89
L
i C
l
Li Cl
11.1%
Na Cl
75.4%
CALIBRATION KIT
All Hanna hygrometers have been precalibrated at the factory.
Hanna Instruments uses state-of-the-art thermal humidity chambers
for this purpose.
It is generally recommended to have all hygrometers recalibrated at
least once a year.
For an accurate annual recalibration, contact your nearest Hanna
Service Center.
You can also check the status of your hygrometer and perform a quick
RH recalibration (with an accuracy of ±5%) by using the Hanna
mini-calibration chamber HI7101.
The kit is composed of two thermally isolated
chambers, each one equipped with a threaded
cap and three bottles containing the appropri-
ate precalibrated saturated salts to produce a
known RH value.
PREPARING THE CALIBRATION SOLUTIONS:
• Pour approximately 26 cc of distilled water into
a glass container.
• Immerse this container into a bath of ice and water and shake
briefly.
• Slowly add the contents of a HI7111 bottle
containing LiCl into the glass container while
continuing to shake.
• When the salts have dissolved completely, add
all the content of the second bottle of HI7111.
• Allow the solution to cool, and pour it into
the chamber marked "RH11.1%", making
sure that no residue remains on the walls
of the glass container.
L
i C
l
11
.1
%
N
a
C
l
7
5
.4
%
C
A
LIB
R
A
T
IO
N
K
IT
H
2
O
26 cc
L
i C
l
CALIBRATIONCALIBRATION
CALIBRATIONCALIBRATION
CALIBRATION
°C
°C
°F
TEMPERATURE MEASUREMENTS (FOR HI9065 ONLY)
Connect the HI 765N temperature probe into the socket placed on the
top of the meter (refer to #9 in the Functional Description, page 4)
and the unit will automatically display the readings from the tempera-
ture probe.
For special applications, you can choose in a wide range of separate
temperature probes (see Accessories at page 13).
Note: HI 9065 has to be used with just one probe (RH or tempera-
ture) at a time.
By pressing the °C key "°C" is displayed with temperature value in
degrees Centigrade.
The same reading in degrees Fahrenheit it would read if you press the
°F key.
If you experience any problems in taking measurements, please con-
tact your dealer or the nearest Hanna Instruments Customer Service
Department.
HOLD FUNCTION (HI 9064 AND HI 9065 ONLY):
The reading HOLD function is activated by the HOLD
key. The measured value is frozen on the display
when this function key is pressed. "S" is displayed
indicating that the reading is stored.
By pressing the same key again, the meter re-
sumes its operational mode.
LCD DISPLAY CODES (HI 9064 AND HI 9065 ONLY):
°C indicates Temperature readings in degrees Centigrade (HI9065
only)
H to indicate Relative Humidity readings
S to indicate that reading has been stored
HOLD
S
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