19.04 Automatic Porometer Model AP 4

Categories Crops , Photosynthesis, Chlorophyll & Respiration

The loss of water (evaporation) by plant leaves is regulated by the stomata (pores) of the leaves, as CO2 absorption is necessary for photosynthesis.
Eijkelkamp 19.04 Automatic Porometer an important indicator for the physiological condition of the plants.
The opening of the stomata can be interpreted as the resistance against gas diffusion (in s/cm) and is measured using the porometer.
Fitted with an automated, fast measuring cycle which yields temperature compensated measuring results.
Since the stomata are sensitive to the presence of the porometers sensor head, measurements are executed within less than 15 seconds.
Has a measuring range of 0 - 30 s/cm and is suitable for wide and narrow leaves.
Has an internal memory for approximately 1500 measurements, including notes.
Data can be transmitted via an RS232 interface to a printer or PC.
Provided with a clearly readable display and function keys.
In preparation of a series of measurements, the porometer can be calibrated fast and easy by using software and a calibration plate.
Supplied including sensor head, calibration plate, RS232 cable, software, charging apparatus and carrying bag.

Parameter	Reading range	Resolution ^[1]	Accuracy ^[2]	Test conditions ^[5] Reading range
Conductance	5.0 -1200 mmol m^-2 s^-1	0.1 – 10	± 10 %	5 – 800 mmol m^-2 s^-1
Conductance	5.0 -1200 mmol m^-2 s^-1	0.1 – 10	± 20 %	800 – 1200 mmol m^-2 s^-1
Conductance	0.25 – 30.0 mm s^-1	0.01 – 0.1	± 10%	0.25 – 20 mm s^-1
Conductance	0.25 – 30.0 mm s^-1	0.01 – 0.1	± 20 %	20-30 mm s^-1
Resistance	0.2 – 40 s cm^-1	0.01 – 0.1	± 10 %	0.5 – 40 s cm^-1
Resistance	0.2 – 40 s cm^-1	0.01 – 0.1	± 0.2 s cm^-1	0.2 – 0.5 s cm^-1
RH	0 – 100%	0.1	± 4%