GASTRON GTD-2000TxW Instruction Manual

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GASTRON GTD-2000TxW Instruction Manual Manual pdf 22 page image

GTD-2000TxWInstruction Manual 7. System Mode7.2.2. Span CalibrationCALIBRA.MODE- Contact "↑" or "↓" key to select "Calibration Mode".- Contact "FUNC" key when "CALIBRA. MODE" is displayed to enter Calibration Mode.- Contact "RESET" key to return to Measuring 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, press "FUNC" key to enter the next mode.- When Hold function in Maintenance Mode is on, the current maximum SPAN gas value is held anddisplayed 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 seta 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 isbelow 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 ADCinput range. The above FAIL messages are automatically released if the status is normal after adjustingSPAN value.SPAN SETLOW FAILSPAN SETHIGH FAILSPAN >>[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 afterperforming auto calibration.- Contact "RESET" key to return to "Calibration mode".