Chlorophyll Meter
Introduction about chlorophyll Meter: A chlorophyll meter can instantly measure the relative chlorophyll content or "greenness" of a plant. The chlorophyll content in a plant's leaves indicates the condition of the plant itself. The leaves of a well-growing plant will contain more chlorophyll. The content of chlorophyll is the same as that of nitrogen in the leaves. There is a very close relationship with the content, so the chlorophyll measurement value can also indicate the real nitro demand of the plant. Through this instrument, it is beneficial to apply nitrogen fertilizer reasonably, improve the utilization rate of nitrogen, and protect the environment (to prevent the application of excessive nitrogen fertilizer and pollute the environment, especially the water source) SPAD-502 PLUS chlorophyll Meter can measure relative content of chlorophyll,non-destructive to leaves. Measured datum will be displayed in trend graph. It can be used to enhance the utilization rate of nitrogen fertilizer.| Measuring mode: | 2 wavelengths optical density difference |
| Measuring area: | 2 mm×3 mm |
| Measurement subject: | Crop leaves |
| Subject thickness | 1.2mm |
| Maximum Subject insertion depth | 12 mm (with stopper having position adjustable from 0 to 6 mm) |
| Light source | LED Elements |
| Sensor: | Silicon semiconductor photodiode |
| Display mode: | LCD, 4 decimal places, tendency chart |
| Measuring range: | -9.9 to 199.9 SPAD units |
| Memory capacity: | 30datum, automatically calculate and display average value |
| Power: | 2 AA batteries (1.5V) |
| Battery life: | More than 20,000 times Test |
| interval: | 2s |
| Accuracy: | Within ±1.0 SPAD units (for SPAD value between 0 and 50 under normal temperature) |
| Repeatability: | Within ±0.3 SPAD units (for SPAD value between 0 and 50) |
| Reproducibility: | Within ±0.5 SPAD units (for SPAD value between 0 and 50) |
| Working environment: | 0-50°C |
| Temperature drift: | ± 0.04 units/°C |
| Humidity range: | Relative humidity of 85% or less |
| Other functions: | alarm; calibration |
| Weight: | 0.8KG |
| Size: | 23*19*11CM |
| Warranty | 1 year |
| Accessories: | Sliding depth stop, Carry Strap; 2 AA-size alkaline batteries; Soft case; Reading checker - User and maintenance manual with electrical diagram in hard copy in English in English |