3010-GWK1

Version:

Product

Gas-Exchange Chamber

The Gas-Exchange Chamber 3010-GWK1 is designed to investigate medium-sized samples like small branches, big leaves, or fruits under well-defined climate controlled conditions. To provide this, the 3010-GWK1 chamber has a highly efficient temperature control, a transversal fan for fast ventilation, and pneumatic connectors for air-supply.

Internally there are sensors to accurately monitor temperature at three sites, air humidity, and PAR (photosynthetically active radiation). Externally the chamber has additional sensors for temperature and PAR.

The LED-Panel RGBW-L084 provides illumination for the Gas-Exchange Chamber 3010-GWK1. It has a densely packed array of high-power color-LEDs for uniform light distribution. Individual adjustable colors Red, Green, Blue and White exhibit together a maximum output of 2000 μmol s^-1 m^-2 or better.

For CO₂ gas-exchange measurements, the chamber can be operated as part of the the GFS-3000 in replacement of the Standard Measuring Head 3010-S. Otherwise the chamber can be operated directly by a computer using an optional interface. On request, the top part of the chamber will be manufactured to match the requirements for particular samples.

Please consider using Gas-Exchange Chamber 3010-GWK1 in combination with the GFS-3000, that the maximum flow of the GFS-3000 is 1.9 l/min. Leaf samples producing too much humidity can limit the systems capabilities.

The 3010-GWK1 also facilitates the option of studying spatially resolved chlorophyll fluorescence under defined conditions, because its sample area matches the imaging area of the IMAGING-PAM M-Series MAXI version.

General Features 3010-GWK1

Temperature

The 3010-GWK1 chamber is equipped with four temperature sensors: Three Pt100-type sensors measuring temperature of inside air, near the cooling elements and externally. The fourth temperature sensor is a thermocouple for leaf temperature measurements.

Temperature Control Modes

Temperature control can be switched between three modes: Constant temperature of chamber air, constant leaf temperature, or temperature variation parallel to ambient temperature with an adjustable offset. Temperature profiles can be realized with user-programs. Due to the highly efficient Peltier technology, the cuvette temperature can be regulated fast and accurately.

Gas-Exchange Chamber 3010-GWK1, top view showing sample area and sensors

Light

The 3010-GWK1 chamber has two sensors for photosynthetic active radiation (PAR): A cosine corrected sensor (MQS/B-GWK1) measures ambient PAR at sample level outside the chamber, and a special miniaturized sensor measuring PAR inside the chamber.

Humidity

A maintenance-free sensor measuring the relative humidity with an accuracy ±1.5% r.h. is located inside the gas-exchange chamber.

Ventilation

The gas-exchange chamber features a transversal fan for effective ventilation. Its speed is adjustable in 5 steps.

Operation

The 3010-GKWK1 chamber can be controlled by the GFS-3000 or by a laptop using an optional interface. In both configurations, the 3010-GKWK1 chamber requires its own power supply.

Scientific Publications using Walz Devices

Source: Google Scholar.
Keywords: (Walz OR Waltz) Effeltrich.
Date: June 22, 2026.

Ʃ = 19642

Per Year

Source: Google Scholar.
Keywords: (Walz OR Waltz) Effeltrich.
Date: June 22, 2026.

Ʃ = 19642

Year

Selected Publications

Heat-induced F₀-fluorescence rise is not an indicator of severe tissue necrosis in thermotolerance assays of young and mature leaves of a tropical tree species, Calophyllum inophyllum.

Winter K, Garcia M, Virgo A

Photosynthetica 63: 46-50

Go to publication

Trees use exogenous sugars for growth, but excess triggers negative feedback reducing photosynthetic carbon gain.

Zhang Y-L, Gessler A, Lehmann MM, Saurer M, Diao H, Ris Lambers JH, Schaub M, Zhu Y, Rigling A, Li M-H

Tree Physiology 45: tpaf092

Go to publication

Contrasting photosynthetic, stomatal, and mesophyll mechanisms drive common reductions in leaf water-use efficiency under blue light.

