TB 9-6625-157-40
(13) Compare TI VAC indication to vacuum standard readout indication. TI and
vacuum standard readout will agree within 10% of reading or 0.1 Pa, whichever is greater.
If not, perform b below.
b. Adjustments
(1) Calculate and record the difference between TI VAC indication and vacuum
standard readout using formula below:
Vacuum standard readout [Pa] VAC [Pa] = Ćvac [Pa]
(2) Record the current value of the VA (vacuum adder) from the TI display (fig. 5).
(3) Calculate the new VA by algebraically adding the Ćvac to the current VA:
Current VA [Pa] + Ćvac [Pa] = New VA [Pa]
(4) Adjust VA by pressing TI keys as listed in (a) through (f) below. (R)
[ESCAPE]
(a)
<2cal>
(b)
Using key pad, input new VA.
(c)
[ENTER]
(d)
[ENTER]
(e)
<2yes>
(f)
(5) Repeat paragraph 11 a.
(6) Deenergize vacuum pump, vent system and disconnect equipment set-up.
12. Piston Cylinder Temperature
a. Performance Check
(1) Place mass set in the load all configuration as listed in (a) through (e) below:
(a) [SPECIAL]
(b) <8AMH>
(c) <2control>
(d) <3loadall>
(e) [ENTER]
(2) Remove the automatic mass handler, mass set, and piston cylinder module from
the TI.
(3) Install the PRT Insertion Plug, or similar device, into the TI mounting post.
(4) Connect the thermometer to the thermometer readout.
NOTE
Platinum resistance thermometers are very delicate. They
should be gently inserted. Do not allow probe tip to strike the
bottom of the mounting post opening.
(5) Insert thermometer through the PRT insertion plug approximately 1 inch into
the mounting post opening until the thermometer stops without striking the bottom.
