Volumetric Handheld

test measures

for small calibrations

Introducing Lonetti's Handheld Test Measures

 Experience the power of precision in the palm of your hand. These portable instruments deliver accurate and reliable measurements on the go, empowering you to confidently collect data and make informed decisions. With user-friendly interfaces and versatile applications, Lonetti’s handheld test measures are the perfect solution for precise measurement needs in various industries.

Precision Perfected

Handheld Test Measures Redefine Portable Measurement Excellence

Portability and Convenience

Lonetti's handheld test measures offer unparalleled portability, allowing users to easily carry and operate them in various locations. This convenience enables on-the-spot measurements and effortless mobility between different testing sites.

Precise Measurements on the Go

With precision as a top priority, Lonetti's handheld test measures deliver accurate and reliable measurement results in real-time. They are designed to provide precise readings, ensuring confidence in data collection for critical applications.

Versatile Applications

Lonetti's handheld test measures cater to a wide range of industries and measurement needs. From liquid volume measurement to flow rate monitoring, these instruments offer versatility and adaptability to various testing requirements.

User-Friendly Interface

Lonetti's handheld test measures are equipped with user-friendly interfaces, making them intuitive and easy to operate. The clear display, ergonomic design, and simple controls contribute to a seamless user experience, enhancing efficiency and productivity.

Customization for Specific Needs

Lonetti offers customizable Prover Tanks, allowing customers to tailor the tank's design, size, and features to suit their specific requirements. This customization ensures optimal performance and seamless integration into existing systems.

Durable and Resilient

Built with high-quality materials and rugged construction, Lonetti's handheld test measures are designed to withstand demanding environments. They are engineered to endure harsh conditions, ensuring long-lasting performance and durability.

Calibration Accuracy and Traceability

Lonetti ensures that their handheld test measures meet strict calibration standards, offering accurate and traceable measurements. This commitment to calibration accuracy ensures reliable data for critical decision-making and regulatory compliance.

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Technical information

At our facility, we offer comprehensive calibration services adhering to rigorous standards. When calibrating a standard capacity measure, our process ensures that the expanded uncertainty in calibration remains well within the stringent benchmarks set forth. Specifically, we ensure that the expanded uncertainty is limited to no more than one-fifth of the maximum permissible error established during pattern approval tests, and one-third of the maximum permissible error during verification tests.

Our meticulous approach to uncertainty estimation aligns with the acclaimed “Guide to the Expression of Uncertainty in Measurement,” employing a factor of k = 2 for heightened precision. This comprehensive approach encompasses the intricacies of uncertainty stemming from measurement standards, calibration operations, and the capacity measure itself.

Upon calibration completion, you can trust that the recorded expanded uncertainty will be clearly documented in the calibration certificate, ensuring transparency and adherence to the highest standards of precision and accuracy.

When it comes to standard flasks, we strictly adhere to the international specifications, ensuring that the maximum permissible errors align with the prescribed values.

For standard test measures and proving tanks, our calibration process meticulously maintains precision. We ensure that the maximum permissible errors remain within the remarkably stringent threshold of ± 1/2 000 of the nominal capacity, setting a high standard for accuracy.

Furthermore, this meticulous attention extends to the scale intervals inscribed on both sides of the scale mark, corresponding to the nominal capacity of a standard test measure or proving tank. Our commitment ensures that every scale mark within the range from “nominal capacity – x” (the minimum value below nominal capacity) to “nominal capacity + y” (the maximum value above nominal capacity) is meticulously calibrated to fall within the maximum permissible error that pertains to the nominal capacity.

At our facility, precision isn’t just a goal; it’s an unwavering commitment that spans every facet of our calibration process.

Upon calibration completion, you can trust that the recorded expanded uncertainty will be clearly documented in the calibration certificate, ensuring transparency and adherence to the highest standards of precision and accuracy.

