Spectrum Technologies SPAD 502 Plus Plus Chlorophyll Meter (2mm x 3mm)

Measurement Sample: Plant leaves

Measurement Principle: Optical density difference at two wavelengths

Measurement Area: 2mm x 3mm

Maximum Sample Thickness: 1.2mm

Insertion Depth: 12mm maximum; depth stop adjustable to depths between 0 and 6mm

Light Source: 2 LEDs (light-emitting diodes)

Receptor: 1 SPD (silicon photodiode)

Display: LCD panel showing 4-digit measurement value (-9.9 to 199.9) and 2-digit data number

Data Memory: Space for 30 data

Measurements: Automatically taken when measuring head is closed.

Power Source: 2 AA-size 1.5V alkaline-manganese

Battery Life: More than 20,000 measurements per set of 2 alkaline-manganese batteries

Minimum Interval Between Measurements: Less than 2 seconds

Accuracy: Within ± 1 SPAD* unit (at room temperature, SPAD* value between 0 and 50.0); SPAD* values of greater than 50.0 may be less accurate and will cause "*" to appear.

Repeatability: Within ± 0.3 SPAD* units (SPAD* value between 0 and 50.0)

Reproducibility: Within ± 0.5 SPAD* units (SPAD* value between 0 and 50.0)

Temperature Drift: Less than ± 0.04 SPAD* units/°C

Operating Condition: 0 to 50°C (32 to 122°F); relative humidity less than 85% at 35°C with no condensation

Storage Condition: -20 to 55°C (-4 to 131°F); relative humidity less than 85% at 35°C with no condensation

Other: Buzzer (single beep for measurement complete, series of beeps for error); function for inputting compensation value

Dimensions (L x W x D): 164 x 78 x 49mm

Weight: 200g (without batteries)

Standard Accessories: Sliding depth stop; carrying strap; soft case; 2 AA-size batteries; reading checker

*SPAD values are defined by Konica Minolta to indicate the relative amount of chlorophyll present in plant leaves. Specifications subject to change without notice

Quick Start Guide

Manual

Catalog

The SPAD Plus Chlorophyll Meter with Data Logger instantly measures chlorophyll content or "greenness" of your plants to reduce the risk of yield limiting deficiencies or costly overfertilizing. Clamp the meter over leafy tissue and receive an indexed chlorophyll content reading in less than 2 seconds. Includes hard carrying case and batteries.