Pyrometers are used for the contactless measurement of high temperatures. Depending on design, radiation pyrometers measure from about -50 °C up to 3,000 °C.[1] In iron melting, immersion thermocouples are used instead, measuring by contact rather than radiation; their range is 1,000 °C up to 1,600 °C, or briefly up to 1,800 °C.[2]
References
- Optris GmbH: CS series and CSmicro series, radiation pyrometer range. Product category page, accessed 27 August 2026.
- Herbert H. Netzel: Induktionsofenhandbuch. 3rd edition, Eigenverlag IES, Witten 2003, p. 156.