Fluke VT04A User Manual

 29 

To get the best performance from the Li-Ion battery, use these guidelines: 

•

 

Do not store the Product on the charger for more than 24 hours as reduced 
battery life may result. 

•

 

Charge the Product for a 2-hour minimum at least every six months to 
maximize battery life.  

•

 

Without use, the battery will self-discharge in approximately 6 months. 
Batteries stored for long periods may require two to ten charging cycles 
before it reaches full capacity. 

•

 

Always operate the Product within the operating temperature range in the 
specifications. 

Temperature Measurement Range..................... -10 °C to +250 °C 
Temperature Measurement Accuracy ................ ±2 °C or ±2 % as tested (at 25 °C), 

whichever is the greater  

On-Screen Emissivity Correction ........................ Yes 

On-Screen Reflected Background  

Temperature Compensation ............................... Yes 

Image Capture Frequency .................................. 8 Hz 
Detector Type ..................................................... Uncooled pyroelectric ceramic 
Thermal Sensitivity (NETD) ................................ ≤250 mK 
Infrared Spectral Band ........................................ 6.5 µm to 14 µm 
Visual Camera .................................................... 11025 pixels 
Field of View 

VT02 ............................................................... 20° X 20° 
VT04A, VT04 .................................................. 28° X 28° 

Focus Mechanism ............................................... Fixed Focus