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atLEAF^® CHL BLUE chlorophyll meter

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• Mobile app
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• atLEAFSoft Software
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What is it?

atLEAF CHL BLUE is a powerful, handheld, easy to use device with USB and Bluetooth connections for noninvasively measuring the relative chlorophyll content of green leaf plants. Chlorophyll content can be an indicator of the plant’s condition.

How does it work?

Plant relative chlorophyll concentration is measured by inserting a leaf into the device aperture. Green leaves of up to 0.1 inch (3mm) thickness can be measured. It only takes one press of the key to perform a basic measurement.

By utilizing the four atLEAF CHL BLUE keys you can:

assign species names to the measurements; device can store up to 490 names

view up to 9,554 measurements stored in the device’s memory

delete the most recently performed measurement

delete all measurements

transfer plant names to the device or measurements to a computer using the USB mode

display sensor temperature in °F and °C

display time (*)

perform and show average on selectable number of stored measurements

Each performed measure has associated device time and sensor temperature (*).

Specifications

Measuring System	Optical density difference at 2 wavelengths (640nm and 940nm)
Keys	4 keys to operate all functions; simple, one-key operation to perform measurements only
Display	2 lines x 16 characters
Data Memory Capacity	9,554 measurements composed by value and associated species name, time and temperature (*); 490 names up to 32 characters long (28 characters displayed)
Power Source	2 AA (1.5V) batteries
Battery Life	5,000-30,000 measures, depending on use and batteries type
Time to perform a measure	Less than 1 sec
Dimensions (W x D x H)	6.9 x 2 x 1.8 inches (175 x 50 x 45 mm)
Weight	6.2oz (175g), not including batteries
Interfaces	USB with software for Windows (atLEAFSoft version 1.26 or greater) Bluetooth Low Energy (BLE) with free   Mobile atLEAF App Current mobile devices are commonly released with hardware and software support for Bluetooth Low Energy. Check if your mobile supports Bluetooth LE. (**)
Auto power off	after 1 minute of inactivity (4 minutes in USB mode)
Display language	The device display language can be changed with atLEAFSoft PRO (see more)

(*) atLEAF App allows to sync date & time on device and to download temperature associated with measure, while atLEAFSoft PRO software is required to sync the device time with PC time and to transfer the measurement temperature to PC

Each atLEAF device is assembled, tested and calibrated in the United States.

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Download for free the atLEAF App to see commands and functions available on it.

Following is a list of some available functions:

When measures are performed remotely through the mobile, they are stored on the mobile storage area. Depending both on the mobile features and on the app settings they can be stored with the following values:

CHL measure value

atLEAF device temperature

measure name selected on mobile

latitude and longitude coordinates of the mobile

By enabling a setting on the app, the remotely performed measures can also be stored on the atLEAF CHL BLUE device as: CHL measure value, temperature and device time. These values can be downloaded through USB to a PC with the atLEAFSoft software (*).

App screenshots

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