“HOVERLABS” Chlorophyll Meter (MODEL: HVS-CM035)
“HOVERLABS” Chlorophyll Meter
(MODEL: HVS-CM035)
The HVS-CM035 serves in a wide variety of plant applications. Through its history, the HVS-CM035 Series has established itself as a leading brand in chlorophyll measurement across the world. It has been serving researchers and growers, enabling them to perform field tests quickly and easily. The HVS-CM035 series has been used for various kinds of plants of and its applications are still growing. The HVS-CM035 determines the relative amount of chloro-phyll present by measuring the absorbance of the leaf in two wavelength regions. The graph below shows the spectrol absorbance of chlorophyll extracted from two leaf sample using 80%acetone. From the diagram, it can be seen that chlorophyll has absorbance peaks in the blue (400-500 nm) and red (600-700 nm) regions, with no absorbance in the near-infrared region. To take advantage of this characteristic of chlorophyll, the HVS-CM035 measures the absorbances of the leaf in the red and near-infrared regions. Using these two absorbances, the meter calculates a numerical Chlorophyll Meter value which is proportional to the amount of chlorophyll present in the leaf.
TECHNICAL SPECIFICATIONS:
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Type |
Chlorophyll Meter HVS-CM035 |
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Measurement subject |
Crop leaves |
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Measurement method |
Optical density difference at 2 wavelengths |
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Measurement area |
2 mmx3 mm |
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Subject thickness |
1.2 mm maximum |
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Subject insertion depth |
12 mm (with stopper having position adjustable from 0 to 6 mm) |
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Light source |
2 LED elements |
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Receptor |
1 SPD (silicon photodiode) |
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Display |
LCD panel showing 4-digit measurement value (values shown to first decimal place) and 2-digit number of measurements; Trend graph of values in memory can also be shown. |
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Display Range: |
-9.9 to 199.9 CM units |
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Memory function: |
Memory capacity for up to 30 values; Calculation/display of average of data in memory also possible |
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Power source |
2 AA-size alkaline batteries |
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Battery life |
More than 20,000measurements (when using new alkaline batteries under Konica Minolta test conditions) |
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Minimum interval between measurements |
Approx. 2 seconds |
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Accuracy |
Eithin +1.0 CM units (for CM value between 0.0 and 50.0 under normal temperature/ humidity) “*”added to display when measurement exceeds 50.0 CM units. |
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Repeatability |
Within +0.3 CM units |
For CM value between 0.00 and 50.0 (with no change in sample position) |
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Reproducibility |
Within +0.5 CM units |
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Temperature drift |
Within +0.4 CM units/oC |
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Operating temperature/ humidity range |
0 to 50oC; Relative humidity of 85% or less (at 35oC) with no condensation |
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Storage temperature/ humidity range |
-20 to 55oC; Relative humidity of 85% or less (at 35oC) with no condensation |
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Size; Weight |
78(W) x 164(H) x 49(D) mm, 200 g (excluding batteries) |
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Other |
Warning buzzer; User compensation factor |
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Standard accessories |
Depth stop; Strap; 2 AA-size alkaline batteries; Soft case; Reading checker |
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