20
6 Calibration
6-1 Calibrating the Pressure Sensor
The pressure sensor display value can be calibrated as follows.
(1) With a main screen displayed, press the [MODE/ESC] key to display the pressure,
temperature, or flowrate. Then hold the [CAL] key down for two seconds to
illuminate the [CAL] indicator on the mode bar.
(2) Press the [SPAN] key to illuminate the [SPN] indicator on the mode bar.
(3) Use the [UP] or [DOWN] key to set the value back to
and then press the
[ENTER] key.
(4) Press the [ZERO] key to illuminate the [ZR] indicator on the mode bar.
(5) Use the [UP] or [DOWN] key to set the value back to
and then press the
[ENTER] key.
(6) Determine the SPAN and ZERO values based on the reference pressure value
and the value displayed on the LCD screen.
(
→
Calculated based on the value on the reference
device and the value displayed when [CAL] is
indicated on the mode bar. For information about
how values are calculated, see page 22.)
(7) Press the [SPAN] key and then press the [UP] or
[DOWN] key to enter the SPAN value. Then press the
[ENTER] key.
(8) Press the [ZERO] key and then press the [UP] or [DOWN] key to enter the ZERO
value. Then press the [ENTER] key.
(9) Press the [CAL] key to return to the main screen.
LCD Screen
Status
Flashing
ON
(steady)
(Enter value)
(Confirm)
([SPAN] key)
SPAN value input screen
(2 sec)
(Enter value)
(Confirm)
([ZERO] key)
ZERO value input screen
