The Extech HD400 Digital Light Meter is a precision instrument for measuring illuminance, including Lux and Foot candles (Fc). The HD400 includes a PC interface and Windows TM compatible software for real-time monitoring and storage of light level data. This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.
The Extech HD400 is a precision instrument designed for measuring illuminance in Lux and Foot candles. It features a large backlit LCD display, a fast-responding silicon photo-diode sensor, and meets CIE photopic spectral response standards. The device includes advanced functions such as Peak Hold, Data Hold, Maximum/Minimum memory, and Relative Mode to capture and analyze light levels effectively.
| Measurement Range (Lux) | 40.00 to 400.0k Lux |
|---|---|
| Measurement Range (Foot candles) | 4 to 4000 Fc |
| Accuracy | ± (5% rdg + 10 digits) |
| Display | 4000 count LCD display with 40 segment bargraph |
| Peak Capture Time | 10mS minimum |
| Operating Temperature | 0 to 40°C (32 to 104°F) |
| Power Supply | 9V battery |
The meter measures illuminance in Lux and Foot candles (Fc).
The meter turns off automatically after 20 minutes of inactivity.
Yes, it includes a USB PC interface for real-time monitoring and data storage using Windows compatible software.