Gas Detection

  • Patented Fence Electrode Eliminates Humidity Effects on ION Science PIDs

Patented Fence Electrode Eliminates Humidity Effects on ION Science PIDs

Mar 13 2019 Read 579 Times

A major limitation to the use of PIDs was their susceptibility to ambient humidity

Most PIDs suffer from low readings when humidity is high, due to quenching by water vapor, or drifting high readings at high RH, can also occur when the sensor becomes contaminated.

This drifting rise in readings is particularly prominent when doing soil headspace measurements, or in high humid environments, where an instrument calibrated in an air-conditioned building is brought outside into humid air often approaching 100% RH.

Compensating for humidity effects is never as accurate as having a sensor that is inherently unaffected by humidity.

ION Science has solved this issue with a combination of a fence electrode and an anti-contamination system design, whereby the sensor is protected by diffusion of the gas through a filter.

This feature makes ION Science PIDs especially useful for such applications as soil headspace analysis during environmental clean-ups, where the samples are both highly humid and prone to dirt and dust contamination, which create severe problems for other PIDs.

The ION Science Tiger handheld VOC detector is a revolutionary handheld gas detection instrument for the rapid, accurate detection of volatile organic compounds (VOCs) within the harshest of environments.

Tiger incorporates the ION Science patented photoionisation detection (PID) sensor technology with humidity resistance and anti-contamination design, proven to dramatically extend run time in the field.

Tiger provides a dynamic detection range of 0 to 20,000 parts per million (ppm) with a minimum sensitivity of 0.001ppm (1 ppb), offering the widest measurement range of any other VOC detector on the market.

This handheld VOC detector has the fastest response time on the market of just two seconds and is just as quick to clear down. The instrument can be connected directly to a PC via the USB offering extremely fast data download capabilities.

Visit our website to find out more.

Reader comments

Do you like or dislike what you have read? Why not post a comment to tell others / the manufacturer and our Editor what you think. To leave comments please complete the form below. Providing the content is approved, your comment will be on screen in less than 24 hours. Leaving comments on product information and articles can assist with future editorial and article content. Post questions, thoughts or simply whether you like the content.

Post a Comment




Digital Edition

Asian Environmental Technology May 2019

May 2019

In This Editon Business News - Measuring the methane component of GHG emissions - Blackline Safety reports strongest quarter ever with revenue up 64% - Restek and LECO collaborate in worldw...

View all digital editions

Events

PEFTEC 2019

May 22 2019 Rotterdam, Netherlands

SETAC Europe

May 26 2019 Helsinki, Finland

Caspian Power

May 29 2019 Baku, Azerbaijan

ASMS Conference

Jun 02 2019 Atlanta, GA, USA

Aquatech China 2019

Jun 03 2019 Shanghai, China

View all events