Vaisala PTB220 Series Guide de l'utilisateur télécharger pdf (Page 65)

CHAPTER 7__________________________________________________ADJUSTMENT AND CALIBRATION

VAISALA _________________________________________________________________________ 59

LC Linear corrections

LC x <cr>

where:

x = ON or OFF

The LC command is used to activate or deactivate the linear offset or

offset/gain corrections.

The linear corrections are protected with switch SW4 (see FIGURE 7-1).

The switch SW4 is normally in write DISABLE position (OFF) and

the user must change it to write ENABLE position (ON) to be able to

turn the linear corrections on or off.

NOTE

Changing the linear corrections on or off will automatically cancel the

valid date of calibration of the barometer (see CALD Storing the new

date of calibration command).

The listing varies according to the number of transducers in the

barometer (see CORR Listing linear and multipoint corrections).

Example of linear adjustments performed on a barometer with two

transducers:

>lc off <cr>

Linear adj. : OFF

>lc on <cr>

Linear adj. : ON

Reading Correction Reading Correction

1013.250 -0.100 800.000 0.050

1013.250 -0.100 1000.000 -0.020

NOTE

Always remember to return the switch SW4 to write DISABLE

position (OFF).

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Vaisala PTB220 Series Guide de l'utilisateur Page 65