{"title":"Single-channel weight transmitters for load cells","description":"\u003cp\u003e\u003cstrong\u003eSingle-channel weighing transmitters for load cells\u003c\/strong\u003e have one load cell input and evaluate one weighing point. Multiple cells under a container or platform are combined in a summing box and transmitted as a single signal. This is the most cost-effective solution and sufficient for most systems.\u003c\/p\u003e\n\u003ch2\u003eWhen is a single-channel weighing transmitter for load cells sufficient?\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003eOne channel is always sufficient when you need a weight value and don't need to know where it comes from. This applies to the vast majority of applications: container and silo scales with fixed load distribution, platform and floor scales, roller conveyors, retrofits to existing scales with an existing junction box.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eOnly if you need to monitor each cell individually or electronically balance the corner load is it worthwhile to opt for a \u003ca href=\"\/en\/collections\/waegetransmitter-mehr-kanal\"\u003emulti-channel device\u003c\/a\u003e. The required interface and sampling rate are independent of this; more information can be found in the overview of \u003ca href=\"\/en\/collections\/waegetransmitter\"\u003eweighing transmitters\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eMultiple load cells on one input\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eThree or four cells under a container are connected in parallel in a summing box. The box combines the bridges and provides a sum signal that corresponds to the total weight. Two points need to be considered.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eFirst, the \u003cstrong\u003ebridge resistance\u003c\/strong\u003e. Parallel-connected cells put a greater strain on the transmitter's supply voltage because the total resistance is divided. Each transmitter specifies a minimum permissible value; check the datasheet to see how many cells of your series it can supply before planning. If more cells are used than permitted, you will need a box with its own power supply or a second device.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eSecond, \u003cstrong\u003ecorner load adjustment\u003c\/strong\u003e. Because all cells are evaluated together, the transmitter cannot compensate for differences between them. For platform scales where the load rests at varying points, the adjustment is therefore carried out in the summing box using trim potentiometers. This is generally not necessary for containers with uniform load distribution.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eSuitable summing boxes and junction boxes can be found in the \u003ca href=\"\/en\/collections\/zubehoer-waegezellen\"\u003eaccessories for load cells\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eConnecting 4-wire or 6-wire\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eFor short cables, a 4-wire connection is sufficient. If the cable is longer or located in an area with fluctuating temperatures, the resistance of the supply lines will distort the result, and this will be temperature-dependent, which will manifest as a slow drift during operation. The 6-wire connection with additional sense lines measures the supply voltage directly at the cell and compensates for this error. If your transmitter and cell support it, use it; extensions should always be implemented using 6-wire technology.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eRoute the load cell cable separately from power lines and ground the shield at one end. Frequency converters and contactor circuits in the same cable tray are one of the more common causes of unstable readings.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eWhat else you need\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eThe appropriate sensors can be found under \u003ca href=\"\/en\/collections\/waegezellen-kraftaufnehmer\"\u003eload cells and force transducers\u003c\/a\u003e, and the installation kit for containers under \u003ca href=\"\/en\/collections\/waegemodule\"\u003eweighing modules\u003c\/a\u003e. If an operator needs to read the value, a \u003ca href=\"\/en\/collections\/waegeindikatoren\"\u003eweighing indicator\u003c\/a\u003e is a better choice than a transmitter in the control cabinet.