Hanna Instruments HI 2221 User Manual

Page 3

PRELIMINARY EXAMINATION

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 Customer Service Center.
Each instrument is supplied complete with:

• HI 1131P Glass-body Combination pH Electrode with 1 m (3.3 “)

cable

• HI 7662 Temperature Probe
• HI 76404N Electrode Holder
• pH 4.01 & 7.01 Buffer Solutions (20 mL each)
• HI 7071 Electrolyte Solution
• 12 VDC Power Adapter
• Instruction Manual

Note: Save all packing material until you are sure that the instrument

functions correctly. All defective items must be returned in the
original packing with the supplied accessories.

HI 2221 and HI 2223 are logging microprocessor-based pH/ORP/
temperature bench meters with Calibration Check.
Calibration Check performs a set of diagnostic tests during calibration
using the history of electrode slope and offset to detect problems that can
cause loss of accuracy.
Calibration Check Features are:

• Enhanced Calibration Messages

During calibration the user is warned if one or more parameters are not suitable
to perform an accurate calibration.

• Electrode Condition on LCD Display

Determined from the electrode offset and slope.

• Electrode response time on LCD Display

Determined from electrode performance during calibration.

Other features include: up to five pH point calibration with
seven memorized buffers (1.68, 4.01, 6.86, 7.01, 9.18, 10.01 and
12.45 pH), logging up to 100 samples (for HI 2221) and 500 samples
(for HI 2223), GLP, calibration due alarm, pH reading with manual or
automatic temperature compensation and PC software interface.

GENERAL DESCRIPTION

This manual is related to the following products:

HI 2223