Endress+Hauser OXY5500 - Page 32

Operating Instructions OXY5500 Gas Analyzer
32 Endress+Hauser
5.10.6 Setting the interval
1. Select Single Scan to initiate one single measurement scan.
2. Select Interval to set a certain time interval for the measurement to be taken.
3. Insert the hours, minutes, and seconds for the interval at which measurements scans are taken.
 The recommended default interval value is “30 s” (30 seconds). The fastest possible interval for OP-3 is “1 s”.
For OP-6 and OP-9, it is “3 s”.
 Interval values set to less than 30 seconds can reduce the lifespan of the probe. Please refer to Signal drift due to
photo decomposition →  for more information.
The Interval sampling rate determines the frequency for the sensor calibration. For example, a sensor with an
Interval sampling rate of 30 seconds would produce 100,000 measurement points at 34.7 days. Endress+Hauser
recommends 35 days as a starting point for re-calibration or as the application requires it. Refer to Table 9 below and
Calibrating the analyzer → .
Sampling Rate Points Calibration Frequency (Days)
30 seconds 100,000 34.7
1 minute 100,000 69.4
1 hour 100,000 4,166
10 hours 100,000 41,666
Table 9. Interval sampling rate/calibration frequency
5.10.7 Logging and data management
On the MEASUREMENT SETTINGS screen, use the Navigation buttons to move to the Logging box. Refer to Figure
35.
Figure 35. Measurement settings screen - Logging
 In the Status bar, the symbol indicates Logging is turned off.
• Select Off if you do not want to store measurement data.
• Select On to store measurement data.
The screen will switch to the Measurement Browser automatically. A list will display showing the Measurement file
name, the number of measurement Points stored in the respective file and the date the file was Last Used. Refer to
Figure 36.