GASTRON GTC-542 Instruction Manual Download

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6.2. Power Display

- After GTC-542 power turns ON, the current firm ware version is displayed.
- It displays 24.0 before completion of self test and outputs inputted voltage after the completion.

- When "BATTERY TEST" key is pressed with external power applied, it outputs spare battery

voltage.

- When it operates on spare battery, main power LED turns off and power LED lights on.
- When the spare battery is connected properly and there is no problem in charging and usage,

BAT.GOOD LED lights on.

- When the spare battery is detached, battery key (internal switch) is off, or it is completely

discharged, BAT. GOOD LED turns off and BAT.TROUBLE LED lights on.

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GTC-542

Instruction Manual

■ Pressing "TEST" S/W for 2 sec or longer in gas concentration dsiplay mode enters Test mode.

■ In test mode, when it passes 30 min after the last S/W contro l,it automatically returns to the gas concentration

display mode

6.4. Test Mode

- When it enters Test mode, gas concentration number displays and flickers.
- This function enables testing at channel unit without injecting gas to the detector sensor. It can

set an arbitrary concentration when the user presses "Test" S/W and alarm function operates

normally with a user-defined concentration.

- When "FUNC" S/W is pressed 2 sec or longer, it enters FND / LED / Bar LED Test function.

- 3-Color bar graph LED displays green, orange, and red at 0.5 s interval and each function

LED flickers at 0.5 s interval.

- When "RESET" S/W is pressed, it returns to gas concentration display mode.

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Full Range

- After GTC-542 power turns ON, the current firm ware version is displayed.
- VER is displayed for 0.5 sec on FND then number displays.
- The current version is 1.03.

- After warming-up by "SELF" flashing for approx. 30 sec on FND of concentration display,

it immediately enters the measurement mode.

- Upon an event of fault of the equipment or detector at this time, fault alarm appears.

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X.XX

- Displays gas concentration received by the detector on FND digital display in numbers.
- Gas concentration is also displayed by 3-color bar graphic LED. Concentrations below the

primary alarm concentration in green, below the secondary alarm concentration in orange,

and above the secondary alarm concentration in red.

- 3-level alarm thresholds are always displayed by 3-color bar graphic LED. Alarm1 threshold

in green, Alarm2 threshold in orange, and alarm3 threshold in red.

- When the detector is not connected or input current from the detector is under 10% below the

set high scale value, "Undr" displays and flashes at 1 sec interval

- Trouble LED lights on, warning light flashes, and buzzer sounds
- When buzzer stop key is pressed, the warning light turns on and the buzzer stops.

- When the input current from the detector is over 10% above the set high scale value, "ovE"

displays and flashes at 1 sec interval.

- Alarm 1, 2, 3 LED lights flickers, warning light flickers, and buzzer sounds.
- Top circular LED of the 3-Color bar graphic LED lights on red.
- When gas concentration is detected to be above the set value for alarm, alarm function counts

the dwell time and if it is above the set dwell time, alarm function operates.

- Alarm relay turns on when it is above the alarm dwell time.

- When alarm latch type is "ON", upon operation of alarm function, alarm status and gas

concentration value are maintained at the max. value. It does not get release when the gas

concentration is decreased below the alarm threshold and "RESET" key must be used to release it.

- When Alarm Latch Type is OFF, Alarm is released automatically in accordance to gas

concentration.

6. Operation Method

■ Check wirings for operation power, detection parts, alarm parts, and concentration display.

■ Check the power input then turn ON the power S/W.

■ Check whether power LED at alarm and concentration display parts light on.

■ Check whether "SELF" is displayed on FND concentration display part.