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HOME > BLOG

Identifying torque tool calibration drift

Author:SAIVS Time:2023-09-07 Click:

Identifying when a torque tool is drifting out of calibration is 

crucial to ensure accurate and reliable torque measurements. 

Here are some signs that can indicate a torque tool is drifting out of calibration:

1. Inconsistent Readings: If you notice significant variations 

in the torque readings obtained from the tool when applying 

the same amount of force, it may indicate that the tool is 

losing its calibration. The readings may fluctuate even if 

you consistently apply torque in a controlled manner.

2. Unexpected Fastener Behavior: When using the torque tool,

if you observe that fasteners are either overtightened or

undertightened compared to your desired torque specification,

it could be an indication of a calibration issue. 

If you consistently follow the same procedure but obtain inconsistent

results, it's worth investigating the calibration status of your tool.

3. Physical Damage or Wear: Examine the physical condition

of your torque tool regularly. Look for any visible signs 

of damage, wear, or deformation on critical components 

such as handles, heads, or scales. Physical damage can affect

the accuracy and reliability of torque measurements.

torque-tool(1).webp

4. Known Calibration Interval: Torque tools typically have 

recommended calibration intervals provided by manufacturers 

or regulatory standards (e.g., ISO 6789). If you exceed this 

interval without recalibrating your tool, there's an increased 

likelihood that it has drifted out of calibration.

5. Previous History: Keep track of previous calibrations and 

their results for each torque tool in use. If there has been a 

noticeable change in performance since the last successful 

calibration—for example, if subsequent measurements consistently 

deviate from previous ones—it suggests that recalibration may be necessary.

6. Comparative Measurements: Perform comparative measurements 

using multiple calibrated tools to cross-check their readings 

against each other during routine operations. Any significant deviations 

between tools could indicate potential drift in one or more instruments.

7. Regular Calibration Program: Implementing a proactive calibration 

program ensures regular maintenance and verification of all

measuring equipment at predetermined intervals based

on manufacturer recommendations or industry standards.

If you suspect that your torque tool is drifting out of 

calibration based on any combination of these signs, it's essential

to take immediate action by discontinuing its use until recalibration

can be performed by an accredited service 

provider or using appropriate reference standards.


Tag: Preset Torque Wrench Hydraulic Torque Wrenches torque wrench

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