HT instruments HT307 - Manual (Page 4)

HT307
EN - 3
2. GENERAL DESCRIPTION
HT307 is a precision digital illuminance meter for light measurements (lux, ft), complying
with the CIE (International Commission on Illumination) spectral response.
It’s fully cosine corrected for the angular incidence of light. Compact, tough and easy to
handle.
The photo detector is a very stable long-life silicon photodiode with spectral response filter.
2.1. FEATURES
• Light measuring levels up to 200.000 lux / 20.000 fc.
• High accuracy and rapid response.
• DATA HOLD function to hold measuring values.
• Unit and sign display for easy reading.
• Manual zeroing with trimmer.
• Corrected for spectral relative efficiency.
• Possibility to select the measuring mode in lux or fc scale, alternatively.
• Maximum and minimum values.
• DC analogic output for connection to external datalogger.
• Low battery indication.