RKI Instruments EC-600, Руководство по эксплуатации

Страница: 42 / 70

42
7-3. Preparation for zero and span adjustment
Perform zero and span adjustment of sensors using a calibration gas more than once every six months.
The zero and span adjustment requires dedicated equipment and a calibration gas. Please contact RKI.
<Required Equipment/Material>
Equipment Calibration cup, fixed flow regulator, sample tubing
Zero
adjustment
Fresh air or zero air if a fresh air environment cannot be
verified
For details about operation,
refer to "Zero adjustment"
(P.43).
Span
adjustment
CO (50 ppm)
For details about operation,
refer to "Span adjustment"
(P.44).
1. Screw the fixed flow regulator into the calibration cylinder.
2. Use the calibration tubing to connect the regulator to the calibration cup’s inlet.
3. Remove the charcoal filter holder from the EC-600 by twisting it counterclockwise until the tabs are
horizontal and then pulling it away from the instrument.
4. Attach the calibration cup to the EC-600.