Hanna Instruments HI 95715 - 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: this bi-functional key allows to perform validation of the instrument just pressing
the CAL CHECK 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 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.