TB 9-6685-316-50
Table 2. Minimum Specifications of Equipment Required - Continued
Minimum use
Manufacturer and model
Item
Common name
specifications
(part number)
A4
DEADWEIGHT2
Range: 10 to 10,000 psi
Mansfield and Green, Model 10-
PRESSURE TESTER
Accuracy: 0.15% of reading
10525 (8598963)
(Certified)
A5
DEADWEIGHT1
Range: 10 to 10,000 psi
Mansfield and Green, Model RQ-
PRESSURE TESTER
Accuracy: 0.05% of reading
100 (7911584)
1Secondary
reference standards set.
2Secondary
transfer standards set.
Common name
Description
Item
(official nomenclature)
(part number)
B1
BENCH LEVEL1
Starrett No. 88 Type II, Class B, Style 2, or equivalent
(7902565)
B2
MEASURING TAPE
1/16-in. graduations (5210-287-3335, part of tool kit
7659911)
1Secondary
transfer standards set.
6. Preliminary Instructions
a. The
instructions outlined in this paragraph are
preparatory to the
calibration
process. Personnel should become familiar with sections I, II, and III before beginning
b. Items of equipment used in this procedure are referenced within the text by
common name and item identification number as listed in tables 2 and 3. For the
identification of equipment referenced to, item numbers prefixed with A, see table 2, and
c. Visually,
inspect TI far any
signs of
damage or
deterioration.
d. Remove deadweight pressure tester (A5) (standard) from carrying case and place
on clean, sturdy workbench with height of approximately 30 inches.
WARNING
One person should not attempt to lift or carry the sets of
weights any distance. Each set weighs approximately 100
pounds.
e. Certify
weights and
pistons of TI in
accordance with TB
9-6670-254-50 except do
not issue a list of recorded readings. The standard weight tolerance class shall be class
"C".
NOTE
The weights will be denoted by the nominal developed
pressure throughout this bulletin. The TI and standard each
have four sizes of weights plus two pistons. The nominal
weight nominal developed pressure and quantity per unit are