{"title":"Torque manual measuring instruments and testing devices for tools","description":"\u003cp\u003e\u003cstrong\u003eTorque hand-held measuring devices and test equipment for tools\u003c\/strong\u003e or hand-held torque meters test tools where they are used. Torque wrenches, screwdrivers, and cordless screwdrivers can be checked, documented, and sorted out in case of deviations within a few minutes, without having to send the tool away.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eWhy torque tools need to be tested regularly\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eA torque wrench is a measuring instrument, not a tool in the conventional sense. Its spring fatigues with every use, a fall can misadjust it, and a single overload can permanently shift it. The problem is: you cannot see it. A wrench that releases ten percent too early clicks just as satisfactorily as one that is correct.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eTherefore, quality management systems and relevant standards for hand-operated torque tools require periodic testing. Intervals based on time or number of operations—whichever comes first—are common. Anyone working in series production, maintenance of safety-critical connections, or audited processes requires a test device and a report for this.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eA dedicated hand-held measuring device pays off quickly: instead of sending tools away and replacing them for weeks, you can test them in-house, and the tools remain in service.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eThe crucial point: capturing peak values correctly\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eThis is the function that distinguishes useful devices from useless ones, and it is rarely explained.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eA releasing torque wrench yields at the set value. It is exactly this release torque that is the measurement value of interest. If the user continues to pull after this, the torque rises again, sometimes significantly above the release value. A device that simply saves the highest measured value will then display a value that is too high, and you might judge a perfectly fine wrench as faulty.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eTherefore, check whether the device detects the first peak value and not just the absolute maximum. For indicating wrenches and screwdrivers, the reverse applies: there, the maximum value or the real-time curve is the correct mode. A useful test device offers both.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eWhat you should look for when choosing\u003c\/h3\u003e\n\u003cul dir=\"ltr\"\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eMeasuring range suitable for the tool.\u003c\/strong\u003e A device for 1000 Nm does not measure small screwdriver torques meaningfully. Anyone testing both needs two ranges or a system with interchangeable transducers.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eAccuracy in relation to the test object.\u003c\/strong\u003e The test equipment should be significantly more accurate than the tool being tested; as a rule of thumb, a ratio of four to one or better is often used. Otherwise, you are testing your measurement uncertainty instead of your wrench.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eBoth directions of rotation\u003c\/strong\u003e, because left-hand tools must also be tested.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eDrive\/Mount.\u003c\/strong\u003e Square drives in common sizes, hex drives for screwdrivers, matching your tool inventory.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eOperating modes.\u003c\/strong\u003e Real-time display, peak value, and first-peak detection of the release point.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eUnits.\u003c\/strong\u003e Nm and cNm; for international requirements, additionally lbf·ft or kgf·cm.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eStorage and export.\u003c\/strong\u003e For the test report, it counts how many measurements are stored and whether they can be exported as a file.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003ePower supply and robustness\u003c\/strong\u003e, because the device is used in the workshop and not in the laboratory.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch2 dir=\"ltr\"\u003eTorque hand-held measuring devices and test equipment for tools: The setup determines the result\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003eEven the best test device provides nonsense if the pulling is done incorrectly. Four points make the difference:\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eRigid mounting.\u003c\/strong\u003e The device or the transducer belongs on a stiff surface or in a fixture. A yielding frame distorts the curve and thus the release point.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eEngage at the correct point.\u003c\/strong\u003e For torque wrenches, the effective length is defined. If you pull further out or in, the applied torque no longer matches the wrench's display.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003ePull vertically and in one plane.\u003c\/strong\u003e Force applied at an angle creates side components that the transducer partially includes in the measurement.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cstrong\u003eIncrease slowly and evenly.\u003c\/strong\u003e A jerk creates a dynamic overshoot, which appears as a value that is too high. Especially with short wrenches, the difference is significant.