Diao H, Lehmann MM, Holloway-Phillips M, Gessler A, Siegwolf RTW, Saurer M

Journal of Experimental Botany 18: 5512-5527

Go to publication

Analysis of leaf CO₂ assimilation, CO and CH₄ release under different environmental settings.

Casanova D, Bruhn D, Mikkelsen T

bioRxiv

Go to publication

Heat tolerance of a tropical-subtropical rainforest tree species Polyscias elegans: time-dependent dynamic responses of physiological thermostability and biochemistry

Zhu L, Scafaro AP, Vierling E, Ball MC, Posch BC, Stock F, Atkin OK

New Phytologist 241: 715-731

Go to publication

A novel application of laser speckle imaging technique for prediction of hypoxic stress of apples.

Pieczywek PM, Nosalewicz A, Zdunek A

Plant Methods 20: 147

Go to publication

Contactless estimation of apple fruit respiration rate using machine learning models based on laser speckle imaging

Pieczywek PM, Nosalewicz A, Zdunek A

Postharvest Biology and Technology 207: 112626

Go to publication

Low oxygen environment effect on the tomato cell wall composition during the fruit ripening process.

Leszczuk A, Kutyrieva-Nowak N, Nowak A, Nosalewicz A, Zdunek A

BMC Plant Biology 24: 503

Go to publication

Uncoupling of stomatal conductance and photosynthesis at high temperature: mechanistic insights from online stable isotope techniques.

Diao H, Cernusak LA, Saurer M, Gessler A, Siegwolf RTW, Lehmann MM

New Phytologist 241: 2366-2378

Go to publication

Dry inside: progressive unsaturation within leaves with increasing vapour pressure deficit affects estimation of key leaf gas exchange parameters.

Diao H, Cernusak LA, Saurer M, Gessler A, Siegwolf RTW, Lehmann MM

New Phytologist 244: 1275-1287

Go to publication

The chlorophyll fluorescence parameter F_V/F_M correlates with loss of grain yield after severe drought in three wheat genotypes grown at two CO₂ concentrations.

Sommer SG, Han E, Li X, Rosenqvist E, Liu F

Plants 12: 436

Go to publication

Contrasting response of water use efficiency to soil moisture availability: from leaf to ecosystem in an arid oasis.

Han T, Feng Q, Ye T, Liu W, Ma J, Zhao C, Yang L, Zhang J, Li H

Ecological Indicators 147: 109964

Go to publication

3010-GWK1

Design

DC power supply unit for laboratory use

Output Voltage

16 V DC

Output power

135 W

Mains power supply

100 to 240 V AC, 50/60 Hz

Operating temperature

0 to 60 °C

Dimensions

20 cm x 8 cm x 5 cm (L x W x H)

Weight

1 kg

Adapter IMAG‐MAX/GWK1 for IMAGING-PAM (MAXI-Version) on Gas Exchange Chamber (3010-GWK1)

Design

Adapter Plate with legs and eye protection for positioning IMAG-MAXI Head on 3010-GWK1

Dimensions

18.5 cm x 20 cm 17 cm (L x W x H)

Weight

856 g

Accessories

Design

LED-Panel fitting to the gas exchange chamber 3010-GWK1: Illuminated area 14 cm x 12 cm.
LED Colors: red, green, blue and white; maximum output (all colors together): 2000 μmol m^-2 s^-1 or better.
Air cooled; with separate power supply. Colors can be mixed with red, green, blue, and white in steps of intensity 0 to 100 or more; total intensity can be chosen in steps of 0.1%; operation with GFS-Win software via RS485 connector.

RGBW High Power LEDs

Blue: 455 ±10 nm, HBW (half bandwidth) 440 - 460 nm
Green: 525 ±10 nm, HBW 500 - 545 nm
Red: 625 ±5 nm, HBW 620 - 640 nm
White: 450 ±10 nm, HBW 435 - 460 nm; second peak at 590 ±25 nm, HBW 510 - 640 nm with tail up to 800 nm

Homogeneity of light distribution

± 10% within the 14x12 cm area or ± 3 μmol m^-2 s^-1 (whatever is bigger).

