The DA211 range of data logger compatible detectors comprise of a photodiode detector with filter glasses, diffuser and a transimpedance amplifier for a voltage output. The detector is sealed in a waterproof enclosure and operates from a single rail power supply.

The detectors feature key designs including:

• Self-cleaning input diffusers
• Stay dry diffuser with wide drainage slots
• Cosine response
• Infinity error correction ring
• Aluminum body with resistant anodising
• High stability silicon photodiodes
• Internal resistor adjustable for annual calibration
• Internal resistor adjustable for zero offset bias.

DA211 Brochure

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

The DET223 series of detectors have a photidode detector, filter glass and cosine diffuser package with a multiple (or single option) range transimpedance amplifier and a voltage to frequency converter.

These detectors are exclusively for use with the Irradian range of 201 / 202 / 203 microprocessor controlled photometers and radiometers and also as compensation detectors of version 7 (SR9910) type spectroradiometers.

Detectors feature key designs:

• Fully submersible up to 10 meters
• Cosine response
• Aluminium body with resistant anodising
• High stability silicon photodiodes

UV203/3 Brochure

The Irradian DI221 underwater ultra violet series detectors are sealed in a waterproof enclosure and are designed for use down to a depth of 10 metres whilst maintaining the combinations of reliability and precision.

They are provided with a calibrated current sensitivity and comprise of a silicon or GaAsP photodiode and filter glass package with diffuser.

Three models are available that cover the UVA, UVB and UVAB regions:

• UVA - Model DI221A-Cos
• UVB - Model DI221B2-Cos
• UVAB - Model DI221AB-Cos

Key design features include:

• Fully submersible up to 10 metres
• Cosine response
• Aluminium body with resistant anodising
• High stability photodiodes

DI221 Brochure