Fluke 561 - Manual (Page 8)

561 HVACPro
Users Manual
4
AA
Batteries
(2)
Display
Function Buttons
Laser
Trigger
Battery
Cover
efh007f.eps
Figure 2. Infrared Thermometer
Display
The primary temperature display reports the current or last IR temperature read until the 7-second hold
time elapses.
The secondary temperature display reports current thermocouple temperature when a type-K thermocouple
is attached. When a thermocouple is not connected, the small temperature display reports a choice of
maximum, minimum, or difference between maximum and minimum temperature.
You can toggle through the minimum, maximum, and difference IR temperatures anytime the display is on.
The MIN, MAX, and DIF temperatures are constantly calculated and updated when the trigger is pressed.
After the trigger is released, the MIN, MAX, DIF temperatures are held for 7 seconds.
Notes
When the battery is low, B appears on the display.
The last selection (MIN/MAX/DIF) is maintained on the secondary display even after the Thermometer has
been turned off, providing the batteries have not failed.