Transcription of Cross Reference Chart API RP 13C SQUARE MESH
1 API RP 13 C is the new recommended way of classifying Shaker Screens. Testing utilizes rotap machine and ASTM sieves. A manufactures screens sample is tested within this sieve column. It is based on 100% retention of the media (Aluminum oxide) on the test screen for API classification for that screen . Cross Reference Chart API RP 13 CSQUARE MESHC urrent screen DesignationAPI RP 13C DesignationAPI MICRON RANGE FOR screen DESIGNATIONCWC UF 24 API-20780 925 CWC UF 30 API -25655 780 CWC UF 550 CWC UF 390 CWC UF 70 API-60231 275 CWC UF 84 API-70196 231 CWC UF 110 API-80165 -196 CWC UF 165 CWC UF UF 210 API-14098 - UF 250 API-20069 - UF 270 API-20069 - UF 325 API-23058 69 CWC UF 49 Note about Aluminum OxideAluminum Oxide has been designated at the media to be used - it gives the most consistent results.
2 Regrettably it may not be the best choice as it is not spherical in nature, such as sand, but long, wide and thin like a feather. Thus it may classify screens with larger rectangular openings with lower API ratings than SQUARE mesh screens. If screen selection is based solely on the results of this media alone, then screen conductance and life may be severely affected as most rectangular meshes have greater open area and stronger Reference Chart API RP 13 CCRX OBLONG MESHT esting on CRX performed by Westport LabCurrent screen DesignationAPI RP 13C DesignationMeasured Cut PointAPI Micron Range for screen DesignationMicron Difference to Next API DesignationCRX 84, OBLONGAPI 60 MESH233231-2752 CRX 110, OBLONGAPI 70 MESH199196-2313 CRX 140, OBLONGAPI 80 MESH166165-1961 CRX 175, OBLONGAPI 100 210.
3 OBLONGAPI 120 250, OBLONGAPI 140 testing, as expected, verified that aluminum oxide underrated the CRX screens by at least one API designation. Example CRX 250 field report rated the screen as a 170 API not a 140.
