Quality Weighing Indicator & factory

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According to their applications, weighing instruments in thermal power plants fall into two categories: special weighing instruments for boiler maintenance (electronic crane scales and loss-in-weight feeders) and fuel weighing instruments for routine use (belt scales and truck scales). These two categories differ in functions and metering requirements: electronic crane scales and truck scales are subject to mandatory verification, belt scales require calibration, and timing scales are verified or calibrated as needed. Nevertheless, scientific verification/calibration and standardized daily maintenance and management are required for all of them to guarantee metering precision. A comprehensive daily maintenance and management strategy is established from four aspects: routine cleaning and inspection, periodic in-depth maintenance, emergency fault handling and professional personnel management. Proper on-site verification/calibration and standardized daily maintenance and management of weighing instruments can effectively eliminate metering deviations, reduce fault frequency, extend equipment service life and sustain stable operation of weighing instruments. It provides solid support for the accurate routine production and smooth boiler maintenance of thermal power plants, and also offers references for the daily maintenance and management of weighing instruments in similar thermal power plants.

.gtr-container-x7k2m{font-family:Verdana,Helvetica,"Times New Roman",Arial,sans-serif;font-size:14px;color:#1a1a2e;line-height:1.6;text-align:left;padding:16px;box-sizing:border-box;} .gtr-container-x7k2m *{box-sizing:border-box;} .gtr-container-x7k2m p{margin:0 0 16px 0;font-size:14px;line-height:1.6;text-align:left;color:#1a1a2e;} .gtr-container-x7k2m p:last-child{margin-bottom:0;} .gtr-container-x7k2m .gtr-title-x7k2m{font-size:18px;font-weight:bold;color:#0000FF;margin:0 0 14px 0;line-height:1.4;letter-spacing:0.2px;} .gtr-container-x7k2m .gtr-accent-x7k2m{color:#0000FF;font-weight:bold;} .gtr-container-x7k2m .gtr-block-x7k2m{border-left:3px solid #0000FF;padding:12px 16px;margin:0 0 16px 0;border-radius:0 6px 6px 0;box-shadow:0 1px 3px rgba(0,0,255,0.08);} .gtr-container-x7k2m .gtr-block-x7k2m p{margin:0;} .gtr-container-x7k2m .gtr-table-wrap-x7k2m{overflow-x:auto;margin:0 0 16px 0;border-radius:6px;box-shadow:0 1px 4px rgba(0,0,255,0.10);} .gtr-container-x7k2m table{width:100%;border-collapse:collapse !important;border-spacing:0 !important;border:1px solid #0000FF !important;font-size:14px;margin:0 !important;} .gtr-container-x7k2m th{border:1px solid #0000FF !important;padding:10px 12px !important;text-align:left !important;font-weight:bold !important;color:#0000FF !important;font-size:14px !important;line-height:1.5 !important;vertical-align:top !important;word-break:normal !important;overflow-wrap:break-word !important;} .gtr-container-x7k2m td{border:1px solid #b3b3ff !important;padding:10px 12px !important;text-align:left !important;font-size:14px !important;line-height:1.6 !important;vertical-align:top !important;color:#1a1a2e !important;word-break:normal !important;overflow-wrap:break-word !important;} .gtr-container-x7k2m ul,.gtr-container-x7k2m ol{list-style:none !important;margin:0 0 16px 0;padding:0;font-size:14px;} .gtr-container-x7k2m ul li,.gtr-container-x7k2m ol li{position:relative;padding-left:20px;margin:0 0 8px 0;font-size:14px;line-height:1.6;text-align:left;} .gtr-container-x7k2m ul li::before{content:"•" !important;position:absolute !important;left:0 !important;color:#0000FF;font-weight:bold;} .gtr-container-x7k2m ol li::before{content:counter(list-item) "." !important;position:absolute !important;left:0 !important;color:#0000FF;font-weight:bold;} .gtr-container-x7k2m a{color:#0000FF;text-decoration:none;border-bottom:1px solid rgba(0,0,255,0.35);transition:color .2s,border-color .2s;} .gtr-container-x7k2m a:hover{color:#0000cc;border-bottom-color:#0000cc;} .gtr-container-x7k2m .gtr-btn-x7k2m{display:inline-block;padding:8px 18px;border-radius:6px;border:1px solid #0000FF;color:#0000FF;font-size:14px;font-weight:bold;cursor:pointer;transition:background-color .2s,color .2s,box-shadow .2s;box-shadow:0 1px 3px rgba(0,0,255,0.12);} .gtr-container-x7k2m .gtr-btn-x7k2m:hover{background-color:#0000FF;color:#ffffff;box-shadow:0 