User manual for the Extech SD700 data logger that records pressure, humidity and temperature, with operation, settings and specifications.
The Extech SD700 is a handheld data logger that measures atmospheric pressure, relative humidity and temperature, stores the readings on an SD card and can transfer the data to a computer. This manual provides an overview of the device, its components and how to install batteries or an AC adapter.
It explains how to operate the logger, configure advanced settings such as sampling rate, units and SD‑card formatting, and describes the RS‑232 output. Technical specifications and troubleshooting tips are included to help users achieve reliable measurements. This manual is written in Chinese.
| Display | 60 x 50 mm (2.4 x 2.0”) LCD |
|---|---|
| Measured Parameters | Temperature, Relative Humidity, Atmospheric Pressure |
| Memory Card Capacity | 1 GB to 16 GB SD card |
| Sampling Rate Options | 5, 10, 30, 60, 120, 300, 600 s or auto |
| Power Supply | 6 × AAA (1.5 V) or 9 V AC adapter |
| Battery Life | ≈1 month with new alkaline AAA at 60 s rate |
| Weight | 282 g (0.62 lb) |
| Dimensions | 132 × 80 × 32 mm (5.2 × 3.1 × 1.3 in) |
| Temperature Range | 0.0 °C to 50.0 °C |
| Temperature Accuracy | ±0.8 °C (0.1 °C resolution) |
| Humidity Accuracy | ±0.1 % (±(4 %+1 % RH) reading) |
| Pressure Range | 10.0 hPa to 000.0 hPa |
| Pressure Accuracy | ±2 hPa (0.1 hPa resolution) |
Enter Advanced Settings, select "Sd F – Format SD card", choose Yes, and press Enter to format, which erases all current data.
In Advanced Settings choose "SP-t – Set sampling rate", press the up/down buttons to pick the desired interval (5‑600 s or auto) and press Enter to store it.
Remove the SD card from the logger, insert it into the computer’s SD slot, launch Excel and open the data file on the card.