{"title":"Bluetooth transmitters for load cells and force transducers","description":"\u003cp\u003eWith \u003cstrong\u003eBluetooth transmitters for load cells and force transducers\u003c\/strong\u003e, your smartphone is the display device. A transmitter module at the sensor excites the measuring bridge, digitizes the signal and transmits it via Bluetooth Low Energy to a phone or tablet. No base station, no PC software, no approval from your IT department. On request we supply \u003cstrong\u003esensor and module connected and ready to use\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003eBluetooth transmitters for load cells and force transducers: the difference from industrial wireless transmission\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003eBluetooth is not the newer version of wireless, but built for a different purpose. Four points distinguish the technologies.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cstrong\u003eThe receiver is a device you already have.\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eWith wireless telemetry, every transmitter needs a matching receiver, that is, a base station, handheld display or output module. With Bluetooth, the smartphone takes on this role. This considerably lowers the entry cost and makes the system ready for use immediately.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eThe range is limited, but greater than expected.\u003c\/strong\u003e With a clear line of sight, 30 to 90 m can be achieved, depending on the age and quality of the receiving device. Inside buildings, walls, steel structures and full vessels attenuate the signal considerably. Bluetooth therefore reaches across a weighing point or a loading zone, but not as far as the control room.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cstrong\u003eBattery life is the real advantage.\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eTwo AA cells last around ten months in continuous operation at one reading per second, and in standby the consumption is in the microampere range. This makes not only handheld measurement possible but also long-term monitoring, for which conventional wireless telemetry would need a permanent power supply.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003e\u003cstrong\u003eThere is no connection to the plant.\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eBluetooth provides no 4…20 mA signal, no relay contact and no fieldbus interface. If the value is to go into a control system, this is the wrong technology; in that case use a \u003ca href=\"\/en\/collections\/waegetransmitter\"\u003eweight transmitter\u003c\/a\u003e or a wireless system with an output module from our \u003ca href=\"\/en\/collections\/funk-messtechnik\"\u003ewireless measurement technology\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eOne point that decides the purchase in companies with a strict IT policy: Bluetooth needs no Wi-Fi access, no network approval and no firewall rule. The connection runs directly between the module and the end device.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eWhat the app does\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eThe app for iOS and Android is free of charge. It shows readings as a digital display, dial gauge, vessel graphic or chart, and from these you build your own dashboard with the level of detail your application needs. The modules are also configured and calibrated in the app; no laptop is needed.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe calculation function is particularly useful: displayed values can be defined as a mathematical expression from several transmitter modules, functions and constants. This lets you add up three load cells under a vessel to get the total weight, without installing a junction box and without cabling between the cells. Differences, averages and conversions into your own units are possible in the same way.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eBluetooth Low Energy also allows more than a point-to-point connection. One module can serve several receivers at the same time by broadcast, and one end device can display several modules. In practice this means several colleagues see the same value on their own phones, and one phone monitors several measuring points.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eWhich sensors can be connected\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eThe modules work with strain gauge full bridges from 85 to 5000 ohms in 4-wire configuration. With several sensitivity ranges from ±6 to ±48 mV\/V, they cover not only load cells with the usual 2 mV\/V but also directly bonded strain gauges and sensors with a high sensitivity, for which conventional weighing electronics are set too insensitively.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThis turns any existing load cell, any \u003ca href=\"\/en\/collections\/waegezellen-kraftaufnehmer\"\u003eforce transducer\u003c\/a\u003e and any strain gauge installation on a component into a wireless measuring device. The temperature range of -40 to +85 °C also allows use outdoors and in cold storage, and the housed version is protected to IP67.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eFor sensor manufacturers and integrators\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eIn addition to the housed version, the modules are available as a matchbox-sized OEM board that can be built into your own sensor housing. The advertising format and BLE services are documented, so you can integrate the module into your own app. If you want to equip your product with a Bluetooth interface without developing measuring electronics yourself, this is the fastest route. For the mechanical side, we can develop the matching \u003ca href=\"\/en\/pages\/kundenspezifische-kraftaufnehmer-kraftmessdosen\"\u003ecustom transducer\u003c\/a\u003e on request.