Hanna Instruments HI 2550 User Manual

Page 3

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GENERAL DESCRIPTION

The HI 2550 is a microprocessor based pH, ORP, Conductivity (EC), TDS,

NaCl, and Temperature Bench Meter. Relative mV feature is also

provided.
pH measurements are compensated for temperature effect manually or

automatically with the HI 7662 temperature probe.
Up to a five-point pH calibration can be performed using seven standard

buffers and two custom buffers.
A calibration due alarm can be set to alert the user that too much time

has elapsed since the last pH calibration.
Conductivity and TDS features auto-ranging, which automatically selects

the scale with the highest resolution. Conductivity measurements are

compensated for temperature manually or automatically with a

temperature sensor located inside the probe. The temperature coefficient

is user selectable. Temperature compensation can be disabled to measure

actual conductivity.
The GLP feature provides data consistency.
Data can be stored in the meters memory for later retrieval. The meters

memory can hold 200 manually logged points and 500 lot logging

points.
An USB connection ensures communication with a PC.

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 76310 Conductivity / TDS probe
• HI 7662 Temperature Probe
• HI 76404N Electrode Holder
• pH 4.01 & 7.01 Buffer Solutions (20 mL each)
• HI 7071 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.

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