1、FORD LABORATORY TEST METHOD BP 118-03 2001 O925 2000 02 29 REFRIGERANT PERMEATION TEST PROCEDURE Revised Editorial - no technical change A. Cockman Revised Editorial - no technical change A. Cockman Application This procedure is used to measure the rate at which R134a or other specified refrigerant
2、permeates HNBR or other specified compressor manifold -rings at high temperature conditions. Apparatus Required Oven Standard laboratory oven, temperature range above 1 O0 OC. Low Temperature Chamber Balance Balance capacity of 3000 g with an accuracy of +/- 0.001 g. Refrigerant Bomb Steel refrigera
3、nt bomb. See attached drawings. Materials Required FS-10 Compressor Manifold Orings Must be made of HNBR material, unless otherwise specified. Example: Ford Standard Part Number N806959. Refrigerant Supply Conditioning and Test Conditions All test values indicated herein are based on material condit
4、ioned in a controlled atmosphere of 23 “C +/- 2 OC and 50 +/- 5 % relative humidity for not less than 24 hours prior to testing and tested under the same conditions unless otherwise specified. I I Date I Action I Revisions I I 19961017 I Copyright O 2001, Ford Glcbal Technologies, Inc FORD LABORATOR
5、Y TEST METHOD BP 118-03 Procedure A. Charging 1. Make sure no residue remains in refrigerant bomb from previous testing. After bomb is cleaned, handle it only with clean gloves. 2. Chill refrigerant container AND bomb for 2 hours at - 40 OC. 3. Pour 4.0 +/- 0.5 cc of test refrigerant into the bottom
6、 of the test bomb. For example, this quantity of RI 34a will provide approximately 1.73 MPa pressure at 1 O0 “C given our bomb volume of 78.3 cc. Different amounts of refrigerant may be used to provide different pressures. Invert the container when dispensing so that the refrigerant can be dispensed
7、 in the liquid phase. 4. Place the FS-10 compressor manifold Oring to be tested in the groove of the body top half section of the bomb, making certain that it stays centered. 5. Immediately place the top half section of the bomb onto the bottom half section and tighten the bolts securely to prevent
8、leakage of the refrigerant. 6. Allow the assembled bomb to come to room temperature and make sure that no condensed moisture is on its outer surface. 7. Record the total weight of the assembled bomb/Oring/refrigerant assembly. B. Testing 1. Heat age the bomb at 100 OC. 2. After 22 hours of aging, re
9、move the bomb from the oven. 3. Cool at room temperature for 2 hours. check (at 22 hours) is to verify that there are no gross leaks in the fixture. Check for leaks by weighing (Step 4). The initial 4. Weigh the cooled bomb assembly and record the initial weight. 5. Repeat the steps above, weighing
10、the bomb twice weekly. Record the number of hours elapsed at each weighing. Plot data until weight loss reaches a steady state. Take at least five readings total. 6. Calculate the refrigerant loss over the steady state period (in grams). Then calculate the annual permeation rate (in grams per year).
11、 7. Open the bomb in a fume hood, only after it has cooled. Page 2 of 5 Copynght02001, Ford Global Technologies, Inc FORD LABORATORY TEST METHOD BP 118-03 C. Reported Data 1. 2. Total the number of days/hours the permeation test was run. Report the steady state permeation rate (in grams per year). C
12、hemicals, materials, parts, and equipment referenced in this document must be used and handled properly. Each party is responsible for determining proper use and handling in its facilities. Page 3 of 5 Copynght02001, Ford Global Technologies, Inc FORD LABORATORY TEST METHOD BP 118-03 19.81 IT EF - 2
13、6.16 I b-3.18 (TYP) WALL 6.73 DIA HOLE THRU WP (4) PLACES SAE J405 30304 Stainless Steel (Annealed) Bottom Half Page 4 of 5 Copynght02001, Ford Global Technologies, Inc FORD LABORATORY TEST METHOD BP 118-03 ENG RAVE S 0 MEW H E RE THE MEASURED DIMENSION 1.52 DIA HOLE (PRESSURE RELIEF) DRILL & TAP 1M X 1.25 (THRU) TYP(4) PLACES SAE J405 30304 Stainless Steel (Annealed) TOP Page 5 of 5 Copynght02001, Ford Global Technologies, Inc
