{"title":"Static torque sensors for moments","description":"\u003cp\u003e\u003cstrong\u003eStatic torque sensors for moments\u003c\/strong\u003e do not rotate. They are installed between two fixed points and measure the moment as a reaction. Because no signal transmission from a rotating part is necessary, they feature a simpler design, are wear-free, have no speed limit, and are generally more cost-effective and rigid than rotating versions.\u003c\/p\u003e\n\u003ch2\u003eStatic torque sensors for moments: Can also be used on rotating machines\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003eA common misconception: Static does not mean that nothing is allowed to move. It only means that the sensor itself does not rotate.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eEvery moment generated by a machine exerts an equal and opposite reaction moment on its housing. If the motor, gearbox, or brake is not rigidly supported against the frame, but rather via a torque transducer, it measures exactly this reaction moment. The shaft rotates, but the sensor remains stationary. This allows the moment of an operating drive to be captured without having to install a measuring shaft into the drive train.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe second application case concerns processes that do not rotate continuously anyway: tightening, breakaway, opening, closing, and twisting. In these cases, the static transducer is the only logical design to use.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eAdvantages of the static solution\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eNo signal transmission from a rotating part.\u003c\/strong\u003e No slip rings that wear out, no telemetry, no batteries. The wiring is a standard sensor cable.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eNo speed limit and no balancing.\u003c\/strong\u003e Design-related limits such as nominal speed or imbalance are completely eliminated because nothing rotates.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eHigher rigidity.\u003c\/strong\u003e A static transducer does not need to include couplings and can be designed to be more rigid. This is important for processes where the moment rises rapidly, such as during breakaway.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eLonger service life and lower costs.\u003c\/strong\u003e Fewer moving parts mean less wear, and the price for a comparable nominal moment is generally significantly lower than that of a rotating measuring shaft.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eFast processes.\u003c\/strong\u003e Because there is no transmission path between the measurement point and the evaluation unit, the signal chain is short. The limit is then usually determined by the rigidity of your setup, not the sensor.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eWhere the limits lie\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eA static transducer cannot rotate continuously. For drive trains that are intended to run while measurements are being taken, and for everything requiring the speed and rotational angle of the shaft itself, you need \u003ca href=\"\/en\/collections\/drehmomentsensoren-dynamisch\"\u003erotating torque sensors\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eAlso, pay attention to what else is being measured during reaction measurement. Depending on where you provide the support, bearing friction, seal friction, or ventilation losses may or may not be included in the result. For efficiency determinations, it is therefore important to choose the measurement point consciously.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eThe decisive point: support\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eA torque transducer should see only the moment. In a real-world setup, however, other loads always act upon it: the weight of the supported machine, the tension of a belt, axial forces from a coupling, or forces from connected lines and cables.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThese parasitic loads distort the measurement and stress the transducer beyond its limit values. Three rules help:\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIntercept weight separately.\u003c\/strong\u003e The machine should rest on its own bearings or guides so that the transducer only absorbs the moment and does not carry the mass.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eMount on a level, rigid surface.\u003c\/strong\u003e A transducer that is bolted on under tension will measure a zero-point offset that changes with temperature and manifests as drift.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eRelieve the connections.\u003c\/strong\u003e Route cables, hoses, and lines with a loop, not under tension. Any tight connection conducts a moment past the sensor or into it.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eIf you describe your installation situation to us, we will review the support configuration with you. We can also handle \u003ca href=\"\/en\/pages\/prufstandsbau\"\u003etest bench construction\u003c\/a\u003e for complete setups.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eTypical applications\u003c\/h3\u003e\n\u003cul dir=\"ltr\"\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eBolting technology:\u003c\/strong\u003e Tightening and breakaway moments, testing of bolted joints, calibration of screwdrivers and automated systems\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eClosure testing:\u003c\/strong\u003e Opening and closing moments on lids, caps, and closures in the packaging and beverage industry\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eValves:\u003c\/strong\u003e Breakaway and actuation moments on valves, cocks, and flaps\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eFriction:\u003c\/strong\u003e Friction moments on bearings, seals, guides, and joints\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eDrive testing:\u003c\/strong\u003e Reaction measurement on motors, gearboxes, and brakes in test setups\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eOperating forces:\u003c\/strong\u003e Torques on controls, hinges, and springs in ergonomics testing\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3 dir=\"ltr\"\u003eSelection criteria\u003c\/h3\u003e\n\u003cul dir=\"ltr\"\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eNominal moment in both directions of rotation\u003c\/strong\u003e and permissible overload, calculated for the worst-case scenario\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSensitivity to transverse and axial forces\u003c\/strong\u003e as well as bending moments, which is decisive