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Spad-502plus Good Quality Handheld Portable Chlorophyll Meter1
Analysis Instrument, Element Analyzer, Portable Leaf Area Meter, Digital Chlorophyll Meter
WANT Balance Instrument Co., Ltd.
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Product Description 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.Introduction:1.Measures leaf chlorophyll, an important indicator of plant health.The SPAD-502Plus performs quick measurements of the chlorophyll content ofleaves without damaging the leaf. Its lightweight, splashproof design make it ideal formeasurements in the field.2.Non-destructive measurement of plant chlorophyllThe SPAD-502Plus enables quick, easy measurement of the chlorophyll content ofplant leaves without damaging the leaf. Chlorophyll content is one indicator of planthealth, and can be used to optimize the timing and quantity of applying additionalfertilizer to provide larger crop yields of higher quality with lower environmental load.3.FeaturesProduct OverviewQuick, easy measurement of chlorophyll levels in plant leaves without damaging the leaf.Measurements are taken by just closing the measuring head on the leaf. Since the leafis not cut off or damaged in any other way, the same leaf can be measured as the plant grows.Trend graph display:Up to 30 measurements can be stored in memory and displayed on a trend graph, so that changes in measurements over time can be seen and abnormal values can be noticed at a glance.Water-resistantThe SPAD-502Plus is water-resistant (IPX-4) so it can be used outdoors even in the rain.* It is not immersible, and should not be washed with water.Compact and lightweight for portabilityThe SPAD-502Plus is small enough to fit in a pocket and weighs only 200g, so it can be taken anywhere.Low power consumptionThe SPAD-502Plus uses LED light sources, resulting in extremely low power consumption, with approximately 20,000 measurements from one set of fresh alkaline-manganese batteries.Principal ApplicationsMonitoring of growth and health of plantsThe SPAD-502Plus can be used to monitor the growth and health status of a wide variety of agricultural products, including wheat, rice, corn, cotton, etc.Nitrogen fertilization optimizationThe SPAD-502Plus can be used for determining when and how much nitrogen fertilizer should be provided to plants. Optimizing fertilization in this way leads to not only greater yields of higher quality, but also results in less over-fertilization,reducing environmental contamination due to the leaching of excess fertilizer into the soil and underground water.SpecificationMeasurement methodOptical density difference at two wavelengthsMeasurement area2 mm×3 mmSubject thickness1.2 mm maximumSubject insertion depth12 mm (with stopper having position adjustable from 0 to 6 mm)Light source2 LED elementsReceptor1 SPD (silicon photodiode)DisplayLCD 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 unitsMemory functionMemory capacity for up to 30 values; Calculation/display of average of data in memory also possiblePower source2 AA-size alkaline batteriesBattery lifeMore than 20,000 measurements (when using new alkaline batteries under Konica Minolta test conditions)Minimum interval between measurementsApprox. 2 secondsAccuracyWithin ±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 unitsRepeatabilityWithin ±0.3 SPAD units (SPAD value between 0.0 and 50.0 with no change in sampleposition)Dimensions78 (W) ×164 (H) ×49 (D) mmWeight200 g (excluding batteries)
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