FLIR Commercial Systems Inc. EX845 Manual Do Utilizador

 

10 

1. 

Set the function switch to the IR Temp position. 

2. 

Aim the infrared sensor (rear of the meter) at 

the 

surface to be measured. 

3. 

Press the     button in the center of the rotary 
function switch to turn on the laser pointer and 
identify the surface spot to be measured. 

4. 

The area of the surface to be measured must 

be larger than the 

spot size as determined by the distance to spot 

size specification. 

5. 

Read the temperature in the display. 

Note: See the “Temperature Units” paragraph to select 

o

F or 

o

C 

 

WARNING: Do not directly view or direct the laser pointer at an eye. Low 
power visible lasers do not normally present a hazard, but may present some 
potential for hazard if viewed directly for extended periods of time. 

 

IR Spot to Distance Diagram 

The 8:1 spot to distance ratio determines the size of the measured surface area with respect to the distance 
the meter is held away from the surface.  

 

 

 

 

 

 

 

 

 

 

 

1. 

The object under test should be larger than the spot (target) size calculated by the field of view diagram. 

2. 

If the surface of the object under test is covered with frost, oil, grime, etc., clean before taking 
measurements. 

3. 

If an object's surface is highly reflective, apply masking tape or flat black paint to the surface before 
measuring. 

4. 

The meter may not make accurate measurements through transparent surfaces such as glass. 

5. 

Steam, dust, smoke, etc. can obscure measurements. 

6. 

To find a hot spot, aim the meter outside the area of interest then scan across (in an up and down 
motion) until the hot spot is located.