Instrument Description
LCD Display
The instrument is provided with three-color backlit display to help the user get a quick and intuitive
understanding of how to use them
• Green: Measurement and setup mode
• Blue: Calibration mode
• Red: Alarm/Error
(1) — Parameter icons
(2) — Measurement reading
(3) — Automatic data storage mode
(4) — Time (appears with (5), and prompts of special
display mode)
(5) — Date (appears with (4))
(6) — Units of measurement
(7) — Temperature units (°C and °F)
(8) — Units of pH and conductivity calibration value
(appears with(9))
(9) — pH and conductivity calibration value or store
position (RM)
(10) — Storage and recall icons
M+ — Measurement to be stored icon RM — Reading to be recalled icon
(11) — Temperature value, and prompts of special display mode
(12) — Temperature compensation icons
ATC — automatic temperature compensation, MTC — manual temperature compensation
(13) — Calibration range icon
(14) — USB icon，when this icon appears, the meter connects the computer
(15) — Stability icon
(16) — Battery life
Keypad Functions
Momentary press ----- <1.5 seconds
Long press ----- >1.5 seconds
Turn on the meter
Press to turn on the meter: LCD full display → display
colors RGB test with some parameters → display the last
measurement mode.
Turn off the meter
In the measurement mode, press and hold for 2 seconds
to turn off the meter.
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