(30-160 MM)

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The FI-LM Sensor enables to monitor growth of large size fruits as well as variations of their diameter in submillimeter range. Two phenomena affect diurnal behavior of fruit diameter: growth and water balance of a plant. A growth component is dominant in most of cases (see Fig.1 below). However, some fruits may loose water or decelerate their growth in result of water stress , lack of light or daytime water loss (see Fig. 2 below). Two features of the daily fruit growth curve are to be noted: a diurnal form and daily maximums trend that is growth rate). 
Thus, the FI-LM sensor allows investigating intimate effects of environmental factors on water balance and growth of fruits


Fig 1. Seasonal growth records of two Pomelit fruits made with the use of FI-LM sensor. Daily variations of fruit size are still visible on this large-scale chart.

Fig 2. A record of melon growth. Distinct daily variations of size were observed as the melon was decelerating the growth rate


The FI-LM Fruit Sensor includes a LVDT-based sensor mounted on special clip and a dc powered LVDT signal conditioner with optional power adapter for unipolar power supply.


Linear Measurement Range: 30-160 mm
Output: 0-2 V or 4-20 mA (optional)
Output Temperature Coefficient: <200 ppm/?C FS
Supply Voltage: 15 Vdc 15%
Power adapter operates on 10 to 30 Vdc
Dimensions: 170 x 100 x 20 mm (sensor approx.)
120 x 70 x 37 mm (signal conditioner)
Weight of the sensor: