Notes

Approach for early diagnosis of load cell "sub-health".<br>
[Abstract] This post presents a concept as well as technique of exact as well as very early medical diagnosis of the "sub-health" problem of load cells.

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

I. Intro.

With the continual deepening of enterprise technical transformation, digital evaluating tools have actually been utilized increasingly more extensively in procedure circulation, process control, and also settlement and dimension. The resistance strain kind load cell (hereinafter referred to as the sensing unit) is a kind of metal flexible body as the force.

- Determining tools with electric conversion feature, as well as sensors are the core parts of electronic evaluating instruments. Because of the fundamental characteristics of the sensing unit itself.

And also in a complex and harsh atmosphere, its failings are identified by diversity and intricacy, and the failing rate is also higher. Existing.

Changing the sensor in the area judgment will certainly not only influence the typical manufacturing rhythm, but also trigger the wind, the furnace, the malfunctioning item and the failure to determine.

The quantity, etc, seriously affect the financial benefits of the enterprise. Maintenance employees really hope that there is a method to progress the sensing unit failing.

Get advised.

After years of expedition, there is a method to properly identify whether the tons cell is bad or otherwise (abbreviated as.

" Sub-health") to enhance the effort of upkeep and also achieve the purpose of "absolutely no failing" upkeep.

2. Phenomena and principles.

The tons cell includes self-controls such as technicians, electrical energy, as well as chemistry. The cause of the fault is complicated and also it is challenging to judge. Formation in failure.

It is undoubtedly challenging to diagnose in advancement that the lots cell is in a "sub-healthy" problem.


The faults of the load cell can be separated into 3 categories according to the concept: A, brought on by flexible body; B, brought on by electrical shock and circuit.

的; C, brought on by the pasting procedure. No matter what kind of failings will be shown with the out of balance outcome.

The size of the absolutely no point output of the lots cell is a representation of the high quality of the production process and also the high quality of the design, and also it is likewise a potential failure.

One of the most obvious symptoms.

The absolutely no point output of the lots cell is too huge, which postures a potential danger to the reliability of the sensing unit. The change of absolutely no point will likewise make.

On this basis, after expedition, it is discovered that the empty range result and also no-load outcome signal adjustments of the load cell. At the exact same time, it also clarifies the result of the empty range. The adjustment of the result of the empty range is a concentrated representation of two crucial technical signs of the load cell zero point and also linearity.

The lots cell is in the "sub-healthy" condition. One of these phenomena suggests that there are "sub-healthy" sensors in the scale.

1. Surveillance.

( 1) Surveillance of vacant scales with lots cells. Under actual evaluating conditions, the load-bearing gadget evaluates the body (or load-bearing considering.

The framework) is in place, as well as the mechanical components remain in place. Procedure the output value of each sensing unit of the scale under the excitation voltage, and modify it by setting.

Good number, make a good record. This is the output worth of the sensing unit's vacant range.

( 2) No-load tracking of the lots cell. Under real weighing conditions, put each sensing unit of the range.

No-load state, gauge the output value of each sensing unit under the excitation voltage, code the number according to the setting, and also make a record. This is the transmission.

No-load result worth of the sensing unit. At the exact same time, the input insusceptibility of the sensing unit is measured, as well as the result impedance as well as the no-load outcome are compared to the technological specifications given by the maker at the factory.

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

Only the outcome value of the sensing unit, number it according to the position, make a record as well as suggest the common weight value. This is the sensor's basic weight result.

value.

2. Tracking.

Figure out the time space of the next measurement according to the area of usage, event, setting and various other conditions. For each sensor.

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

( 1) Utilize the production space to routinely determine the vacant range output as well as no-load result of each sensor of the scale.

The conditions can gauge the standard weight output of each sensor under the exact same basic weight. Make a document as well as compare it with the initial document.

( 2) When the sensing unit's vacant scale output (or typical weight output) and also no-load output modification greatly, the monitoring time gap should be.

Shorten, the monitoring density must be boosted; when the result is steady for a long period of time, the tracking void can be appropriately expanded.

( 3) The very same lots is contrasted on its own at different points (areas) of the scale, as well as the resistance is gone beyond, and also the empty scale of each sensing unit is measured.

Output, no-load output, make a record, as well as contrast with the initial document.

This approach is commonly utilized under busy weighing conditions to understand the operating standing of the range.

( 4) When the sensing unit's "sub-healthy" sensation appears, it is essential to enhance the outcome of the empty range monitoring each sensing unit (or.

Conventional weight result) The measured thickness of no-load outcome, make a document, and also compare it with the initial record.

( 5) For electronic sensing units, use the same technique to go into the vacant scale internal code value, empty inner code value, and also basic weight inner code value.

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



The long-lasting security of the no point of the tons cell is a prerequisite technical index in the integrity and security of the sensor. On this basis, after exploration, it is discovered that the empty range output and also no-load result signal modifications of the load cell. At the very same time, it also explains the result of the vacant scale. check weigher load cells of the output of the vacant scale is a concentrated representation of two essential technological indications of the load cell absolutely no point and also linearity.

One of these sensations suggests that there are "sub-healthy" sensors in the range.

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