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KEYPAD DESCRIPTION
• ON/OFF: to turn the meter on and off.
• ZERO/CFM: to zero the meter prior to measurement, to confirm edited values or to confirm
factory calibration restore.
• READ
/TIMER: this is a multi-functional key. In measurement mode, press to make a measurement,
or press and hold for three seconds to start a pre-programmed countdown.
In GLP mode press to view the next screen.
• CAL CHECK: this is a bi-functional key. Just press to perform the validation of the meter, or press
and hold for three seconds to enter calibration mode.
• GLP/
V
: this is a bi-functional key. Just press to enter GLP mode. In calibration mode press to
edit the date and time.
OPERATING MODES
• Measurement mode: default operation mode, enables both validation and measurement.
• Calibration mode: may be entered by keeping CAL CHECK pressed for three seconds (the
“CAL” tag appears), it enables calibration of the instrument.
• GLP mode may be entered by pressing GLP/
V
(“GLP” appears), it enables consulting of user
calibration date or restore factory calibration.
DISPLAY ELEMENTS DESCRIPTION
1) Instrument status indicator appears during different phases of zero or reading measurement
2) Icons displayed in this area are warning or action icons, signaling next operation
3) The battery icon shows the charging level of the battery
4) The hourglass appears when the instrument is performing an internal check up
5) CAL: appears when the instrument operates in the calibration mode
6) The month, day and date icons appear when a date is displayed
7) The chronometer appears when the reaction timer is running
8) Four digit main display
9) Measuring units
10) Four digit secondary display