Delta NANOTRACE DF-745 Instruction Manual download pdf (Page 42)

38 DF-745 User Interface

Figure 23: Isolate Warning

While the moisture cell is isolated from gas flow, a warning will appear at the bottom of the

main display indicating “Isolated”.

7.4.2 Restore Sample Gas Flow – Optional

Figure 24: Restore Sample Gas Flow

This command allows the user to return the analyzer gas flow to normal after isolation.

7.4.3 Calibrate Menu

“Calibration” of the moisture analyzer is somewhat of a misnomer. Because of the nature

of absorption measurements, instrumental drift has minimal effect on the quantitative

moisture content result. Once operating parameters are in place from the factory, no other

SPAN “calibration” is necessary.

However, line contributions to offsets in ppb measurements, especially at the sub-ppb level,

are difficult to remove even with a correctly operating system. The moisture analyzer has an

array of zeroing features that enable the user to establish performance near 0.0 ppb.

Any zero action whether completed or aborted is recorded in the Zero Cal Log as shown

in Figure 40.

Use the arrow keys ( and  to scroll up and down through the list. Pressing ESC will

return to the main display.

1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 97 98

No comments

Delta NANOTRACE DF-745 Instruction Manual Page 42