Справочник Пользователя для Hanna Instruments hi 993310

OPERATIONAL GUIDE

• Each meter is supplied complete with a 9V battery. Slide off the

battery compartment cover on the back of the meter and install
the battery while paying attention to its polarity.

• Connect the proper probe to the meter: use HI 76305 for

measuring soil activity or HI 76304 for conductivity.

• Securely connect the probe to the meter

by aligning the pins with the socket and
pushing the plug in. Always detach the
probe by holding it by the connector
(and not by the cable).

• Make sure the meter has been calibrated before taking any

measurements.

• Immerse the conductivity probe into the

sample to be measured (approximately
5 cm/2"). If possible, use plastic beakers
or containers to minimize EMC interfer-
ences.

• For soil activity measurements, directly insert the stainless steel

probe in the soil to a depth of 15 cm (6").

• Turn the instrument on by pressing the

ON/OFF key.

• Press "W" if using conductivity probe for,

or "S" if using soil probe.

Note: Change the probe for taking different type of measurement.

• For Water Conductivity range, wait a couple of minutes for

reaching thermal equilibrium before taking any measurements.
If the sample's temperature is lower than 20°C or higher than
30°C, allow more time for the thermal equilibrium to be achieved.

• The meter provides for a LED alarm when measuring soil activity.

If the LED lights up, the soil is too dry for a proper measurement
or it lacks nutritive substances.
Wet the soil with a moderate quantity of demineralized water
and carry out the measurement again. If the alarm LED lights
up, the soil lacks nutritive elements.