MIL-T-24797 1995 Edition, June 22, 1995
TACHOMETERS, FIBER OPTIC, (NAVAL SHIPBOARD USE), (METRIC), GENERAL SPECIFICATION FOR
Includes all amendments and changes through Notice 3, August 9, 2002
This specification covers fiber optic tachometers capable of measuring rotational speed for use in Navy shipboard applications.
The sensor classification shall consist of a series of designations which shall be assigned and listed in the format below.
24797 - X - X - X - X Specification Sensing Input Opto-Electronics Sensor Mechanism Power Module Type Mounting 18.104.22.168 22.214.171.124 126.96.36.199 Configuration 188.8.131.52
The sensing mechanism of transduction shall be designated as follows:
1 - Reflection
2 - Beam interruption
3 - Magneto-optic effect
The input power required to operate the opto-electronics module shall be designated as follows:
DC - 28 Volts direct current (Vdc)
AC - 115 Volts alternating current (Vac) Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: Commander, Naval Sea Systems Command, SEA 03R42, 2431 Jefferson Davis Hwy., Arlington, VA 22242-5160, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter.
The mounting of the tachometer's opto-electronics module type shall be designated as follows:
Type A - Bulkhead Mounted (See 184.108.40.206)
Type B - Console Mounted (See 220.127.116.11)
The mounting of the tachometer's sensor shall be designated as follows:
Mount 1 (See 18.104.22.168)