4
The
HI 95706
is an auto diagnostic portable microprocessor meter that benefits from
HANNA
’s
years of experience as a manufacturer of analytical instruments. It has the advanced optical system
based on a special tungsten lamp and a narrow band interference filter that allows most accurate and
repeatable readings. All instruments are factory calibrated and the electronic and optical design
minimizes the need of frequent calibration.
With the powerful CAL CHECK™
validation
function you are able to validate good performance of
your instrument at any time. The validation procedure is extremely user friendly. Just use the exclusive
HANNA
ready-made, NIST traceable standards to verify the performance of the instrument and
recalibrate if necessary.
All instruments are splash waterproof and the lamp and filter units are protected from dust or dirt
by a transparent cup. This makes the instruments fulfill field applications. Display codes aid the user
in routine operation. The meter has an auto-shut off feature that will turn off the instrument after
10 minutes of non use or after 1 hour if left in the
calibration mode
.
The meter uses an exclusive positive-locking system to ensure that the cuvet is in the same position
every time it is placed into the measurement cell. It is designed to fit a cuvet with a larger neck
making it easier to add both sample and reagents. The cuvet is made from special optical glass to
obtain best results.
The
HI 95706
meter measures the phosphorus (P) content in water samples in the 0.0 to 15.0 mg/L
(ppm) range. The method is an adaptation from
Standard Method for the Examination of Water and
Wastewater
.
The reagents are in
powder and liquid form and are supplied in packets and bottles. The amount of
reagent is precisely dosed to ensure the maximum repeatability.
degree Celsius
degree Fahrenheit
milligrams per liter. mg/L is equivalent to ppm (part per million)
milliliter
°C
:
°F
:
mg/L
:
mL
:
GENERAL DESCRIPTION
ABBREVIATIONS
17
or
• Press READ/TIMER and “SIP” will blink during
measurement.
• The instrument will show for three seconds the
CAL CHECK™ standard value.
Then the date of last calibration (e.g.: “01.08”)
appears on the display, or “01.01” if the factory
calibration was selected. In both cases the
number of the month is blinking, ready for
date input.
Note
: if the display shows “ERR” the calibration
procedure failed. Verify that the CAL CHECK™
Standards HI 95706-11 Cuvets,
A
and
B
, are
free from fingerprints or dirt and that they are
inserted correctly.
DATE INPUT
• Keep READ/TIMER pressed to scroll to the
desired month number (01-12).
• When the correct month has been set, press
ZERO to confirm. Now the display will show the
day number blinking. Keep READ/TIMER pressed
to scroll to the desired day number (01-31).
Note
: it is possible to change from
day
to
month
and vice versa by pressing ZERO.
• When both the day and month have been
selected, hold CAL CHECK
for three seconds
to
store date and calibration values. The instrument
will show for one second “Stor”, to confirm
that the new calibration data has been accepted.
• The instrument will return automatically to the
measurement mode by displaying "706" on
the LCD.
