TES-1339P Photosynthesis Light Quantum Meter with Data Logging

Description

The TES-1339P is a Photosynthesis Light Quantum Meter with data logging capabilities, manufactured by TES Electrical Electronic Corp. It is used to measure illuminance and photosynthetic photon flux density (PPFD) and is suitable for professionals in agriculture, horticulture, and research.

Key Features

• Measurements: Measures illuminance in lux and foot-candles, and converts to PPFD (µmole/m²/s) and Daily Light Integral (mole/m²/d).
• Display: Dual 4-digit LCD reading.
• Auto-ranging: Features a 5-step auto-ranging function for various measurement levels.
• Data logging: Can store up to 40,000 sets of data, with an additional 99 sets for direct LCD reading.
• PC interface: Equipped with a USB interface and software for connection to a computer.
• Spectral correction: Includes a spectral correction factor function, which is useful for LED light sources.
• Photosensor: Utilizes a long-life silicon photodiode and a spectral response filter.
• Specialized functions: Includes a point-average function, a time-hold function, and a comparator function.
• Power source: Uses 6 AAA batteries, with a typical battery life of 100 hours.
• Accessories: Comes with a carrying case, instruction manual, CD software, and an RS232 to USB cable.