Key facts
- Brand
- testo
- Model
- 454
- Category
- Other device
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2026-10-08
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Testo 454 Data Logger Instruction Manual
This manual covers the Testo 454 data logger, a handheld instrument for measuring temperature, humidity, velocity, pressure and other parameters. It describes the instrument layout, keyboard functions, menu structure, and step‑by‑step introductory training for measuring, printing and saving data.
The document also includes detailed technical data, probe information, ordering details, accessories, and warranty conditions. It explains how to connect probes, configure measurement programs, use the infrared printer, and transfer data to a PC via the Comfort software.
Testo 454 specifications
| Temperature measuring range | -200 to +800 °C |
|---|---|
| Temperature resolution | 0.1 °C |
| Temperature accuracy | ±0.1 °C (-49.9 to +99.9 °C) |
| Number of probe inputs | 6 |
| Memory space | 256 kB (≈110,000 measured values) |
| Battery life | 8 h continuous operation with 6 thermocouple probes |
| Weight | 650 g (incl. rechargeable battery) |
| Power supply | 6‑cell rechargeable battery or 12 V mains unit |
All Testo 454 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the temperature measuring range of the Testo 454?
The instrument can measure temperatures from –200 °C up to +800 °C.
How many probe inputs does the Testo 454 have?
It provides six probe inputs that can be freely assigned.