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Daily Inspection

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Daily inspection of force gauges

1. Checking the displayed value

It may be obvious, but the accuracy of measurement values is the most important aspect for any measuring instrument, not just for force gauges. Calibration is the process of checking whether the displayed values are within the accuracy range, so calibration is an essential maintenance procedure for measuring instruments. In the case of force gauges, calibration involves a simple concept: verifying if the displayed values, obtained by suspending a precise weight, are accurate within the defined accuracy range. However, in reality, calibration involves complex and costly factors such as meticulous management of the weights, special facilities, personnel training, and considering gravity. Due to these complexities, it is often more practical for customers to rely on the calibration services provided by manufacturers or calibration organizations.

Even if you entrust the regular calibration to professionals like our company, it is crucial for customers to perform routine inspections, such as suspending weights to check the values and promptly detecting any abnormalities. These simple methods serve as effective risk management measures. Here, we will introduce the key points for inspection as a reference.

A) Simple method: Regularly check the changes in values by suspending weights.

After calibration (or immediately after purchase for new products), suspend a weight (not exceeding the maximum load capacity of the force gauge) and record the displayed value. Regularly repeat this process with the same weight to confirm if there are any changes in the displayed value. For example, if the recorded value after calibration shows 19.59N when a 2kg dumbbell is suspended, and suddenly it exceeds 20N, it indicates an abnormal condition where the measurement is not being performed with the same accuracy as before.

Even if you accurately suspend a 2kg weight, the precise value may differ depending on the location. For example, in Aichi Prefecture in Japan, where our company is located, it may be 19.59N, while in other regions even within Japan, it might show a different value. Therefore, it is important to suspend the same weight in the same location for each inspection.
If the weight being suspended is too heavy, it can overload the sensor of the force gauge, leading to malfunction. When using fixtures or verification dishes to suspend weights on the force gauge, ensure that the combined weight falls within 90% of the maximum permissible force capacity.

For more detailed advice on routine inspections (such as which fixtures to use, the recommended weight of the weights, and what to be cautious about), as well as information on how IMADA performs calibration, we have a document (PDF format, 5 pages) that explains these topics. When you conduct routine inspections, we encourage you to refer to this document. You can request the document using the contact button below.

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B) More advanced : Verify the validity of measurement values using IMADA's verification dishes.

We offer special fixtures and stands for calibrating the force gauge as a customization order. If you could prepare weights (*), it is possible to perform routine inspections using the method shown in the video below. (*Please note that Imada does not sell weights, so please contact a weight manufacturer for inquiries.)

(Within the maximum load capacity allowed by the force gauge, suspend a weight of the desired load value using the weight (constant value) you would like to verify, and confirm if the displayed value and the weight value are within the defined accuracy range.)"

We have prepared a document (PDF format, 5 pages) that provides information about how IMADA performs calibration and includes details about daily inspections, including important points to consider and advice. When conducting routine inspections, we recommend referring to the document along with the video. You can request the document by using the contact button below.

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2. Other inspection items

While verifying the displayed values is the most crucial aspect, there are other recommended practices for routine inspections.

If you would like more detailed information about daily inspections for force gauges , please submit a request using the form below. We will provide a detailed document in PDF format, approximately 5 pages long, which includes points to consider in IMADA's calibration process and information about what aspects are sufficient for routine inspections (the document will be the same as the one mentioned in point 1).

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