Zellweger Analytics - Astro, Polymetron Divisions
- Environmental and Industrial Laboratory Analysis
- Fire and Gas Detection
- Fixed and Portable Gas Monitoring
- Indoor Air Quality Measurement
- On-Line Water and Liquid Analysis
- Process Toxic Gas Analysis
With five manufacturing centers in France, the UK and USA, together with an experienced network of specially trained agents and distributors in over 60 countries, Zellweger Analytics is truly international in structure, and in an understanding of customers' requirements. The Zellweger Analytics mission is to provide 'Total Environmental Solutions' , this market-driven philosophy influences the way we design, manufacture and supply our products and services to guarantee customer satisfaction through world class quality and value. As part of the Zellweger Luwa Group we have set the following goals:
- to offer products and services based on state-of-the-art technology
- to assume a leading position in, and be the preferred supplier to our markets
- to be an attractive and supportive employer
- to be a competent, fair and reliable partner to customers, suppliers and business partners
- and to ensure a sustained and above average share-holder value
About Astro
Astro, founded in 1970, has a history of developmental and production firsts: first in continuous TOC measurement; first in UV-persulfate technology; first in non-catalytic, high-temperature combustion TOC; and first in continuous, low temperature, ultraviolet-promoted TOC. Acquired by Zellweger Analytics in 1994, Astro developed water quality measurement technology for the International Space Station and continues to be a leader in TOC measurement innovation today.
Total Organic Carbon (TOC) is a key parameter in determining the quality of drinking water, as well as water used in food processing, power generation, pharmaceutical production and semiconductor manufacturing. In the chemical and petrochemical industry, TOC measurement has been widely used to assess the hydrocarbon content of waste and process water, providing an indication of potential pollution problems, and permitting accurate allocation of production costs.
About Polymetron
The Polymetron company was created in 1946 in Switzerland, to design and market industrial pH and conductivity meters. Zellweger Uster AG acquired Polymetron in 1967 and the first continuous industrial titrators were sold for application in the textile industry (bleach/dye/caustic) and the car industry's phosphatizing baths (Mercedes & Ford). Those titrators were developed in line with the Polymetron objective of producing "Chemical analyzers for 'non chemist' users". The first microprocessor based industrial transmitters were introduced to the market in 1980. Headquarters, as well as the production unit, moved to France in 1990. Polymetron offer a wide range of industrial instruments dedicated to on-line water analysis:
- On-line Water Analyzers
- pH/ORP Measurement Instruments
- Conductivity Measurement Instruments
- Suspended Solids and Turbidity Transmitters/Sensors
- Solids Level Monitors
Polymetron (U.S.) history
The U.S. branch of Polymetron has a colorful history that dates back to 1921, with the invention of the first continuously operating in-line consistency transmitter. Over the years, the company has undergone a number of name and identity changes: GST Regeltechnik, Eur-Control, BTG Process Control Sensors, BTG Polymetron and finally Polymetron. The company joined Zellweger Analytics in 1996, where it has become part of the world's largest product line dedicated to water quality measurement. The U.S. branch specializes in suspended solids and blanket level monitoring, a field it virtually invented with the development of the patented 4-Beam™ Alternating Light Principle in 1974. This principle allows an optical sensor to continue to measure even though its measuring windows are dirty, and compensates for inherent variations in optical emitters and detectors. This paved the way for continuous, low-maintenance measurement of suspended solids concentration in municipal wastewater and other challenging environments. Copied by all major manufacturers of suspended solids and turbidity instruments, the 4-Beam™ principle is the standard technique for this measurement. This triumph was followed by breakthroughs in continuous, direct blanket level monitoring and profiling, self-cleaning in-line turbidity measurement, and multi-channel suspended solids transmitters.
In over 40 countries worldwide Polymetron provides solutions for the Power Generation, Water Treatment , Pharmaceuticals, Chemicals, Semiconductor, Food/Beverage and Paper industries.