TB 3-6665-313-50
SECTION II
EQUIPMENT REQUIREMENTS
table 2 provide a
four-to-one accuracy ratio between the
4. Equipment Required.
standard and TI. When the four-to-one ratio cannot be
The
met, the actual accuracy of the equipment selected is
equipment is issued with secondary transfer standards
shown in parenthesis.
5. Accessories Required. The accessories listed in
may be used by the calibrating activity when the
equipment listed in table 2 is not available. The items
selected must be verified to perform satisfactorily prior
except for one which is fabricated as shown in figure 1.
The equipment must meet or exceed the minimum use
necessary, the items other than the one fabricated may
specifications listed in table 2. The accuracies listed in
be substituted by equivalent items.
Figure 1. Fabrication instructions for connector (B4).
Table 2. Minimum Specifications of Equipment Required.
Item
Common name
Minimum use specifications
Manufacturer, model, and part number
A1
MANOMETER
Range: 0 to 8 inches of water
Wallace and Tiernan, Model 65D-4C-0120X or FA145600
Accuracy: 0.5%
(7912573).
Table 3. Accessories Required
Item
Common name
Description and part number
B1
TUBING
Plastic, - inch (R3603F) length as required. (NSN 9330-00-071-5373).
1
B2
CONNECTOR
2
B3
STOPPER
Pyrex, standard taper, ground joint, 8mm dia. At large end of ground zone,
corning glass works, part no. 410981.
1
Also used to calibrate the following equipment:
Tester, Leakage, Valve Assembly, Q210 (TB 3-6665-314-50)
Indicator, Resistance, Inhalation and Exhalation, Q213 (TB 3-6665-315-50).
2
Additional equipment required.
2