Hanna Instruments HI 93640N User manual

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Instruction Manual
HI93640N
Portable
Thermohygrometer
www.hannainst.com

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PRELIMINARY EXAMINATION
DearCustomer,
ThankyouforchoosingaHANNAproduct.
Please read this instruction manual carefully
beforeusingtheinstrument.
For additional technical information, do not
hesitatetoe-mailusat[email protected]
This instrument is in compliance with the
directives.
PRELIMINARYEXAMINATION................... 3
GENERALDESCRIPTION ......................... 3
FUNCTIONALDESCRIPTION..................... 4
SPECIFICATIONS...................................... 5
OPERATIONALGUIDE .............................. 6
BATTERYREPLACEMENT ....................... 7
ERRORMESSAGES................................. 8
FACTORYRECALIBRATION ..................... 8
ACCESSORIES ......................................... 8
WARRANTY .............................................. 9
TABLEOFCONTENTS
HI93640N portable thermohygrometer provides
reading with high precision and quick response
time for both RH (Relative Humidity) and tem-
perature.
HI93640N is a compact, portable and versa-
tile instrument to monitor relative humidity
anywhere.
The built-in thin-film capacitance sensor as-
sures accurate measurements from 10 to 95%
RH with a resolution of 0.1%.
Note: The RH probe sensor must never
come into contact with water or
other liquids.
GENERAL DESCRIPTION
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.
HI93640N is supplied complete with probe
sintered cap, batteries (3 x 1.5V AA) and
instructions.
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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Range 10.0 to 95.0 % RH
0.0 to 60.0°C / 32.0 to 140.0°C
Resolution 0.1 % RH
0.1°C / 0.1°F
Accuracy ±3 % RH (50 to 85 % RH)
±4% RH (outside)
±0.5°C/±1°F
Environment 0 to 60°C (32 to 140°F);
RHmax98%non-condensing
Battery Type / Life
3 x 1.5V AA / approx. 1000 hours of use
Dimensions 190 x 80 x 36 mm
(7.5 x 3.1 x 1.4’’)
Weight 250 g (8.8 oz.)
SPECIFICATIONS
FUNCTIONALDESCRIPTION
1) Detachablesinteredcap
2) Built-inRH/temperatureprobe
3) LiquidCrystalDisplay(LCD)
4) ON/OFFkey,toturnthemeterONandOFF
5) RANGE key, to switch between %RH and
temperaturemeasurements
6) °C/°Fkey,tochangethetemperaturemea-
sureunit

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OPERATIONAL GUIDE BATTERY REPLACEMENT
Turn the meter on by pressing the ON/OFF
button.
At start-up the instrument displays all LCD
segments for a few seconds, then it shows
the current RH (Relative Humidity) mea-
surements.
The humidity sensor should be exposed to a
current of air moving at 0.5 m (20") per sec-
ond or more.
In the absence of air movement, the response
can be accelerated by moving the probe.
The probe sensor must never come into
contact with water or other liquids.
Ifthishappens,orifcondensationcausesdrops
to form on the surface of the humidity sensor,
turn the instrument off and wait until the liquid
hasevaporatedcompletely.Inordertoacceler-
atetheevaporationprocess,exposethehumid-
ity sensor to a current of air.
For a faster response, remove the sintered
cap. Whenever the probe is to be used in a
dusty or smoky environment, the cap must
be kept on at all times.
To take temperature measurements, press
the RANGE button to display the temperature
mode,thenselectthe°Cor°Fmeasureunitwith
the°C/°F button.
The meter is provided with an acoustic signal
feature activated when buttons are pressed,
which can be disabled using a switch located
inthe battery compartment(see figure onnext
page).
When the battery level is below 10%, the
battery symbol blinks on the LCD to warn the
user.
If the battery level is too low to ensure proper
operations, the Battery Error Prevention Sys-
tem (BEPS) turns the meter off. Immediately
replace the batteries with new ones.
Batteries are accessed by separating the
front and the back halves of the meter: un-
screw the 4 screws on the back of the meter
and carefully replace the three batteries, while
paying attention to their polarity.
Reattach the back making sure that the gas-
ket is in place and tighten the 4 screws to
ensure a watertight seal.
Battery replacement must only take place in
a safe area and using 1.5V AA alkaline bat-
teries.

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All Hanna Instruments meters are warranted
for two years against defects in workman-
ship and materials when used for their in-
tended purpose and maintained according to
the instructions.
Damages due to accidents, misuse, tamper-
ing or lack of prescribed maintenance are not
covered.
This warranty is limited to repair or replace-
ment free of charge.
If service is required, contact the dealer from
whom you purchased the instrument.
If under warranty, report the model number,
date of purchase, serial number and the na-
ture of the failure.
If the repair is not covered by the warranty,
you will be notified of the charge for repair or
replacement.
If the instrument is to be returned to Hanna
Instruments, obtain a Return Goods Authori-
zation from the Customer Service Department
first and then send it with shipment cost
prepaid.
When shipping any instrument, make sure it
is properly packaged for complete protection.
WARRANTY
Hanna Instruments reserves the right to modify the
design, construction and appearance of its
products without advance notice.
ERROR MESSAGES
• Blinking values denote indicative readings.
This will occur for the RH display if the
measured temperature is less than 0°C or
greater than 60°C.
• A blinking full scale value means that the
reading is out of range.
Error in temperature measure-
ment: reading is extremely over
range or sensor is damaged.
Error in RH measurement: the
sensor is wet or damaged.
FACTORY RECALIBRATION
All HANNA instruments®thermohygrometers
have been precalibrated at the factory, using
thermal humidity chambers.
It is generally recommended to have all
thermohygrometers recalibrated at least once
a year.
For an accurate annual recalibration, contact
your dealer or the nearest Hanna Service
Center.
ACCESSORIES
HI 710007 Blueshockproofrubberboot
HI 710008 Orangeshockproofrubberboot
HI 710011 Probesinteredcap
HI 710031 Ruggedcarryingcase

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Recommendations for Users
Before using this product, make sure that it is
entirely suitable for the environment in which it is
used.
Operation of this instrument in residential area
could cause unacceptable interferences to radio
and TV equipments, requiring the operator to take
all necessary steps to correct interferences.
Anyvariationintroducedbytheuserto thesupplied
equipment may degrade the instrument's EMC
performance.
To avoid electrical shock, do not use these instru-
ments when voltages at the measurement surface
exceed 24 Vac or 60 Vdc.
To avoid damages or burns, do not perform any
measurement in microwave ovens.

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MAN93640N 11/05
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United Kingdom:
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USA:
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For e-mail contacts and complete list of Sales and
Technical offices, please see www.hannainst.com
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