WALZ Photosynthesis Instruments
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MC-MQS/OVV Microscopy Quantum Sensor

Product

Microscopy irradiation sensor

  • Overview
  • Specifications
MC-MQS/OVV microscopy quantum sensor with BNC cable
MC-MQS/OVV microscopy quantum sensor in microscope-slide format, top view showing the diffuser locator

The MC-MQS/OVV is a quantum sensor built in the format of a microscope slide. It measures photosynthetically active radiation as photon flux density (PPFD, µmol m⁻² s⁻¹) directly at the specimen plane - the position a sample would occupy on the microscope stage.

Sensor design

The sensor body has the outline of a microscope slide (76 × 26 × 5.5 mm), so it can be mounted on any conventional stage and moved with the stage controls. Light is collected through a diffuser of 0.2 mm diameter. A locator mark on the housing makes the position of the pinhole visible under the objective, so the sensor can be centred in the light spot without searching. The diffuser consists of a resin containing a fluorescence dye, which gives the sensor its quantum response over the PAR range.

Two versions

The MC-MQS/OVV is the bare sensor with a BNC connector and is read out directly by the ULM-500 Universal Light Meter. The MC-MQS set adds a preamplifier and is the configuration used with the MICROSCOPY-PAM.

Version
MC-MQS

This set consists of the microscopy sensor MC-MQS/OVV and a preamplifier. In this configuration it can be connected to the MICROSCOPY-PAM system.

MC-MQS/OVV microscopy quantum sensor with BNC cable
Version
MC-MQS/OVV

Microscopy sensor without preamplifier. This part can directly be connected to the ULM-500 via BNC connector.

MC-MQS/OVV Microscopy Quantum Sensor

Design of sensor

Microscopy quantum sensor for PPFD (photosynthetical photon flux density) measurement.

Sensor housing

Black anodized aluminum housing

Diffuser material

Resin with fluorescence dye

Signal detection

High stability silicon photovoltaic. Signal output typically 1.5 μA / (1000 μmol m-2 s-1)

Temperature coefficient of photodiode

0.01 %/K

Absolute calibration

± 5 %

Operating temperature

0 °C … + 40 °C

Cable length

55 cm

Connector

BNC

Power supply

Not required

Size

Height: 5.5 mm
Length: 76 mm
Width: 26 mm
Diffuser diameter: 0.2 mm

Weight
36 g

Usage

Laboratory
Light Measurement

Highlights

  • shaped like a microscope slide for microscopy applications
  • extremely small sensor pinhole for high magnifications
  • clearly visible locator

Downloads

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Innovation and tradition: These are the driving forces which have made of Heinz Walz GmbH one of the world’s top producers of highly sophisticated photosynthesis measuring systems.

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