4
About your eXact
®
Micro 20 photometer
In order to save power, the meter is designed to turn off after 5 minutes (timed from the last button
pressed). Should the meter turn off in the middle of a test, the last stored zero in the meter will remain
valid when the meter is turned on again. Also, the test result is stored in memory for easy retrieval.
The eXact
®
Micro 20 meter is controlled by four buttons:
Version Serial Numbers Instruction Manual
v2.0 M20BTA00001 – M20BTA00483 sensafe.com/instruction-manuals/
v3.1 M20BTA00484 and up This manual
When fi rst pressed, the ZERO/ON button powers the meter. When the meter is on
and this button is pressed, it zeros the sample in the cell. It is recommended that
each new water sample analyzed is zeroed before testing, to maximize sensitivity
and accuracy.
With each press, the SELECT button advances through the Select Group 1 through
7. The current Select Group will appear as a small digit to the right of the selected
MENU (example: ).
With each press, the MENU button advances through the tests available in the
current Select Group. Each test menu can store up to 20 results. To retrieve the
stored results, go to the desired test using the MENU key. When the desired test is
displayed, press and hold down the MENU key. Continue holding down the MENU
key to scroll the stored results for that test, starting with the most recent result. The
meter will display, from memory, the last 20 readings in sequence beginning with
–20, which is the latest result, followed by 19, which is the 2nd latest result, etc; and
fi nally –01, which is the oldest result retained. Only the last 20 readings are stored in
each menu.
When READ is pressed once, this button starts the timer for the parameter being
tested. When pressed a second time the meter exits the timer and immediately
prepares to measure the sample. The meter will simultaneously store the
measurement in memory.
If the parameter being measured is below or above the detection range, the display
will show “LO” (Under Range) or “HI” (Over Range), respectively. This feature is menu
specifi c and does not apply to all parameters.
Micro 20 Version
About Bluetooth
®
Bluetooth
®
is a low–power wireless networking standard which uses short radio waves to allow
electronic devices to communicate with each other. The eXact
®
Micro 20 with Bluetooth
®
comes
standard with Bluetooth
®
4.0 technology, a class 2 device with a wireless working distance of up
to 30 feet (10 meters) and a 2.1 Mbps data transfer rate. This allows a seamless transfer of data
between a smart device and the eXact
®
Micro 20 with Bluetooth
®
.
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