The diameter of the neck of the standard test measure shall be large enough to avoid
problems with regard to the trapping of liquid or air or vapor or to the cleaning of the
measure, and small enough so that the sensitivity in detecting changes in the level in
the measure is sufficient for achieving the measurement accuracy required. It is
assumed that the requirement will be met if a difference of at least 3 mm in the liquid
level in the neck is equivalent to the absolute value of the maximum permissible error
of the standard capacity measure.
The neck part shall be of the weir-type, or have glass plates, or be made of glass
tube, or have a separate and fixed gauge glass(es). The scale marks corresponding to
the nominal capacity and to at least 1 % of the nominal capacity, in plus and in minus,
shall be marked on the glass plates, the glass tube neck or the gauge glass. Otherwise,
the neck part shall be fitted with a fixed, rustproof metal plate or a sliding plate capable of being sealed, and on which the scale marks corresponding to its nominal capacity, and to the volumes below and above the nominal capacity, are marked. The scale
marks on the metal plate fixed to the neck part, shall be inscribed on both edges of the
plate, adjacent to the window.
The diameter of the gauge glass shall be large enough to ensure that capillary or
meniscus effects do not introduce additional uncertainties such that the maximum
permissible errors .
If adjustment plungers are used, they shall not move easily after adjustment of the
volume and shall be capable of being sealed.
It shall be ensured that the liquids are easily delivered to and from standard test
measures, and that no pockets, dents or crevices capable of trapping the liquid or air
or vapor are present.

For standard test measures and proving tanks, our calibration process meticulously maintains precision. We ensure that the maximum permissible errors remain within the remarkably stringent threshold of ± 1/2 000 of the nominal capacity, setting a high standard for accuracy.

Furthermore, this meticulous attention extends to the scale intervals inscribed on both sides of the scale mark, corresponding to the nominal capacity of a standard test measure or proving tank. Our commitment ensures that every scale mark within the range from “nominal capacity – x” (the minimum value below nominal capacity) to “nominal capacity + y” (the maximum value above nominal capacity) is meticulously calibrated to fall within the maximum permissible error that pertains to the nominal capacity.

At our facility, precision isn’t just a goal; it’s an unwavering commitment that spans every facet of our calibration process.

Upon calibration completion, you can trust that the recorded expanded uncertainty will be clearly documented in the calibration certificate, ensuring transparency and adherence to the highest standards of precision and accuracy.

Proving tanks shall be provided with drain valves at the bottom part; they should
be designed with a top neck and may be designed with a bottom neck. The requirements on the diameter of the neck of standard test measures apply equally to the diameter of the top and bottom necks of proving tanks.
The top neck should be provided with glass plates or a separately fixed gauge
glass(es), on which the scale marks corresponding to the nominal capacity and to variations of at least 1 % of the nominal capacity, in plus and in minus, are marked. Otherwise, the top neck part shall be fitted with a fixed and rustproof metal plate or a
sliding plate capable of being sealed and on which the scale marks corresponding to its
nominal capacity and to the volumes below and above the nominal capacity, are marked.
The bottom neck should be provided with glass plates or a separately fixed gauge
glass(es) similar to the top neck, with scale marks corresponding to volumes of only
0.5 % in plus or in minus of the nominal capacity.
The diameter of the gauge glasses connected to the top and bottom necks shall be
large enough to ensure that capillary or meniscus effects do not introduce additional uncertainties such that the maximum permissible errors are exceeded. It shall be ensured that the liquids are easily delivered to and from the proving tanks and that no pockets, dents or crevices capable of trapping the liquid, air or vapor are present. 

Reference temperature
The value of the reference temperature of the standard capacity measure specified
in national regulations shall be stated in the calibration report and/or on the measure
itself. 

Liquids used for calibration
1)  For Standard flasks and standard test measures
The liquid used for the calibration of standard flasks and standard test measures
shall be water 

2)  For Proving tanks
The liquid used for the calibration of proving tanks shall be water which shall be
clean and free of contaminants or corrosive chemicals and which shall contain no air
or gas bubbles.

Measures constructed “to contain” and “to deliver” The method of calibration should correspond to the manner in which the measure is to be used; e.g. a measure constructed “to deliver” shall be calibrated by determining the volume of the water it discharges, with a specific drainage time, while a measure constructed “to contain” shall be calibrated by determining the volume of the water which is required to fill the dry or pre-wetted measure, as applicable.

 

 

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