User Guide

1
PRELIMINARY EXAMINATION
Remove the instrument from the packing ma-
terial and examine it to make sure that no
damage has occurred during shipping. If there
is any damage, notify your Dealer.
Each bench D.O. meter HI964400 comes
supplied complete with:
• HI 76407/2 D.O. probe with 2 m (6.7')
cable
• HI 76407A membrane cap (2 pcs)
• HI 7041S electrolyte solution (30 ml)
• 12 VDC power adapter (HI 710005 or
HI 710006)
• dust cover.
Note: Save all packing material until you are
sure that the instrument functions cor-
rectly. All defective items must be re-
turned in the original packing with the
supplied accessories.
GENERAL DESCRIPTION
HI 964400 is a bench microprocessor-based,
logging meter for Dissolved Oxygen measure-
ments.
It can store in memory up to 99 lots with up
to 8,000 readings. These readings can be
transferred to a computer system for elabora-
tion or permanent storage.
Dissolved oxygen is indicated in ppm (parts
per million) or in %.
Temperature is compensated for by the meter's
ATC circuitry. Salinity compensation in water
allows direct determination of dissolved oxy-
gen in saline waters and the altitude compen-
sation readjusts for the altitude variance.