Analytical Instrumentation & Environmental Monitoring


Pier transmission photometers

July 2009 Analytical Instrumentation & Environmental Monitoring

All of these desirable qualities are a function of the various PVB foils sandwiched between the glass layers giving these performance glasses their specific characteristics.

However, the essential requirements for these high performance glasses are still high transmittance, non-fading properties and optimal adhesion to the glass surface which determines the degree to which the integrity of a glass product is maintained in the event of a breakage. To ensure that these requirements are met, the determination of the film moisture content is critical as it determines the durability of the glass/PVB bond. Since the required value is less than 0,35% moisture content it presents challenges to conventional measurement techniques.

A moisture measurement technique which has proven itself over the years in this industry makes use of the Pier transmission photometers and the specific IR absorption spectrum characteristics of water. For this application, the absorption at near IR wavelengths (1930 nm) is directly proportional to the percentage moisture in the film. The film itself has an IR absorption spectrum of approximately 1750 nm, proportional to the film thickness. In order for the correct moisture content to be determined therefore, a correction factor has to be introduced to compensate for the thickness of the film.

These gauges thus measure both moisture content and film thickness in order for optimal quality control and to ensure that end user safety is not compromised and the optical clarity of the glass product is not impaired in any way. This translates into reduced numbers of rejects due to the formation of bubbles (too high moisture content) or the failure of the product to adhere to safety specifications (too low moisture content).



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Ensuring occupational health and safety in mining
Analytical Instrumentation & Environmental Monitoring
Probe Integrated Mining Technologies (Probe IMT) has partnered with M3SH Technology to offer state-of-the-art environmental monitoring solutions that address these dual requirements.

Read more...
Sustainability of surface water
Endress+Hauser South Africa Analytical Instrumentation & Environmental Monitoring
The sustainability of surface water is critical for South Africa’s economic development, social well-being and environmental health. Endress+Hauser has a full range of liquid analysis sensors and transmitters to measure important parameters and has an excellent global track record in water and wastewater process plants and various surface and industrial water monitoring sites.

Read more...
Keeping an eye on invisible radiation
Omniflex Remote Monitoring Specialists Analytical Instrumentation & Environmental Monitoring
At its peak in 1994, the energy generation capacity of the UK’s nuclear power stations was 12,7 GW across 16 plants. In 2024, the capacity has fallen to around 5 GW, and the number of stations is down to nine. However, this is far from the end of the story as spent nuclear fuel remains radioactive for centuries, and requires rigorous safety processes to safeguard against leaks.

Read more...
Effective dust control in sugar processing
Analytical Instrumentation & Environmental Monitoring
BLT WORLD specialists work in conjunction with the global ScrapeTec team to offer dependable solutions for specific problems at the transfer points of conveyor systems in many industries where dust and material spillage are concerns, including the sugar sector.

Read more...
A benchmark for lubricant reliability in mining
Analytical Instrumentation & Environmental Monitoring
According to Craig FitzGerald from ISO-Reliability Partners, mines can save R500 000 or more on their yearly mill cleaning costs, while electricity consumption can be reduced by up to 12%, and lubricant consumption lowered up by up to 60% when using Bel-Ray Clear Gear lubricant.

Read more...
Safeguarding precision in industrial radiometric measurements
Mecosa Analytical Instrumentation & Environmental Monitoring
In the complex landscape of industrial plant operations, precision is paramount, especially when it comes to weld inspections to test for structural integrity of pipes. Berthold has the ideal answer to this challenge – X-Ray Interference Protection.

Read more...
New indoor air quality monitor
RS South Africa Analytical Instrumentation & Environmental Monitoring
RS South Africa has available a new indoor air quality (IAQ) monitor that provides continuous, easy-to-read, and accurate real-time monitoring of air quality in indoor environments.

Read more...
A quick guide to disinfection
Endress+Hauser South Africa Analytical Instrumentation & Environmental Monitoring
The distribution system in a drinking water network provides a reliable supply of high-quality water to consumers. Endress+Hauser’s range of robust, low-maintenance sensors are ideal for monitoring disinfectant levels in the water.

Read more...
Multi-parameter measuring system for water quality monitoring
KROHNE Analytical Instrumentation & Environmental Monitoring
Monitoring different parameters in water treatment processes can lead to a situation where different measuring points are scattered across the plant.

Read more...
Optimising energy consumption in the chemical industry
Anton Paar Analytical Instrumentation & Environmental Monitoring
To optimise energy consumption and save valuable resources on chemical process plants, operators have to continuously measure parameters such as concentration, raw density, sound velocity and refractive index. With Anton Paar’s wide product range, the process application team has many options for cutting-edge laboratory measurement technologies, and can develop tailor-made mathematical models for every application.

Read more...