MIL-DTL-5790H
storage. Nonmagnetic materials shall be used except where magnetic materials are deemed essential.
Cadmium shall not be used on or in the transmitter without written approval of the procuring activity.
3.2.1.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or
environmentally preferable materials should be used to the maximum extent possible provided that the
material meets or exceeds the operational and maintenance requirements, and promotes economically
advantageous life cycle costs.
3.2.2 Hermetically sealed case. The case shall provide a hermetically sealed enclosure for
the entire internal mechanism of the transmitter. The design of the case shall permit removal and
replacement of the internal mechanism and resealing of the case. The hermetic sealing shall not be
affected by any atmospheric conditions to which the transmitter may be subjected.
3.2.3 Adjustments. No special tools shall be required to adjust the transmitter. The
means of adjustment shall be accessible from the exterior of the case and shall provide a
minimum of 14 angular degrees of adjustment of the synchro rotor.
3.2.4 Attitude. The transmitter shall be capable of operating in any position.
3.2.5 Lubrication. The transmitter shall not require periodic lubrication.
3.2.6 Overpressure stop. An overpressure stop shall be provided and shall be designed
to restrain the prime mover. The stop shall allow the indicator pointer to travel beyond full scale
to a point approximately midway between the last and zero graduation.
3.2.7 Restrictors. No restrictors or capillary line connecting the pressure fitting to the
pressure element shall be used that will introduce an objectionable lag in the indication response.
3.2.8 Bosses. Bosses shall be provided in accordance with MS28005 for external pressure
and vent connections to the pressure sensitive element and the opposing pressure element,
respectively. The bosses shall be identified with white lettering "P" and "V" permanently
inscribed 0.125 inch in height.
3.2.9 Electrical connector. A hermetically sealed MS33678R14S-2P electrical connector
shall be provided.
3.2.10 Weight. The weight of the transmitter shall not exceed 1.4 pounds.
3.3 Part numbering of interchangeable parts. All parts having the same manufacturer's
part number shall be functionally and dimensionally interchangeable. The item identification
and part number requirements of ASME Y14.100 shall govern the manufacturer's part numbers
and changes thereto.
3.4 Nameplate. A nameplate shall be attached to the mounting bezel with screws.
Where applicable, the information marked thereon shall conform to MIL-STD-130.
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