Can you use it to measure air mass? Like kg / hour? And does it compensate for air temperature and air pressure?

It measures air velocity, period. Does not compensate for pressure or temperature. Does not measure air mass flow directly.

Can it calculate or convert to Feet per minute?

Here are the specs you are looking for: Measuring range: 0 to 6,000 fpm Accuracy: ±(20 fpm +5 % of m.v.) (0 to 394 fpm) / ±(59 fpm +5 % of m.v.) (394 to +3,000 fpm) Resolution: 1.97 fpm Volume flow: (cfm) 0 to 99,999 cfm (Resolution: 0.1 cfm)

Can you use it to measure the delta?

There's a trendline function that can keep track of changing temp over time.

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– testo 405i Hot-wire Anemometer I Wireless Smart Probe for air velocity, in-duct airflow and temperature

Product ID: 386510290

Details

Brand
Testo
Item dimensions L x W x H
20 x 3 x 4.1
Item weight
0.23 Kilograms
Material
Acrylonitrile
Style
Wireless Smart

📏15" telescopic shaft for hard-to-reach spots

📶Bluetooth 4.0 wireless connectivity

🌡️±0.5°C temperature accuracy

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€ 287.07

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Sold byAmazon SlovakiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌬️ Measure smarter, work faster — the testo 405i keeps you ahead of the airflow game!

EXTEND YOUR REACH - Telescopic, hinged shaft extends up to 15 inches for effortless access to tight ducts and vents.
LIGHTWEIGHT DURABILITY - Compact and rugged ABS housing weighs just 4.2 oz, built to withstand the demands of professional HVAC servicing.
PRECISION IN EVERY BREEZE - Accurately measures air velocity up to 30 m/s and temperature from -20 to 60°C with industry-leading precision.
SEAMLESS WIRELESS WORKFLOW - Bluetooth 4.0 connectivity syncs instantly with your smartphone or tablet for remote readings and real-time data.
SMART DATA SMARTER DECISIONS - Leverage the Smart Probe App to visualize airflow data, generate custom reports, and eliminate manual errors.

The testo 405i is a wireless hot-wire anemometer designed for professional HVAC and air conditioning diagnostics. It features a telescopic shaft extending up to 15 inches for hard-to-reach airflow measurements, Bluetooth 4.0 connectivity for seamless smartphone integration, and precise temperature and velocity readings with ±0.5°C accuracy. Lightweight and rugged, it pairs with the Smart Probe App to deliver real-time data visualization and custom reporting, streamlining airflow analysis and boosting productivity.

Specifications

ASIN	B018VO5GI2
Brand Name	Testo
Customer Reviews	4.5 4.5 out of 5 stars (599)
EU Spare Part Availability Duration	1 Years
Global Trade Identification Number	04029547014260
Included Components	testo 405i hot-wire anemometer, 3 AAA batteries and certificate of conformity
Item Dimensions	20 x 3 x 4.1 centimeters
Item Weight	0.23 Kilograms
Manufacturer	Testo
Material Type	Acrylonitrile Butadiene Styrene
Measurement Accuracy	±0.9 °F / ±0.5 °C
Model	0560 1405 01
Part Number	0560 1405
Style Name	Wireless Smart Probe
Unit Count	1 Count

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