heat. As long as the ice is not melting, the OS950 will accurately read its temperature.
To make an accurate target measurement, remove any ice or moisture before measuring.
Chapter Four - Maintenance
The
4.1 Battery Replacement
Open the instrument's cover to access the battery by loos- ening the screw on the back of the instrument. Remove the old battery and replace it with one fresh, 9 V alkaline bat- tery. Align the battery contacts as indicated on the case.
4.2 Cleaning
The only maintenance required involves keeping the sensor window clean. This window, located at the base of the nosepiece's reflective cup, is made of a special crystal that passes infrared heat. Dirt, greasy films, or moisture on the window will interfere with the passage of infrared heat and affect the accuracy of the instrument.
If necessary, clean the sensor window and reflective cup with a cotton swab dipped in alcohol. Periodic cleaning is a good practice.
4.3 Storage
When not in use, store the OS950 in a container, to protect the unit from dirt and dust. Do not store the unit in areas of extreme heat, cold, or humidity. If not using the OS950 for a long period, remove the battery from the unit.
4.4 Calibration
The OS950 is factory calibrated under high quality stan- dards. Because there are no mechanical adjustments, the instrument is able to maintain its calibration through vibra- tion and normal use. No field calibration is necessary.
Chapter Five - Troubleshooting
5.1 Diagnostic Codes
The
The battery voltage is also monitored. A low battery is indi- cated by a separate error code. The unit will continue to operate as long as accuracy can be assured. If the battery drops below 5.7 volts, the battery is considered "dead" and the display defaults to
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