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eWhere it pays off in everyday use\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eService and maintenance.\u003c\/strong\u003e The technician arrives at the plant with a sensor and a phone, measures, documents and emails the report on site. No laptop, no cable, no setup.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMobile inspections.\u003c\/strong\u003e Checking rope tension, testing lifting accessories, measuring tensile forces on guy lines. Wherever the measuring point is a different one every day.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eCommissioning and troubleshooting.\u003c\/strong\u003e Reading values while standing at the machine instead of walking back and forth between the control cabinet and the measuring point.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eLong-term measurement without infrastructure.\u003c\/strong\u003e Mount the module, set a low measuring rate, read out after months. No cable route and no power connection at the measuring point.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMeasuring equipment that gets passed on.\u003c\/strong\u003e Separate PINs for configuration, display and calibration prevent settings from being changed unintentionally. If you lend devices or pass them on to customers, this protects the calibration while everyone can still read the value.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eReady to connect and calibrated\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eIf you order a module together with a load cell or force transducer, we connect the sensor and module for you free of charge. On request we calibrate the measuring chain \u003ca href=\"\/en\/pages\/kalibrierung-waegezelle-kraftmessdose-kraftaufnehmer-iso17025\"\u003eto ISO 17025\u003c\/a\u003e in our own laboratory, so you measure in kg or kN rather than in mV\/V.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eAlternatives\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eMobile display devices without a smartphone can be found under \u003ca href=\"\/en\/collections\/handheld-messgeraete\"\u003ehandheld measuring devices\u003c\/a\u003e, industrial wireless transmission with plant connection under \u003ca href=\"\/en\/collections\/funk-messtechnik\"\u003ewireless measurement technology\u003c\/a\u003e, and measurements on rotating components under \u003ca href=\"\/en\/collections\/wireless-telemetrie\"\u003etelemetry\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eOur engineers will advise you directly on choosing the sensor, module and calibration.\u003c\/p\u003e","products":[{"product_id":"efma-wireless-bluetooth-transmitter","title":"EFMA wireless Bluetooth transmitter","description":"\u003cp\u003e\u003cstrong\u003eWireless Bluetooth Transmitter B24\u003c\/strong\u003e with app for iOS \u0026amp; Android devices.\u003c\/p\u003e\n\u003cp\u003eOur Bluetooth\u003csup\u003e®\u003c\/sup\u003e radio system was developed as a direct connection between mobile devices and sensors and delivers high-quality measurement data to iOS and Android phones and tablets.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFree Service\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eIf you purchase the Wireless Bluetooth Transmitter together with a load cell, force transducer or similar, we will connect the sensor and load cell for you free of charge. If we have any open questions, one of our sales representatives will contact you.\u003c\/p\u003e\n\u003cp\u003eWith a wide sensitivity range for many strain sensors, such as \u003cstrong\u003eload cells\u003c\/strong\u003e or \u003cstrong\u003eforce transducers\u003c\/strong\u003e, the transmitter is ideally suited for weight, force, pressure and strain gauge measurements.\u003c\/p\u003e\n\u003cp\u003eData from \u003cstrong\u003emultiple sensors\u003c\/strong\u003e can be received. Our point-to-point system transmits multiple transmitters to one or more mobile devices and uses Bluetooth Low Energy (BLE) 4.0, which is remarkably power-saving.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eOur mobile app interface creates clear dashboards for practical measurements and is \u003cstrong\u003efree of charge\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFeatures Wireless Bluetooth Transmitter\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e✅Wide \u003cstrong\u003esensitivity input\u003c\/strong\u003e - choose between +\/- 6mV\/V, +\/- 12 mV\/V, +\/- 24 mV\/V, +\/- 48mV\/V\u003c\/p\u003e\n\u003cp\u003e✅Noise-free resolution up to 110,000 counts (16.75 bits)\u003c\/p\u003e\n\u003cp\u003e✅Up to \u003cstrong\u003e3 months continuous operation\u003c\/strong\u003e at three samples per second.\u003c\/p\u003e\n\u003cp\u003e✅Monitoring of up to 12 transmitters by a single device or multiple devices\u003c\/p\u003e\n\u003cp\u003e✅\u003cstrong\u003eFree View App\u003c\/strong\u003e for IOS \u0026amp; Android\u003c\/p\u003e\n\u003cp\u003e✅Ideal for near-field monitoring up to 90 meters (295 ft)\u003c\/p\u003e\n\u003cp\u003e✅Available in C-housing (IP67) with integrated battery holder for two standard AA batteries or in bare board format for OEM applications (on request)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e \u003ca title=\"octogon Shop\" style=\"color: #d84f1b;\" rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/Wireless_bluetooth_transmitter_B24_datasheet.pdf?v=1744187931\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"octogon Online Shop","offers":[{"title":"Default Title","offer_id":53914840858950,"sku":"B24-SSBC","price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/Wireless_bluetooth_transmitter_B24_1.png?v=1736262279"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/collections\/Wireless_bluetooth_transmitter_B24_1.png?v=1788959498","url":"https:\/\/octogon.org\/en\/collections\/bluetooth-transmitters-load-cells-force-transducers.oembed","provider":"octogon GmbH","version":"1.0","type":"link"}