SUBTITLE B: AIR POLLUTION
CHAPTER II: ENVIRONMENTAL PROTECTION AGENCY
PART 276 PROCEDURES TO BE FOLLOWED IN THE PERFORMANCE OF INSPECTIONS OF MOTOR VEHICLE EMISSIONS
SECTION 276.507 ON-ROAD REMOTE SENSING TEST SYSTEMS FUNCTIONAL REQUIREMENTS AND PERFORMANCE CRITERIA
Section 276.507 On-Road Remote Sensing Test Systems Functional Requirements and Performance Criteria
a) The on-road remote sensing test equipment shall consist of the following:
1) An infrared SDM capable of measuring the concentration of HC, CO, and CO2 present in an in-use vehicle;
2) A camera system that automatically photographs vehicle license plates;
3) A system that links each emission record to the correct vehicle license plate photograph; and
4) A laser based speed and acceleration measurement system.
b) The Infrared SDM shall be of a design certified to meet the following accuracy requirements:
|
Pollutant |
Range |
Accuracy |
|
|
|
|
|
HC |
ALL |
±150 ppm or ±15 percent of expected HC Concentration |
|
|
|
|
|
CO |
≤ 3.0 percent |
±10 percent or 0.25 percent (Whichever is greater) |
|
|
|
|
|
|
> 3.0 percent |
±15 percent |
c) The speed and acceleration measurement system shall be of a design certified to measure vehicle speed to within ±0.5 miles per hour and vehicle acceleration to within ±0.3 miles per hour per second at the moment exhaust is measured.
(Source: Amended at 35 Ill. Reg. 11268, effective June 28, 2011)