Brochure

Specications

Type Chlorophyll Meter SPAD-502Plus

Measurement subject Crop leaves

Measurement method Optical density dierence at 2 wavelengths

Measurement area 2 mm×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 rst 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 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

Operating temperature/humidity range 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

Size; Weight 78 (W) ×164 (H) ×49 (D) mm, 200 g (excluding batteries)

Other Warning buzzer; User compensation factor

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

SPAD value: Index value displayed by Konica Minolta Chlorophyll meters and having a correlation to chlorophyll density.

Specications and appearance subject to change without notice.

164

7849

(Units: mm)

Dimensions

SAFETY PRECAUTIONS

For correct use and for your safety, be sure to read the

instruction manual before using the instrument.

•

Be sure to use the specified battery. Using improper

battery may cause a re or electric shock.

Registration No. : YKA 0937154

Registration date : March 3, 1995

Registration No. : JQA-E-80027

Registration date : March 12, 1997