Hanna Instruments HI 250 - Manual (Page 3)

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 with:
• HI 1131B Glass-body Combination pH Electrode with 1 m (3.3') Cable
• HI 7669/2W Temperature Probe
• HI 76404 Electrode Holder
• pH 4.01 & 7.01 Buffer Solutions (20mL each)
• HI 7071S Electrolyte Solution
• 12VDC 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.
The HANNA HI 250 and HI 251 are logging microprocessor-based pH and
temperature bench meters.
HI 251 can also measure Oxidation-Reduction Potential (ORP) in mV range.
Relative mV feature is also provided.
pH measurements are compensated for temperature effect manually or
automatically with the HI 7669/2W temperature probe.
One, two or three-point calibration is possible, using five memorized buffers
(4.01, 6.86, 7.01, 9.18 and 10.01 pH).
The GLP feature provides a guarantee of data consistency.
An alarm time-out is available to alert the user that too much time elapsed
since the last pH calibration.
The instruments can store data in memory at the user’s request for later
retrieval.
Hanna Instruments reserves the right to modify the design, construction
and appearance of its products without advance notice.
GENERAL DESCRIPTION