502.7 LOW TEMPERATURE CONTENTS
| Paragraph | Page | |
|---|---|---|
| 1. | SCOPE | 1 |
| 1.1 | PURPOSE | 1 |
| 1.2 | APPLICATION | 1 |
| 1.3 | LIMITATIONS | 1 |
| 2. | TAILORING GUIDANCE | 1 |
| 2.1 | SELECTING THE LOW TEMPERATURE METHOD | 1 |
| 2.1.1 | EFFECTS OF LOW TEMPERATURE ENVIRONMENTS | 1 |
| 2.1.2 | SEQUENCE AMONG OTHER METHODS | 2 |
| 2.2 | SELECTING PROCEDURES | 2 |
| 2.2.1 | PROCEDURE SELECTION CONSIDERATIONS | 2 |
| 2.2.2 | DIFFERENCE AMONG PROCEDURES | 2 |
| 2.3 | DETERMINE TEST LEVELS AND CONDITIONS | 3 |
| 2.3.1 | CLIMATIC CONDITIONS | 3 |
| 2.3.2 | EXPOSURE DURATION | 5 |
| 2.3.3 | TEST ITEM CONFIGURATION | 5 |
| 2.3.4 | ADDITIONAL GUIDELINES | 5 |
| 3. | INFORMATION REQUIRED | 5 |
| 3.1 | PRETEST | 5 |
| 3.2 | DURING TEST | 6 |
| 3.3 | POST-TEST | 6 |
| 4. | TEST PROCESS | 6 |
| 4.1 | TEST FACILITY | 6 |
| 4.2 | CONTROLS | 6 |
| 4.3 | TEST INTERRUPTION | 6 |
| 4.3.1 | INTERRUPTION DUE TO CHAMBER MALFUNCTION | 7 |
| 4.3.2 | INTERRUPTION DUE TO TEST ITEM OPERATION FAILURE | 7 |
| 4.4 | TEST SETUP | 7 |
| 4.5 | TEST EXECUTION | 7 |
| 4.5.1 | PREPARATION FOR TEST | 7 |
| 4.5.1.1 | PRELIMINARY STEPS | 7 |
| 4.5.1.2 | PRETEST STANDARD AMBIENT CHECKOUT | 7 |
| 4.5.2 | PROCEDURE I - STORAGE | 8 |
| 4.5.3 | PROCEDURE II - OPERATION | 8 |
| 4.5.4 | PROCEDURE III - MANIPULATION | 9 |
| 5. | ANALYSIS OF RESULTS | 9 |
| 6. | REFERENCE/RELATED DOCUMENTS | 10 |
| 6.1 | REFERENCED DOCUMENTS | 10 |
| 6.2 | RELATED DOCUMENTS | 10 |
MIL-STD-810H METHOD
502.7 TABLES
| TABLE | 502.7-I SUMMARY OF LOW TEMPERATURE CYCLE RANGES | 4 |
| TABLE | 502.7-II FREQUENCIES OF OCCURRENCE OF EXTREME LOW TEMPERATURES | 4 |
MIL-STD-810H
METHOD
502.7 METHOD 502.7
LOW TEMPERATURE
NOTE: Tailoring is essential. Select methods, procedures, and parameter levels based on the tailoring process described in Part One, paragraph 4.2.2, and Annex C. Apply the general guidelines for laboratory test methods described in Part One, paragraph 5 of this Standard.