User`s manual

14.2 Changing object parameters

14.2.1 Changing object parameters globally

General

For accurate measurements, you must set the object parameters. This procedure

describes how to change the object parameters globally.

Atmospheric

parameters group

Atmospheric temperature: The temperature of the air between the camera and

the object of interest.

■

Relative humidity: The relative humidity of the air between the camera and the

object of interest.

■

Transmission: The computed or fixed transmission through the atmosphere.

External optics

group

Temperature: The temperature of any protective windows, etc. that are set up

between the camera and the object of interest. If no protective window or protective

shield is used, this value is irrelevant.

■

Transmission: The optical transmission of any protective windows, etc., that are

set up between the camera and the object of interest.

Image object

parameters group

Emissivity: How much radiation an object emits, compared with the radiation of

a theoretical reference object of the same temperature (called a ‘blackbody’). The

opposite of emissivity is reflectivity. The emissivity determines how much of the

radiation originates from the object as opposed to being reflected by it.

■

Distance: The distance between the camera and the object of interest.

■

Reflected apparent temperature: Used when compensating for the radiation from

the surroundings reflected by the object into the camera. This property of the

object is called reflectivity.

Procedure

Follow this procedure:

Go to the Parameters pane.1

Put the cursor in the white text box to the right of the parameter that you

want to change.

Type the new value and press the RETURN key.3