{"id":776,"date":"2026-06-29T15:44:22","date_gmt":"2026-06-29T15:44:22","guid":{"rendered":"https:\/\/uvstry.com\/?p=776"},"modified":"2026-06-29T16:46:04","modified_gmt":"2026-06-29T16:46:04","slug":"%e7%be%8e%e5%9b%bdeit-power-puck-ii%e6%b5%8b%e8%af%95%e5%8e%9f%e7%90%86%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f%e8%ae%be%e8%ae%a1%e5%8e%9f%e7%90%86%e5%8f%88%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f","status":"publish","type":"post","link":"https:\/\/uvstry.com\/en\/%e7%be%8e%e5%9b%bdeit-power-puck-ii%e6%b5%8b%e8%af%95%e5%8e%9f%e7%90%86%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f%e8%ae%be%e8%ae%a1%e5%8e%9f%e7%90%86%e5%8f%88%e6%98%af%e4%bb%80%e4%b9%88%ef%bc%9f\/","title":{"rendered":"What is the testing principle behind the US-made EIT POWER PUCK II? What is its design principle?"},"content":{"rendered":"

What is the testing principle behind the US-made EIT POWER PUCK II? What is its design principle?<\/p>\n

\"\u5fae\u4fe1\u56fe\u7247_20250830092644.png\"<\/p>\n

I. Test Principle: How does it measure?<\/p>\n

The Power Puck II\u2019s testing principle is based on photoelectric detection and spectral filtering technology, with the primary objective of measuring the energy of ultraviolet radiation reaching the sensor\u2019s surface.<\/p>\n

The workflow can be broken down into the following steps:<\/p>\n

1. Photon capture:<\/p>\n

When ultraviolet light strikes the quartz window on top of the Power Puck II, photons enter the instrument.<\/p>\n

2. Spectral filtering:<\/p>\n

The light passes through a set of precision-engineered optical filters. These filters are one of the core components; they allow only light within a specific wavelength range to pass through, whilst blocking other unwanted light (such as visible light and infrared radiation).<\/p>\n

The Power Puck II has four independent measurement channels, each equipped with a filter specifically designed for a different UV wavelength band.<\/p>\n

3. Photoelectric conversion:<\/p>\n

\u201cPure\u201d ultraviolet light, filtered through a filter, is directed onto the photodiode.<\/p>\n

A photodiode is a semiconductor device characterised by the fact that, when exposed to light, it generates a photocurrent that is proportional to the intensity of the light. The stronger the light, the greater the current generated.<\/p>\n

4. Signal processing and integration:<\/p>\n

The minute photocurrent generated is fed into a highly precise operational amplifier circuit, which converts the current signal into a measurable voltage signal.<\/p>\n

A microprocessor inside the instrument monitors this voltage signal in real time (which represents irradiance, measured in W\/cm\u00b2).<\/p>\n

The most crucial step is integration: the microprocessor calculates the integral of the irradiance as a function of time. Put simply, this involves calculating the area under the irradiance curve.<\/p>\n

Energy density = average irradiance \u00d7 time; or, more precisely, energy density = \u222b Irradiance(t) dt.<\/p>\n

Ultimately, this value is the result it reports\u2014energy density, measured in mJ\/cm\u00b2.<\/p>\n

5. Data processing and storage:<\/p>\n

The calculated real-time irradiance (W\/cm\u00b2) and cumulative energy density (mJ\/cm\u00b2) will be displayed on the screen.<\/p>\n

The instrument can store multiple sets of measurement data for subsequent analysis and export by the user.<\/p>\n

\"\u5fae\u4fe1\u56fe\u7247_20250830092649.png\"<\/p>\n

II. Design Principles: Why was it designed this way?<\/p>\n

1. Principles of multi-channel design:<\/p>\n

Objective: To address the challenge posed by the fact that \u201cdifferent curing materials are sensitive to different wavelengths\u201d.<\/p>\n

Explanation: Not all UV-curable inks, coatings or adhesives are sensitive to light of the same wavelength. Their \u201cphotoinitiators\u201d have different absorption peaks. Therefore, it is not sufficient to know only the \u201ctotal UV energy\u201d; one must also know how that energy is distributed across different wavelength bands.<\/p>\n

Implementation: The Power Puck II is designed with four fixed-band channels:<\/p>\n

UVA (320\u2013390 nm): This is the most common wavelength range, to which most free-radical-curing materials are sensitive.<\/p>\n

UVV (395\u2013445 nm): Also known as \u201cvisible ultraviolet\u201d, this is essential for cationic curing materials and certain thick-film curing applications. This channel has been specifically optimised for measuring LED lamps (395 nm, 405 nm).<\/p>\n

UVB (280\u2013320 nm): Used in certain specialised curing applications; it affects surface curing.<\/p>\n

