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. Some of the accessories
may be used by the calibrating activity when the
equipment listed in table 2 is not available. The items
above, except for the one which is fabricated as shown
selected must be verified to perform satisfactorily prior
in figure 1. All are to be used in this calibration
procedure. When necessary, the items other than the
The equipment must meet or exceed the minimum use
one fabricated may be substituted by equivalent items.
specifications listed in table 2. The accuracies listed in
Figure 1. Fabrication instructions for connector (B1).
Table 2. Minimum Specifications of Equipment Required
Minimum Use
Manufacturer, Model,
Item
Common Name
Specifications
and Part Number
A1
FLOWMETER *
Range: 3.5 cu ft/min
Shutte and Koerting, Model 18200
Accuracy: 0.5% of reading ( 2% of full scale) Series (7920950)
Tube - H-CFB
Float - 4-BP-1
A2
MANOMETER
Range: 0 to 4 in. of water
Wallace and Tiernan, Model 65D-
Accuracy: 0.5%
4C-0120X or FA145600
(7912573)
*Procedure limitations: Accuracy 2% of full scale.
2
