{"product_id":"efmf-oem-sendemodul-fuer-dehnungsmessbruecken","title":"EFMF OEM transmitter module for strain gauge bridges","description":"\u003cp\u003eThe \u003cstrong\u003eEFMF\u003c\/strong\u003e is an OEM transmitter module for strain gauge bridges: load cells, torque transducers, strain gauges, pressure measurement modules and other four-wire bridges. The board measures only \u003cstrong\u003e37.5 × 16.8 × 6.6 mm\u003c\/strong\u003e and thus fits into the sensor housing — turning a conventional load cell into a wireless load cell.\u003c\/p\u003e\n\u003cp\u003eThe input directly accepts the mV\/V signal and provides \u003cstrong\u003e5 V bridge excitation for up to four load cells\u003c\/strong\u003e. The measurement electronics operate with 24-bit internal resolution, 4 ppm\/°C zero drift and 5 ppm\/°C gain drift, and are \u003cstrong\u003ecustomer-calibratable over up to nine points\u003c\/strong\u003e — with linearization and output in freely selectable units. Data is transmitted at up to 200 readings per second to all T24 receivers: handheld displays, large displays, analog outputs, base stations.\u003c\/p\u003e\n\u003cp\u003eTwo designs are available: \u003cstrong\u003eT24-SAi\u003c\/strong\u003e with an antenna integrated into the radio module and a range of up to 500 m, \u003cstrong\u003eT24-SAe\u003c\/strong\u003e with a UFL socket for an external antenna and up to 800 m. Three sensitivities can be ordered: ±3.1 mV\/V as the basic version, plus ±4.5 mV\/V and 20 mV\/V.\u003c\/p\u003e\n\u003cp\u003eThe low-power modes enable long battery life: the module can shut down between transmissions or — from a handheld display or base station — be completely switched off and woken up again. With a pair of AA cells and twelve measurement sessions of five minutes per day, approximately two years of operating time can be achieved, and about five years with D cells. The radio link operates on the license-free 2.4 GHz DSSS band with 10 mW and \u003cstrong\u003e128-bit AES encryption\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eAdvantages at a glance\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003eMiniature board 37.5 × 16.8 × 6.6 mm for installation in the sensor\u003c\/li\u003e\n\n\u003cli\u003eBridge excitation 5 V DC, bridge resistance 85 to 5000 Ω, up to four 350-Ω bridges in parallel\u003c\/li\u003e\n\n\u003cli\u003eSensitivity ±3.1 mV\/V, optional ±4.5 mV\/V or 20 mV\/V\u003c\/li\u003e\n\n\u003cli\u003e24 bit internal, up to 200 updates per second, transmission interval 5 ms to 1 day\u003c\/li\u003e\n\n\u003cli\u003eCalibration over up to 9 points, stored in the module\u003c\/li\u003e\n\n\u003cli\u003eBidirectional measurement — tension and compression\u003c\/li\u003e\n\n\u003cli\u003eSupply 2.1 to 3.6 V DC, quiescent current typically 5 µA\u003c\/li\u003e\n\n\u003cli\u003eRange up to 500 m (SAi) or up to 800 m (SAe) in open field\u003c\/li\u003e\n\n\u003cli\u003e128-bit AES encryption, FCC, ETSI and IC approvals\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp\u003ePlease note: The module is \u003cstrong\u003enot reverse polarity protected\u003c\/strong\u003e, the maximum voltage is 3.6 V, and the supply must be able to provide 300 mA for a short time at startup. The cable between the module and the measuring grid should remain under 3 m, because the voltage drop in the cable in four-wire measurement affects the factory calibration. The bare board has no protection class — for this, there are the housing versions T24-ACM-SA and T24-ACMi-SA with IP67, and T24-ACMm-SA with IP50.\u003c\/p\u003e\n\u003cp\u003eThe suitable receivers can be found under \u003ca href=\"\/en\/collections\/funk-messtechnik\"\u003eWireless Measurement Technology\u003c\/a\u003e, load cells for equipping under \u003ca href=\"\/en\/collections\/waegezellen-kraftaufnehmer\"\u003eLoad Cells \u0026amp; Force Transducers\u003c\/a\u003e.\u003c\/p\u003e","brand":"octogon GmbH","offers":[{"title":"Default Title","offer_id":57266203164998,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/EFMF_T24-SA__titelbild.png?v=1788559607","url":"https:\/\/octogon-sensors.com\/en\/products\/efmf-oem-transmitter-module-for-strain-gauge-bridges","provider":"octogon GmbH","version":"1.0","type":"link"}