User Guide

PROCEDURE FOR HI 9039

• Fill a beaker with 8 cm (3¼") of HI 7039

or HI 8039 conductivity calibration solu-

tion at 5000 µS/cm @25°C (if possible

fill two beakers and use one as rinse and

the other for calibration).

• Make sure that the probe is connected to

the meter securely by aligning the pins

with the socket, pushing the plug in and

tightening the threaded ring.

• Immerse the probe into the beaker. The

level of solution must be higher than the

holes on the PVC sleeve.

• Turn the instrument on by pressing ON/OFF and select the

conductivity measurement mode by pressing RANGE.

• Tap the probe repeatedly on the bottom of the beaker and stir it

to ensure that no air bubbles are trapped inside the sleeve.

• Press CAL to display "5000 µS" together with the "CAL" symbol

and an intermittent "BUF" indicator.

•If the reading is within 15% of the theoretical value, the meter

automatically recognizes the standard solution and the "BUF"

symbol will stop flashing.

•"

" will disappear from the display

when the reading is stable and the

"CON" symbol will start blinking.

•Press CFM to confirm the calibration reading.

Calibration is now complete and the instrument is

ready for use. All subsequent measurements will

now be compensated to 25°C (77°F). If the

instrument cannot be calibrated refer to the

Probe Maintenance section (page 30).

Press CAL to quit the calibration mode.

RANGE

ON/OFF

CAL

BUF

µS

°C

CAL

CON

°C

µS

CFM

CAL