3085-O2

Accessory

Oxygen Sensor

In chlorophyll-fluorescence research, experiments are sometimes performed at decreased oxygen concentrations to avoid photorespiration. The optical oxygen sensor 3085-O2 plugs directly into the gas pathway of the GFS-3000 to record actual oxygen concentrations; communication via USB

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Product

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GFS-3000

Portable gas exchange fluorescence system

Field

Laboratory

Design

The optical oxygen sensor 3085-O2 for gas measurements contains a sensor, which is based on luminescence quenching of a sensor dye. Molecular oxygen reversibly quenches the luminescence. This principle is very robust, has a very low drift and has virtually no interferences to other gases. Optics and electronics are sealed from the measured gas. Typically, the factory calibration is sufficient during lifetime of the sensor. The signal is temperature compensated.

Range

typical 0 - 50 kPa O2, maximal 0-200 kPa O2

Accuracy (10°C to 40 °C)

±0.02 kPa at 1 kPa; ±0.5 kPa at 20 kPa
(±0.02% O2 at 1%O2; ±0.5%O2 at 20%O2)

Operating temperature

-10°C to 60°C

Detection limit

10 Pa (0.01% O2)

T63 response time

< 2s

Drift@25°C

< 1% O2 / year at 20% O2

Minimum lifetime

> 50 000 000 measurements (1 meas./s)

Storage life

> 5 years in darkness at 20°C

Connector

USB

Supply voltage

3.3-5V supplied via USB

Current

8-10 mA

Weight

160 g

Dimensions

body: 8 cm x 5 cm x 5 cm
with rolled-up cable: 8 cm x 15 cm x 5 cm

Usage

Field

Laboratory

Gas Exchange

Photosynthetic Light Reactions

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