DYS DWA-3000B-DO - Page 7

DWA-3000B-DO ANALYZER
7
CALIBRATION
제로 교정
Zero 000.0m g/L CAL
Span 08.11m g/L CAL
2) ZERO Calibration
CAUTION
▪ Check if any cracks or abnormalities exist on Sensor by all appearances after unpacking.
If any abnormalities are found, contact the Supplier..
▪ Be sure to execute calibration prior to operation to adjust the electrical characteristics
of Sensor & Instrument.
▪ Temperature accuracy is required for the measurement of dissolved oxygen.
▪ Routine calibration is required as the sensitivity of electrode varies by long period.
▪ Periodic calibration and checking of electrode are required according to the sample, number
and kind.
▪ Execute one selected between 2 items below in case of Polarograph sensor.
① Disconnect the A-terminal in the instrument terminal, execute ZERO calibration
according to the operation procedure below and wire it.
② Execute Zero calibration by the operation procedure below after submerge the electrode
in ZERO solution (Sodium Sulfite (Na2SO3)) for 5 minutes.
▪ Execute one selected between 2 items below in case of Galvanic sensor.
① Disconnect the A-terminal in the instrument terminal, execute ZERO calibration
according to the operation procedure below and wire it.
② Execute Zero calibration by the operation procedure below after submerge the electrode
in ZERO solution (Sodium Sulfite (Na2SO3)) for 5 minutes.
.
▪ Press the key to display below screen.
ZERO Calibration
Press keys to move the cursor position and set the figures to 0.
CAL
CAL