Downloaded from https://www.everyspec.com MIL-STD-81OC 1, 1 I I 1 I 1 1 1 1 t 1 1 I I I I 1 r 1 I I I 4 2 4 68101211t 161820222t26 28303231436381J0421J4 J$6J CUMULATIVEHOURS r 1 I~ 1 UCLE . t48 HOWLS---J FIGURE 507.1-2. Humidity Cycle procedures 11 and III 1. Tolerance during temperature change shal1 be not greater than 3° C (5”F) 2. Relative humidity shall be maintained at 94 +4 percent at all times, except that during the descending temperatureper=od, the relative humidity may be permitted to drop as low as 85 percent. 3. Rate of temperature change between 30° and and 149”F) shall be not less than 8° C (14.4”F) per hour. 4.
The temperature increase in this portion of the curve shall be not less than 10° C (18”F). 5. Test measurements shall be taken only at applicable equipment or system specification. the period specified in the MSTHOD 507.1 B 507.1-5