LABEC M-PL-600 - Manual (Page 6)

In above picture：
Icon ①：RS232 communication
strument has been connected with PC, When this icon displays, the in
the PS232 communication function is open automatically.
Icon ②：Timing storage of the measurement value
（only valid for type
640） When this icon displays, the measurement value timing storage
function is open, the instrument will store the measurement data according
to set intervals.
Icon ③：Sensor diagnostics 、 、
After pH sensor calibration, the instrument will display sensor
performance：
：sensor is in good performance；
：sensor performance is so so；
：sensor is in bad performance, need to be changed
Icon④：Measurement status icon 、 ：
：when display this icon, the measurement value is in stable status,
but the instrument still goes on measurement.
：when display this icon，the measurement value is in stable
Icon ⑤：E n Err
Th gnostics function, when problems occurs
and pH temperature compensation
poising status, the value will be kept(auto ending point
function)
rror ico
e instrument has self dia
during operation, the instrument will display relative tips for error signal
and code, to remind you.
Icon ⑥：Temperature measurement
status icon
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