[. . . ] OPERATIONAL GUIDE Temperature Measurement To obtain the temperature of an object, simply aim the sensor in the direction of the object. Keep the "ON/OFF" button pressed for a few seconds until the reading stabilizes. The instrument will continue reading the temperature, while the "ON/OFF" button is pressed. [. . . ] In this case, replace the battery with a 9V alkaline one. BATTERY REPLACEMENT Battery replacement must only take place in a non-hazardous area using a 9V alkaline battery. Detach the battery from the terminals and attach a fresh 9V battery while paying attention to the correct polarity. Replace the battery and the cover. CE DECLARATION OF CONFORMITY ACCESSORIES HI HI HI HI HI HI HI HI 710004 710007 710008 721316 731318 740016 740029 740123 Soft carrying case Blue shockproof rubber boot Orange shockproof rubber boot Rugged carrying case Wiping tissue (4 pcs) Battery cover 9 V Battery Wrist-strap Recommendations for Users Before using these products, make sure that they are entirely suitable for the environment in which they are used. Operation of these instruments in residential area could cause unacceptable interferences to radio and TV equipments, requiring the operator to take all necessary steps to correct interferences. Any variation introduced by the user to the supplied equipment may degrade the instruments' EMC performance. To avoid damages or burns, do not perform any measurement in microwave ovens. For example, if the sensor is 15 cm away from the object, the instrument measures the temperature of an area with a 5cm diameter. IS99550R2 01/00 Instruction Manual HI 99550 - HI 99551 Infrared Thermometers Dear Customer, Thank you for choosing a Hanna product. This manual will provide you with the necessary information for the correct operation of the meter. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst. com. This instrument is in compliance with directives. GENERAL DESCRIPTION Infrared radiation emitted from any object depends on its temperature. HI 99550 and HI 99551 are thermometers based on the infrared radiation technology. The most evident advantage of infrared thermometry is the non contact nature of measurement. With HI 99550 and HI 99551, the temperature measurement is simple: simply aim the thermometer at the object and then press and hold down the ON/OFF button. These instruments are equipped with a "HOLD" function, which freezes the display, making it easy for the user to read the measurement. The different models are: HI 99550-00 measures in Celsius, HI 99551-00 measures in Celsius, HI 99550-01 measures in Fahrenheit, HI 99551-01 measures in Fahrenheit, HI 99551-10 measures in Celsius. The thermometers also provide for a low battery indication. FUNCTIONAL DESCRIPTION This instrument is in h t t p : / / w w w . c o m Compliance with the CE Directives WARRANTY HI 99550 and HI 99551 are warranted for two years against defects in workmanship and materials when used for its intended purpose and maintained according to instructions. [. . . ] The instrument is supplied complete with · 9V Battery · Instruction manual Note: Conserve all packing material until the instrument has been observed to function correctly. Any defective item must be returned in its original packing. SPECIFICATIONS HI 99550-00 HI 99550-01 HI 99551-00 HI 99551-01 HI99551-10 Range -10 to 300 °C 14 to 572 °F -20. 0 to199. 9°C Resolution Accuracy (@20°C/68°F) 1. Wrist-strap 1 °C 1 °F ±2% of reading or ±2°C/±3°F ±2 °C/±4 °F 0. 95 (fixed) 6 to 14 µm 1 second 0. 1°C Typical EMC Deviation Emissivity Wave length Typical response time Optic coefficient Battery type Environement Dimensions Weight 3:1 (ratio of distance to diameter of target) 1 x 9V 0 to 50 °C (32 to 122 °F) 0 to 95% RH non-condensing 143 x 80 x 38 mm (5. 6x3. 2x1. 5") 320 g (11. 3 oz. ) [. . . ]