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General| Type | Environmental Meter |
|---|---|
| Data Logging | Yes |
| Measurement Range (Sound Level) | 30 to 130 dB |
| Measurement Range (Light) | 0 to 20, 000 Lux |
| Measurement Range (Lux) | 0 to 20, 000 Lux |
| Accuracy (Sound Level) | ±1.5 dB |
| Accuracy (Light) | ±5% of reading |
| Accuracy (Humidity) | ±3%RH |
| Accuracy (Lux) | ±5% of reading |
| Resolution | 0.1°F/°C, 0.1dB, 1Lux, 0.1%RH |
| Resolution (Sound Level) | 0.1 dB |
| Resolution (Light) | 1 Lux |
| Resolution (Humidity) | 0.1% RH |
| Resolution (Lux) | 1 Lux |
| Display | LCD |
| Interface | USB |
| Measurement Range (Humidity) | 10% to 95% RH |
| Power Supply | 4 x AAA batteries |
| Memory | 16, 000 data points |
| Operating Temperature | 32 to 122°F (0 to 50°C) |
| Power Supply (Lux) | 4 x AAA batteries |
| Sampling Rate | 1 second |
| Sampling Rate (Lux) | 1 second |
Overview of the Extech SDL400 Light Meter and its capabilities.
Important safety information and symbols for user guidance.
Detailed list and description of all meter parts and connections.
Instructions for turning the light meter on and off.
How to activate or deactivate the meter's display backlight.
Connecting sensors and selecting measurement units for light and temperature.
Step-by-step guide for measuring light intensity.
Guide for taking temperature readings using a thermocouple.
How to zero the light meter and freeze readings.
Important safety note on thermocouple probe temperature ranges.
How to enter, change settings, and exit the setup mode.
Configuring the internal clock and the datalogger's sampling interval.
Managing auto power off, beeper, numerical format, and SD card.
Selecting temperature units (°C/°F) and thermocouple types (K/J).
How to reset the meter if keys become inoperable or display freezes.
Manually logging up to 99 readings onto an SD card.
Automatically logging data at a user-specified sampling rate.
Steps for transferring logged data from the SD card to a computer.
Connecting to a PC via RS-232/USB for data streaming.
How to use the optional AC power adapter for continuous power.
Procedure for replacing batteries and safe disposal guidelines.
Important safety precautions for handling and using batteries.
Overview of display, sensors, power supply, weight, and dimensions.
Detailed ranges, resolutions, and accuracies for light and temperature measurements.
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