UVC (250\u2013260 nm): Primarily targets the 254 nm spectral line of mercury lamps; it is commonly used for surface cleaning and disinfection, and is also important in certain curing processes.<\/p>\n

This design enables users to gain a comprehensive understanding of whether the spectral output of the light source matches the sensitive wavelength bands of the materials being used.<\/p>\n

 <\/p>\n

2. Design principles behind the \u201cPuck\u201d shape:<\/p>\n

Purpose: To simulate the actual light exposure conditions of the cured product. This is the most ingenious aspect of its design.<\/p>\n

Explanation: The light emitted by an ultraviolet lamp is not parallel, but rather scattered light at various angles. A simple planar sensor is unable to capture light from all angles, resulting in lower readings.<\/p>\n

Implementation: The Power Puck II\u2019s hemispherical (dome-shaped) quartz window and cosine-corrected design enable it to collect light from all angles within a 180-degree field of view. This ensures that its measurements accurately reflect the total UV energy received by the surface of a three-dimensional object, rather than merely the direct light falling directly from above. This is crucial for ensuring the curing quality of workpieces with complex shapes.<\/p>\n

3. Design principles for high precision and durability:<\/p>\n

Objective: To provide reliable, repeatable, industrial-grade measurement data.<\/p>\n

Explanation: In a production environment, instruments must be robust and durable, and the data they provide must be accurate and consistent in order to be used for process control and quality management.<\/p>\n

 <\/p>\n

Implementation:<\/p>\n

a. Quartz window: Heat-resistant and highly transparent to ultraviolet light, preventing ageing and yellowing after prolonged use that could affect accuracy.<\/p>\n

b) Precision optical components and circuits: to ensure the stability and accuracy of measurements.<\/p>\n

c) Robust housing: designed to withstand impacts and high temperatures that may occur on the production line.<\/p>\n

d, NIST traceability: The instrument\u2019s calibration is traceable to the National Institute of Standards and Technology (NIST), ensuring the authority and comparability of the measurement results.<\/p>\n

4. Principles of user-friendly design:<\/p>\n

Purpose: To enable technical staff to use it quickly and conveniently.<\/p>\n

Features: Large-screen display of data from all four channels, one-touch operation, data storage functionality, and easy data export via USB, amongst others.<\/p>\n

Summary and Comparison<\/strong><\/h3>\n

 <\/p>\n

\n\n\n\n\n\n\n\n
Features<\/strong><\/td>\nTesting Principles (How it works)<\/strong><\/td>\nDesign Principles (Why it is designed that way)<\/strong><\/td>\n<\/tr>\n
Core<\/strong><\/td>\nPhotoelectric Conversion and Integration<\/td>\nSolving practical measurement challenges in industrial applications<\/td>\n<\/tr>\n
Multi-channel<\/strong><\/td>\nSeparating light of different wavelengths using optical filters<\/td>\nTo meet the sensitivity requirements of different materials at specific wavelengths<\/td>\n<\/tr>\n
Appearance<\/strong><\/td>\nThe hemispherical window collects light<\/td>\nCosine correction<\/strong>, simulating the energy actually absorbed by a three-dimensional workpiece<\/td>\n<\/tr>\n
Structure<\/strong><\/td>\nUsing quartz, photodiodes and microprocessors<\/td>\nEnsure that, in harsh industrial environments,Accuracy, durability and reliability<\/strong><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

 <\/p>\n

In short, the Power Puck II is not merely a simple \u201cUV energy meter\u201d; it has been designed based on a deep understanding of industrial applications.Precision analytical instruments<\/strong>. Whilst the testing principles are based on physics, it is the design principles that are the real reason why it has become the industry gold standard.<\/p>\n

To make a purchase, please contact us through official channels: Ms Liu at Shenzhen Deshengxing Electronic Technology Co., Ltd. on 18928278160.<\/strong><\/p>","protected":false},"excerpt":{"rendered":"

The Power Puck II\u2019s testing principle is based on photoelectric detection and spectral filtering technology, with the primary objective of measuring the energy of ultraviolet radiation reaching the sensor\u2019s surface.<\/p>\n

The workflow can be broken down into the following steps:<\/p>","protected":false},"author":1,"featured_media":777,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-776","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"\n\u7f8e\u56fdEIT POWER PUCK II\u6d4b\u8bd5\u539f\u7406\u662f\u4ec0\u4e48\uff1f\u8bbe\u8ba1\u539f\u7406\u53c8\u662f\u4ec0\u4e48\uff1f - \u6df1\u5733\u5e02\u5fb7\u80dc\u5174\u7535\u5b50\u6709\u9650\u516c\u53f8-UV\u673a-UV\u89e3\u80f6\u673a|\u6676\u5706\u8d34\u819c\u673a|\u6676\u5706\u6269\u819c\u673a|\u6676\u5706\u6495\u819c\u673a|UVLED\u56fa\u5316\u673a<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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