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Chlorophyll Meter "Konica Minolta" Model SPAD 502Plus
[SPAD 502Plus]
$1,999.99

CHLOROPHYLL METER

SPAD-502Plus

 

A lightweight handheld meter for measuring the chlorophyll content of leaves without causing damage to plants.

 

The SPAD-502Plus is  a compact meter

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.

 

Wheat, Rice, Corn, Cotton and beyond

The SPAD-502Plus serves in a wide variety of plant applications. Through its history, the SPAD series has established itself as a leading brand

in chlorophyll measurement across the world. It has been serving researchers and grower, enabling them to perform field tests quickly

and easily. The SPAD series has been used for various kinds of plants and its applications are still growing.

 

Features

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 AA-size alkaline-manganese

batteries can provide approximately 20,000 measurements.

Small measuring area

The measuring area is only 2x3 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.

 

Specifications

Measurement subject

Crop 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

12 mm (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

2 AA-size alkaline batteries

Battery performance

More than 20,000 measurements (when using new alkaline batteries under Konica Minolta test conditions)

Minimum measurement interval

Approx. 2 seconds

Accuracy

Within +/-1.0 SPAD units (for SPAD value between 0.0 and 50.0 under normal temperature/humidity)

“*” added to display when measurement exceeds 50.0 SPAD units

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

Temperature drift

Within +/-0.04 SPAD units/C

Operation 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 (WxHxD), Weight

78 x 164 x 49 mm, 200 g (excluding batteries)

Other functions

Warning buzzer; User compensation factor

Standard accessories

Depth stop; Strap; 2 AA-size alkaline batteries; Soft case; Reading checker

 

This product was added to our catalog on Wednesday 23 August, 2017.
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