EX623 V2.2 07/08

10

Non-Contact InfraRed Temperature Measurements

1.

Rotate the function switch to the IR position.

2.

Press the MODE button to select °F or °C.

3.

Aim the infrared sensor (rear of the meter) at the

surface to be measured.

4.

Press the IRT

button to turn on the IR

thermometer and laser pointer. The laser pointer

identifies the surface spot to be measured.

5.

The area of the surface to be measured must be

larger than the spot size as determined by the

distance to spot size specification.

6.

Read the temperature in the large upper display.

When the IRT button is released the displayed temperature will be held for approx. 10

seconds.

7.

Read the MAX temperature in the lower display.

Press the MAX/MIN button to toggle the lower display between the maximum and

minimum measured values.

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.

IR Measurement Notes

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.