Chlorophyll SPAD Meter SPAD-502Plus USA

Chlorophyll SPAD Meter
Model: SPAD-502Plus
Brand: Konica Minolta
Origin: USA

Technical Specifications
Measurement subject: Crop / plant Leaves
Measurement method: optical density difference at 2 wavelengths
Measurement area: 2 mm x 3 mm
Subject thickness: 1.2 mm maximum
Subject insertion depth: 12mm (with stopper having position adjustable from 0 to 6 mm)
Light source: 2 LED elements
Receptor: 1 SPD (silicon photodiode)
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.
Display range: -9.9 to 199.9 SPAD units
Memory function: Memory capacity for up to 30 values; calculation/display of average of data in memory also possible
Power source: 2 AA-size alkaline batteries
Battery life: More than 20,000 measurements (when using new alkaline batteries under Konica Minolta test conditions)
Minimum interval between measurements: Appx. 2 seconds
Accuracy: within +1.0 SPAD units (for SAPD value between 0.0 and 50.0 under normal temperature/humidity)
Repeatability: within +0.3 SPAD units
Reproducibility: within +0.5 SPAD units
Temperature drift: within +0.04 SPAD units/C
Operating temperature/humidity range: 0 to 50C: Relative humidity of 85% or less (at 35C) with no condensation
Storage temperature / humidity range: -20 to 55C: Relative humidity of 85% or less (at 35C) with no condensation
Size; weight: 78(w) x 164(H) x 49(D) mm, 200g (excluding batteries) (aapx)
Other: warning buzzer; User compensation factor
Supplied complete with Standard accessories: Depth stop; Strap; 2 AA-size alkaline batteries; Soft case; Reading checker