Hanna Instruments HI 95747C User Manual
Page 8
8
KEYPAD DESCRIPTION
• ON/OFF: to turn the meter on and off.
• ZERO: to zero the meter prior to measurement.
• READ/TIMER: this is a bi-functional key, just press for making a measurement, or hold the
key for 3 seconds to start a pre-programmed countdown prior to measurement.
• CAL CHECK
TM
: this bi-functional key allows to perform validation of the instrument just
pressing the CAL CHECK
TM
key, or hold the key for 3 seconds to enter the
calibration mode
.
OPERATING MODES
•
Measurement mode:
default operation mode, enables both validation and measurement.
•
Calibration mode:
may be entered
by keeping CAL CHECK
TM
pressed
for three seconds (
the
“CAL” icon appears), it enables calibration of the instrument.
DISPLAY ELEMENTS DESCRIPTION
1) four digit main display area.
2) CAL: appears when the instrument operates in the
calibration mode.
3) the Month and Day icons appear above the number of month and day when a date is
displayed.
4) the blinking “Battery” icon appears when the battery voltage is getting low.