Signal Group

  SIGNAL Instruments USA

Microprocessor Control

Advanced Gas Analyzers

2-Year Warranty

Applications Gases Technologies

Signal Group is a leading manufacturer of gas analyzers, systems and accessories for monitoring emissions to air. Products include fixed and portable CEMS, Air Quality Monitoring systems and automotive exhaust emissions systems. The Instruments Division is focused on combustion emissions, automotive applications and VOC measurement. The Ambitech Division has expertise in Gas Turbine Power Station emissions and ambient Air Quality Monitoring.

gas analyzers


Gas Analyzers

Monitors measuring carbon dioxide (CO2), carbon monoxide (CO), Freon R-22, hydrogen chloride (HCl), methane (CH4), nitric oxide (NO), nitrogen dioxide (NO2), nitrous oxide (N2O), non-methane hydrocarbons (NMHC), oxides of nitrogen (NOx), oxygen (O2), sulfur dioxide (SO2), total hydrocarbons (THC), volatile organic compounds (VOCs), and many other gases are available.
Advanced technology Series 4 gas analyzers can be found here.
The complete line of legacy Series III gas analyzers can be found here.

Portable Volatile Organic Compounds (VOCs) Analyzer

Signal has been manufacturing the industry standard portable Flame Ionization Analyzer (FIA) for stack testers, the 3010 MiniFID, for 2 decades. Signal updated the design in 2013 to offer new features such as a catalytic air purifier for low range applications and an on-board data-logging system for extra convenience on site.

Continuous Emissions Monitoring Systems (CEMS)

Signal offers a range of US-EPA-compliant and MCERTS-certified equipment to comply with the requirements of QAL1 and can offer software solutions and maintenance support to operators for QAL3.

SIGNAL GROUP Continuous Emissions Monitoring Brochure


Signal has extensive experience in providing and installing complete bespoke emissions systems for Euro 5&6 test applications - from analyzers through to complete measurement systems.


Service and Support
Correctly maintained, your Signal equipment would be expected to have an operational life of at least 10 years. In fact, instruments are often returned for routine services that are over 30 years old! A contract of preventative work provided by Signalís trained engineers is recommended to ensure that your equipment is operating at optimum performance at all times. Please contact us for further details on our cost-effective packages.

355 North York Rd.
Willow Grove, PA 19090
Tel: 215.830.8882
Fax: 215.830.8922
Toll free: 866.SIGNAL.U
Hours of operation:
M-F 8AM to 6PM Eastern Time
weekends and 24-hour emergency service by agreement
© 1996-2015 SIGNAL USA. All rights reserved.

continuous emission monitoring system design, manufacture, applications engineering, supplies and service