Did you power it up and allow it to self calibrate per the manual? It says it takes about 10 seconds to warm up and should be allowed to self calibrate in 'nominal air such as outdoors' and that it is intended to measure it still ambient air. Normal pressure differentials at outlets, etc. as mentioned might not be considered still air.
They (and others) caution not to do that as it will probably wreck the sensor. Seeing as it is borrowed from work, the boss might not be pleased.
They (and others) caution not to do that as it will probably wreck the sensor. Seeing as it is borrowed from work, the boss might not be pleased.
