Unfortunately there is no indicator. On the older X-am 2000 air monitors there was an exclamation mark ❗️in the upper right corner that would go away when it is warmed up. But on the newer X-am 2500 air monitors the exclamation Mark ❗️ goes away before it is actually warmed up. It generally takes 4-5 minutes before it is warmed up. “Unless” you have removed the batteries or it lost power. In that case it can take 15-20 minutes to warm up. The easiest way to check how much longer you have until it is finished warming up is to just attempt a fresh air calibration as explained here and it will tell you how many minutes are left for it to finish warming up, as shown in one of the units in the video here. Once you are able to perform a fresh air calibration on the unit then it is warmed up.
How do I know if the unit is warmed up? Is there any indicator or something that shows the unit is ready to be used?
Unfortunately there is no indicator. On the older X-am 2000 air monitors there was an exclamation mark ❗️in the upper right corner that would go away when it is warmed up. But on the newer X-am 2500 air monitors the exclamation Mark ❗️ goes away before it is actually warmed up.
It generally takes 4-5 minutes before it is warmed up. “Unless” you have removed the batteries or it lost power. In that case it can take 15-20 minutes to warm up. The easiest way to check how much longer you have until it is finished warming up is to just attempt a fresh air calibration as explained here and it will tell you how many minutes are left for it to finish warming up, as shown in one of the units in the video here. Once you are able to perform a fresh air calibration on the unit then it is warmed up.