2px 8px rgba(0,0,255,0.28);} @media (min-width:768px){ .gtr-container-x7k2m{padding:28px 32px;} .gtr-container-x7k2m p{margin-bottom:18px;} .gtr-container-x7k2m .gtr-title-x7k2m{font-size:18px;margin-bottom:16px;} .gtr-container-x7k2m .gtr-block-x7k2m{padding:16px 22px;margin-bottom:20px;} .gtr-container-x7k2m .gtr-table-wrap-x7k2m{margin-bottom:20px;} .gtr-container-x7k2m th,.gtr-container-x7k2m td{padding:12px 16px !important;} } Result verification is a key step in the preparation of new projects and serves as critical evidence to demonstrate that a technical laboratory possesses the corresponding testing capability. The preferred verification approach is to participate in externally organized proficiency testing, or conduct inter-laboratory comparisons with laboratories that already hold the relevant testing capability, so as to objectively assess the testing performance and analyze and evaluate the comparison results. Where the above approaches are not feasible, verification may be carried out through personnel comparison, method comparison, data comparison with authoritative institutions, and other means. Personnel comparison requires no fewer than two trained and qualified personnel to test the same batch of samples in accordance with the same standard, to verify the reproducibility of results; this method is mostly applied to visual inspection items. Method comparison tests the same sample using a validated method and the method for the new project, and the consistency of results is used to determine whether the laboratory is competent to carry out the new test project. For data comparison with authoritative institutions, the deviation of test results can be compared against the root-sum-square of uncertainties to guarantee accurate and reliable results. Detailed records shall be kept throughout the verification process, and a verification report shall be prepared upon completion where necessary. The development of new test projects at inspection bodies is systematic and comprehensive. The five interlinked elements — personnel, environmental facilities and safety, equipment, documents and records, and result verification — are all indispensable. Adequate preparation for each element ensures smooth application for the new testing capability and successful assessment with high quality.

.gtr-container-x7k2m{font-family:Verdana,Helvetica,"Times New Roman",Arial,sans-serif;font-size:14px;color:#1a1a2e;line-height:1.6;text-align:left;padding:16px;box-sizing:border-box;} .gtr-container-x7k2m *{box-sizing:border-box;} .gtr-container-x7k2m p{margin:0 0 16px 0;text-align:left;line-height:1.6;font-size:14px;color:#1a1a2e;} .gtr-container-x7k2m .gtr-title{font-size:18px;font-weight:bold;color:#0000FF;margin:24px 0 12px 0;line-height:1.4;padding-left:12px;border-left:4px solid #0000FF;} .gtr-container-x7k2m .gtr-title:first-child{margin-top:0;} .gtr-container-x7k2m .gtr-lead{color:#2a2a3e;} .gtr-container-x7k2m .gtr-em{color:#0000FF;font-weight:bold;} .gtr-container-x7k2m ul,.gtr-container-x7k2m ol{list-style:none !important;margin:0 0 16px 0;padding:0;} .gtr-container-x7k2m li{position:relative;padding-left:20px;margin:0 0 10px 0;line-height:1.6;font-size:14px;color:#1a1a2e;} .gtr-container-x7k2m li::before{content:"•" !important;position:absolute !important;left:0 !important;color:#0000FF;font-weight:bold;} .gtr-container-x7k2m .gtr-list{margin:0 0 16px 0;padding:0;} .gtr-container-x7k2m .gtr-list li{padding-left:20px;} .gtr-container-x7k2m .gtr-list li::before{content:"•" !important;position:absolute !important;left:0 !important;color:#0000FF;font-weight:bold;} .gtr-container-x7k2m .gtr-table-wrap{overflow-x:auto;margin:0 0 16px 0;border-radius:8px;box-shadow:0 1px 4px rgba(0,0,255,0.08);} .gtr-container-x7k2m table{width:100%;border-collapse:collapse !important;border-spacing:0 !important;border:1px solid #c7c7f0 !important;font-size:14px;} .gtr-container-x7k2m th,.gtr-container-x7k2m td{border:1px solid #c7c7f0 !important;padding:10px 12px !important;text-align:left !important;vertical-align:top;line-height:1.6;word-break:normal;overflow-wrap:break-word;} .gtr-container-x7k2m th{background-color:#eef0ff !important;color:#0000FF !important;font-weight:bold !important;} .gtr-container-x7k2m td{color:#1a1a2e !important;} .gtr-container-x7k2m a{color:#0000FF;text-decoration:none;border-bottom:1px solid