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Evaluation of Reo Model Bt 300 C-d Blasting Machine Tester.

Authors
Scott-JH; Becker-KR; Hay-JE
Source
MISSING :15 pages
Link
NIOSHTIC No.
10002238
Abstract
At the request of the Mine Safety and Health Administration, U.S. Department of Labor, the Bureau of Mines evaluated the model bt 300 c-d blasting machine tester, manufactured and distributed by Research Energy of Ohio, Inc. (REO), to determine whether the tester performed as stated by the manufacturer and responded satisfactorily to electrical faults introduced into the blasting machine circuit. Tester readings were recorded for 13 blasting machines and for 12 circuits constructed to simulate the electrical parameters of actual machines. The tester readings were acceptable for all of the blasting machines, although the switch position assigned to one machine produced an off-scale reading. The tester responded satisfactorily to the simulated circuits and detected serious voltage or capacitance faults when they were introduced. However, it did not respond accurately to certain resistance faults. Temperature tests were also made, and the tester performed equally well at temperatures of 20 deg, 42 deg, and 81 deg f.
Publication Date
19820101
Document Type
IH; Report of Investigations
Fiscal Year
1982
NTIS Accession No.
NTIS Price
Identifying No.
RI 8606
NIOSH Division
PRC;
Source Name
MISSING
State
OH;
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