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eMore than just tool testing\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eBeyond tool inspection, hand-held measuring devices are suitable for any torque that one wants to capture on-site once: breakaway torques on screw connections and fittings, operating torques on valves and control elements, opening torques on lids and caps, friction torques on bearings and joints, and control measurements in incoming goods and final inspection.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eFor force measurements in the same mobile application, take a look at our \u003ca href=\"\/en\/collections\/handheld-messgeraete\"\u003ehand-held measuring devices for strain gauge sensors\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eDifferentiation\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eIf you need to measure permanently in a setup instead of testing on the move, \u003ca href=\"\/en\/collections\/drehmomentsensoren-statisch\"\u003estatic torque sensors\u003c\/a\u003e are the suitable design. For measurements on rotating shafts, you need \u003ca href=\"\/en\/collections\/drehmomentsensoren-dynamisch\"\u003erotating torque measurement shafts\u003c\/a\u003e. The fundamentals for all three types can be found in the overview of \u003ca href=\"\/en\/collections\/drehmomentsensoren\"\u003etorque sensors\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 dir=\"ltr\"\u003eThe test equipment itself must be calibrated\u003c\/h3\u003e\n\u003cp dir=\"ltr\"\u003eA test device whose calibration has expired makes every report created with it worthless. We calibrate your torque measuring devices \u003ca href=\"\/en\/pages\/kalibrierung-waegezelle-kraftmessdose-kraftaufnehmer-iso17025\"\u003eaccording to ISO 17025\u003c\/a\u003e in our own laboratory and provide the corresponding certificate.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eTell us the measuring range, tool types, and required documentation, and our engineers will suggest the appropriate device.\u003c\/p\u003e","products":[{"product_id":"drehmomentmessgeraet-hand-microtor","title":"MHAA Torque Sensor for Screwdrivers microTor","description":"\u003ch1\u003eTorque sensor MHAA (microTor) for screwdrivers – 5, 10 and 25 N·m\u003c\/h1\u003e\n\u003cp\u003eThe MHAA measures the torque actually delivered by a screwdriver during tightening, directly in the force flow. It is placed between the drill chuck and the bit: the hex shank is inserted into the quick-change chuck of the screwdriver, and the bit into the hex receptacle of the sensor. This allows electric and pneumatic screwdrivers to be tested and calibrated.\u003c\/p\u003e\n\u003ch3\u003eThe most important features at a glance\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eThree measuring ranges:\u003c\/b\u003e 5 N·m (1 mV\/V), 10 N·m and 25 N·m (2 mV\/V each).\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eDirect in the force flow:\u003c\/b\u003e Tool holder with quick-change coupling, 1\/4\" hex – receptacle according to ISO 1173 Form F 6.3, shank according to ISO 1173 Form E 6.3.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eCompact:\u003c\/b\u003e Total length 92 mm, housing diameter 25 mm, body length 42 mm.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eAccuracy:\u003c\/b\u003e Linearity and hysteresis ≤ ±0.20 %, temperature influence on zero point and sensitivity each ≤ ±0.02 % per 1 °C.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eRobust design:\u003c\/b\u003e Measuring body made of stainless steel, housing made of aluminum, protection class IP40 according to EN 60529.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eRated speed:\u003c\/b\u003e 4000 min⁻¹.\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\u003eSensitivity:\u003c\/b\u003e 1 mV\/V at 5 N·m · 2 mV\/V at 10 and 25 N·m · Sensitivity tolerance ≤ ±0.2 % · Zero balance ≤ ±0.5 %\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eSupply:\u003c\/b\u003e 1…15 V, max. 18 V\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eResistances:\u003c\/b\u003e Input 430 Ω ±20 · Output 350 Ω ±5 · Insulation resistance \u0026gt; 2 GΩ\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eTemperatures:\u003c\/b\u003e Reference +23 °C · Operating -10…+70 °C · Storage -20…+80 °C\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eMechanical limits:\u003c\/b\u003e Rated torque 100 %FS · Limit torque 150 %FS · Breaking torque \u0026gt; 300 %FS · Permissible oscillation width 70 %FS\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cb\u003eConnection:\u003c\/b\u003e Shielded PVC cable 105 °C, Ø 5.2 mm, 4 × 0.35 mm², 3 m – wires red (+ supply), black (– supply), white (+ signal), yellow (– signal), shield to housing\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, 2015\/863, 2012\/19\/EU, 1907\/2006 · Quality system according to EN ISO 9001 · Manufacturer's declaration of conformity dated 01.04.2019\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 for clockwise and counter-clockwise rotation\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3\u003eAccessories\u003c\/h3\u003e\n\u003cp\u003eMechanical accessories are not required for this model: both couplings are part of the sensor. Incremental encoders and square couplings are not available – these are options for the rotating models MDAA (RT2) and MDAB (RT8).\u003c\/p\u003e","brand":"octogon Shop","offers":[{"title":"Default Title","offer_id":57245601497414,"sku":null,"price":0.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/files\/MHAA_microTor_produkt_7e31b8bb-0631-498d-ac56-4b9272cf2eb0.png?v=1788384908"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0819\/5558\/6374\/collections\/6-04_Hand.webp?v=1789568160","url":"https:\/\/octogon-sensors.com\/en\/collections\/drehmoment-handmessgeraete.oembed","provider":"octogon GmbH","version":"1.0","type":"link"}