User Guide

PRELIMINARY EXAMINATION

GENERAL DESCRIPTION

The soil activity, the conductivity of nutritive solutions, irrigation water

and saturated soil-paste are important parameters for growers and

horticulturists.

With HI 993310 it is possible to directly measure, in a quick and simple

way, the soil activity in the ground as well as the conductivity of irrigation

water, nutritive solutions and saturated soil-paste.

The meter is supplied with two probes: HI 76305 with stainless steel conic

tip for direct soil measurements, and HI 76304 for fertilizer enriched

solutions.

The meter allows readings in two different scales and is provided with two

LED’s for indicating which parameter is being tested.

HI 993310 is also equipped with an alarm LED that automatically lights

up if the soil is too dry, or nutritive substances are lacking.

Calibration for conductivity measurements can be performed with a simple

knob located on the front of the meter, and, since the conductivity and

the soil activity are correlated parameters, the soil activity measurements

are calibrated through the conductivity calibration.

Conductivity measurements are influenced by temperature, while the soil

activity depends on the soil texture and its hydric property; both the

supplied probes incorporate a temperature sensor which allows the meter

to automatically compensate for the temperature variations.

HI 993310 comes in a rugged splashproof case suitable to outdoor

measurements.

Remove the instrument from the packing material and examine it

carefully to make sure that no damage has occurred during shipping.

If there is any noticeable damage, notify your Dealer or the nearest

Hanna office immediately.

The meter is supplied with:

• HI 76304 plastic body, conductivity probe with built-in tempera-

ture sensor and 1 m (3.3’) cable

• HI 76305 probe for direct soil measurements with stainless steel

conic tip, built-in temperature sensor and 1 m (3.3’) cable

• one 9V battery & Instruction manual

Note: Save all packing materials until you are sure that the

instrument functions correctly. Any damaged or defective item

must be returned in its original packing materials together

with the supplied accessories.