The DA221 range of data logger compatible ultra-violet detectors comprises of an ultra-violet sensitive photodiode detector with filter glasses, diffuser and a transimpedance amplifier providing a voltage output. Each detector is sealed in a waterproof enclosure and operates from a single rail power supply.

Detectors feature key designs:

• Fully submersible up to 10 meters
• Cosine response
• Aluminium body with resistant anodising
• High stability silicon photodiodes
• Internal resistor adjustable for annual recalibration
• Internal resistor adjustable for zero offset bias

DA221 Brochure