Cosa 9610 - Page 9

INSTALLATION, OPERATION AND MAINTENANCE MANUAL – COSA 9610™
10 | Page
The analyzer itself controls the timing of the valves switching. When the measured
values stay within the specified tolerances, the newly calculated calibration.
parameters will be accepted. Otherwise, the analyzer will keep the old value and
generates a CAL ERROR on the display and switch the system fault contact and
calibration fault contact.
The automatic calibration can be started as followed:
• Programmable time schedule (Timed calibration)
• Initiated manually via on-screen menu (Semi-automatic calibration)
• External host activates the calibration request contact (Remote calibration)
The one-point calibration/validation procedure will be executed as followed:
1. Analyzer activates calibration/validation contact.
2. The procedure pauses for the specified “Calibration Start Delay” time for the
external host to prepare for calibration/validation.
3. Process gas is switched off and the calibration gas is switch on.
4. The analyzer waits for the readings to stabilize up to the “Switch Time”.
5. Calibration gas is switched off and the process gas is switched on.
6. Analyzer deactivates calibration/validation contact.
The two-point calibration/validation procedure will be executed as followed:
1. Analyzer activates calibration/validation contact.
2. The procedure pauses for the specified “Calibration Start Delay” time for the
external host to prepare for calibration/validation.
3. Process gas is switched off and the low calibration gas is switch on.
4. The analyzer waits for the readings to stabilize up to the “Switch Time”.
5. Low calibration gas is switched off and the high calibration gas is switched on.
6. The analyzer waits for the readings to stabilize up to the “Switch Time”.
7. High calibration gas is switched off and the process gas is switched on.
8. Analyzer deactivates calibration/validation contact.
The three-point calibration/validation procedure will be executed as followed:
1. Analyzer activates calibration/validation contact.
2. The procedure pauses for the specified “Calibration Start Delay” time for the
external host to prepare for calibration/validation.
3. Process gas is switched off and the low calibration gas is switch on.
4. The analyzer waits for the readings to stabilize up to the “Switch Time”.
5. Low calibration gas is switched off and the medium calibration gas is switched on.
6. The analyzer waits for the readings to stabilize up to the “Switch Time”.
7. The analyzer switched the gas stream to the high range mixing chamber.
8. The analyzer waits for the readings to stabilize up to the “Switch Time”.