How To Measure - DeFelsko PosiTector SST Manuel De Demarrage Rapide

How To Measure

Test Preparation:
Use deionized (DI) water to thoroughly clean the PosiTector SST
test cell, test cup, syringe and PosiPatch (if used in test).
All test materials should be handled in a manner that minimizes
the potential for contamination. The PosiTector SST operator may
choose to wear nitrile or other non-contaminating gloves when
performing the test.
Remove the protective rubber cap from the probe. Power-up the
Gage by pressing the center navigation button.
In the default Bresle Mode, the Gage guides you through three
simple steps – [ 1 ] , [ 2 ] , and [ 3 ] .
Step [ 1 ] : Obtain Background (Blank) Conductivity Measurement (
γ
1 )
NOTE: The Gage automatically displays the previous background
measurement, if any. This measurement can be reused and step
(c) to step (e) can be skipped by pressing the (-) button.
a) Pour at least 4ml (milliliters) of deionized (DI) water into the
supplied cup (to prevent contamination of the water source).
b) Fill the syringe completely with DI water from the cup (slightly
more than 3ml).
c) Completely fill the PosiTector SST probe's test cell with water
from the syringe (approximately 1ml).
d) Wait until the measurement stabilizes (up to 5 seconds),
then press the (+) button to save a new background conductivity
γ
measurement ( 1 ) and the water temperature (T 1 ).
e) Use the syringe to draw all of the water from the test cell.
Shake any remaining water out of the test cell.
f) With the syringe pointing up, expel the air and excess solution
from the syringe until there is 3.0ml of DI water remaining.
3