A320飞机维护手册 AMM STANDARD PRACTICES-AIRFRAME(101)

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R  rounded-point prods, diameter 4 mm (0.1574 in.). 
R  (2) Apply one prod on the composite panel: 
R  - a minimum of 50 mm (1.9685 in.) (Typical 100 mm (3.9370 in.)) from 
R  the edge of the panel and from the bonding point. 
R  (3) Apply the other prod to the adjacent primary metal structure near the 
R  panel. 
R  (4) Measure the resistance value: 
R  - make sure that the measured values are not higher than the maximum 
R  permitted values (Ref. TASK 20-28-00-869-002). 
R  (5) Remove the test equipment. 
R  5. Close-up________ 
R  Subtask 20-28-00-942-112 
R  A. Close Access 
R  (1) Make sure that the work area is clean and clear of tool(s) and other 
R  items.

 TASK 20-28-00-720-011

 Measurement of the Surface Electrical Resistance of External Composite Panels with a CORAS Resistivity-Continuity Test Set
 1. Reason for the Job
__________________
 Self Explanatory
 2. Job Set-up Information
______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE  QTY DESIGNATION
 -------------------------------------------------------------------------------
QB31B 1 RESISTIVITY - CONTINUITY TEST SET R QB31B1 1 RESISTIVITY - CONTINUITY TEST SET
 B. Referenced Information
 -------------------------------------------------------------------------------
REFERENCE  DESIGNATION
 -------------------------------------------------------------------------------
20-28-00-720-011  Measurement of the surface Electrical Resistance of External Composite Panels (without Non-Conductive Finish Paint) with Electrical Conductive Tape
 20-28-00-720-011  Measurement of the Surface Electrical Resistance of External Composite Panels (without Non-Conductive Finish Paint) with Probes
 20-28-00-869-002  Table of the Maximum Permitted Resistance Values
 3. Job Set-up
__________
 Subtask 20-28-00-869-072
 A. General
 (1)
 This is the recommended procedure for the measurement of the surface electrical resistance of an external composite panel with or without non-conductive finish paint on the antistatic paint.

 (2)
 As an alternative method, and only if the antistatic paint is not covered with a non-conductive finish paint, you can measure the resistance with an ohmmeter/megohmmeter (Ref. TASK 20-28-00-720-011) or with conductive electrical tape (Ref. TASK 20-28-00-720-011).

 

 4. Procedure
_________
 Subtask 20-28-00-420-090

 A. Measurement of the Surface Electrical Resistance
 (1) Equipment
R  (a) The RESISTIVITY - CONTINUITY TEST SET (QB31B) or RESISTIVITY -
R  CONTINUITY TEST SET (QB31B1) does a direct measurement of the surface electrical resistance of the antistatic paint on composite panels.
 NOTE : You can do the measurement on panels with or without
____ non-conductive finish paint on the antistatic paint.
 NOTE : Make sure that you obey the equipment manufacturer
____ instructions when you use the RESISTIVITY - CONTINUITY TEST SET.
 (2)
 Set the RESISTIVITY - CONTINUITY TEST SET to mode R1.

 (3)
 Connect the lead of probe R1 to the RESISTIVITY - CONTINUITY TEST SET.

 (4)
 Apply probe R1 to the panel.

 (5)
 Measure the resistance:

 -make sure that the measured values are not higher than the maximum permitted values (Ref. TASK 20-28-00-869-002).
 NOTE : If the red "dielectric" indicator light comes on:
____ -the surface electrical resistance is more than 200 Megohms.
 (6)
 Do the above steps again several times at different areas of the surface.

 (7)
 Remove the test equipment.

 

 5. Close-up________ 
R
 Subtask 20-28-00-942-100 
R  A. Close Access
 (1) Make sure that the work area is clean and clear of tool(s) and other items.

 

R TASK 20-28-00-720-011- 01

R Measurement of the surface Electrical Resistance of External Composite Panels R (without Non-Conductive Finish Paint) with Electrical Conductive Tape
R 1. Reason for the Job
__________________ R Self Explanatory R 2. Job Set-up Information
______________________
R A. Fixtures, Tools, Test and Support Equipment
R -------------------------------------------------------------------------------R REFERENCE QTY DESIGNATION
　
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