Chlorophyll Meter Spad-502Plus

Spesifikasi

Measurement Subject Crop leaves
Measurement Method Optical density difference at 2 wavelengths
Measurement Area 2 x 3 mm
Subject Thickness 1,2 mm maximum
Subject Insertion Depth 12 mm (with stopper adjustable from 0 to 6 mm)
Light Source 2 LED elements
Receptor 1 SPD (silicon photodiode)
Display LCD panel showing 4-digit measurement value and 2-digit measurement number; Trend graph of values in memory
Display Range -9,9 to 199,9 SPAD units
Memory Function Stores up to 30 values; Can calculate/display average of data in memory
Power 2 AA-size alkaline batteries
Battery Performance More than 20,000 measurements (with new alkaline batteries)
Minimum Measurement Interval Approx. 2 seconds
Accuracy ±1,0 SPAD units (for SPAD value between 0,0 and 50,0); Additional accuracy check for values above 50,0 SPAD units
Repeatability Within ±0,3 SPAD units
Reproducibility Within ±0,5 SPAD units
Temperature Drift Within ±0,04 SPAD units/°C
Operation Temperature/Humidity 0 to 50°C; Relative humidity ≤85% (at 35°C) with no condensation
Storage Temperature/Humidity -20 to 55°C; Relative humidity ≤85% (at 35°C) with no condensation
Size (W x H x D) 78 x 164 x 49 mm
Weight 200g (excluding batteries)
Other Functions Warning buzzer; User compensation factor
Standard Accessories Depth stop; Strap; 2 AA-size alkaline batteries; Soft case; Reading checker

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