Riken Keiki PT0E-09810, Operating Manual, Page: 31 / 57

31
4-7. Air calibration mode
Press the AIR switch.
Keep pressing the AIR switch.
Changes the display to [Adj
HOLD AIR].
When [RELEASE] is
displayed, release the AIR
switch.
A 30-second countdown is
started on the LCD.
(TYPES-A and E only)
When the zero adjustment is
successfully completed, [END]
is displayed, and you return to
the detection mode.
WARNING
When air calibration is performed in the atmosphere, check the atmosphere for freshness before
beginning the calibration. If other gases exist, the adjustment cannot be performed properly, thus
leading to dangers when the gas leaks.
CAUTION

Perform air calibration under pressure and temperature/humidity conditions close to those in the
operating environment and in fresh air.

Perform air calibration after the reading is stabilized.

If there is a sudden temperature change of 15

C or more between the storage and operation
locations, turn on the power of the gas monitor, let it leave for about 10 minutes in a similar
environment to the operation location, and perform air calibration in fresh air before using it.