Pocket PEA control unit_1315889
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Pocket PEA control unit

$6,968.50

The price is inclusive of GST
Dimensions175 (l) x 75 (w) x 35mm (d). Weight: 250g
CommunicationsBluetooth wireless communications
Operating conditions0 - 40oC. Non-condensing humidity
BatteryEnvironmentally friendly (0% lead, cadmium mercury) lithium polymer 3.7V, 570 mAhr
Battery ChargerIntegral switch mode charger 8-13.5V input (nominal 12V input)
Display2 line x 12 character LCD display
IlluminationOptically stabilised, focused, ultra-bright red LED with NIR short pass cut-off filters. Peak
Max. intensity at leaf surfaceUp to 3500 μmol m-2 s-1
DetectorFast response PIN photodiode with RG9 long pass filter
ElectronicsHigh performance 16 bit microcontroller, 16 bit resolution A/D 10 μsec acquisition
Record length1, 3 or 10 seconds
Memory512Kbits non-volatile memory. Sufficient for up to 200, 10 second duration recordings
Overview
  • Ultra-portable Chlorophyll Fluorimeter
  • Rapid screening capability with single button operation & storage of up to 200 full data sets
  • Automatic calculation of parameters including Fv/Fm & OJIP analysis
  • Robust enclosure with sealed, high intensity optics
  • 100kHz sampling frequency with 16bit resolution
  • Bluetooth wireless data transfer as standard
  • Powerful Windows® data transfer & analysis software included

The Pocket PEA chlorophyll fluorimeter is suitable for teaching, research and a wide variety of commercial applications. The robust yet compact hand-held design provides ease of use and reliable operation.

Includes:

  • Pocket PEA Unit
  • 10 x Leaf Clips (PPEA/LC)
  • PEA Software
  • Carry Case
  • 230VAC Power Adapter

 

The Pocket PEA chlorophyll fluorimeter is suitable for teaching, research and a wide variety of commercial applications. The robust yet compact hand-held design provides ease of use and reliable operation.

Samples are conveniently dark adapted prior to measurement using the leafclips supplied. Single key operation fully automates the complete measurement process from data capture through to calculation and display of the key Fv/Fm and Performance Index (PI) chlorophyll fluorescence parameters.

The rapid 1 second measurement capability and 200 measurement memory capacity make the Pocket PEA an invaluable tool in large-scale plant screening programs.

The chlorophyll fluorescence signal received by the sensor during recording is digitised in the control unit using a fast 16 bit Analogue/ Digital converter ensuring excellent precision and repeatability of results. The fluorescence signal is digitised at different rates dependent upon the different phases of the induction kinetic. Initially, data is sampled at 10µs intervals for the first 300 µseconds. This provides excellent time resolution of Fo and the initial rise kinetics. The time resolution of digitisation is then switched to slower acquisition rates as the kinetics of the chlorophyll fluorescence signal slow. This process provides excellent time resolution of the overall measurement whilst minimising the size of the data set and thus maximising memory capacity.

Bluetooth wireless transfer conveniently allows records to be transferred in the field from the Pocket PEA to a suitable Bluetooth enebled PC for detailed review and analysis using our custom Windows® PC software.

The Pocket PEA optical interface is mounted directly on to the front of the Pocket PEA control unit. It consists of a single high intensity focused LED which is positioned vertically above the sample and provides up to 3500 µmols m-2s-1 intensity with a peak wavelength of 627nm at the sample surface. The light emitted from the LED is filtered using an NIR filter to block any infra red content which could be seen by the detector (known as optical breakthrough). An optical feedback circuit monitors and corrects changes in the output intensity of the LED which are caused by internal heat build up in the LED itself. The circuit also compensates for intensity changes caused by variation in ambient temperature. 

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