[. . . ] This instrument is in compliance with the directives. FUNCTIONAL DESCRIPTION SPECIFICATIONS Range Resolution Accuracy PRELIMINARY EXAMINATION Remove the instrument from the packing material and examine it carefully to make sure that no damage has occurred during shipping. If there is any noticeable damage, notify your Dealer or the nearest Hanna Office. Note: Save all packing materials until you are sure that the instrument functions correctly. [. . . ] Each meter is supplied complete with HI 765BL temperature probe, 4 x 1. 5V AA batteries and instruction manual. 1. Measuring scale, °C or °F ISTR9060 01/03 OPERATIONAL GUIDE INITIAL PREPARATION Each meter is supplied complete with batteries. Remove the back cover, unwrap the batteries and install them while paying attention to their polarity. Connect the temperature probe to the connector on the top of the meter. If the meter does not come on, make sure that the batteries are correctly installed. The thermometer will carry out a self diagnostic test routine, the LCD will show all segments for a few seconds (or as long as ON/OFF is held), followed by the percentage indication of the remaining battery life. If a temperature probe is plugged in, the meter displays the measured temperature. If no probe is plugged in, or if reading is over-range, the display shows flashing dashes. If a measurement is slightly over the range of the meter specifications, the display flashes the closest full-scale value. To switch the thermometer OFF, press the ON/OFF key. Note: Although the display is frozen, internally the meter continues measuring and updating Hi and Lo values. FACTORY RECALIBRATION All Hanna thermometers have been accurately pre-calibrated at the factory. It is recommended to have all thermometers recalibrated at least once a year. For an accurate annual recalibration, contact your nearest Hanna Service Center. Hanna Accuracy Test Plugs provide a quick and easy way to test the meter's accuracy by simply connecting these Test Plugs to the probe connector of the meter. If the reading differs by more than ±0. 4°C (±0. 8°F) from the Test Plug value, the meter is due for recalibration. Choose the Test Plug closest to your measurement range to best suit your needs: HI 765-18C Calibration key, ­18. 0°C HI 765000C Calibration key, 0. 0°C HI 765070C Calibration key, 70. 0°C HI 765-004F Calibration key, ­0. 4°F HI 765032F Calibration key, 32. 0°F HI 765158F Calibration key, 158. 0°F TEMPERATURE PROBES & ACCESSORIES Hanna offers a wide range of probes to meet your needs with air, liquid, penetration and surface measurements. All Hanna temperature probes are pre-calibrated at the factory and ready-to-use. These interchangeable probes make it possible to switch from one probe to another without requiring recalibration. Hanna probes are also available in different handle colors to avoid cross contamination during testing. HIGH/LOW TEMPERATURES The maximum and minimum temperatures are continuously monitored and displayed in the lower portion of the LCD. [. . . ] To avoid electrical shock, do not use these instruments when voltage at the measurement surface exceeds 24VAC or 60VDC. To avoid damage or burns, do not perform any measurement in microwave ovens. MEASURING SCALE (°C/°F) The instrument is factory set to the °C scale, but measurements can be performed in either the Celsius or Fahrenheit scale. Press the °C/°F button to select the desired scale. HOLD MODE The HOLD function is activated by pressing the HOLD key. [. . . ]