System Mode; Program Mode; Calibration Mode; Zero Calibration - GASTRON GTD-1000T Series Instruction Manual

GTD-1000Tx(M)
Instruction Manual

7.1. PROGRAM 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.
- If password is correct, it enters Program mode.
PROGRAM
- By contacting "↑" or "↓" key, mode changes in defined order.
MODE
- ( PROGRAM -> CALIABRA. -> ALARM -> SENSOR -> MAINTEN. ->DEVICE -> VERSION -> TEST )
- Mode that sets gas name type and contacting "↑" or "↓" key changes gas type.
- (DEFIN. / USER)
GAS TYPE
- DEFIN. Is acronym for Define and is selected when using built-in setting of gas name.
[ DEFIN. ]
- USER is selected when the user directly sets a gas name.
- When a desired gas type is displayed, contact "FUNC" key to set the gas name and enter Program Mode.
GAS SEL - Mode that sets gas name and contacting "↑" or "↓" key changes gas name.
- When gas type is set to DEFIN., built-in gas names can be selected for use. When it is set to USER,
[ COMB. ]
- the user shall set gas name using 5 character for use. Characters allowed for use are number, capital
USER GAS
- Alphabet, space, and period. When position is moved by setting characters, a cursor in black box shape
[■ ]
- appears as shown in the figure on left.
- Mode that sets gas measuring unit and contacting "↑" or "↓" key changes gas measuring unit.
UNIT SEL - ( % / %LEL / PPM / PPB ).
[ %LEL ] - When a desired gas measuring unit is displayed, contact "FUNC" key to set the unit and enter Program
- Mode.
- Mode that changes decimal place and contacting "↑" or "↓" key changes decimal place.
D-POINT - (0.100/1.00/10.0/100)
[ 100]
- When a desired decimal place is displayed, contact "FUNC" key to set the decimal place and enter the
- next Program Mode.
- Mode that sets high scale value that should be displayed for full range. Contacting "↑" or "↓" key
- increases or decreases the scale value.
HIGH SCL
- ( 1 ~ 10000 )
[ 100]
- When a desired high scale is displayed, contact "FUNC" key to set the high scale value and enter the
next Program Mode.
PASSWORD
- It is password setting mode. This password is checked when entering Program Mode.
[00] - Set using "↑" or "↓" key then contact "FUNC" key to set the password and enter the next Program Mode.

7. System Mode

7.2. Calibration Mode

■ Due to characteristics of the gas detector, minimum 30 min of stabilization time is required and maintenance
condition may change depending on site condition..

7.2.1. Zero Calibration

PASSWORD
- Contacting "FUNC" key for 2 sec or longer in Measuring Mode enters Password mode.
[**] - After setting Password using "↑" or "↓" key, contact "FUNC" key.
- Contact "↑" or "↓" key to select "Calibration Mode".
CALIBRA.
- Contact "FUNC" key when "CALIBRA. MODE" is displayed to enter Calibration Mode.
MODE
- Contact "RESET" key to return to Measuring Mode.
CALIBRA. - When "CALIBRATION MODE" is displayed, contacting "FUNC" key selects Zero Calibration.
[ZERO]
- Contact "↑" or "↓" key to achieve [ZERO] then contact "FUNC" key to enter Zero Calibration.
ZERO CAL
- Contact "↑" or "↓" key to achieve [YES] then contact "FUNC" key to perform Zero Calibration.
[ NO]
ZERO GAS - Using a calibration tool, inject clean air or 100% nitrogen into the sensor at a flow rate of 500 mL/min
[ 0] - for 1 min. Contact "FUNC" key when measurement is stabilized to automatically perform Zero Calibration.
ZERO >> - When zero calibration is successful, "ZERO SUCCESS" is displayed for 2 sec on LCD display then it
- changes to "CALIBRATION DATA" Mode.
[SUCESS]
- When zero calibration is not successful, "ZERO FAIL" is displayed for 2 sec and it changes to
ZERO >>
- "CALIBRATION DATA" Mode.
[ FAIL ]
- ZERO FAIL occurs when sensor input value exceeds 70% of total ADC input range.
- It is a mode to display measurement after calibration and checks whether calibration is successful after
CAL.DATA - performing auto calibration.
[ 0] - When it failed, it displays "FAIL" and the current measurement in 1 sec interval.
- Contact "RESET" key to return to "Calibration mode".
7. System Mode www.gastron.com
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