Multi-purpose measurement with one device: Compact environmental measuring instrument
A versatile environmental measuring device that can measure various items such as air velocity in ducts and vents, indoor comfort, and the environment in labs and clean rooms, all with one unit.
The "testo 440" is a versatile environmental measuring instrument that can handle various measurements such as temperature, humidity, wind speed, CO, CO₂, and illuminance with a single device. By connecting a high-precision temperature probe with an accuracy of ±0.05°C and a high-precision humidity probe with an accuracy of ±0.6% RH, it can be used as a reference thermometer and reference hygrometer for comparative calibration on-site. When a thermal wire anemometer probe is connected, it can measure control wind speed for verifying the performance of local exhaust systems. Measurement data can be exported in CSV format, allowing for efficient data management. 【Examples of Use】 ■ Wind speed measurement in ducts and ventilation openings ■ Measurement of comfort levels and indoor air quality ■ Environmental measurement in laboratories and clean rooms ＼Catalog with application examples is currently available／ For more details, please view the PDF data by clicking "Download Catalog." You can also check examples of combinations with probes and usage cases.
basic information
【Features】 ■ High-precision measurement of immersion temperature and environmental humidity, can be used as a reference thermometer and hygrometer on-site. ■ Regularly check the performance of local exhaust devices such as draft chambers by measuring control air velocity, contributing to on-site safety management. ■ The "testo 440 dP model" equipped with a differential pressure sensor is also available in the lineup. *For more details, please download the PDF or feel free to contact us.
Price information
Testo 440 main unit: 56,000 yen High-precision temperature probe: 105,000 yen High-precision temperature and humidity probe: 92,000 yen Hot-wire anemometer probe: 50,000 yen (Prices are excluding tax until the end of December 2025.)
Price range
P3
Delivery Time
OTHER
Within 1 to 3 weeks.
Applications/Examples of results
【Examples of Use】 ■ Temperature and Humidity Management in Manufacturing Sites Can be used as a reference meter by connecting high-precision temperature and humidity probes. ■ Research and Occupational Health and Safety Management Accurately measures the control wind speed of local exhaust systems using a hot-wire anemometer probe. ■ Environmental Measurement in Clean Rooms and Other Areas Supports environmental measurements such as temperature, humidity, wind speed, and turbulence. *For more details, please download the PDF or feel free to contact us.
Line up（10）
| Model number | overview |
|---|---|
| 0560 4401 | Multi-environment measuring instrument testo 440 dP (with built-in differential pressure sensor) |
| 0563 4400 | Testo 440 Hot Wire Anemometer Probe Set |
| 0563 4401 | Testo 440 16mm vane anemometer set |
| 0563 4402 | Testo 440 Illuminance Meter Set |
| 0563 4403 | Testo 440 100mm vane anemometer set |
| 0563 4404 | Testo 440 Temperature and Humidity Meter Set |
| 0563 4405 | Testo 440 IAQ Set |
| 0563 4406 | Testo 440 Wind Speed Probe Set 1 |
| 0563 4407 | Testo 440 Wind Speed Probe Set 2 |
| 0563 4408 | Testo 440 Comfort Level Set |
catalog（3）
Download All Catalogs
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Distributors
Testo SE & Co. KGaA is a German global company with 37 local subsidiaries and affiliated companies worldwide, and it forms a network of agents in other regions. Since its establishment in 1957, it has focused on the research and development of portable environmental measuring instruments, releasing products that meet market needs. By proposing high-precision environmental measuring instruments and data management solutions, it has received high acclaim in a wide range of fields, including energy conservation, safety management, environmental protection, and food & healthcare. In Japan, it not only sells measuring instruments but also has established service centers to provide prompt maintenance and the issuance of calibration certificates.