Hanna Instruments HI 943500A - Manual (Page 19)

37 36
• Pour at least 8 cm (3¼") of conductiv-
ity solution into a plastic beaker.
• Immerse the probe into the conductivity
solution. The holes on the sleeve must
be completely submerged in the solu-
tion.
• Tap the probe repeatedly on the bottom of the beaker and stir it
to ensure that no air bubbles remain trapped inside the sleeve.
• If the temperature of the probe is close to that of the solution, the
display of HI 8931 will stabilize quickly and provide a temperature
compensated conductivity measurement. Allow a few minutes if
there is a temperature difference of about 5°C (9°F) or more for the
ATC circuitry to compensate completely.
• For HI 8936
Adjust the SLOPE trimmer of the HI 8936 transmitter to read on
the ammeter:
"10.4 mA" using HI 7034 and HI 8936 A/AL
"14.304 mA" using HI 7030 and HI 8936 B/BL
"15.304 mA" using HI 7031 and HI 8936 C/CL
"10.72 mA" using HI 7033 and HI 8936 D/DL
8 cm (3¼")
HI 7030 • Leave the HI 7638 conductivity probe
in air (dry probe).
• When the power is on, the ammeter should read "4.0 mA" or the
HI 8936 transmitter with LCD should display "0".
• If not, adjust the HI 8936 OFF-
SET trimmer to obtain "4 mA" or
"0" on the HI 8936L.
• The HI 8931 controller should dis-
play "0".
• If not, adjust the HI 8931 OFF-
SET trimmer to display a zero
reading.