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GTC-200F
Instruction Manual
- The message for setting function of Alarm1 blink output as a function for setting the function of ON/
OFF of Alarm1 contact output at an interval of 1 sec while buzzer is operating is displayed as "A1bL".
- When "Func" key is pushed, the setting function for Alarm1 blink output is entered into.
- When "RESET" key is pushed, the concentration display mode is returned to.
- Mode for change of Alarm1 blink output, "on" and "oFF" modes are changed whenever "▲" key or
"▼" key is pushed.
- If "FUNC" key is pushed when the desired Alarm1 blink outmode is displayed, the Alarm1 blink output
mode is set and the next item is entered into.
- When "RESET" key is pushed, the concentration display mode is returned to.
- Alarm1 blink output mode has 2 types of " on" and " oFF" , where Alarm1 blink output does not operate
in oFF mode while Alarm1 blink output is operated in on mode.(However, it operates when the Alarm1
contact output mode is on.
- Both the 2nd alarm (Alarm2) and the 3rd alarm (Alarm3) have the same menu structure.
- The message informing completion of the setting function is displayed as "End" for 2 sec, and
the display state of gas concentration is returned to.
- Mode for setting of Dead band value with operation of Alarm1, and the value is increased or decreased
whenever "▲" key or ▼" key is pushed.
- Function where Alarm1operates above Alarm value plus Dead band value when the Alarm1 is in "1H "
mode while Alarm1 is cleared below Alarm value minus Dead band value.
- Function where Alarm1 operates below Alarm value minus Dead band value when Alarm1 is in "1L "
mode while Alarm 1 is cleared above Alarm 1 1 value plus Dead band value.
- If "FUNC" key is pushed when the desired Alarm1 Dead band value is displayed, the value is set and
the next item is entered into.
- When "Reset" key is pushed, the concentration display mode is returned to.
- In this function, Alarm continues On/Off when the concentration value reaches near the Alarm setting
value. It is the function of giving hysteresis value to remove such phenomenon, and the value is set
for 0 upon factory shipment.
Ex) When the alarm setting value is 20%LEL / Dead band: 2%LEL, the alarm occurs at 22% LEL
based on 20%LEL, and is cleared at18%LEL.
- The message for setting function of Alarm1 delay time as a function for setting of Alarm1 delay time is
displayed as "AL1t".
- When "Func" key is pushed, the setting function for Alarm1 delay time is entered into.
- When "RESET" key is pushed, the concentration display mode is returned to.
- Function to prevent occurrence of instantaneous malfunction of detector due to effects of external
impact and noise rather than normal operation, and Alarm1 delay time is increased or decreased by
the unit of sec whenever "▲" key or "▼" key is pushed.
- If "FUNC" key is pushed when the desired Alarm1 delay time is displayed, the Alarm1 delay time is
set and the next item is entered into.
Ex) When alarm setting value: 20% LEL / Delay time: 5 Sec, alarm occurs based on 20%LEL when
the measured value above the alarm setting value for more than 5sec, while alarm does not occur
when it falls below the alarm setting value within 5 Sec.
- The message for setting function of Alarm1 contact output as a function for setting of Alarm1 contact
output is displayed as "A1rl".
- When "RESET" key is pushed, the concentration display mode is returned to.
- Mode for change of Alarm1 contact output, and "on" and "oFF" modes are changed whenever "▲" key
or "▼" key is pushed.
- If "FUNC" key is pushed when the desired Alarm1 contact output mode is displayed, the Alarm1
contact output mode is set and the next item is entered into.
- When "RESET" key is pushed, the concentration display mode is returned to.
- Alarm1 contact output mode has 2 modes of "on" and "oFF" , where Alarm1contact output does not
operate in oFF mode while Alarm1 contact output operates in on mode.
▼ ▲
- If "TEST" and "RESET" keys are simultaneously pushed when "SELF" is blinking after power supply ON,
the setting function for Maintenance is entered into.
- When "Reset" key is surely pushed in Maintenance mode, the display state for gas concentration is
returned to.
- Mode for selection of functions setting current input value and output value as the reference for Alarm
Channel unit , and "-In-" or "-oUt" is displayed whenever "▲" key or "▼" key is pushed.
- If "FUNC" key is pushed when the desired mode is displayed, the relevant mode is entered into.
- When "-In-" is selected, it is the mode for setting of current input values, while it is the mode for
setting of current output values when "-oUt" is selected.
- When "Reset" key is pushed, the concentration display mode is returned to.
- Mode for setting by inputting the current of 20mA in the case of having selected "-In-", and the
message is displayed as "IA20".
- When "Func" key is pushed, the function with the current input value being displayed as figures is
entered into.
- When "Reset" key is pushed, the concentration display mode is returned to.
9.7. Maintenance Mode
■ Both the 2nd alarm and the 3rd alarm have the same menu structure.
9. How to operate Channel Unit
9. How to operate Channel Unit
