System Features Advanced PLC-Based Automation Controls-Unique In Gas Detection
CHATSWORTH, Calif., December 15 - Interscan Corporation has recently installed a large and comprehensive carbon monoxide monitoring system at a heavy equipment testing center. The dual-purpose unit will maintain detailed records of employee exposure, and-in conjunction with a building management system-will also be used to control ventilation in the structure.
As such, the amount of outside air brought in will be sufficient to maintain a healthy environment, without needlessly taxing the heating and air conditioning. Thus, energy is being saved. Michael D. Shaw, Interscan's Executive VP notes, "Green heavy equipment is being perfected inside a green building that is energy efficient."
All user control of the gas detection system is via touchscreen, and a remote annunciator panel provides additional indication of potentially dangerous carbon monoxide levels in the facility. In all, 32 sampling points are continuously monitoring the air in the testing center.
"There were numerous design challenges in this application," says Scott Richards, Interscan's systems manager. "The size of the equipment being tested in the building, with vehicles as tall as 30 feet, along with the requirement that air sample be drawn from high up, precluded the use of diffusion head sensors. Moreover, even with a sample-draw approach (utilizing a diaphragm pump bringing sample back to the analyzer enclosure), conventional end-of-line sample filters could not be employed. Who would want to change them 40 feet up in the air?"
"Instead, we chose to use in-line filtration at ground level, along with an automatic sample line backflush feature. Remember, many of these vehicles are diesel-powered, and in test mode they could be putting some particulate into the air," added Richards.
Another factor to be overcome was RFI (Radio Frequency Interference) caused by the omnipresent two-way radios. Special packaging was utilized to combat the effects of RFI on the system electronics.
The monitoring system includes Interscan's popular Arc-Max® data acquisition/archiving package, which will keep track of employee exposure to carbon monoxide, in accordance with OSHA guidelines.
Richards concludes, "As far as we know, this system represents the most extensive use of automation controls ever seen, in a gas detection system."
The system is featured on Interscan's website...
About Interscan Corporation
Established in 1975 and independently owned, Interscan Corporation is a leading manufacturer of gas detection systems. Known especially for its custom systems and niche application areas, Interscan products can be found in such diverse industries as aerospace, agriculture, automotive, building management, chemicals, health care, petroleum refining, pulp and paper, and steelmaking.
Interscan analyzers are also well introduced into regulatory agencies throughout the world.
For more information: Please contact
Name: Interscan Corporation
Address: PO Box 2496
Phone: 1 800 458-6153 (US and Canada)
FAX: (818) 341-0642