9. Changes in the Internal Settings
* Setting changes are available only for SI-100IA (Alarm Display Unit.)
1-1
Gas Alarm Concentration Calibration
If you hold the setting switch for 5 seconds, then
Zero calibration
press a switch labeled as oFSt again, a current concentration will be displayed.
(If a current concentration value is less than 0, it will be displayed as -) If the
current concentration is not zero, press the setting button for more than 1
second. Then
Ξ
SET will be flashing while the current value is adjusted to zero.
(A value of LNG and LPG will turn into -0.9 at the time of Zero calibration and a value in the case of the LIN
will be stored at the moment you press the setting button)
Adjusting a concentration of calibration gas (default 25% LEL)
When the Zero calibration is over and the SET is completed, the display will
show SPAN. If you press the Switch while SPAN is being displayed, a
concentration of the calibration gas that has been set will be displayed. If a
concentration of the calibration gas is different, enter the same number as
that of the calibration gas by using the UP and DOWN key and hold the
switch for 1 second at a status of a changed figure. Then the calibration gas
concentration will be changed.
Gas Calibration
After adjusting the calibration gas concentration, SCAL will be displayed. If
you press the Switch at this status, a current gas value will be displayed.
(Zero will be displayed if the Zero calibration is completed). At this moment,
inject the calibration gas to the sensor at this state.
If there is small change even after the gas is injected for 30 seconds, press
the setting switch for more than one second when a displayed concentration value is different
from that of the calibration gas. Then while
ΞSET
is being blinking, the connection will be
corrected to that of the calibration gas
* If a Concentration of the Calibration Gas is consistent with a gas concentration that you
hold, all you have to do is to implement the gas calibration. For this, press the setting
switch for 5 seconds, and choose
OFST
,
SPAN
, or
SCAL
with Circuit Test Switch to modify
only parts necessary. By default, a SPAN value is set to 25%. (in case of flammable gas)
*. In case of incorrect operations due to the progress of calibration, turn the power ON / OFF
while holding a setting and return switch simultaneously. And then, for 5 seconds,
“
FACT
”
will be displayed and the device will turn into the initial state. (In this case, gas re-calibration
is necessary)
*. If you press the return switch while calibration is in-progress, your device will be switched
back to a normal mode from the calibration mode.
LEL
LEL
LEL
LEL
LEL
