Non-destructive measurement of plant chlorophyll
The DCH-52P enables quick, easy measurement of the chlorophyll content of plant leaves without damaging the leaf. Chlorophyll content is one indicator of plant health, and can be used to optimize the timing and quantity of applying additional fertilizer to provide larger crop yields of higher quality with lower environmental load.
Quick, 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 leaf is 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.
The DCH-52P 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 portability
The DCH-52P is small enough to fit in a pocket and weighs only 200g, so it can be taken anywhere.
Low power consumption
The DCH-52P uses LED light sources, resulting in extremely low power consumption, with approximately 20,000 measurements from one set of fresh alkaline-manganese batteries.
Monitoring of growth and health of plants
The DCH-52P 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 optimization
The DCH-52P 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.
Optical density difference at 2 wavelengths
2 mm × 3 mm
1.2 mm maximum
Subject insertion depth
12 mm (with stopper having position adjustable from 0 to 6 mm)
2 LED elements
1 SPD (silicon photodiode)
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.
-9.9 to 199.9 DCH-52P units
Memory capacity for up to 30 values; Calculation/display of average of data in memory also possible
2 AA-size alkaline batteries
More than 20,000 measurements.
Minimum interval between measurements
Approx. 2 seconds
Within ±1.0 DCH-52P units (for DCH-52P units value between 0.0 and 50.0 under normal temperature/humidity) “*” added to display when measurement exceeds 50.0 DCH-52P units
Within ±0.3 DCH-52P units
Within ±0.5 DCH-52P units
Within ±0.04 DCH-52P unit /°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
78（W）×164（H）×49（D）mm、200g (excluding batteries)
Warning buzzer; User compensation factor
Depth stop; Strap; 2 AA-size alkaline batteries; Soft case; Reading checker