TSI 9535 Velocicalc Handheld Digital Air Velocity Meter, Measures Velocity and Temperature, Calculates Air Flow

It does all measurements I need fast and with precision, and even datalogs readings. It is a tool I could not do without, when I evaluate performace of HVAC systems. Oh, made in US too.

Measuring air flow at low speed has always been challenging. Not anymore, as this TSI velocicalc does it very well. I am glad I got it, as it improved my work.

Really like all the probes you can get and really make this unit versatile. Also it logs a ton of measurements making analysis a breeze. A little heavy on pricing but it is precalibrated, so...

I use this to make sure our room we use to dry our pots maintains a certain temperature and is producing the correct flow from the ducts. Simple to use.

just wanted to comment that i liked getting the software and NIST Calibration included with my purchase.

Accurate and easy to use

So beyond simple air velocity a lot of jobs require you to measure volumetric flow. I hope if that’s your job you know how to do it but this meter can calculate it accurately and that saves you a lot of time. Plus it has a really long probe that makes it easy to work in various building envelope sizes and it comes standard with the NIST cal so you know the results are accurate and you can prove the accuracy of the meter to an overseer if you need to (usually the government in the case of having gto show a NIST cert). Overall a great meter and worth the price from the most reputable brand in the industry

Measures air flow and temperature, and datalogs over 17,000 samples. That is very impressive. The tools has helped me grow business a lot. It's very accurate too. I love it.

Went with the less expensive model hre. No modular probes and such but the price tag is better and the multiple measurements with datalogging meet our needs at the lab here;

Like this unit. Easy to operate and can handle flow calculations

The several different readings it can give is great to tell if there is a correlation between each other, to see if they are being caused by the same source.

The different tests and samples are useful to go off from when reading the conditions of the air in a area.