Hanna Instruments lp_2000 手册
10
Calibration is recommended at least once a month. You can verify the
instrument calibration by comparing the display reading against the
supplied standard solution at 10 FTU. To check the date of the last
calibration, simply hold the DATE/ key down for a few seconds.
instrument calibration by comparing the display reading against the
supplied standard solution at 10 FTU. To check the date of the last
calibration, simply hold the DATE/ key down for a few seconds.
CALIBRATION PROCEDURE
• Turn the meter on and wait for the display
to show "----".
• Press the CAL key once. "CAL" will blink on the display for approx.
6 seconds, allowing for confirmation.
• While "CAL" is still blinking, press CAL again (otherwise, it exits
this mode). "CL" will appear on the lower part of the display.
• The date of calibration may now be edited
by simply pressing the DATE/ key. The
default parameter, which is the month
segment found on the left, will blink. To
scroll to the correct number, press the
READ/▲ key. To toggle between month
and the day display segments, press the
DATE/ key. The day segment can also
be edited with the READ/▲ key.
default parameter, which is the month
segment found on the left, will blink. To
scroll to the correct number, press the
READ/▲ key. To toggle between month
and the day display segments, press the
DATE/ key. The day segment can also
be edited with the READ/▲ key.
• To confirm the displayed values and to proceed, press CAL once
more. An intermittent "ZERO" will appear on the LCD.
CALIBRATION