Delta Faucet DF-745 Manuel D’Utilisation
40 DF-745
User Interface
A relay is available on the Analog Output Setup Screen (see page 55) to signal that a zero
calibration is taking place, and the analog output signal can also be frozen or allowed to
update during the calibration process.
calibration is taking place, and the analog output signal can also be frozen or allowed to
update during the calibration process.
Figure 27: Check/Adjust Zero Screen
7.4.3.1.1 User Zero Offset
Figure 28: User Zero Offset
The User Zero Offset function enables the user to add a given moisture ppb value to the
displayed concentration. This can be useful in preventing negative readings to be displayed
should the baseline drift below the calibrated zero point. The value does not affect zero
calibration, it is simply added to the calibrated zero. For example, an offset of 1.0 ppb
could be put into a system reading 0.0 ppb to allow a chart recorder attached to the output
to read slightly above zero. Under this condition, the moisture reading would be 1.0 ppb.
displayed concentration. This can be useful in preventing negative readings to be displayed
should the baseline drift below the calibrated zero point. The value does not affect zero
calibration, it is simply added to the calibrated zero. For example, an offset of 1.0 ppb
could be put into a system reading 0.0 ppb to allow a chart recorder attached to the output
to read slightly above zero. Under this condition, the moisture reading would be 1.0 ppb.
Use the arrow keys (
and
to highlight Enter User Zero Offset in the Check/Adjust
Zero screen, Figure 27, hit the Enter key on the front panel, and the zero offset box will
appear on the screen as shown in Figure 28. With the left and right arrow keys move the
cursor to the right of the digit you want to change. With the up and down arrow keys set
the number to the desired value. When done hit the Enter key which will move the
highlighted area to the Apply button and hit Enter to set the value. Use the Next key to go
appear on the screen as shown in Figure 28. With the left and right arrow keys move the
cursor to the right of the digit you want to change. With the up and down arrow keys set
the number to the desired value. When done hit the Enter key which will move the
highlighted area to the Apply button and hit Enter to set the value. Use the Next key to go