Hanna Instruments HI 4321 User Manual

Page 4

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 damage, notify your dealer or the nearest Hanna Service Center.
The meter is supplied complete with:

• HI 76312 Four-ring Conductivity Probe with built-in temperature sensor and ID
• HI 76404N Electrode Holder
• 12Vdc Power Adapter
• Instruction Manual

HI 4321 is supplied with 12 Vdc/230 Vac adapter.
HI 4321-01 is supplied with 12 Vdc/115 Vac adapter.

Note: Save all packing material until you are sure that the instrument works properly. Any defective item

must be returned in the original packing with the supplied accessories.

HI 4321 is a professional bench meter with color graphic LCD for conductivity, resistivity, TDS, salinity and

temperature measurements.

The display viewing modes are: Basic information only, GLP information, Graph and Log History mode.

The main features of the instruments are:

• One input channel;

• Five measurement parameters: conductivity, resistivity, TDS, salinity and temperature;

• Pure water checking using the USP <645> standard;

• Automatic or custom standard conductivity calibration in up to four points, probe offset calibration;

• One fixed point salinity calibration (Percent Scale only);

• AutoHold feature to freeze the stable reading on the LCD;

• Two selectable alarm limits (for conductivity, resistivity, TDS, salinity);

• Three selectable logging modes: Automatic logging, Log on demand (manual logging) and AutoHold logging

mode;

• Up to 100 logging lots for automatic or manual modes and up to 200 USP reports;

• Selectable area and settable sampling period feature for automatic logging;

• GLP feature;

• Online and offline graph;

• User-friendly interface on large color graphic LCD (240x320 pixels);
• Opto-isolated PC interface via RS232 respectively USB.

PRELIMINARY EXAMINATION

GENERAL DESCRIPTION