Myron L PS9TK User Manual

Page 32

standard’s value (7032 > 7000) or hold a key down to scroll

rapidly through the reading.

Press

once to confirm new value and end the calibration

sequence for this particular solution type. If another solution

type is also to be measured, change solution type now and

repeat this procedure.

2. Reloading Factory Calibration (Cond, MIN/SALT

or TDS)

If calibration is suspect or known to be incorrect, and no standard solution

is available, the calibration value can be replaced with the original factory

value for that solution. This “FAC” value is the same for all P

OOL

and returns you to a known state without solution in the cell. The “FAC”

internal electronics calibration (which bypasses the electrodes and cell)

is not intended to replace calibration with conductivity/TDS standard

solutions. If another solution type requires resetting, change solution

type and repeat this procedure.

Press

MIN

SALT

Press

. (If in “user” solution mode — press caL key

twice if in Conductivity, and three times if in TDS to skip over

tempco and ratio adjustments.)

Press

key until “Fac” appears and release.

Press

to accept the factory calibration setting.

3. Alkalinity Calibration

Prepare the materials required for titration: Alkalinity Standard Solution

100PPM, 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.