TB 3-6665-313-50
DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
CALIBRATION PROCEDURE FOR
TESTER, AIR LEAKAGE (DRY BUBBLE), Q204
NSN 6665-01-024-0529
Headquarters, Department of the Army, Washington, DC
28 June 1977
REPORTING OF ERRORS
You can help improve this publication by calling attention to errors and by recommending
improvements and stating your reasons for the recommendations. Your letter or DA Form 2028
(Recommended Changes to Publication and Blank Forms) should be mailed directly to
Commander, US Army Armament Materiel Readiness Command, Attn: DRSAR-MAS-C, Aberdeen
Proving Ground, MD 21010.
Paragraph
Page
IDENTIFICATION AND DESCRIPTION
Test instrument identification .......................................................................... 1
Calibration data card (DA Form 2416) .............................................................. 2
Calibration description...................................................................................... 3
EQUIPMENT REQUIREMENTS
Equipment required.......................................................................................... 4
Accessories required ........................................................................................ 5
CALIBRATION PROCESS
Preliminary instructions .................................................................................... 6
Equipment setup .............................................................................................. 7
Gage................................................................................................................ 8
Final procedure ................................................................................................ 9
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SECTION I
IDENTIFICATION AND DESCRIPTION
all levels are prescribed by TM 38-750. DA Form 2416
1. Test Instrument Identification.
This bulletin
must be annotated in accordance with TM 38-750 for
provides instructions for the calibration of Tester, Air
each calibration performed.
Leakage, (Dry Bubble), Q204. The equipment being
3. Calibration Description.
TI parameters and
calibrated will be referred to as the "TI" or test
performance specifications which pertain to this
equipment throughout this bulletin.
calibration are listed in table 1.
a. Model Variations. None
b. Time and Technique. The time required for
Table 1. Calibration Description
this calibration is approximately 1 hour, using the
physical technique.
2. Calibration Data Card (DA Form 2416). Forms,
Test Instrument
Performance specifications
records, and reports required for calibration personnel at
parameters
Vacuum
Range: 0 to 8 inches of water
Accuracy: 2% of full scale
1
