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Approach for early diagnosis of load cell "sub-health".<br>
[Abstract] This article presents a concept and method of exact and early diagnosis of the "sub-health" problem of load cells.

[Keywords] early; medical diagnosis; "sub-health"; tons cell; approach.

I. Introduction.

With the continuous growing of enterprise technical improvement, digital evaluating tools have been utilized a growing number of widely in procedure flow, procedure control, as well as settlement as well as dimension. The resistance strain type tons cell (hereinafter referred to as the sensing unit) is a sort of metal elastic body as the pressure.

- Gauging tools with electrical conversion feature, and also sensors are the core parts of digital considering instruments. As a result of the intrinsic characteristics of the sensing unit itself.

And in a complicated and severe atmosphere, its failings are characterized by diversity and intricacy, as well as the failing rate is likewise greater. Existing.

Replacing the sensing unit in the area judgment will not only impact the typical manufacturing rhythm, however also trigger the wind, the furnace, the faulty product and the failing to compute.


The amount, and so on, seriously influence the financial advantages of the venture. tension load cell textile hope that there is a way to advance the sensor failing.

Obtain advised.

After years of expedition, there is a means to precisely diagnose whether the load cell misbehaves or not (shortened as.

" Sub-health") to enhance the effort of upkeep and also accomplish the objective of "zero failure" maintenance.

2. Principles as well as sensations.

The tons cell includes techniques such as auto mechanics, power, and chemistry. The reason for the mistake is made complex and it is tough to judge. Development in failure.

It is without a doubt challenging to detect beforehand that the lots cell is in a "sub-healthy" problem.

The mistakes of the lots cell can be separated right into 3 categories according to the principle: A, triggered by elastic body; B, triggered by electric shock and circuit.

的; C, triggered by the pasting procedure. However whatever kind of failures will certainly be shown with the unbalanced outcome.

The dimension of the absolutely no point output of the lots cell is a representation of the high quality of the production process and also the quality of the layout, as well as it is also a prospective failure.

One of the most evident manifestations.

The no factor output of the tons cell is as well big, which presents a possible threat to the reliability of the sensing unit. load cell 50kn of no factor will certainly additionally make.

On this basis, after expedition, it is located that the empty scale output and also no-load result signal changes of the lots cell. At the very same time, it additionally clarifies the outcome of the vacant range. The adjustment of the outcome of the empty scale is a focused representation of 2 vital technical indicators of the load cell zero factor and linearity.

The lots cell is in the "sub-healthy" condition. Both most common and most sensitive sensations are both most typical and delicate qualities: one is that the evaluating indication often changes absolutely no throughout usage, however it can immediately go back to absolutely no without influencing the weighing. The second is that when the conventional weight is filled throughout the use period, there is usually a minor over-tolerance, however it can be recovered to typical by adjusting the potentiometer. One of these sensations suggests that there are "sub-healthy" sensors in the range. Just how to locate and also identify?

1. Tracking.

( 1) Monitoring of vacant scales with load cells. Under actual evaluating problems, the load-bearing tool considers the body (or load-bearing evaluating.

The structure) is in place, and the mechanical components remain in place. Measure the output worth of each sensing unit of the scale under the excitation voltage, and edit it by placement.

Great number, make an excellent document. This is the output value of the sensor's vacant scale.

( 2) No-load monitoring of the tons cell. Under real evaluating problems, position each sensor of the range.

No-load state, determine the outcome worth of each sensor under the excitation voltage, code the number according to the position, and make a record. This is the transmission.

No-load outcome worth of the sensor. At the exact same time, the input resistance of the sensor is measured, as well as the result resistance and the no-load output are compared to the technological specifications provided by the maker at the manufacturing facility.

( 3) After adjusting the range and also packing with the common weight, it is best to measure each of the ranges under the condition of basic weight loading.

Just the outcome worth of the sensor, number it according to the placement, make a document and also indicate the common weight worth. This is the sensing unit's typical weight outcome.

worth.

2. Tracking.

Identify the time gap of the next measurement according to the location of usage, celebration, setting and also other conditions. For each and every sensor.

The vacant range outcome (or typical weight result), no-load output for tracking dimension.

( 1) Use the production gap to consistently determine the vacant scale output as well as no-load result of each sensing unit of the range.

The conditions can gauge the typical weight outcome of each sensing unit under the exact same typical weight. Make a document and contrast it with the original record.

( 2) When the sensing unit's empty range output (or common weight output) and also no-load output change greatly, the tracking time void must be.

Shorten, the tracking thickness must be enhanced; when the outcome is stable for a long period of time, the monitoring void can be properly extended.

( 3) The exact same load is contrasted on its own at different factors (areas) of the range, as well as the resistance is surpassed, and the empty range of each sensing unit is gauged.

Outcome, no-load result, make a document, and compare to the original record.

This approach is commonly used under fast-paced evaluating conditions to understand the operating status of the range.

( 4) When the sensor's "sub-healthy" phenomenon appears, it is needed to boost the outcome of the empty scale tracking each sensing unit (or.

Common weight result) The gauged density of no-load output, make a document, as well as contrast it with the initial document.

( 5) For electronic sensors, use the same method to enter the empty range inner code worth, empty interior code worth, and also conventional weight internal code value.

Conduct monitoring as well as monitoring, and also make great documents.



The long-lasting security of the zero point of the lots cell is a requirement technological index in the integrity and also security of the sensing unit. On this basis, after expedition, it is located that the vacant range outcome as well as no-load result signal changes of the tons cell. At the very same time, it likewise describes the outcome of the vacant scale. The modification of the outcome of the empty scale is a concentrated representation of 2 important technical indications of the lots cell absolutely no factor and also linearity.

One of these sensations indicates that there are "sub-healthy" sensing units in the scale.

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