Myron L PS9TK - Manual (Page 18)

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b. Hold
When the display says to hold (“hOLd”):
Hold the instrument steady in the horizontal
position while the instrument records a
measurement. Agitate and hold as many times
as prompted. Allow the display to cycle through
all screens, e.g., “EdTa”, “agit” and “hOLd”, at
least once. Continue holding steady until “P
r
ES
caL” displays.
Hold the PS9 steady before pressing caL to accept readings.
C. Measuring Conductivity Mineral/Salt Concentration &
Total Dissolved Solids (TDS)
1. Rinse cell cup 3 times with sample to be measured. (This
conditions the temperature compensation network and prepares
the cell.)
2. Refill cell cup with sample.
3. Press ,
MIN
SALT
or .
4. Take reading. A display of [- - - -] indicates an overrange
condition.
D. Measuring Alkalinity
Prepare the materials required for titration: Reagent: A1, cell extender,
T-plunger, and 100 µL pipette with a clean tip installed.
nOTE: If you do not complete each titration point within the 3-minute
timeout period, the PS9 exits the Alkalinity function. Between titrations,
the PS9 will automatically power off after the period of inactivity defined
in the AUTO OFF setting (ref. AUTO OFF, pg. 43). Press aLK to start the
titration process over from step 1.
If you make a gross error in your titration method, e.g., you forget to add
sample to the cell, “Err” will display. Start the titration over from Step 1
to obtain a reading.
1. Ensure pH protective cap is secure to avoid contamination.
2. Install the cell extender by pushing the base of the cell extender
into the conductivity cell until it is fully seated.
3. Rinse the conductivity cell cup and cell extender 3 times with
solution to be measured.
“hOLd”: When “hOLd”
displays, hold the PS9
still with bottom of case
parallel to the ground.