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CALIBRATION PROCESS FOR
SCHROEDER BROTHERS CORPORATION,
MODEL GS-5
Preliminary instructions ................................
Equipment setup ............................................
Vacuum............................................................
Pressure...........................................................
Final procedure ...............................................
IDENTIFICATION AND DESCRIPTION
1. Test Instrument Identification.
This bulletin provides instructions for the
calibration of Compound and Vacuum Gages, Marsh, Types 2 and 3, and Schroeder
Brothers Corporation, Model GS-5. The manufacturers' manuals were used as the prime
data sources in compiling these instructions. The equipment being calibrated will be
referred to as the TI (test instrument) throughout this bulletin.
a. Model Variations. Models vary mainly in scales. When calibrating, check cardinal
points applicable to TI. Similar instruments may be calibrated using the technique
described in this bulletin. In cases where accuracy of TI cannot be determined, the TI will
be certified to one-half of one minor scale division.
b. Time and Technique. The time required for this calibration is approximately 2
hours, using the physical technique.
2. Forms, Records, and Reports
a. Forms, records, and reports required for calibration personnel at all levels are
prescribed by TB 750-25.
b. Adjustments to be reported are designated (R) at the end of the sentence in which
they appear. When adjustments are in tables, the (R) follows the designated adjustment.
Report only those adjustments made and designated with (R).
3. Calibration Description. TI parameters and performance specifications which
pertain to this calibration are listed in table 1.
