www.gastron.com
22
_
23
GTD-1000Tx(M)
Instruction Manual
7. System Mode
7.2.2. Span Calibration
CALIBRA.
MODE
- Contact "↑" or "↓" key to select "Calibration Mode".
- Contact "FUNC" key when "CALIBRA. MODE" is displayed to enter Calibration Mode.
CALIBRA.
[SPAN]
- Contact "↑" or "↓" key to achieve [SPAN] then contact "FUNC" key to enter Span Calibration mode.
SPAN CAL
[ NO]
- Contact "↑" or "↓" key to achieve [YES] then contact "FUNC" key to perform Span Calibration.
SPAN GAS
[ 50]
- Using a calibration tool, inject the standard gas to the sensor at a flow rate of 500 mL/min for 90 sec.
-
After the measurement is stabilized, contact "FUNC" key to enter the next mode.
- When Hold function in Maintenance Mode is on, the current maximum SPAN gas value is held and
-
displayed in the first row.
- The current measurement is displayed in the second row.
[ 50]
[ 50]
SPAN SET
[ 50]
- It is a mode to set standard gas value. When there is no "Fail" message, contact "↑" or "↓" key to
-
set a value.
- When the inject standard gas value is abnormal, it displays Fail message. Fail message is as follows.
-
Fail message and span set value are displayed alternatively.
-
① "LOW FAIL" occurs when the difference between injected gas value and zero calibration value is
below 1%.
-
② " HIGH FAIL" occurs when injected gas value is above 95% of total ADC input range.
- "RING FAIL" occurs when injected gas value runs in the current set span value, it exceeds 95% of ADC
-
input range. The above FAIL messages are automatically released if the status is normal after adjusting
-
SPAN value.
SPAN SET
LOW FAIL
SPAN SET
HIGH FAIL
SPAN >>
[SUCESS]
- After completing standard gas value setting, contacting "FUNC" key automatically runs Span
-
Calibration. When it suceeds, "SPAN SUCCESS" is displayed on LCD display for 2 sec then it changes
-
to "CAL DATA" Mode.
- When span calibration is not successful, "SPAN FAIL" is displayed for 2 sec and it changes to
-
"Cal. Data Mode".
SPAN >>
[ FAIL ]
CAL.DATA
[ 0]
- It is a mode to display measurement after calibration and checks whether calibration is successful after
-
performing auto calibration.
- Contact "RESET" key to return to "Calibration mode".
7. System Mode
7.3. ALARM MODE
PASSWORD
[**]
- Contacting “FUNC” key for 2 sec or longer in Measuring Mode enters Password mode.
- After setting Password using "↑" or "↓" key, contact "FUNC" key.
ALARM
MODE
- Contact "↑" or "↓" key to select "Alarm Mode".
- Contact "FUNC" key when "ALARM MODE" is displayed to enter Alarm setting mode.
- Contact "RESET" key to return to Measuring Mode.
ALM USED
[ ON]
- It is a setting where Alarm Mode Setting is turned on or off.
- Contact "↑" or "↓" key to change ON/OFF status. When it is ON, Alarm function and Alarm Mode
-
setting can be performed.
- GTL-100 explosion-proof warning light can only be used when it is ON.
- Contacting "FUNC" key enters the next mode.
AL LATCH
[ ON]
- It is a mode that sets Reset method after running of Alarm1. Contact "↑" or "↓" key to change "ON" and
-
"OFF".
- "OFF" sets to automatically reset the alarm. "ON" set to reset the alarm only when Reset key is pressed.
- Contact "FUNC" key when a desired mode is displayed to set then enter the next alarm setting mode.
A1 LEVEL
[ 20]
- It is a mode that sets Alarm1 level. Contact "↑" or "↓" key to increase or decrease Alarm1 level,
-
respectively.
- When a desired alarm 1 threshold is displayed, contact "FUNC" key to set it and enter the next item.
A1 TYPE
[INC]
- It is a mode that sets operational direction of Alarm1. Contact "↑" or "↓" key to display "INC" or "DEC".
- "INC" mode operates when the value is equal or larger than set alarm threshold. "DEC" mode operates
-
when the value is equal or less than set alarm threshold.
- Contact "FUNC" key when a desired mode is displayed to set then enter the next mode.
A1 TYPE
[DEC]
A1 DBAND
[ 0]%F
- It is a mode that sets Dead band value for Alarm1 operation. Use "↑" or "↓" key to set a value.
- It is a function where Alarm1 operates at values above the sum of Alarm1 level and dead band values
-
and releases at values below Dead band value subtracted from Alarm1 level.
- When a desired alarm 1 dead band is displayed, press "FUNC" KEY to set it and enter the next item.
A1 TIME
0 SEC
- It is a function to prevent instantaneous malfunction of detector due to external shock and noise other
-
than from normal operation and time can be set in a range between 0~60 sec.
- For Alarm1 dwell time setting, press "↑" or "↓" key to increase or decrease in unit of 1 sec, respectively.
- When a desired Alarm 1 dwell time is displayed, press "FUNC" KEY to set it and enter the next item.
- Ex.) Alarm threshold value: 20% LEL / Delay time: When it is at 5 sec, Alarm triggers when the
-
measured value is above the set value based on 20%LEL for 5 sec or longer. When it goes down below
-
the set value within 5 sec, alarm is not triggered.
A2 LEVEL
[ 20]
- It is a mode that sets Alarm2 level. Contact "↑" or "↓" key to increase or decrease Alarm2 level, respectively.
- When a desired alarm 2 threshold is displayed, press "FUNC" KEY to set it and enter the next item.
