Torque Calibration
Torque tools are essential for maintaining accuracy and long-lasting performance, as they ensure that the device meets its specified criteria, ensuring the highest level of accuracy and dependability in measurements. Calibration is crucial to prevent general wear and tear on the tool's internal components, which can lead to inaccurate and untrustworthy data. Our team of calibration professionals can evaluate various torque instruments and make necessary modifications to maintain compliance with their specified standards, ranges, and accuracy.
ISO 6789-1:2017 and ISO 6789-2:2017 are two calibration standards developed by the International Organization for Standardization (ISO) for torque tools classified as Type I (indicating) and Type II (setting). These standards specify the conditions and steps required to maintain compliance with different types of torque tools.
ISO 6789-1:2017 provides a declaration of conformance for a Type I or Type II hand torque tool, covering conformance tests, marking specifications, and minimal requirements. It covers hand torque tools used for carefully tightening screws and nuts. ISO 6789-2:2017 can be used to confirm the accuracy of hand torque tools intended for both Type I indication applications and Type II setting applications.
Calibration & Repair Options
We can calibrate torque equipment at your location or in our lab as a nationwide business. To find out which option best fits your needs, contact our calibration team:
• We will arrange for your torque equipment to be picked up and transported to our lab by courier;
• Send your torque equipment to our calibration lab by your preferred means or courier;
• On-location adjustment
For individuals with large equipment that cannot be shipped by courier, on-site calibrations are advised.
Torque wrenches are commonly used for tightening bolts on wheels in the automotive industry and piping applications like high pressure natural gas stations. Failure to tighten flanged connection bolts in accordance with manufacturer specifications could damage vital equipment, result in a serious accident, or leak gas.
Torque wrenches are widely used tools in the industry, with beam type being the most common due to their affordability. These tools have a lever arm between the wrench head and handle, allowing users to view torque applied to the fastener using a scale attached to it. Click type torque wrenches produce an audible sound when the desired torque is obtained, preventing overtightening and potentially causing damages. Each Click torque wrench must be reset to zero after each usage and require a minimum of one year's calibration.
Electronic torque wrenches use a strain gauge connected to the torsion rod to measure torque. The generated signal is displayed on a digital display after being transduced to the desired unit (N×m or lb×ft) by a transducer. Torque wrenches fall into two categories: Type I: Indicating Torque Tools, which display torque through an electronic display, mechanical scale, or dial, and Type II: Setting Torque Tools, which are pre-set to a specific torque value.
Type I torque tools have a maximum permissible deviation of 6% for A and D torque wrenches, 6% for B, C, and E torque wrenches, and 4% for Class G torque wrenches. Due to frequent use, torque wrenches quickly lose their accuracy and setting points, necessitating routine calibration. The tool's use and conditions affect its calibration integrity. For at least 5000 cycles, a torque wrench should stay within the tolerances listed in the tables. However, this period is frequently shortened for a variety of applications.