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GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTIONGENERAL DESCRIPTION
GENERAL DESCRIPTION
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 meters are supplied complete with:
• HI 1131B Glass-body Combination pH Electrode
• HI 7662-T Temperature probe
• pH 4.01 & 7.01 Buffer solutions, 20 mL each
• HI 700661 Cleaning Solution, 2 x 20 mL
• HI 7071S Electrolyte solution
• HI 76404N Electrode Holder
• 12Vdc Power Adapter
• Instruction Manual
HI 4221 and HI 4222 are supplied with 12 Vdc/230 Vac adapter.
HI 4221-01 and HI 4222-01 are 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.
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATIONPRELIMINARY EXAMINATION
PRELIMINARY EXAMINATION
HI 4221 and HI 4222 are professional bench meters with color graphic LCD for pH, ORP (Oxidation Reduction
Potential), ISE (HI 4222 only) and Temperature measurements with Calibration Check.
The display can be configured as a single channel or dual channel display (HI 4222 only) in various modes: Basic
information only, GLP information, Graph mode and Log History mode. Each channel can be configured as pH, mV,
Relative mV or ISE (HI 4222 only).
The main features of the instruments are:
• One (HI 4221), or two (HI 4222) input channels;
• Manual selection, automatic and semiautomatic pH calibration up to five points, with standard (1.68, 3.00,
4.01, 6.86, 7.01, 9.18, 10.01 and 12.45) and custom buffers (up to 5 custom buffers);
• Manual Selection and Custom Standard ISE calibration up to five points, with standard (0.1, 1, 10, 100,
1000 ppm) and custom solutions (up to 5 custom solutions), with or without temperature compensation;
• AutoHold feature to freeze first stable reading on the LCD;
• Two selectable alarm limits;
• Five selectable logging modes: Automatic logging with and without AutoHold feature, Manual logging with
or without AutoHold and AutoHold logging mode;
• Up to 100 logging lots;
• Selectable log interval and log sampling features for Automatic logging;
• GLP feature;
• Online and offline graph;
• User-friendly interface on large color graphic LCD (240x320 pixels);
• PC interface via RS232, and USB.