GASTRON GTC-200A Instruction Manual page 22

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plus Dead band value) and is deactivated below the value ( Alarm value
minus Dead band value).
-. When Alarm2 is in "2L", alarm2 is activated below the value (Alarm value
minus Dead band value) and is deactivated above the value ( Alarm value
plus Dead band value)
-. If desired alarm2 dead band value is displayed, press "FUNC" to set the
value and go to next item.
-.If pressing "RESET" key, returns to density display mode
-. This function is to give hysteresis value to remove frequent alarm on/off
around alarm setting value (this value is zero when shipment).
Ex) If alarm setting value is 20%LEL and Dead Band is 2%LEL, alarm is
activated at 22%LEL and deactivated at 18%LEL.
-. Alarm2 delay time setting function ("AL2t") is displayed.
-. Press "Func" key to go into alarm2 delay time setting mode
-.If pressing "RESET" key, returns to density display mode
-. This function is to prevent malfunction by external shock or noise and
change of alarm2 delay time is increased or decreased by pressing "▲" or
"▼" key
-. If desired alarm2 delay time is displayed, press "FUNC" key to set alarm2
delay time and go to next item
-.If pressing "RESET" key, returns to density display mode
Ex) alarm setting value is 20% LEL and delay time is 5 seconds, alarm is
only activated when gas density is above than alarm setting value for
over 5 seconds and no alarm is activated when gas density fall under
alarm setting value within 5 seconds
-. Alarm2 relay output setting function ("A2Ct") is displayed.
-. Press "Func" key to go into Alarm2 relay output setting mode.
-. If pressing "RESET" key, returns to density display mode
-. This mode is to change Alarm2 relay output and output type is changed in
turns ("on" and "oFF") when pressing "▲" or "▼" key.
-. If desired Alarm2 relay output type is displayed, press "FUNC" to set the
type and go to next item.
-.If pressing "RESET" key, returns to density display mode
-. There are two kinds of Alarm2 relay output modes ("on" and " oFF")
oFF mode is to deactivate relay output and oN mode is to activate
output..
-. Alarm2 Blink ("A2bL") is displayed
This function is to set that alarm1 relay output is continuously on/off (1 sec
interval) during operation of buzzer
-. Press "Func" key to go into Alarm2 Blink output setting mode.
-.If pressing "RESET" key, returns to density display mode
-. This mode is to change Alarm2 Blink output type and "on" and "off" is
changed in turns when pressing "▲" or "▼" key.
-. If desired Alarm2 Blink output type is displayed, press "FUNC" key to set
the type and go to next item.
-.If pressing "RESET" key, returns to density display mode
-. Alarm2 Blink output types are " on" and " oFF".
oFF type is to deactivate Alarm2 Blink output and oN type is to activate
Alarm2 Blink output.(this output is activated only when Alarm2 relay output
type is "on")
-. Alarm3 value setting function ("AL-3") is displayed.
-. Press "Func" key and go into Alarm3 settingmode.
-.If pressing "RESET" key, returns to density display mode
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GTC-200A