Fluke 561 user manual Display, When the battery is low, B appears on the display

561HVACPro

Users Manual

Laser

Display

Trigger

AA

Batteries

(2)

Function Buttons

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.

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