Specifications for GFS-3000: LED-Array/PAM-Fluorometer, Fiberoptics PAM-Fluorometer, Oxygen Sensor, and Accessories

All specifications are subject to change without prior notice.

LED-Array/PAM-Fluorometer 3057-FL

Design: Combined PAM chlorophyll fluorometer and LED light source comprising an LED array with red LEDs (for actinic illumination and saturation pulses), blue LEDs (for additional actinic illumination), far-red LEDs, additional red LEDs (for measuring light) and 6 photodiodes (for chlorophyll fluorescence detection)

Measuring light: Red LEDs (635 nm), modulation frequency 5 to 100 Hz

Actinic light: Blue LEDs (470 nm) and red LEDs (635 nm), range blue: 0 to 400 µmol m-2 s-1 PAR, range red: 0 to 3000 µmol m-2 s-1 PAR, mixable with variable proportions of red and blue up to a total PAR of 3000 µmol m-2 s-1 at 25°C

Saturation light: Red LEDs (635 nm), up to 12000 µmol m-2 s-1 PAR at 25°C

Far-red light: Far-red LEDs (peak: 740 nm)

Signal detection: PIN-photodiode protected by long-pass filter (> 700 nm), selective window amplifier

Socket for External Mini Quantum Sensor MQS-B\GFS: 0 to 22000 µmol m-2 s-1

Measured and calculated parameters: F, Fm, Fm’, Fo, Fo’, Fv/Fm (max. PS II quantum yield), Y(II) (effective PS II quantum yield), ETR, Y(NPQ), NPQ, qN, qP, qL.

Internal PAR Sensor: independent determination of blue, red, and saturating light pulse intensity

Leaf area: 8 cm2

Power consumption: 48 W max. (during saturating light pulse), power supply via Standard Measuring Head 3010-S

Operating temperature: -5 to +50 °C

Dimensions: 7.5 cm x 6 cm x 8 cm (L x W x H)

Weight: 225 g

Fiberoptics PAM-Fluorometer 3050-F

Design: PAM chlorophyll fluorometer enclosed in a metal tube, which can be connected to the Standard Measuring Head 3010-S. Measurement via an optical fiber, entering the leaf chamber of the Standard Measuring Head 3010-S through an air-tight connection

Measuring light: Blue LED (peak: 450 nm), modulation frequency: 10 and 500 Hz. PAR at 2 mm distance and ML-Ampl. 10: Ca. 0.3 μmol m-2 s-1 with low frequency, 15 μmol m-2 s-1 with high frequency

Saturating light: Blue LED (peak: 450 nm). At 1 mm distance: Typ. 11000 μmol m-2 s-1. At 2 mm: Typ. 6000 μmol m-2 s-1

Far-red light: LED (peak: 730 nm)

Signal detection: PIN-photodiode protected by a long pass filter (transmission=50% typ. at 645 nm), selective window amplifier

Measured and calculated parameters: F, Fm, Fm’, Fo, Fo’, Fv/Fm (max. PS II quantum yield), Y(II) (effective PS II quantum yield), ETR, Y(NPQ), NPQ, qN, qP, qL.

Power consumption: 0.25 W continuously, 6.5 W (during saturating light pulse), supplied via Standard Measuring Head 3010-S

Operating temperature: -5 to 45 °C

Dimension of light guide: Length: 21 cm,
diameter: 1.5 mm

Dimensions of housing: Length: 20 cm,
diameter: 3 cm

Weight: 150 g

Oxygen Sensor 3085-O2

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

Dark Leaf Clips 3010-DLC

Design: For darkening leaf samples in the field, made from plastic material, with sliding shutters, positioning aid and stainless steel clips

Weight: 11g