NPFC - MIL-I-25863
INDICATOR, ELECTRICAL TACHOMETER 0-110 PERCENT RPM, 2 INCH SIZE, INTEGRALLY LIGHTED
| Organization: | NPFC |
| Publication Date: | 15 August 1990 |
| Status: | active |
| Page Count: | 29 |
scope:
This specification covers two types of hermetically sealed, remote indicating percent speed tachometer indicator, 2 inches in diameter, clamp mounted, with a range of 0-110 percent rpm.
Indicators shall be of the following types, as specified (see 6.2):
ERU-5/A Cover glass coated with an antireflection coating MIL-C-675
ERU-SA/A Cover glass coated with multilayer antireflection coating of high efficiency.
intended Use:
The tachometer indicator covered by this specification is intended for use to indicate the rotational speed of a jet or-prop-jet-engine in percent rpm. The calibration is based on the generators... View More
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