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003ePrice, data sheet, and CAD model are available online for each item. Our engineers will advise you directly on the design of summing boxes, number of cells, and cabling.\u003c\/p\u003e","products":[{"product_id":"etlg-waegetransmitter-analog-und-profinet-io","title":"ETLG weight transmitter, analog and ProfiNet-IO","description":"\u003cp\u003e\u003cstrong\u003eWeight transmitters\u003c\/strong\u003e with \u003cstrong\u003eanalog and ProfiNet-IO\u003c\/strong\u003e output serve as the interface between the \u003cstrong\u003eload cell\u003c\/strong\u003e, \u003cstrong\u003eweighing platform\u003c\/strong\u003e or other \u003cstrong\u003estrain gauge sensors\u003c\/strong\u003e and a \u003cstrong\u003ePLC unit \u003c\/strong\u003ein industrial applications. Weight transmitter indicator with 6-digit red LED display (8 mm digit height). Compact design with space-saving narrow construction.  4 buttons for system calibration. 6 indicator LEDs. Dimensions: 25 x 115 x 120 mm.\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFeatures of the weight transmitters\u003cbr\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e✅Weight transmitter for mounting on the rear wall of the control panel on\u003cbr\u003eOmega\/DIN rail\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✅6-digit semi-alphanumeric red LED display\u003cbr\u003e(8 mm digit height)\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003e✅RS485 serial interface for communication via\u003cbr\u003eModBus RTU, ASCII or continuous unidirectional\u003cbr\u003etransmission protocols\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✅3 relay outputs controlled by setpoints or via protocols\u003c\/p\u003e\n\u003cp\u003e✅2 opto-isolated digital PNP inputs: status readout via serial\u003cbr\u003ecommunication protocols\u003c\/p\u003e\n\u003cp\u003e✅1 load cell input\u003c\/p\u003e\n\u003cp\u003e✅The analog output provides:\u003cbr\u003eCurrent signal: 0...20 mA; 4...20 mA (up to 300 ohm)\u003cbr\u003eVoltage signal: 0...10 V; 0...5 V; ±10 V; ±5 V (min. 10k ohm)\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/L-TLB_Datenblatt.pdf?v=1711463053\" style=\"color: #d84f1b;\" title=\"octogon Shop\" rel=\"noopener\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCAD model:\u003cbr\u003e\u003ca rel=\"noopener\" title=\"octogon Shop\" style=\"color: #d84f1b;\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/TLB.stp?v=1712652129\" target=\"_blank\"\u003e3D data\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"octogon Shop","offers":[{"title":"4...20mA; 0...10V; ±10V","offer_id":49312646660422,"sku":"","price":220.0,"currency_code":"EUR","in_stock":true},{"title":"Profinet","offer_id":49312646693190,"sku":"","price":418.0,"currency_code":"EUR","in_stock":true},{"title":"EtherCAT","offer_id":49312646725958,"sku":"","price":451.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/ETLG_TLB__product_freigestellt.png?v=1786622909"},{"product_id":"etla-analoger-waegetransmitter","title":"ETLA analog weight transmitter","description":"\u003cp\u003e\u003cstrong\u003eAnalog weight transmitter L-TLE (RS485)\u003c\/strong\u003e for installation on the rear wall of the control panel on Omega\/DIN rail or in the box (on request) and with backlit LCD display, 38x16 mm, 2 lines of 8 digits (5 mm digit height). Suitable for applications requiring a \u003cstrong\u003efast response time\u003c\/strong\u003e \u003cstrong\u003eof the analog output\u003c\/strong\u003e (update time 0.003...4 sec. \/ 10...30 Hz). Dimensions: 90x95x60 mm. 3-position selector, DIP switch and rotary knob.