User manual HANNA INSTRUMENTS HI 9065

[. . . ] 5 OPERATIONAL GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 BATTERY REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Note: HI 9065 can be used with just one probe (RH or temperature) at a time. TEMPERATURE MEASUREMENTS (HI 9065 ONLY) Connect the temperature probe (HI 765 series, see "Accessories") to the socket on the top of the meter and the unit will automatically display the temperature reading. Note: HI 9065 can be used with just one probe (RH or temperature) at a time. Press the "°C" key and the temperature value is displayed in degrees Centigrade with the "°C" symbol. °C °C The same reading in degrees Fahrenheit is shown if the "°F" key is pressed. RH (RELATIVE HUMIDITY) MEASUREMENTS Turn the meter on by pressing ON/OFF. Press the RH key to display the RH% measurement. The "H" symbol on the display indicates RH measurement mode. °F ON/OFF For any problem in taking measurements, please contact your dealer or the nearest HANNA Customer Service Department. H RH HOLD FUNCTION 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 S displayed to indicate that the reading is also stored. Press the same key again to retirn to normal mode. HOLD · For reliable measurements, the end of the humidity detector should be exposed to a current of air moving at 0. 5 m (20") per second 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. If this should happen, or if condensation causes drops to form on the surface of the humidity sensor, turn off the instrument and wait until they have evaporated completely. To accelerate the evaporation process, expose the humidity sensor to a current of air. DISPLAY CODES °C temperature readings in degrees Centigrade (HI 9065 only) H indicate RH (Relative Humidity) readings S indicate that displayed reading has been stored 6 7 CALIBRATION 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 the 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 calibration chamber HI 7101. Li Cl 11. 1% Na Cl 75. 4% H 2 O · Pour approximately 12 cc of distilled water into the other chamber marked "RH 75. 4%". Li Cl 11. 1% Na Cl 75. 4% CALIBRATION KIT 12 cc · Add all the content of the HI 7121 bottle containing NaCl while continuously shaking the container to avoid the formation of lumps. Seal this container well when not in use. The calibration kit needs approximately 4 hours for stabilization. Na Cl Li Cl 11. 1% Na Cl 75. 4% CALIBRATION KIT CALIBRATION KIT 12 9 3 6 The kit is composed of two thermally isolated chambers, both equipped with a threaded cap and three bottles containing the appropriate precalibrated saturated salts to produce a known RH value. 4h CALIBRATION PROCEDURE · Bring the calibration kit to a temperature of approximately 20°C. · Remove the cap from the "RH 11. 1%" chamber containing the LiCl solution and insert the probe paying attention not to dip it into the liquid. · Remove the adhesive sticker which covers the calibration trimmer access holes. Li Cl 11. 1% Na Cl 75. 4% PREPARING THE CALIBRATION SOLUTIONS · Pour approximately 26 cc of distilled water into a glass container. [. . . ] The probes are guaranteed for a period of six months. This warranty is limited to repair or replacement free of charge. Damage due to accident, misuse, tampering or lack of prescribed maintenance are not covered. If service is required, contact the dealer from whom you purchased the instrument. [. . . ]