Accurately Monitoring Gas and Smoke in Difficult Locations

by | Jun 5, 2019 | Analytical, Measurement Instrumentation

Jim Cahill

Jim Cahill

Chief Blogger, Social Marketing Leader

Gas and smoke aspirator systems monitor for smoke or gas ingress where installing detectors are not feasible. These aspirator systems work by having the sample being measured by a probe pulled in to the aspirator system under an adjustable vacuum created by an air-driven educator and then measured by the gas detector.

In this short 2:20 YouTube video, Gas & Smoke Aspirator System, Emerson’s Ryan Bowlds and Josh Hernandez describe how these systems work and applications where they fit.

The probes used in aspirator systems are designed for extreme environments. The system is separated from the probes taking in the samples and can be located in a place that is easy to view and maintain.

These systems are suitable for a wide range of applications including gas turbines, wastewater sewage dryers, printing plants, LNG & LPG tanker ships, floating production storage and offloading (FPSO) ballast tanks and turret moonpools, offshore oil & gas production riser caissons, and crude oil drilling areas & storage tanks—just to name a few. These applications are typically where temperatures are too extreme for field devices, particularly point infrared & electrochemical-based detectors.

The systems simple design pulls in the sample from the probe through a sample intake, runs it through the gas detector and sends out the sample through an exhaust outlet. The sampling system requires no power and has very few moving parts. The system can be calibrated while it remains inline.

Self-compensating duct probes uniformly draw gas to provide a representative sample to analyze. Josh highlighted the use of these systems in gas turbine applications. Even with the high heat in the ventilation exhaust ducts, the probes can operate reliably over time. Instead of sending personnel into these hazardous areas to periodically sample gas levels, the aspirator systems can continuously sample these areas.

The gas detectors performing the analysis can come from a range of suppliers including Emerson’s toxic and combustible gas detectors.

Visit the Flame and Gas Detection section on for more on the aspirator systems and detectors. You can also connect and interact with other analyzer experts in the Measurement Instrumentation group in the Emerson Exchange 365 community.

Popular Posts


Follow Us

We invite you to follow us on Facebook, LinkedIn, Twitter and YouTube to stay up to date on the latest news, events and innovations that will help you face and solve your toughest challenges.

Do you want to reuse or translate content?

Just post a link to the entry and send us a quick note so we can share your work. Thank you very much.

Our Global Community

Emerson Exchange 365

The opinions expressed here are the personal opinions of the authors. Content published here is not read or approved by Emerson before it is posted and does not necessarily represent the views and opinions of Emerson.

PHP Code Snippets Powered By :