Figure 1. Depth gage - equipment setup

TB 9-4220-215-35

a. Connect equipment as shown in figure 1.

Figure 1. Depth gage - equipment setup.

WARNING

To prevent injury to personnel or damage to equipment, make

certain that all components are within the range of the unit to

be calibrated and all connections are securely sealed prior to

applying pressure to TI. Never attempt to tighten connections

with pressure applied.

b. Position controls on pneumatic pressure standard as indicated in (1) through (7)

below:

(1) Set POWER switch to ON and allow 1 minute for warm-up.

(2) Press SOURCE pushbutton to INT.

(3) Press UNITS DISPLAYED pushbutton to PSIA.

(4) Press RANGE pushbutton to 0-250.

(5) Press SENSITIVITY pushbutton to HIGH.

(6) Press RESET pushbutton.

(7) Press ZERO pushbutton.

c. Adjust regulator fully ccw.

d. Open nitrogen tank valve and adjust regulator until output gage indicates 210 psi.