CM1000 FieldScout portable Chlorophyll Meter

The FIELD SCOUT CM1000TM Chlorophyll Meter senses light at wavelengths of 700 nm and 840 nm to estimate the quantity of chlorophyll in leaves. The ambient and reflected light at each wavelength is measured. Chlorophyll a absorbs 700 nm light and, as a result, the reflection of that wavelength from the leaf is reduced compared to the reflected 840 nm light. Lighthaving a wavelength of 840 nm is unaffected by leaf chlorophyll content and serves as an indication of how much light is reflected due to leaf physical characteristics such as the presence of a waxy or hairy leaf surface.

• Lasers define the target as the trigger is pressed. At a distance of 11.2 inches (28.4 cm), the field of view is 0.434 inches (1.10 cm) in diameter. At a distance of 72 inches (183 cm), the field of view increases to 7.4 inches (18.8 cm) in diameter.

• A chlorophyll index value (0 - 999) is calculated from the measured ambient and reflected light data.
• The number of samples taken and a running average of chlorophyll index values is displayed.
• Ambient light level is displayed on a scale of 0 to 9.
• The optional data-logging system records the latitude and longitude (if GPS is used), the sample number, the individual chlorophyll index reading, and the value assigned to the ambient light level.
• The recorded data is downloaded to your PC using the Field ScoutTM software included.
• The data-logged files are comma-delimited text files and can be opened and worked with in any spreadsheet, graphing, statistical, or word processing program.