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFeatures of the L-TLE Analog Weight Transmitter\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e✅Serial \u003cstrong\u003einterface RS485\u003c\/strong\u003e for communication via \u003cstrong\u003eModBus RTU\u003c\/strong\u003e protocols\u003c\/p\u003e\n\u003cp\u003e✅Easy adjustment of zero point and full scale without multimeter, but by digital rotary control (encoder)\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003cp\u003e✅4 load cell inputs\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✅ \u003cstrong\u003e16 bit\u003c\/strong\u003e \u003cstrong\u003efast\u003c\/strong\u003e \u003cstrong\u003eanalog output\u003c\/strong\u003e in current or voltage: 0...20 mA, 4...20 mA; 0...10 V, 0...5 V; ±10 V, ±5 V; response time: 3 ms)\u003c\/p\u003e\n\u003cp\u003e✅Connections to: PLC via analog output, PC\/PLC via RS485 (up to 99 instruments with amplifiers, up to 32 without amplifiers), up to 8 load cells in parallel with junction box\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✅Simultaneous display of the load cell response signal expressed in mV and the value of the analog output\u003c\/p\u003e\n\u003cp\u003e\u0026nbsp;\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca title=\"octogon Shop\" style=\"color: #d84f1b;\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/L-TLE_Datenblatt.pdf?v=1711463052\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCAD model:\u003cbr\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/TLE.stp?v=1712652139\" style=\"color: #d84f1b;\" title=\"octogon Shop\" target=\"_blank\"\u003eL-TLE CAD model\u003c\/a\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"octogon Shop","offers":[{"title":"Default Title","offer_id":49310775411014,"sku":"","price":182.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/waegetransmitter_L-TLE.png?v=1713431511"},{"product_id":"etle-analoger-waegetransmitter-4-20-ma-oder-0-10-v-ip67-gehaeuse","title":"ETLE analog weight transmitter, 4–20 mA or 0–10 V, IP67 enclosure","description":"\u003cp\u003eThe \u003cstrong\u003eETLE\u003c\/strong\u003e is an analog weighing transmitter with a \u003cstrong\u003e4–20 mA or 0–10 V\u003c\/strong\u003e output.\u003c\/p\u003e\n\u003cp\u003eIt transmits the signal from tension and compression load cells as an analog signal to a controller and is compatible with standard analog\/digital PLC cards.\u003c\/p\u003e\n\u003cp\u003eThe transmitter has its own load cell input and, via a junction box, can accommodate \u003cstrong\u003eup to 4 load cells at 350 Ω\u003c\/strong\u003e in 4- or 6-wire technology; the load cell excitation is \u003cstrong\u003e5 V DC\/60 mA\u003c\/strong\u003e. The measuring range is \u003cstrong\u003e1 to 3 mV\/V\u003c\/strong\u003e, linearity is \u003cstrong\u003e0.01% full scale\u003c\/strong\u003e, and thermal drift is \u003cstrong\u003e0.005% full scale\/°C\u003c\/strong\u003e. The analog output provides \u003cstrong\u003e4 to 20 mA\u003c\/strong\u003e (max. 300 Ω) or \u003cstrong\u003e0 to 10 V DC\u003c\/strong\u003e (min. 10 kΩ).\u003c\/p\u003e\n\u003cp\u003eZero point and full scale are adjusted via 12-turn potentiometers, and sensitivity is set via 3 DIP switches; two additional DIP switches select between unidirectional (tension or compression) and bidirectional (tension and compression) operation. Calibration is performed using calibration weights or a load cell simulator. Power supply is \u003cstrong\u003e12 to 24 V DC\u003c\/strong\u003e at \u003cstrong\u003e2 W\u003c\/strong\u003e, the operating temperature range is from \u003cstrong\u003e-20 °C to +60 °C\u003c\/strong\u003e, and the storage temperature is from \u003cstrong\u003e-30 °C to +80 °C\u003c\/strong\u003e. The bare circuit board measures \u003cstrong\u003e45 x 26 x 11 mm\u003c\/strong\u003e, while the version in an \u003cstrong\u003eIP67\u003c\/strong\u003e ABS housing with two M12x1.5 cable glands measures \u003cstrong\u003e94 x 53 x 40 mm\u003c\/strong\u003e. A circular circuit board with \u003cstrong\u003eØ 20 mm\u003c\/strong\u003e and 8 mm height with solder terminals is available upon request.