1、AMSC N/A FSC 5930 INCH-POUND MIL-DTL-28827/1C 26 January 2011 SUPERSEDING MIL-DTL-28827/1B 4 October 2004 DETAIL SPECIFICATION SHEET SWITCH, THERMOSTATIC (VOLATILE LIQUID), HERMETIC SEALED, SINGLE POLE DOUBLE THROW (SPDT), MEDIUM RESPONSE TIME Inactive for new design after 8 March 1999. This specifi
2、cation is approved for use by all Departments and Agencies of the Department of Defense. The complete requirements for acquiring the switches described herein shall consist of this specification and the latest issue of MIL-DTL-28827. NOTES: 1. Dimensions are in inches. 2. Unless otherwise specified
3、tolerances are .005. FIGURE 1. Configuration 1. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-28827/1C 2 NOTES: 1. Dimensions are in inches. 2. Unless otherwise specified tolerances are .005. FIGURE 2. Configuration 2. Provided by IHSNot fo
4、r ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-28827/1C 3 REQUIREMENTS: Dimensions, configurations, and electrical schematic: See figure 1 and 2. Weight: 2 ounces approximately Calibration: See tables I, II, III, IV, and V. Proof pressure: 3,000 psig. Proof temp
5、erature: 100F above the maximum increasing set point. Time constant: Not to exceed 10 seconds in 75 centistokes, oil at 150 ft/min. Electrical ratings: Operating voltage: 285 V dc. Current rating: .080 to 1.0 amps resistive. Seal: Electrical chamber hermetic. Media: MIL-PRF-6083 High temperature: (A
6、mbient operating and non-operating): (+275F). Low temperature: (Ambient operating and non-operating): (-65F). Altitude: C(80,000 ft). Shock: M(100 gs). Vibration: S(test condition D, method 204 of MIL-STD-202). Endurance: B(25,000 cycles). Materials: All wetted materials shall be 300 series stainles
7、s steel. Non-wetted external parts shall be suitably protected against corrosion. Part or Identifying Number (PIN): Note: Design limitations (actuation values and tolerances, deadband and deactuation values and tolerances) should be coordinated with a manufacturer (s) listed on the QPL for this shee
8、t before specifying a particular “M” number. The fact that operating characteristics can be coded does not necessarily mean that it can be manufactured or procured. M28827/1- A C D A B Specification sheet number Configuration and setting code (see table I) High temperature setting to within 20F (see
9、 table II) or low end of differential setting (see table V) High temperature setting to within 2F and tolerance (see table III or table IV) or high end differential setting (see table V) Low temperature setting to within 20F (see table II) or low end differential setting (see table V) Low temperatur
10、e setting to within 2F and tolerance (see table III or table IV) or high end differential setting (see table V) Example of PIN: M28827/1-ACDAB identifies a switch of configuration 1 which actuates on increasing temperature at 146F 5F and deactuates at 102F 5F. Provided by IHSNot for ResaleNo reprodu
11、ction or networking permitted without license from IHS-,-,-MIL-DTL-28827/1C 4 TABLE I. Code characters for combinations of configurations and temperature setting modes. High Setting Low Setting Configuration 1 2 At 1/ At 1/ A J At 1/ By 2/ B K At 1/ Differential 3/ C L By 2/ At 1/ D M By 2/ By 2/ E
12、N By 2/ Differential 3/ F P Differential 3/ At 1/ G Q Differential 3/ By 2/ H R 1/ Setting values are designated by characters from tables II and III. 2/ Setting values are designated by characters from tables II and IV. 3/ Setting values are designated by characters from table V. TABLE II. Temperat
13、ure setting to within 20F. Temperature Code 100 A 120 B 140 C 160 D 180 E 200 F 220 G 240 H 260 J 280 K 300 L 320 M 340 N 360 P 380 Q 400 R 420 S 440 T 460 U 480 V 500 W Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-28827/1C 5 TABLE III. Te
14、mperature setting within2F and tolerance. Unit Tolerance 5 10 25 0 A L W 2 B M X 4 C N Y 6 D P Z 8 E Q 1 10 F R 2 12 G S 3 14 H T 4 16 J U 5 18 K V 6 Table IV. Temperature setting to within 2F. Unit Maximum or minimum 0 A 2 B 4 C 6 D 8 E 10 F 12 G 14 H 16 J 18 K TABLE V. Code letters for differentia
15、ls temperature settings. Code letter Differential temperature (F) A 0 B 5 C 10 D 15 E 20 F 25 G 30 H 35 J 40 K 45 L 50 M 60 N 75 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-28827/1C 6 Changes from previous issue. The margins of this speci
16、fication are marked with vertical lines to indicate where modifications from this revision were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of
17、this document based on the entire content irrespective of the marginal notations. Referenced Documents: MIL-DTL-28827 MIL-PRF-6083 MIL-STD-202 MS33678 SAE-AS4395 Custodians: Preparing activity: Army - CR DLA- CC Navy - EC Air Force - 85 (Project number 5930-2011-005) DLA - CC Review activities: Air
18、Force - 99 NOTE: The activities listed above were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https:/assist.daps.dla.mil/ . Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
