Submersible and portable, the new Htdl-20/30 High-Temperature Data Logger from Dwyer Instruments measures temperatures up to 260°C. It can record up to 32,700 measurements and will retain data even if the battery becomes discharged. An external probe ensures fast and accurate temperature readings. It can be started and stopped from a PC, and start-up can be delayed for up to 18 months after initialization. Dwyer Instruments Inc.