Handheld Chlorophyll meter

Product Details Characteristics Parameter Message

Product Details

SPAD 502 chlorophyll meter is designed to help users improve crop quality and increase crop yield by providing an indication of the amount of chlorophyll present in plant leaves. The chlorophyll content of plant leaves is related to the condition of the plant, and thus can be used to determine when additional fertilizer is necessary. By optimizing nutrient conditions, healthier plants can be grown, resulting in a larger crop yield of higher quality.

Characteristics

Trend graph display: Changes in measurement data over time can be seen, and abnormal values can be noticed at a glance.

Compact and lightweight for portability: The SPAD-502Plus is small enough to fit in a pocket and is extremely lightweight (only 200 g) so it can be easily taken anywhere.

Quick, easy measurements: Measurements are taken by simply inserting a leaf and closing the measuring head. It is not necessary to cut the leaf, so the same leaf can be measured throughout the growing process.

Water-resistant: The SPAD-502Plus is water-resistant (IPX-4), so it can be used outside even in the rain. *It is not immersible, and should not be cleaned with water.

Low power consumption: The SPAD-502Plus uses LED light sources, resulting in extremely low power consumption. One set of two AAsize alkaline-manganese batteries can provide approximately 20,000 measurements.

Small measuring area: The measuring area is only 2 x 3 mm, allowing measurements of even small leaves. A sliding depth stop is included for accurate positioning on sample leaves.

High accuracy: High measuring accuracy (± 1.0 SPAD unit for rice-plant leaves) allows close examination of growing conditions

Data memory: The SPAD-502Plus has memory space for 30 measurements. Data in memory can be recalled or deleted at a later time, and the average value of all data in memory can be automatically calculated.

Reading checker: A reading checker enables users to check that the SPAD-502 is functioning correctly and providing accurate readings.

Tags:

Portable chlorophyll meter

Parameter

Model	SPAD-502
Measurement subject	Wheat, Rice, Corn, Cotton and beyond leaves
Measuring mode	2 wavelengths optical density difference
Measuring area	2 mm×3 mm
Subject thickness	1.2mm 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 mode	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.
Measuring Range	-9.9 to 199.9 SPAD units
Memory capacity	Memory capacity for up to 30 values; Calculation/display of average of data in memory also possible
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 0.0 and 50.0 (with no change in sample position)
Reproducibility	Within ±0.5 SPAD units. For SPAD value between 0.0 and 50.0 (with no change in sample position)
Temperature drift	Within ±0.04 SPAD units/°C
Working environment	0 to 50°C; Relative humidity of 85% or less (at 35°C) with no condensation
Storage temperature/humidity range	-20 to 55°C; Relative humidity of 85% or less (at 35°C) with no condensation
Other functions	Warning buzzer; User compensation factor
Weight	0.2kg (excluding batteries)
Size	78 x 164 x 49 mm
Standard accessories	Depth stop; Strap; 2 AA-size alkaline batteries; Soft case; Reading checker

Product detail images

Message

SPAD-502 Handheld Chlorophyll meter