1、 FORD LABORATORY TEST METHOD BI 110-03 Date Action Revisions 2000 08 31 Revised Editorial no technical change A. Cockman 1996 10 02 Printed copies are uncontrolled Page 1 of 6 Copyright 2000, Ford Global Technologies, Inc. MEASUREMENT OF DISTINCTNESS OF IMAGE OF PAINTED SURFACES Application This pro
2、cedure is used for measuring the distinctness of image (D.I.) of painted surfaces with a beam of incident light at an angle of 30 +/ - 3 degrees. Materials and Apparatus Required Dorigon Glossmeter D47R - 6F Dorigon meter (optical sender and signal processor).* Primary Standards A highly polished, p
3、lane, black glass surface with an assigned D.I. value.* Secondary Standard A semi - gloss ceramic tile with an assigned D.I. value.* * Source: Hunter Associates Laboratory, Inc. Fairfax, Virginia U.S.A. Soap - liquid, neutral. Deionized or Distilled Water - 10 ppm max dissolved solids (ASTM D 1888).
4、 Panels As specified in FLTM BI 103 -02 (for spray systems), or FLTM BI 120 - 01 (for e lectrocoat systems), or as specified in the applicable engineering document. Conditioning and Test Conditions All test values indicated herein are based on material conditioned in a controlled atmosphere of 23 +/
5、 - 2 C and 50 +/ - 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. FORD LABORATORY TEST METHOD BI 110-03 Page 2 of 6 Co pyright 2000, Ford Global Technologies, Inc. Procedure Sample Preparation 1. Prepare paint panels per
6、 FLTM BI 103 - 02 or BI 120 -01, or specified by the applicable engineering document. 2. Wash the panels, if soiled, with neutral liquid soap and water, rinse with deionized or distilled water and blow off with air. Standardization 1. Release the standby button on the Glossmeter and allow the meter
7、to warm up for 15 minutes. 2. Screw the three alignment posts into the port collar. 3. Place the optical sensor in the cradle, with the specimen port facing upward. 4. Place the primary standard on the specimen port with the beam directional arrows in the same direction. 5. Press the R s button on t
8、 he signal processor (all other buttons must be in the released position). 6. Using the adjustment knob on the optical sensor, adjust until the digital readout shows the maximum R s reading. 7. Use the standardize control knob on the processor to adjust th e digital display in order to read the cali
9、brated R s value of the primary standard. 8. Press the D.I. button. If the value displayed is not within +/ - 1.0 of the assigned D.I. value, refer to Attachment A. 9. Place the secondary standard on the specimen port and press the R s button. 10. Adjust the maximum reading on the digital display by
10、 means of the adjustment knob on the end of the optical sensor. If the value is not within +/ - 2.0 of the calibrated R s value of the secondary standard, refer to Attac hment A. Note: Position and cleanliness of this standard is critical. 11. Press the D.I. button. If the value displayed is not wit
11、hin +/ - 3.0 of the calibrated D.I. of the secondary standard, refer to Attachment A. FORD LABORATORY TEST METHOD BI 110-03 Page 3 of 6 Co pyright 2000, Ford Global Technologies, Inc. Measuring D.I. - Test Panels 1. Pl ace the top of the test panel on the specimen port against the alignment posts. 2
12、. Press the D.I. button. 3. Adjust for the maximum positive display reading by means of the knob at the end of the optical sensor. 4. Read the D.I. value on the display and record. 5. Place the bottom of the test panel on the specimen port and repeat steps 1 through 4. 6. The D.I. for the panel shal
13、l be the average of the readings from the top and bottom of the test panel . Measuring D.I. - Vehicles 1. Remove the alignment p osts from the optical sensor viewing port. 2. Place the optical sensor on the vehicle. The arrow on the optical sensor must be pointed to the front of the vehicle. Note: W
14、hen measuring the hood, locate the optical sensor approximately 300 mm from the c owl and 300 mm outboard of the center line. Measure the right and left side, average the readings and record individual and average values. When measuring the deck lid, locate the optical sensor approximately 300 mm fr
