Steve, In your BEOWULF PDF, and in the Cruising Encyclopedia you mention an exhaust pyrometer. For small Diesels—30 to 60 HP, wet exhaust—what kind, brand and range of temperature, sensor and display do you recommend? At what temperature should the alarm sound? Should I fit it closest to the exhaust manifold or closest to the muffler? Thanks for your constant support, Igor
Hi Igor: The location of the pyrometer is something that must be carefully matched to the engine manufacturer’s standards—but usually somewhere at the end of the exhaust system, while the exhaust is still dry.
You need to get the specific heat-work corellation data from the engine mfg.
As to pyrometer suppliers, we use a Hewitt. But any industrial supply company, or diesel engine supplier will have something on the shelf. (Also check out Murphy pyrometers.)
Temperature range is usually up to about 650/700C.
Once again, the precise location is critical to getting results that will correlate with factory data. Regards–Steve
Posted by Steve Dashew (November 30, 1999)
September 11th, 2009 at 7:19 pm
For you pyrometer fans:
Elemental Mercury Used in Flow Meters, Natural Gas Manometers, and Pyrometers; Proposed Significant New Use Rule
AGENCY: Environmental Protection Agency (EPA).
ACTION: Proposed rule for 40 CFR Part 721
SUMMARY: EPA is proposing a significant new use rule (SNUR) under section 5(a)(2) of the Toxic Substances Control Act (TSCA) for elemental mercury (CAS No. 7439-97-6) for use in flow meters, natural gas manometers, and pyrometers, except for use in these articles when they are in service as of the effective date of the final rule. This action would require persons who intend to manufacture (including import) or process elemental mercury for an activity that is designated as a significant new use by this proposed rule to notify EPA at least 90 days before commencing that activity. Persons subject to the provisions of this proposed rule would not be exempt from significant new use reporting if they import into the United States or process elemental mercury as part of an article. The required notification would provide EPA with the opportunity to evaluate the intended use and, if necessary, to prohibit or limit that activity before it occurs.
DATES: Comments must be received on or before November 10, 2009.
09/11/2009 74 FR 46707-46714 (Vol. 74, No. 175)
http://www.FederalRegister.com