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testo 405i - Hot wire anemometer for air conditioning systemsMeasure air velocity, temperature and volume flow with just one instrument - the durable testo 405i hot wire anemometer provides reliable measurements and, if combined with the smart probe app, allows remote measurement readings. With its automatic calculations, the app erases the need for error-prone manual calculations. Merely download the testo smart probe app, take advantage of user-friendly readings and create custom reports that are quickly saved and retrieved.The telescopic shaft is extendable and rotatable, making otherwise hardly accessible in-duct measurements of airflow fast and easy. The rugged housing protects the device from impact, making it extremely durable.Technical DataTemperature measuring range: -4° to 140 °F / -20 to +60 °CTemperature measurement accuracy: ±0.9 °F / ±0.5 °CVelocity measuring range: 0 to 5906 fpm / 0 to 30 m/sVelocity measurement accuracy: ±(19.7 fpm + 5 % of mv) (0 to 394 fpm) / ±(0.1 m/s + 5 % of mv) (0 to 2 m/s) / ±(59.1 fpm + 5 % of mv) (394 to 2953 fpm) / ±(0.3 m/s + 5 % of mv) (2 to 15 m/s)Dimensions 8 x 1 x 2 in. / 200 x 30 x 41 mmWeight4.22 oz. / 119.6 gSystem Requirementsrequires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0Scope of Delivery:✓ testo 405i Bluetooth hot-wire anemometer, including 3 AAA batteries and certificate of calibration
Reliable measurement: The smart probe accurately measures air velocity, temperature and in-duct airflow, as well as volume flow if the duct dimensions are provided
Practical: With its hinged, telescopic shaft that can be extended to up to 15", the ac sensor can be used to measure airflow even in areas that are difficult to access
Portable: The compact anemometer probe is extremely lightweight and time-saving, making it suitable for personal and professional servicing of air conditioning or HVAC systems
Wireless: Equipped with Bluetooth 4.0, the handheld air conditioning meter can easily be connected to a smartphone or tablet and offers remote measurement readings
Smart App: The Smart Probe App provides convenient instrument readings tables and graphs. All measured data can be stored, retrieved or included in custom reports
Works well. Fast response and pretty consistent resultsDoes what it should and does it well, decent phone app.AC guy could not figure out why my air conditioner was icing up. With this meter I diagnosed low blower performance and he had to replace my defective blower under warranty. Fixed my air conditioner. On line videos show you how to use all the features. It works through you smart phone and is very accurate with multiple measurement methods.Temp is 10 degrees F too high. I tested it against 3 other temp readers. Maybe this one is just not calibrated right, did anyone get one that gives an accurate temp reading?Nicely built and well calibrated. Extremely helpful making sure the AC system is working as it should.All of Testo’s tools come with a certificate of calibration. This tool that I purchased didn’t. So I’m not sure if it’s been properly calibrated or not.With the proper APP this is an excellent product.Great tool must have if you want to be a competent HVAC tech. Works great with a cheap Iphone. Does have some issues on occasion linking to the phone but once it connects once you seem to be good for. Eliminates so many question marks during troubleshooting and its so quick and easy to use.The 450i anemometer worked fine (screenshot attached). I did the math using the cross-section area of the duct, and the number was within 5% of than the rated output of the blower that I was to create the air flow.The app was easy to install, but asked access to my contacts and location. The manufacturer should offer options to disable this, and should not bundle reviews for all smart probes into one.Please offer the case with foam inserts to keep the probes. Thanks!Unable to get calibrated and bluetooth connection erratic.Fast response time % poor damping algorithm.Unsuitable for repeatable readings at lower velocities.Después de 3 años utilizándolo estoy súper contento,me proporciona con exactitud caudales de aire por rejillas de impulsion y retorno y temperaturas del aire,que las gráfico con el móvil y las comparto a clientes para que quede registro de las medidas.Lo recomiendo al 100%Dieses Messgerät funktioniert super. Die Bluetoothkopplung erfolgt ohne Fisemantenten mit Passwörtern und vergessenen Pairung tadellos. Es gibt drei verschiedene technische Möglichkeiten, Luftgeschwindigkeiten zu messen, je nach Geschwindigkeit. Dieses Gerät misst im "kleinsten Empfindlichkeitsbereich" von 0...30m/s. Man kann damit selbst kleinste Strömungen an Fensternspalten und Türen messen. Ebenso ist es möglich Kühlluftströmungen an Dunsthauben, Kaminen oder selbst im PC zu analysieren. Aus der Physik ist bekannt, dass dass sich der thermische Widerstand eines Kühlkörpers zwischen 0 m/s und 3,5m/ s in etwa auf 1/5 tel reduziert. Oberhalb von ca 4m/s könnte man eine Kühlturbine mit 100m/s einsetzen. Es passiert kühltechnisch oberholb von 4m/s nichts mehr. Ales spielt sich zwischen 0 und 3,5m/s ab. Das Wirkprinzip ist ja so, dass ein winziges Kügelchen im Messkopf elektrisch aufgeheizt wird, die vorbeiströhmende Luft kühlt es ab und die Abkühlung wird gemessen. Dieses Messprinzip wird hier zur Perfektion gebracht. Sehr gutes Gerät.good
