4-Channel Thermometer SD Logger
Extech SDL200 4-Channel Thermometer SD Datalogger
Advanced multi-point temperature monitoring and seamless data acquisition for complex industrial thermal profiling.
The Extech SDL200 is an industrial-grade, multi-channel temperature data logger engineered for facility managers, HVAC/R technicians, and process engineers who require simultaneous, high-precision thermal diagnostics across multiple zones. Designed for extensive data acquisition and system auditing, this instrument records readings directly onto a standard SD card in a ready-to-use Excel format, eliminating the need for complex proprietary software and streamlining reporting workflows.
Whether monitoring heat distribution across large electrical panels, balancing multi-zone HVAC configurations, or auditing industrial oven performance, the SDL200 provides a comprehensive and verifiable thermal record of your critical infrastructure.
Key Technical Capabilities
Simultaneous Multi-Channel Display: Allows for real-time monitoring of up to four distinct temperature zones simultaneously using Type K, J, E, T, R, or S thermocouples, or two zones via Pt100 RTD probes.
Direct-to-SD Excel Logging: Automatically logs data with a precise date and time stamp directly to an SD card (up to 20 million records on a 2GB card) in .XLS format for instant PC analysis.
Programmable Sampling Rates: Features a user-selectable data sampling rate ranging from 1 to 3600 seconds, making it adaptable for both rapid diagnostics and long-term facility monitoring.
Offset Adjustment Calibration: Includes a built-in offset adjustment function, allowing engineers to compensate for individual thermocouple errors and maximize measurement precision.
Rugged Diagnostic Features: Built with Min/Max tracking, Data Hold, and an automatic power-off feature, housed in a durable casing with a built-in stand for benchtop or field deployment.
Technical Specifications Summary
| Parameter | Measurement Range | Basic Accuracy |
| Type K Thermocouple | -100°C to 1300°C (-148°F to 2372°F) | ±(0.4% + 1°C) |
| Type J Thermocouple | -100°C to 1200°C (-148°F to 2192°F) | ±(0.4% + 1°C) |
| Pt100 RTD Probe | -200°C to 850°C (-327°F to 1562°F) | ±(0.4% + 1°C) |
| Datalogging Memory | Up to 20M records (2GB SD Card) | Date & Time stamped |
Integrate comprehensive, multi-zone thermal data acquisition into your diagnostic reporting for