User manual LA CROSSE TECHNOLOGY IR-101NL

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Manual abstract: user guide LA CROSSE TECHNOLOGY IR-101NL

Detailed instructions for use are in the User's Guide.

[. . . ] Soft sided case Description of measuring principle When making a temperature measurement, the surface radiation of the object to be measured is evaluated using the principle of radiation thermometry. no radiation is transmitted, but instead, use is only made of the natural electromagnetic radiation energy (heat radiation) that every body above a temperature of absolute zero (-273 °C) has. The temperature can be determined very accurately from this radiation energy if the emission factor of the object being measured is known. 2. 3. Operation 1. Display and operator controls All of the functions of the measuring unit are controlled and monitored using the operating button (7) and the back lit display. [. . . ] This takes place at one-minute intervals or each time the unit is switched on. Changes in the ambient temperature, which can occur when the user holds the unit in their hand, are not monitored within this time period and therefore neither of them is taken into account when determining the indicated temperature. A gradual warming of the unit (the lens) between ambient temperature measurements can, for example, lead to the indicated temperature slowly falling. If the emission factor for the object does not correspond to the preset value of 0. 95, the temperature will not be calculated correctly. Most surfaces have an emission factor in the range of 0. 8 to 0. 98. In general, the darker and more matte the surface is, the larger their emissions factor. If the factor is greater the 0. 95, the temperature indicated will be greater than the actual temperature of the object being measured. If the factor is less then 0. 9, the temperature indicated will be less than the surface temperature. Polished metals have a very low emission factor and are therefore not suitable for measuring with an infrared thermometer. On the other hand, affixing adhesive tape to or painting the surface will increase the emission factor and reduce the inaccuracy of the measurement. It is not possible to take measurements through transparent materials (glass, plexiglas, etc. ). It is not possible to measure air temperatures. Measurement errors can occur due to air contaminated with dust, steam, smoke, etc. 6. 5 7. TROUBLESHOOTING Problem: Display shows -. Solution: The operating button has not been pressed for long enough. This must be pressed for at least the duration of one measurement, i. e. Problem: Display shows Err 1 Solution: The ambient temperature is outside the permitted range Problem: Display shows 1 Solution: The measured value is outside the permitted range. Problem: Battery symbol illuminates Solution: The batteries are dead. NOTE: For problems not solved, please contact La Crosse Technology. Changing the batteries If the battery symbol appears in the display, the batteries must be changed. The four button cells are accessible after opening the battery compartment at the rear of the unit. The used batteries must be removed from the battery holders and replaced by new button cells of the same type. Care must be taken to ensure that the polarity is correct when inserting. The plus terminal of all four batteries should point upwards. [. . . ] Before sending the infrared thermometer in for repairs, contact La Crosse Technology. The infrared thermometer will be repaired or replaced with the same or similar model. This warranty does not cover any defects resulting from improper use, unauthorized repairs or faulty batteries. LA CROSSE TECHNOLOGY WILL NOT ASSUME LIABILITY FOR INCIDENTAL, CONSEQUENTIAL, PUNITIVE, OR OTHER SIMILAR DAMAGES ASSOCIATED WITH THE OPERATION OR MALFUNCTION OF THIS INFRARED THERMOMETER. [. . . ]

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