ATI D12-IR Combustible Gas Transmitter
- Optional relay outputs can be used for local alarm functions
- Integral LCD indicates gas concentration as well as alarm conditions
- Internal data logger stores measured gas values at user-definable intervals
|D12-IR||Combustible gas transmitter|| |
|Drop ships from manufacturer|
The D12-IR gas transmitter eliminates the poisoning problems inherent in catalytic bead sensors. While catalytic LEL sensors offer reliable service, the presence of silicon vapors, hydrogen sulfide, and halogenated hydrocarbons can quickly degrade sensor performance. Infrared sensing technology is not susceptible to these potential interferants, which means greater measurement stability and longer sensor life.
D12-IR transmitters can be factory calibrated for volumetric methane measurements in special applications. Ranges from 0-10% to 0-100% by volume are available. A separate sensor is also available for high percent level measurements of heavier hydrocarbons such a butane and propane.
The D12-IR transmitter can also be configured with Infrared sensor for carbon dioxide (CO2) or nitrous oxide (N2O) detection. All sensor versions can operate in diffusion mode for ambient air or with a flow cell for pumped samples.
Because the IR sensor is always in an active state, the transmitter continuously monitors critical sensor functions and indicates any sensor problems, both on the display and via the analog output.
Transmitters are designed for operation in hazardous areas. The cast aluminum housing for the D12 transmitter is rated for Class 1, Division 1, Group B, C, D locations and is UL, FM, and CSA certified.
The transmitter is available with either HART or MODBUS protocol. The HART protocol supports the HART Universal and Common Practice Commands at 1200 baud using the Bell 202 FSK modem standard. The MODBUS protocol supports 9600 baud access to concentration and status information, and supports alarm setup and many other functions on either RS485 or RS232 (software selectable).
In The News
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 More
Researchers at Washington State University will quantify uncombusted methane emissions throughout the U.S., according to a release . The investigators will look at emissions from local gas systems and try to estimate a national emissions rate.
Uncombusted natural gas is more harmful to the atmosphere than carbon dioxide because it has a higher warming potential. Emissions of uncombusted methane along the natural gas supply line haven’t been measured on a national scale and studying them will become more important as the U.S. natural gas industry continues to expand.
The Washington State study begins in April and is funded by major natural gas utilities, the Environmental Defense Fund and Conestoga-Rovers and Associates, an environmental engineering and consulting firm.Read More
A new air monitoring vehicle was recently delivered to the city of Vancouver with praise and skepticism from metropolitan residents, according to The Province.
The vehicle, known as the Mobile Air Monitoring Unit, is loaded with sensors which will monitor air quality. The city wants to monitor particulates in the air from coal, diesel and oil tankers.
Data collected by the truck transmits to the city hall.
Some citizens are happy to have a new mobile air monitoring station that will supplement the city’s 26 stationary monitoring stations. However, many citizens criticized the loaded Ford F-450’s price tag of more than $280,000.Read More