HT instruments THT70 - Manual (Page 39)

THT70
EN - 37
5.2.3.4 Setting the Isotherm function
In the Image menu, touch the icon “ ” to select the Isotherm function and to activate a
screen clearing function. The following options are available (see Fig. 59)
 Isotherm  allows activating the Isotherm function and to define its characteristic.
 Clear screen  allows having the display cleared of all symbols.
Fig. 59: Setting the Isotherm tool
1. Touch the item “Isotherm” or the symbol “ ” to activate the Isotherm function. The
icon “ ” is shown on the display
2. Touch the icon “ ” to define the characteristics of the Isotherm line. The screen Fig.
59 is shown on the display. The meaning of the items is the following:
 Mode  defines the type of Isotherm. Available options are:
 Between  the instrument shows the spots of the image with temperature
between: [Value
 Value + Range] with colour defined by the user.
 Higher  the instrument shows the spots of the image with temperature higher
than Value + Range with colour defined by the user.
 Lower  the instrument shows the spots of the image with temperature lower
than Value with colour defined by the user.
 Value  defines the value of initial temperature the Isotherm line refers to.
Measuring range: -19.5°C
 399.5°C
 Width  defines the value of the offset temperature interval with respect to the
initial temperature value. Measuring range: -1.0°C
 420.0°C
 Colour  defines the colour of the Isotherm line. Possible options: Black, Green,
White, Transp. (Transparent)
3. Press the “ ” key to go back to the previous screen
4. Touch the item “Clean screen” to activate the complete clearing of the display from all
other symbols (option recommended with use of the Isotherm line tool).
5. Touch the display to exit the Isotherm line function.