Myron L 6Psi and 4P - Manual (Page 58)

C. hardness Unit Preference Selection
The LSI Calculator allows you to select either ppm or grains of
hardness units for saturation index calculation.
The hardness unit conversion is based on the following equivalency:
17.1 ppm (mg/L) = 1 grain
The hardness range is limited to 0.0 - 1710 ppm and 0.0 - 100 grains
of hardness in the 6Psi.
NOTE: The 6Psi MUST be in the
hardness screen (hrd) in LSI
Calculator mode or LSI Calculator
“User” mode for hardness unit
preference selection.
By default, hardness unit preference
is set to ppm (see Figure 51).
1. While in the hrd screen in
CALC LSI or LSI Adj mode,
press and hold the
key. hArd SEL will display
along with the current unit
preference (see Figure 52).
2. Press or to
toggle between ppm and
grains of hardness. No unit
icon is lit when grains is
selected (see Figure 53).
3. Press to accept the
change. The LSI calculator
will resume in the hrd
screen. The unit change
will be reflected on the
display (see Figure 54).
Figure 51
PPM
PPM
Figure 52
Figure 53
Figure 54
54