Dwyer's Model HTDL-20/30 data logger can measure temperatures up to 500 °F
Dwyer Instruments' Model HTDL-20/30 is a high-temperature data logger that can measure temperatures up to 500 °F (260 °C). This submersible and portable data logger can record up to 32,700 measurements and has an external probe to ensure accurate temperature readings. The HTDL-20/30 contains non-volatile solid state relay memory that will retain data even if the battery becomes discharged. The HTDL-20/30 can be started and stopped from a PC or delayed to start up to 18 months after initialization.