Extech SDL200 4 Channel Datalogging Thermometer
The Extech SDL200 4 Channel Datalogging Thermometer delivers accurate and reliable multi-point temperature measurement. It logs data directly to an SD card and supports up to four thermocouple inputs, making it ideal for standalone use and long-term monitoring. With clear LCD display and user-programmable sampling rates, this instrument fits a wide range of professional applications.
The Extech SDL200 offers flexibility by supporting six thermocouple types (J, K, E, T, R, S) and two RTD Pt100 channels. It displays temperature readings as individual channels (T1, T2, T3, T4) or as a differential (T1–T2) format. The offset adjustment function allows users to set a relative zero point, supporting more precise comparisons during testing.
Flexible Logging and Display Options
The Extech SDL200 captures data with a real-time clock and date stamp, recording up to 99 internal readings or 20 million via a 2GB SD card. This data is automatically saved in Excel-compatible format, allowing smooth export and analysis. The built-in PC interface further simplifies data access.
Reliable in the Field
With a rugged design and supplied carrying case, the Extech SDL200 is suitable for industrial, HVAC, laboratory, and QA environments. Additional features like MIN/MAX, data hold, and auto power-off improve usability. Four Type K probes and AA batteries are included for immediate deployment.
Key Features
- Supports four simultaneous thermocouple inputs
- Accepts J, K, E, T, R, and S thermocouple types
- Also supports dual-channel RTD (Pt100) probes
- Logs up to 20 million readings using 2GB SD card
- Real-time timestamped data in Excel format
- Displays T1–T4 or T1–T2 differential readings
- Offset adjustment enables zero relative function
- User-set sampling rates from 1 to 3600 seconds
- MIN/MAX capture, data hold, and auto power-off
- Includes PC interface, probes, batteries, and case

