Coherent FieldMaxII-TOP Manual do Utilizador descarregar pdf (Página 49)

Operation

Area Correction

and Zeroing

(thermopile and optical sensors only)

It is important that you zero the sensor before using

Area Correction, as explained in the following proce-

dure.

1. Enter Area Correction by pressing the Area button

for less than one second.

2. Set Auto Ranging by pressing the Auto button.

3. Block the sensor beam.

4. Allow the sensor to enter a steady (cool-down)

state. If you are using a thermopile sensor, this

steady state can be determined by watching the

display numbers on the LCD. At first the numbers

will decrease quickly but, as the sensor cools, the

numbers decrease more slowly—the slower the

decrease, the cooler the sensor, and the cooler the

sensor, the more accurate the area correction

reading will be. Optical sensors do not require a

cool-down period.

5. Press the Zero button.

The sensor is now zeroed. For more information about

zeroing, refer to “Zeroing” on page 51.

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Coherent FieldMaxII-TOP Manual do Utilizador Página 49