Myron L PS9TK - Manual (Page 68)

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variables used in the calculation to analyze the effect of the change on
water balance.
The LSI titration function generates an accurate saturation index value
that indicates the state of the system at the time the calculation is
made.
C. Hardness Units
nOTE: The PS9 MUST be in the HARDNESS FUNCTION or the
hardness screen (“hrd”) in LSI CALCULATOR or LSI TITRATION
mode for hardness unit preference selection.
The hardness unit preference is set simultaneously for all three
functions that capture a hardness value. That means when you set the
preference in one function, it is set for the other two functions at the
same time.
The LSI Calculator allows you to select either ppm or grains of
hardness units.
The hardness unit conversion is based on the following equivalency:
17.1 ppm (mg/L) = 1 grain
XXiv. SOFTwaRE vERSiOn
Contact the Myron L Company to see if a software upgrade is available.
1. Press any parameter key.
2. Press key until three numbers are displayed as shown
in Figure 30.
3. Press any parameter key; instrument will time out in ~15
seconds.
Figure 30