Table 4. Pressure Gage Performance Limits

TB 3-6665-314-50

Scale major Division Indication

Acceptable Manometer Indications

(inches of water

Min.

Max.

4.5

5.5

9.5

10.5

14.5

15.5

19.5

20.5

24.5

25.5

8. PRESSURE Gage. a. Performance Check.

CAUTION

(1)

Connect the test equipment as shown

Since a sudden change in pressure

in figure 3.

could damage the TI, do not

(2)

Close valve (B1).

disconnect the equipment before

(3)

Slowly turn BLEED VALVE clockwise

returning the TI to atmospheric

until the PRESSURE gage pointer is at "5" on the scale.

pressure.

The manometer (Al) must indicate as shown in table 4.

(4)

Repeat (3) above for each major

(5)

After the performance is completed,

division, (cardinal point) in the PRESSURE gage scale.

slowly open the BLEED VALVE to return the TI to

atmospheric pressure.

b. Adjustments. No adjustments can be made.

Figure 3. PRESSURE gage performance check, equipment setup.

the TI does not indicate within the limits specified in

9. Final Procedure. a. Deenergize and disconnect all

Table 4, annotate and affix DA Form 2417

equipment.

(Unserviceable or Limited Use) tag.

b. In accordance with TM 38-750, annotate and

affix DA Label 80 (US Army Calibration System). When

By Order of the Secretary of the Army:

BERNARD W. ROGERS

General, United States Army

Chief of Staff

Official:

PAUL T. SMITH

Major General, United States Army

The Adjutant General

DISTRIBUTION:

To be distributed in accordance with DA Form 12-34A, Requirements for Calibration Procedures Publications.

*U.S. GOVERNMENT PRINTING OFFICE: 1977-765010/534