ATI A14/A11 Modular Gas Detector
Features
- LED display indicates gas concentration directly in PPM, PPB, or %
- An isolated 4-20 mA output will drive loads up to 1000 ohms for use in recording, data logging, etc.
- Two alarm setpoints may be set to any value from 5% to 100% of range
- Expedited repair and warranty service
- Lifetime technical support
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GasSens detection systems consist of individual modules that can be located where required. Sensor/transmitters, located in the area where gas leakage or buildup might occur, provide the basic measurement for the system. Sensor transmitters are available in either NEMA 4X or explosion-proof versions and can be supplied with ATI's exclusive Auto-Test automatic sensor testing system, greatly reducing operator testing requirements.
Receiver modules provide the electronic brains for the detection and alarm system. Each compact module includes a digital display of gas concentration, isolated analog output, and 4 relay outputs. Receivers may be located up to 1000 feet from sensor/transmitters for remote indication, or can provide local control functions such as valve shutoff while transmitting a 4-20 mA signal to remote displays or data loggers.
Universal power supply modules provide DC power to receivers. The power supply is housed in a compact module similar to the receiver, and will accept inputs from 85 to 265 volts, AC or DC, without adjustment. The power supply also provides a power failure relay and charging for an optional battery back-up unit.
In The News
Collaborative Southeast Nexus study examines region's air quality
While much of the world has experienced a warmer climate in recent years, the U.S. Southeast has cooled. Scientists want to know why because the answer could reveal keys to improving air quality and understanding climate change. 
 To study the cooling Southeast, scientists at several institutions have joined forces to conduct the Southern Atmosphere Study (SAS), the largest study on southeastern U.S. air quality since the 1990s. These include the U.S. Environmental Protection Agency, National Center for Atmospheric Research, National Science Foundation, National Oceanic and Atmospheric Administration and the Electric Power Research Institute. 
 Five air quality studies fall under the SAS umbrella.
Read MoreNew air monitoring system gains EPA support
A research and development firm in Massachusetts has developed air quality monitoring equipment capable of detecting more compounds at lower levels than current commercial systems. 
 
OPTRA, Inc., of Topsfield, was recently awarded a Small Business Innovation and Research (SBIR) program grant from the U.S. Environmental Protection Agency for its air monitoring efforts. The company has been working on the new system for over a decade. 
 
“Trace levels are concerning if it’s a particularly toxic compound such as a chemical agent or one with very low vapor pressure, such as many explosives,” said Julia Rentz Dupuis, chief technology officer at OPTRA.
Read MoreHydrogen Sulfide Monitoring - US Army Corps of Engineers
Project Overview 
NexSens field engineers installed hydrogen sulfide monitoring systems with real-time radio telemetry at several reservoirs in northeast Ohio, where many of the reservoirs have become problem areas for emitting H2S gases as a result of improper restoration of strip-mined land prior to the Surface Mining Control and Reclamation Act of 1977. 
 
Hydrogen sulfide (H2S), a colorless, flammable gas that smells like rotten eggs, is a hazardous substance to both people and the environment. When exposed to even low levels of hydrogen sulfide gas, people can experience eye irritation, a sore throat and cough, shortness of breath, and fluid in the lungs.
Read More