15、om the backlight and 300 mm outboard of the center line. Measure the right and left side, average the readings and record individual and averaged values. When measuring the roof, locate the optical sensor approximately 300 mm forward of the front edge of the roof and 300 mm outboard of the center li
16、ne. Measure the right and left side, average the readings and record individual and averaged values. 3. Press the D.I. button. 4. Adjust for the maximum positive display reading by means of the knob at the end of the optical sensor and record. 5. Repeat steps 2 through 4 for the opposite side (of ho
17、od, deck lid, or roof as applicable). FORD LABORATORY TEST METHOD BI 110-03 Page 4 of 6 Co pyright 2000, Ford Global Technologies, Inc. General Information Instrumentation 1. The instrument should be cleaned regularly internally and externally. 2. It is best to keep the standby button engag ed when
18、the instrument is not in use in order to improve stability of the instrument, decrease the warm - up period necessary before beginning measurements, and extend lamp life. Standards 1. Store primary standard in a clean envelope. Wash with soap and water and dry with a soft cloth. Do not scratch. 2. S
19、tore secondary standard in a clean envelope. Wash with soap and warm water, rinse thoroughly and allow to air dry. Obtain a new standard if questionable readings are obtained. Chemicals, materials, par ts, and equipment referenced in this document must be used and handled properly. Each party is res
20、ponsible for determining proper use and handling in its facilities. FORD LABORATORY TEST METHOD BI 110-03 Page 5 of 6 Co pyright 2000, Ford Global Technologies, Inc. MEASUREMENT OF DISTINCTNESS OF IMAGE OF PAINTED SURFACES Attachment A Optical Sensor Calibration Note: The instrument is factory calib
21、rated and no significant change in calibration should occur after it leaves the factory. Consequently, if a problem arises when standardizing, exhaust all other possibilities for standardizing the instrum ent (e.g. cleaning, focusing) before attempting any of the following calibration adjustments. T
22、hese adjustments should be done only by a qualified technician. 1. Set the standardize control knob to its full counterclockwise position. 2. Turn the knob fi ve complete turns in the clockwise direction. (The instrument will then be at the center of its range.) 3. Place the optical sensor in the cr
23、adle. 4. Put the zero black box supplied with the standards over the specimen port. 5. Depress the CAL and R s b uttons. 6. Using a small screwdriver, adjust the R s zero trimpot through the access hole in the optical sensor until the display reads “+ 0.00“. 7. Depress the CAL and D.I. buttons and a
24、djust the D.I. zero trimpot on the optical sensor until the display reads “+ 0.00“. 8. Depress the CAL and R s buttons and adjust the 2 zero trimpot of the optical sensor until the display reads “+ 0.00“. 9. Place the primary standard on the specimen port. 10. Observe the arrow pointer positions on
25、the standard level. 11. Depress the R s button (all other buttons in the released position) and adjust for maximum reading on the display by using the adjustment knob at the end of the optical sensor. 12. Adjust the R s top scale trimpot through the access hole in the optical sensor until the readou
26、t displays the R s value of the primary standard. 13. Place the secondary standard on the specimen port. 14. Depress the CAL and R s buttons and record the value displayed on the readout. FORD LABORATORY TEST METHOD BI 110-03 Page 6 of 6 Co pyright 2000, Ford Global Technologies, Inc. 15. Depress th
27、e CAL and D.I. buttons and adjust the D.I. top scale trimpot in the optical sensor until the readout displays the exact value which was recorded in the previous step. 16. Depress the CAL and R s buttons and adjust the 2 top scale trimpot in the optical sensor until the readout displays the same valu
28、e as in the previous step. Note: The readout has now shifted one position to the left and the last digit on the right should be zero. 17. Repeat this complete procedure (except for setting the standardize control knob to center of its range) if substantial adjustment has been made. Note: For additional information refer to the Hunterlab Instruction Manual for the Model D47R -6F Dorigon Glossmeter.
