6.4. Selecting the Optimum Sample Size

Each particular sample will have its own optimum sample size. Best results will be obtained if the sample consists of a single layer of particles, as long as this is sufficient to develop a weight loss of 10 milligrams or more. A rule of thumb is "the lower the moisture, the larger the sample." Low-moisture samples, less than 0.10%, such as chemicals or plastics, require larger amounts; the instrument is optimized to run low moisture samples with a 30g load. The larger sample size is necessary to provide sufficient weight-loss information to the microprocessor. A larger weight change between the initial and final sample weights will give more accurate, repeatable results. A smaller sample size will give faster tests. Generally, it is best to use a thin layer that just covers the surface of the pan. Very light, or very expensive, test materials may necessitate weighing as little as 150 milligrams. Be aware that the standard error will be larger for samples this small, unless the moisture content is sufficient to cause a weight change of 10 milligrams or more for each test. If the first result is too low, increase sample size or raise the temperature. If it is too high, decrease sample size, or lower the temperature.

The sample should be added evenly, in a thin layer, across the entire surface of the pan. Once the desired amount has been added, the pan can be removed from the test chamber to evenly distribute the sample. The sample should be distributed over the surface by gentle shaking, tapping, or for very viscous samples, spread with a spoon or knife. Do not spread granular products with a spoon as the particles compress even under gentle pressure affecting test times and results. An even layer of sample across the pan will reduce test times and increase precision of results.

7. PERFORMANCE ENHANCEMENT

7.1. Introduction

Please note: The information presented here is general in nature.

The Computrac MAX Series loss-on-drying moisture analysis system takes advantage of computer technology to reduce test times and increase precision over standard vacuum oven or convection oven drying procedures. The sample is added to an aluminum sample pan sitting atop an electronic force balance within a test chamber. As the sample heats and loses weight due to moisture evaporation, the balance records that weight loss and transmits the data to the microprocessor. The microprocessor interprets the information and compares the sample's weight loss to a standard drying curve. The final moisture concentration is extrapolated from the curve and results are available within minutes.

AZI Customer Service 800-528-7411 or 602-470-1414

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Arizona MAX-5000XL user manual Performance Enhancement, Selecting the Optimum Sample Size, Introduction
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MAX-5000XL specifications

The Arizona MAX-5000XL is a premier flatbed printer designed for high-volume printing applications, renowned for its versatility and cutting-edge technology. This remarkable machine is part of the Arizona series from Océ, a brand recognized for its innovation in digital printing solutions. The MAX-5000XL is specifically engineered to deliver high-quality graphics across various substrates, making it a favorite among businesses in signage, graphics, and packaging industries.

One of the standout features of the MAX-5000XL is its expansive printing capacity. With a maximum bed size of 126 x 98 inches, it can accommodate large sheets, enabling the production of oversized prints without the need for cumbersome tiling or trimming. This feature not only saves time but also enhances operational efficiency, allowing businesses to streamline their workflow.

The MAX-5000XL employs advanced UV printing technology, which uses ultraviolet light to cure the ink instantly as it is printed. This results in vibrant colors, sharp details, and improved durability, making prints resistant to scratches, chemicals, and UV exposure. The printer’s ink system features highly pigmented inks that produce stunning images, offering a wide color gamut that is perfect for demanding graphical applications.

Moreover, the printer is equipped with a sophisticated high-resolution imaging system that delivers outstanding print quality at resolutions up to 1440 dpi. This level of detail ensures that even the finest elements of a design are replicated with precision. The machine also incorporates a variable dot technology that optimizes ink droplet size based on the image content, further enhancing the overall image quality.

Another notable characteristic of the Arizona MAX-5000XL is its user-friendly interface. The printer features intuitive software that simplifies setup, operation, and maintenance, enabling operators to focus more on production rather than troubleshooting. The machine also supports automated printing features, reducing manual intervention and helping to improve turnaround times.

In addition, the MAX-5000XL is designed with sustainability in mind. Its low-energy LED UV curing technology not only reduces energy consumption but also minimizes the environmental impact of the printing process. The ability to print on a wide range of substrates, including rigid and flexible materials, also expands the creative possibilities for designers while offering greater options for businesses looking to cater to diverse markets.

In summary, the Arizona MAX-5000XL is a state-of-the-art flatbed printer that combines large-format capabilities, exceptional print quality, and advanced technology. Its user-friendly features and emphasis on sustainability make it an ideal choice for businesses seeking to elevate their printing operations to new heights.
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