SECTION II EQUIPMENT REQUIREMENTS

TB 3-6665-313-50

SECTION II

EQUIPMENT REQUIREMENTS

table 2 provide a four-to-one accuracy ratio between the

4. Equipment Required.

Table 2 identifies the

standard and TI. When the four-to-one ratio cannot be

specific equipment used in this calibration.

The

met, the actual accuracy of the equipment selected is

equipment is issued with secondary transfer standards

shown in parenthesis.

calibration set, NSN 6695-00-621-7877. Alternate items

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

table 3 are issued as indicated in paragraph 4 above

selected must be verified to perform satisfactorily prior

except for one which is fabricated as shown in figure 1.

to use and must bear evidence of current calibration.

All are to be used in this calibration procedure. When

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

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

TUBING

Plastic, ¼ - inch (R3603F) length as required. (NSN 9330-00-071-5373).

CONNECTOR

Fabricate in accordance with figure 1.

STOPPER

Pyrex, standard taper, ground joint, 8mm dia. At large end of ground zone,

corning glass works, part no. 410981.

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).

Additional equipment required.