rgba(0,0,255,0.3);} .gtr-container-x7k2m a:hover{color:#0000cc;border-bottom-color:#0000cc;} .gtr-container-x7k2m blockquote{margin:0 0 16px 0;padding:12px 16px;border-left:4px solid #0000FF;background-color:#f5f6ff;border-radius:0 8px 8px 0;color:#2a2a3e;} .gtr-container-x7k2m blockquote p{margin:0;} .gtr-container-x7k2m img{max-width:none;} @media (min-width:768px){ .gtr-container-x7k2m{padding:32px;max-width:900px;margin:0 auto;} .gtr-container-x7k2m p{margin-bottom:18px;} .gtr-container-x7k2m .gtr-title{font-size:18px;margin:32px 0 16px 0;} .gtr-container-x7k2m li{margin-bottom:12px;} } Have you ever had this experience? You buy half a kilogram of apples at a wet market, weigh them on your scale at home, and find they are 25 grams short. You fill up 50 liters of gasoline at a gas station, always feeling the meter ticks faster than your wallet drains. Even on the same physical examination device, your blood pressure readings differ between morning and afternoon. Behind these seemingly “dishonest” or “inaccurate” incidents lies a deeper truth — metrological standards have never been, and can never be, absolutely uniform. Most common metrological disputes in daily life are not caused by merchants deliberately shortchanging customers, but by inherent “discrepancies” within the standards themselves. The Battle Between Kilograms and Jin at Wet Markets In April 2025, a dispute broke out in the ancient town of Dali, Yunnan. A tourist placed his 170-gram iPhone on a vendor’s scale, and the reading showed 0.34 kilograms. Seemingly accurate, yet the tourist felt cheated. Where was the problem? The answer lies in differing customary units of measurement. Many regions in Yunnan still retain the traditional use of jin (Chinese catty). The “one jin” mentioned by the vendor refers to 500 grams, while the scale displays values in kilograms. The same word “jin” means different weights to different people. No one is at fault here; it is a collision of historically inherited measurement habits in the same space. The metric system originated during the French Revolution, born out of the Enlightenment ideal of “unifying the world by natural laws”. More than two hundred years later, however, numerous countries and regions still retain traditional units of measurement to varying degrees: The United States is one of the few developed nations that still widely uses imperial units — miles, pounds and degrees Fahrenheit are deeply embedded in every aspect of social life. The US attempted metrication in the 1970s, but the effort fizzled out due to excessive costs and public resistance. In China, the legal measurement system is metric, yet traditional units such as jin, mu and cun remain widely used among the public. These differences are not signs of backwardness; they form part of cultural identity. When a unit of measurement carries the life memories of generations, replacing it involves far more than just swapping out a few scales. The story of metrological standards is, at its core, a story of “ideal versus reality”. Ideally, the whole world would adopt one set of units, one measuring stick and one standard, facilitating smooth trade and communication and aligning with scientific principles. In reality, history carries inertia, technology has limits, economic costs exist, and industries have unique characteristics. Combined, these factors determine that metrological standards can only achieve relative uniformity, never absolute consistency. With this understanding, we may view daily metrological puzzles with greater empathy. A few grams of deviation on a market scale does not always mean a dishonest vendor — it may simply be the inherent accuracy class of that scale. Inconsistent test results between two hospitals do not necessarily mean misdiagnosis; the traceability chains of their testing systems may differ. Crude oil is traded by the barrel internationally while domestic fuel is sold by the liter, not to create confusion intentionally, but as a result of historical path dependence. The imperfection of metrological standards mirrors the complexity of our world. What we can do is not demand absolute uniformity, but establish mutual recognition amid differences and seek consensus amid diversity — much like human civilization itself, integrating through collisions and advancing amid divergences.

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