Crystal XP2i 2nd Generation Manuel d'utilisateur télécharger pdf (Page 5)

Functions  3

XP2i Operation Manual

Functions

Units Button

Pressing this button causes the XP2i to select the next available unit of pressure measurement. See Pressure Ranges, Display Scales, & Resolution for the list

of pressure units available for your model.

Units that you don’t need or never use can be turned oﬀ. You can also deﬁne a special unit for your XP2i with ConﬁgXP. You

can use the XP2i to display directly in a unit not otherwise available, such as feet of seawater, or foot-pounds of torque. When your custom unit is selected and

displayed on the XP2i, all pressure unit icons will be oﬀ.

Zero

To zero the XP2i you must turn o peak indication, then press the (zero) button for at least ½ second. To zero a dual-line display XP2i you must turn o display of

peak or TARE values (press the peak button until second line is blank, or displaying average or rate), then press the

(zero) button for at least ½ second.

The display will then brieﬂy ﬂash all dashed lines (- - - - -), indicating that it has been re-zeroed. If you attempt to zero the gauge while more than 200 PSI is

applied (or the pressure limit set with ConﬁgXP), the command will be ignored, and “- -HI-” will be displayed.

WARNING: This gauge can display zero pressure when connected to a source of pressure! Do not rely on the display indication before disconnecting—

it may not be indicating true pressure. Never disconnect pressure instrumentation without rst relieving system pressure!

To clear the Zero Value on an XP2i turn oﬀ peak indication then press and hold the

(zero) button until the display changes from (- - - - -) to (- - -).

To clear the Zero Value on a dual-line XP2i turn oﬀ display of peak or TARE values (press the peak button until second line is blank, or displaying average or

rate), then press and hold the

(zero) button until the display changes from (- - - - -) to (- - -).

This is especially useful for absolute gauges that have been zeroed while measuring barometric pressure.

PSI inH

O inHg kpa

mmHg mmH

O mbar kgf/cm

PSI inH

O inHg kpa

mmHg mmH

O mbar kgf/cm

Zeroed Clear Zero (Unzero)

You can change the point at which the Zero button will display “- -HI-”. For instance, you could set the maximum zero to 3000

PSI, if you need to mix high pressure gases. You can also disable the zero button entirely, by setting the Zero value to a large negative number.

On an XP2i the

(zero) button changes its function when the peak high (

) or the peak low (

) icon is displayed. While a peak icon is displayed the

(zero) button becomes the (clear) button.

On a dual-line XP2i the

(zero) button changes its function depending on what is being displayed on the second line.

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Crystal XP2i 2nd Generation Manuel d'utilisateur Page 5

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