\u003c\/p\u003e\n\u003ch3\u003eAdvantages at a glance\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003eAnalog weighing transmitter for tension and compression load cells\u003c\/li\u003e\n\n\u003cli\u003eAnalog output 4 to 20 mA or 0 to 10 V DC\u003c\/li\u003e\n\n\u003cli\u003eUp to 4 load cells at 350 Ω via junction box\u003c\/li\u003e\n\n\u003cli\u003eMeasuring range 1 to 3 mV\/V, linearity 0.01% full scale\u003c\/li\u003e\n\n\u003cli\u003e45 x 26 x 11 mm circuit board for compact installation\u003c\/li\u003e\n\n\u003cli\u003eIP67 ABS housing with two M12x1.5 cable glands\u003c\/li\u003e\n\n\u003cli\u003eAdjustment via 12-turn potentiometers and DIP switches\u003c\/li\u003e\n\n\u003cli\u003eOptionally available as a circular circuit board with Ø 20 mm\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"octogon GmbH","offers":[{"title":"Default Title","offer_id":56812564939078,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/ETLE_L-TLC_titelbild.png?v=1788184595"},{"product_id":"etlf-waegetransmitter-24-bit-rs485-mit-modbus-rtu","title":"ETLF weight transmitter, 24 bit, RS485 with ModBus RTU","description":"\u003cp\u003eThe \u003cstrong\u003eETLF\u003c\/strong\u003e is a weighing transmitter for mounting on the back panel of the control cabinet on an Omega\/DIN rail, type \u003cstrong\u003eTLS\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIt provides the weight value analogously to a PLC or digitally via RS485 to a PC, controller, and remote display.\u003c\/p\u003e\n\u003cp\u003eThe device has \u003cstrong\u003e4 load cell inputs\u003c\/strong\u003e and processes \u003cstrong\u003eup to 8 load cells with 350 Ω\u003c\/strong\u003e via a junction box with a supply of \u003cstrong\u003e5 V DC\/120 mA\u003c\/strong\u003e. The A\/D converter operates with \u003cstrong\u003e24 bits\u003c\/strong\u003e and \u003cstrong\u003e16,000,000 digits\u003c\/strong\u003e and delivers \u003cstrong\u003e80 conversions per second\u003c\/strong\u003e. The measuring range is \u003cstrong\u003e±19.5 mV\u003c\/strong\u003e, the sensitivity of the load cells is \u003cstrong\u003e±3 mV\/V\u003c\/strong\u003e, linearity is \u003cstrong\u003e\u0026lt; 0.01% full scale\u003c\/strong\u003e, and thermal drift is \u003cstrong\u003e\u0026lt; 0.0005% full scale\/°C\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe opto-isolated analog output operates with \u003cstrong\u003e16 bits\u003c\/strong\u003e and delivers \u003cstrong\u003e0 to 20 mA\u003c\/strong\u003e or \u003cstrong\u003e4 to 20 mA\u003c\/strong\u003e (up to 300 Ω) or \u003cstrong\u003e0 to 10 V\u003c\/strong\u003e (min. 10 kΩ). In addition, there are \u003cstrong\u003e2 opto-relay outputs\u003c\/strong\u003e, \u003cstrong\u003e2 opto-isolated digital PNP inputs\u003c\/strong\u003e, and \u003cstrong\u003eRS485\u003c\/strong\u003e with \u003cstrong\u003eModBus RTU\u003c\/strong\u003e, ASCII, or continuous transmission. The 6-digit semi-alphanumeric red LED display has a digit height of \u003cstrong\u003e8 mm\u003c\/strong\u003e; the instrument is configured with the free PC software Instrument Manager. The housing measures \u003cstrong\u003e123 x 92 x 50 mm\u003c\/strong\u003e, the power supply is \u003cstrong\u003e12 to 24 V DC\u003c\/strong\u003e at \u003cstrong\u003e5 W\u003c\/strong\u003e, and the operating temperature range is from \u003cstrong\u003e-20 °C to +60 °C\u003c\/strong\u003e. Upon request, an \u003cstrong\u003eIP67\u003c\/strong\u003e polycarbonate enclosure and an \u003cstrong\u003eATEX II 3GD\u003c\/strong\u003e version for Zone 2-22 are available; the device is a UL-recognized component for the USA and Canada.\u003c\/p\u003e\n\u003ch3\u003eAdvantages at a glance\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003eWeighing transmitter for Omega\/DIN rail, 123 x 92 x 50 mm\u003c\/li\u003e\n\n\u003cli\u003eUp to 8 load cells with 350 Ω via junction box\u003c\/li\u003e\n\n\u003cli\u003eA\/D converter 24 bits, 16,000,000 digits, 80 conversions per second\u003c\/li\u003e\n\n\u003cli\u003eOpto-isolated analog output with 16 bits in current or voltage\u003c\/li\u003e\n\n\u003cli\u003eRS485 with ModBus RTU, ASCII or continuous transmission\u003c\/li\u003e\n\n\u003cli\u003eIP67 enclosure and ATEX II 3GD version for Zone 2-22 upon request\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","brand":"octogon GmbH","offers":[{"title":"Default Title","offer_id":56812564971846,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/ETLF_TLS_titelbild.png?v=1788184595"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/collections\/waegetransmitter_L-TLB4.png?v=1788943308","url":"https:\/\/octogon.org\/en\/collections\/single-channel-weight-transmitters.oembed","provider":"octogon GmbH","version":"1.0","type":"link"}