DEPARTMENT OF THE ARMY TECHNICAL BULLETIN
CALIBRATION PROCEDURE FOR
Headquarters, Department of the Army, Washington, D. C.
24 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
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directly to Commander, US Army Armament Materiel Readiness Command, Attn: DRSAR-MAS-C,
Aberdeen Proving Ground, MD 21010.
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Page
IDENTIFICATION
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
PRESSURE gage .............................................................................................. 8
AIR FLOW gage ................................................................................................ 9
Final procedure ................................................................................................ 10
SECTION I.
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin
records, and reports required for calibration personnel at
provides instructions for the calibration of Tester, Airflow
all levels are prescribed by TM 38-750. DA Form 2416
Resistance, Q179. The airflow resistance tester will be
must be annotated in accordance with TM 38-750 for
referred to as the "TI" or test instrument throughout this
each calibration performed.
bulletin.
a. Model Variations. None.
3. Calibration Description.
TI parameters and
b. Time and Technique. The time required for
performance specifications which pertain to this
this calibration is approximately 2 hours, using the
physical technique.
Table 1. Calibration Description
Test Instrument Parameters
Performance Specifications
Pressure
Range: 0 to 3 inches of water
Airflow
Accuracy: 2% of full scale
Range: 0 to 6800 cc/min
Accuracy: t 2% of full scale
1