in cases of suboptimal support\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eRigidity and torsion angle\u003c\/strong\u003e if the measurement setup must remain as free of play as possible\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eMechanical connection:\u003c\/strong\u003e Square and hexagon drives for tool and bolting applications, flange and shaft connections for machine setups\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eSignal output:\u003c\/strong\u003e Passive in mV\/V for an existing \u003ca href=\"\/en\/collections\/dms-messverstaerker\"\u003emeasuring amplifier\u003c\/a\u003e, analog with an integrated amplifier, or digital for computer-based evaluation\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003eIf no standard design fits your setup, we can design and manufacture \u003ca href=\"\/en\/pages\/kundenspezifische-kraftaufnehmer-kraftmessdosen\"\u003ecustom transducers\u003c\/a\u003e in-house. If moment and force act simultaneously and need to be recorded separately, \u003ca href=\"\/en\/collections\/mehrachsige-kraftsensoren\"\u003emulti-axis force-torque sensors\u003c\/a\u003e are the appropriate solution.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eTo ensure you measure in Newton meters, we can calibrate the measurement chain \u003ca href=\"\/en\/pages\/kalibrierung-waegezelle-kraftmessdose-kraftaufnehmer-iso17025\"\u003eto ISO 17025\u003c\/a\u003e in our own laboratory upon request. Fundamentals and the differentiation from other types can be found in our overview of \u003ca href=\"\/en\/collections\/drehmomentsensoren\"\u003etorque sensors\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"drehmomentsensor-statisch-trx","title":"MSAA Static Torque Transducer TRX","description":"\u003ch1\u003eStatic Torque Sensor MSAA (TRX) in Class 0.05 or 0.1\u003c\/h1\u003e\n\u003cp\u003eThe MSAA is a static torque sensor designed as a reference transducer for test benches, material testing machines, and calibration laboratories – also as a transfer standard. It is bolted between two flanges and measures both clockwise and counter-clockwise torque. The monolithic stainless steel body is fully laser-welded and achieves IP67 protection; annual drift is below 0.003%.\u003c\/p\u003e\n\u003ch3\u003eKey features at a glance\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eReference class:\u003c\/b\u003e Accuracy class 0.05 or 0.1 according to EURAMET cg-14 – available as separate order codes.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eEight measuring ranges:\u003c\/b\u003e 50 · 100 · 200 · 500 N·m and 1 · 2 · 3 · 5 kN·m in three sizes (flange Ø 80, 127 and 150 mm).\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eLaser-welded, IP67:\u003c\/b\u003e monolithic stainless steel body, fully welded according to EN 60529.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eLong-term stable:\u003c\/b\u003e annual drift \u0026lt; 0.003%, linearity and hysteresis ±0.03%FS each.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eBolted on both sides:\u003c\/b\u003e 6 × M8 (50\/100 N·m), 8 × M12 (200 N·m to 2 kN·m) or 8 × M16 (3 and 5 kN·m), screws of strength class 12.9.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eMIL7M connector option:\u003c\/b\u003e on request instead of the open cable end.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical data at a glance\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eRated output:\u003c\/b\u003e 1 mV\/V · rated output tolerance ±0.1%FS · zero balance ±0.5%FS\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eExcitation:\u003c\/b\u003e recommended 10 V · range 1…15 V · max. 18 V\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eResistances:\u003c\/b\u003e input 700 Ω ±2 · output 705 Ω ±2 · insulation resistance \u0026gt; 5 GΩ\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eRelative error Class 0.05 \/ 0.1:\u003c\/b\u003e repeatability 0°-120°-240° ±0.050% \/ ±0.100% · interpolation ±0.025% \/ ±0.050% · hysteresis ±0.063% \/ ±0.125% · zero point ±0.012%FS \/ ±0.025%FS\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eTemperature influence:\u003c\/b\u003e zero point ±0.020%FS and rated output ±0.010%FS per 10 °C\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eTemperatures:\u003c\/b\u003e reference +23 °C · nominal range 0…+60 °C · operating -10…+70 °C · storage -20…+80 °C\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eMechanical limits:\u003c\/b\u003e safe overload 120%FS · ultimate overload 150%FS · breaking load \u0026gt; 300%FS · transverse load max. 50%FS · permissible dynamic amplitude 75%FS\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eConnection:\u003c\/b\u003e shielded PVC cable 5 m, 6 × 0.25 mm² in six-wire circuit (excitation, sense and signal), shield on housing\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eWeight:\u003c\/b\u003e approx. 1.5 kg (50\/100 N·m) · approx. 3 kg (200 N·m to 2 kN·m) · approx. 4.5 kg (3 and 5 kN·m)\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eConformity:\u003c\/b\u003e CE, RoHS, REACH · applied standards EN 61326-1 (2013) and EN 61010-1 (2013) · directives 2014\/30\/EU, 2014\/35\/EU, 2011\/65\/EU, 2012\/19\/EU, 1907\/2006 · quality system according to EN ISO 9001 · manufacturer's declaration of conformity from 01.04.2016\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eOn request:\u003c\/b\u003e calibration protocol and ACCREDIA calibration certificate according to ISO\/IEC 17025, each clockwise and counter-clockwise\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation instructions\u003c\/h3\u003e\n\u003cp\u003eFor correct measurement, axial forces, transverse forces and bending moments should not occur. If they are present, they must not exceed the permissible values (axial load 19 to 124 kN, transverse load 1.8 to 20 kN per measuring range) and must be reduced if several act simultaneously. The fastening screws are not included in the scope of delivery; the tightening torques are 40 N·m (M8), 140 N·m (M12) and 368 N·m (M16).\u003c\/p\u003e\n\u003cp\u003eNote: For 3 kN·m and 5 kN·m, ACCREDIA calibration cannot be performed in LAT laboratory no. 93; it is possible on request via another accredited laboratory.\u003c\/p\u003e","brand":"octogon Shop","offers":[{"title":"Default Title","offer_id":57245601530182,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/MSAA_TRX_produkt_968e086d-74e9-46e6-8aae-c9b897ca0a0e.png?v=1788384919"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/collections\/MSAA_TRX_produkt_968e086d-74e9-46e6-8aae-c9b897ca0a0e.png?v=1789566872","url":"https:\/\/octogon-sensors.com\/en\/collections\/statische-drehmomentsensoren.oembed","provider":"octogon GmbH","version":"1.0","type":"link"}