Is There Any Standard Error In A Torque Wrench?
Ans: Yes, like any measuring instrument, torque wrenches have a standard error or tolerance. This is the acceptable range of deviation from the true or target torque value. The standard error of a torque wrench depends on its quality, accuracy, and range.
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Most torque wrenches have a standard error of ±3-5% of the indicated torque value. This means that if the torque wrench is set to apply 100 Nm of torque, the actual torque applied could be anywhere between 95-105 Nm.
However, high-precision torque wrenches may have a lower standard error of ±1-2%. It is important to note that the standard error of a torque wrench can be affected by various factors, such as the angle of the wrench, the condition of the fastener and joint, the temperature, and the operator’s technique.
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To ensure the most accurate torque values, it is recommended to follow the manufacturer’s instructions and perform regular calibration and maintenance of the torque wrench.