PAR measurement

PAR sensors with multiplier between -50 and -800 μmol m^-2 s^-1 per μA result in a range of 0 to 6400 μmol m^-2 s^-1, resolution: 1 μmol m^-2 s^-1

Fuse

10 A slow-blow fuse, 5x20 mm

Input voltage

16 V, 8 A

Voltage inside

up to 36 V

Power supply

AC Power Supply 3020-N for laboratory operation

Operating temperature

-5 to 45 °C

Homogeneity of light distribution

± 10% within the 14x12 cm area or ± 3 μmol m^-2 s^-1 (whatever is bigger).

Dimension

27 cm x 19 cm x 13 cm L x W x H

Weight

2.8 kg

Design

Chamber consisting of an aluminum cooling block with two pneumatic connectors and transversal fan, flat polymer lid or user-designed cuvette; micro-processor controlled electronics with connectors for temperature sensors, humidity sensor, PAR-sensors, GFS-3000 or 3010-I/Box connection, power-input; cooled with Peltier-cooling units and ventilator

Measurement of chamber and ambient temperatures

Pt 100 type A, range -10 to 50 °C, accuracy ±0.1 °C. An extended version with a range from -10 to 75°C is available

Leaf temp. measurement

Thermocouple, range: -10 to 50 °C, accuracy ±0.2 °C, range of extended version: -10 to 75°C

Temperature control

Three modes of temperature control: Constant cuvette temperature, constant leaf temperature, follow ambient temperature with an offset

Temperature control range

-10°C to 50°C depending on ambient temperature and radiative heat intake.
With 4l volume, dark: 10 K below ambient temperature and 25 K above ambient temperature.
With flat lid, dark: 20 K below ambient temperature and 35 K above ambient temperature.
Range of extended version: -10 to 75°C

Relative humidity sensor

Range: 0 to 100% r.h., accuracy: ±1.5% (5 to 95% r.h.), T90 response time (11 to 75% r.h.): <10 s

External miniature quantum sensor

Mini Quantum Sensor MQS-B/GWK1 outside of chamber. Selective PAR measurement, range 0 to 2500 μmol m-2 s-1, accuracy ±5%, cosine corrected (measuring photosynthetic photon flux density PPFD)

Internal light sensor

Selective PAR measurement, range 0 to 2500 μmol m-2 s-1 PAR, accuracy ±10%, two sensors, one in the upper and one in the lower part of the cuvette

Cuvette ventilation system

Transversal fan

Maximum sample area

14 cm x 10 cm

Pneumatic connectors

Hose fittings for 10/8 mm (OD/ID) tubing

Inner volume of the cooling unit alone

840 ml (up to edge of aluminum frame)

Power supply

AC Power Supply 3020-N for laboratory operation

Power consumption

Max. 45 W

Operating temperature

-5 to 45 °C

Dimension of cooling unit

26 cm x 25 cm x 19.5 cm (L x W x H)

Weight

6.9 kg including cables and tubes

Cuvette Standard

Flat lid (inside: 16 cm x 14.5 cm, outside: 18.5 cm x 17 cm, volume: 320 ml); other design available on customer request

Optional glas lid

3010-GWK1/G, aluminium frame 18.4 cm x 17 cm x 2 cm with glass surface 0.4 cm and opening for petiolus

Optional interface

3010-I/Box for stand-alone operation of the GWK1

Design

USB-RS485 converter with galvanic isolation (1kV) and connection cables. Serves to establish a connection between the COMP socket and the USB port of a PC. Also suitable for direct operation of the Standard Measuring Head 3010-S, the DUAL-PAM Gas-Exchange Cuvette 3010-DUAL, the Gas-Exchange Chamber 3010-GWK1, the LED-Panel RGBW-L084, or the Control Units 3000-C, 3100-C or 3200-C with external PC.

Dimensions

box: 8 cm x 4 cm x 2 cm attached cable 30 cm, USB-device cable: 1.5 m