{"title":"Temperature - Room (TR)","description":"\u003ch2\u003eRoom temperature sensors\u003c\/h2\u003e \u003cp\u003eRoom sensors measure air temperature, not the temperature of a medium: cold rooms, refrigeration plants on ships, warehouses, air-conditioning and building services. The housing is screwed to the wall and the short protective tube reaches into the room – no process connection, no process pressure.\u003c\/p\u003e \u003cp\u003eVersions are available that output their resistance directly and versions with a built-in transmitter for 4…20 mA. Some room sensors also measure relative humidity. For measurement in the medium see the \u003ca href=\"\/en\/collections\/temperatur-einschraub-te\"\u003escrew-in sensors\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"tpma-kompakt-temperatursensor-mits","title":"TRMA Room Temperature Sensor HART (MITS)","description":"\u003cp\u003eThe \u003cstrong\u003eTRMA\u003c\/strong\u003e is a room temperature sensor, manufacturer type Müller \u003cstrong\u003eMITS\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIt is built for air-conditioning and cold storage – refrigeration plants on ships, cold rooms, building services. The housing is screwed to the wall, the short protective tube reaches into the room. Two versions are available: the sensing element sits either \u003cstrong\u003edirectly on the connector\u003c\/strong\u003e – the sensor then outputs its resistance – or behind a \u003cstrong\u003eHART transmitter\u003c\/strong\u003e that turns it into 4 … 20 mA.\u003c\/p\u003e\n\u003cp\u003eThe input takes \u003cstrong\u003eone or two Pt100\u003c\/strong\u003e or \u003cstrong\u003ePt1000\u003c\/strong\u003e in 2-, 3- or 4-wire connection, in classes \u003cstrong\u003eA, B and AA\u003c\/strong\u003e. With an amplifier, one Pt100 is provided for. The measuring range runs \u003cstrong\u003ewithout\u003c\/strong\u003e an amplifier from -30 to \u003cstrong\u003e+90 °C\u003c\/strong\u003e, \u003cstrong\u003ewith\u003c\/strong\u003e an amplifier from -30 to \u003cstrong\u003e+80 °C\u003c\/strong\u003e at a smallest span of 50 K – the same difference applies to the working temperature of the device.\u003c\/p\u003e\n\u003cp\u003eThe current output delivers \u003cstrong\u003e4 … 20 mA with HART\u003c\/strong\u003e in the 2-wire loop, overall range 3.6 … 21 mA, with 21 mA on break, short circuit or underrange. Total error is \u003cstrong\u003e0.3 % of the range\u003c\/strong\u003e at \u003cstrong\u003e16 bit\u003c\/strong\u003e resolution, the measuring rate 10 measurements per second, the filter 0 … 99 s. Setting is done in software over HART: LRL, URL, LRV, URV, filter, adjustment and simulation. 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: \u003cstrong\u003ePBT GF30\u003c\/strong\u003e housing in black, flammability UL94 HB, dimensions approx. \u003cstrong\u003e117 × 28 × 32 mm\u003c\/strong\u003e, fastening through two Ø 4.6 mm holes 45.5 mm apart, weight 50 g, any mounting position. The \u003cstrong\u003eprotective tube is fixed at 30 mm and Ø 6 mm\u003c\/strong\u003e – other lengths are not documented. Protection is at least \u003cstrong\u003eIP 65\u003c\/strong\u003e but depends on the chosen connection; the manufacturer gives no assignment. Ten connections are available, from M12×1 to a cable outlet – two sensors do not fit every connector.\u003c\/p\u003e\n\u003cp\u003eConfiguration uses the \u003cstrong\u003eHART interface with USB and software\u003c\/strong\u003e; when communicating through a HART modem a minimum resistance of 250 Ω has to be taken into account. No CE marking is documented in the manufacturer's data sheet and no declaration of conformity is available. UL94 HB is the lowest grade in the series.\u003c\/p\u003e\n\u003ch3\u003eAdvantages at a glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRoom sensor for cold rooms, air-conditioning and building services\u003c\/li\u003e\n\u003cli\u003ePt100 or Pt1000, classes A, B and AA\u003c\/li\u003e\n\u003cli\u003eTwo versions: resistance direct or 4 … 20 mA with HART\u003c\/li\u003e\n\u003cli\u003eRange -30 to +90 °C without, -30 to +80 °C with amplifier\u003c\/li\u003e\n\u003cli\u003eTotal error 0.3 % of the range, 16 bit\u003c\/li\u003e\n\u003cli\u003ePBT GF30 housing, only 50 g, wall fixing 45.5 mm\u003c\/li\u003e\n\u003cli\u003eProtective tube 30 mm, Ø 6 mm\u003c\/li\u003e\n\u003cli\u003eProtection at least IP 65\u003c\/li\u003e\n\u003cli\u003eSetting in software over HART\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"octogon Shop","offers":[{"title":"Default Title","offer_id":57245618700614,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/TRMA_MITS_titelbild_7b20f2eb-2ab1-419e-b0c7-e315d0f60e35.webp?v=1788951931"}],"url":"https:\/\/octogon-sensors.com\/en\/collections\/temperatur-raum-tr.oembed","provider":"octogon GmbH","version":"1.0","type":"link"}