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The New York State Department of Environmental Conservation has added a link to a translation service developed by Microsoft Inc., entitled Bing Translator, as a convenience to visitors to the DEC website who speak languages other than English.

Additional information can be found at DEC's Language Assistance Page.

Heavy Duty Inspection/Maintenance Program DEC Approved Smokemeters

Robert H. Wager Co., Inc
570 Montroyal Rd.
Rural Hall, NC 27045
Phone: (336) 969-6909
Approved smokemeter: Wager 7500*

Cal Test Instruments, Inc.
126 Marine Ave.
Wilmington, CA 90744
Phone: (310) 835-6909
Approved smokemeter: CalTest 1000-WIN-TR*

Red Mountain Engineering
17767 Mitchell N.
Irvine, CA 92614
Phone: (949) 595-4475
Approved smokemeter: Smoke Check 1667*

Robert Bosch Corporation
2800 South 25th Ave.
Broadview, IL 60153
Phone: (855) 426-7247
Approved smokemeter: Bosch RTT 100*

Environmental Systems Products, Inc. (ESP)
11 Kripes Rd.
East Granby, CT. 06026
Phone: (860) 392-2162
(800) 695-4377
Approved smokemeter: ESP Diesel-sense 1667*

SPX Corporation
8001 Angling Rd.
Portage, MI 49024
Phone: (800) 233-7055
Approved smokemeter: SPX Dieseltune DX-240*

ProTech USA
No longer in business
Approved smokemeter: Protech OPAX 2000-II*

*Note: All of the above smokemeters must come equipped with functioning engine oil temperature and engine RPM sensors

(updated October 3, 2014)


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  • NYSDEC
    Division of Air Resources
    Heavy Duty Diesel Vehicles
    625 Broadway
    Albany, NY 12233-3255
    518-402-8292
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  • Page applies to all NYS regions