrong\u003e0.3% of the range\u003c\/strong\u003e at 16 bits. The sensor is powered from the HART current loop with \u003cstrong\u003e12 … 40 VDC\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBefore ordering, please note:\u003c\/strong\u003e The ambient temperature is not the medium temperature – the measuring surface can withstand up to +200 °C, but the electronics in the head only up to +80 °C, and above +85 °C they can be damaged; the sensor sits with the magnet directly on the hot surface, the source does not say how much heat reaches the head. How the adhesive force of 66 N changes with temperature is not documented; the fastening must be checked before use on hot surfaces. Galvanic isolation applies only between switching outputs and measuring amplifier, not against the loop and not against the surface on which the magnet sits. Two limit contacts are only available with M12 five- and eight-pole as well as MIL; a cable gland is not listed. The data sheet only mentions up to -50 … +250 °C on request. For configuration, the \u003cstrong\u003eHART interface with USB and software\u003c\/strong\u003e (01310-00220) is used. A CE mark, a declaration of conformity, and explosion protection are not documented in the data sheet. The identical version without display and buttons is the \u003cstrong\u003eTMMB\u003c\/strong\u003e (METS-WTM).\u003c\/p\u003e\n\u003ch3\u003eAdvantages at a glance\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003eAttached instead of installed – magnetic base with 66 N from Alnico 500\u003c\/li\u003e\n\n\u003cli\u003eFour-digit display, head rotatable by approx. 330°, three buttons or HART\u003c\/li\u003e\n\n\u003cli\u003ePt100 4-wire, classes A, B, and AA, medium -50 … +200 °C\u003c\/li\u003e\n\n\u003cli\u003e4 … 20 mA with HART, accuracy 0.3% of range\u003c\/li\u003e\n\n\u003cli\u003eTwo limit contacts, switching delay up to 999.9 s\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"octogon GmbH","offers":[{"title":"Default Title","offer_id":57356931858758,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/TMMA_produkt_81355919-023e-421b-8b55-2077eb02789f.webp?v=1789243717"}],"url":"https:\/\/octogon.org\/en\/collections\/temperature-magnetic-tm.oembed","provider":"octogon GmbH","version":"1.0","type":"link"}