EC Sense - Easy Gas Sensors

  • Booth: 1616

Have been searching for the best in gas sensor technology?

 Show Specials

  • A gas sensing module for measurement of formaldehyde must be able to deliver reliable measurement in the sub-ppm range of gases. The reason is that even small exposures to formaldehyde can cause irritations and longer time exposure can cause life-threatening diseases to evolve. Formaldehyde is a gas that forms naturally or from almost all human related activities – from burning of fossil fuel to cleaning of carpets using chemicals. The formaldehyde is so-to-speak all around us and the concentrations can vary a lot dependent on human or natural activities.

    The ES1-HCHO + TB600B combination, which is sold as one unit, is a digital and very compact formaldehyde gas sensing module that can measure concentrations in the sub-ppm range. The TBB600B electronics deliver a 24-bit high-resolution signal enabling changes to be measured down to 10 ppb within a measurement range from 0-1 ppm (possible overload up to 2 ppm). The sensor signal output is very linear and the zero-gas stability is excellent. Because of the solid polymer electrolyte technology, the sensor is suited for both hand-held as well as stationary gas alarm systems.

 Press Releases

  • State-of-the-art electrochemical sensors and digital electronics

    Electrochemical (EC) gas sensor technology has reached a very mature state and EC sensors with a very high signal stability, low signal drift and long lifetime are considered state-of-the-art. The ES1 series, covering gases such as O2, HCHO (formaldehyde), CO, H2S, NO2 and VOCs, is not only the series of EC sensors with the smallest footprint, it is also the series with the best performance in terms of good manufacturing practice and smallest variations in the output values of the sensor. The sensors based on the ES1 platform are printed on ceramic substrates and the electrolyte is embedded in a solid polymer. It is obvious that these sensors are best candidates for future “full-digital gas sensors” for industrial and air-quality applications. By using the new TB600 16/24-bit digital signal conversion board, Pewatron is one step closer to realizing the perfect digital gas sensor. The combination ES1-TB600 ensures very high resolution output, which is very important for very many applications in the industrial segment and in the measurement of air-quality.

    In this newsletter, we present 3 ES1-TB600 combinations for various applications. The combination ES1-O2 + TB600 enables signal resolution measured in a few ppm’s – over the full range of oxygen concentration between 0 and 25 %Vol O2 (250.000 ppmO2). The combination ES1-AG + TB600 is a true all-round air-quality sensor capable of measuring the total VOC content of a gas in combination with other gases such as CO, NO2, H2S and so on. Formaldehyde (HCHO) is a gas that not only needs to be measured, but also controlled for reasons of health and well-being. The concentration level for measurement is in the ppb-range and the combination ES1-HCHO + TB600 enables measurement of formaldehyde gas in the ppb-range.

    The TB600 electronics has UART serial digital output (3.3 V level). The serial communication have features for control and read-out of the gas concentration. Read-out of the gas concentration is every 1 second. The TB600 electronics measures only 30 x 20 mm and the height (including the ES1 gas sensor) is < 11 mm. The compactness of the module enable integration of the module directly into an application or limit the space requirements for build-in into an application. The TB600 electronics can also be delivered in either metallic or plastic enclosures for easy integration into existing electronic mounting racks.


  • ES1-O2: Digital, high-resolution oxygen gas sensor
    ES1-O2 + TB600: Digital, high-resolution oxygen gas sensing module
    New opportunities opening up in oxygen control applications

  • Oxygen controlled atmosphere (CA) applications in some cases rely on a long, stable operational lifetime of the oxygen sensing module and in some cases on a sufficiently high signal resolution in a wide range of oxygen concentrations. The ES1-O2 amperometric electrochemical sensor combines both – stable long lifetimes >> 3 years and high signal resolution < 10 ppm over the full range from 0 to 25 %Vol O2 are generally guaranteed.

    The ES1-O2 + TB600 combination is a digital and very compact oxygen gas sensing module that deliver a 16-bit serial output low-noise signal. The module delivers a signal output every 1 second. Because of the high resolution and the excellent zero-signal stability, CA applications with requirements for stable oxygen measurements down to 100 ppm can be served using this combination. In many cases the ES1-O2 + TB600 can be mounted directly in the gas stream or in the processing chamber, because of the size and because of the low power consumption.

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