9.3 Automatic Datalogging
The 90-FL can automatically log records into the Logger. There are three automatic datalogging
modes to choose from…
1. Rate Per Day
• Logs from 1 to 288 readings per day, evenly spaced throughout each 24 hour period.
• Unit is dormant between readings and “wakes up” when a reading is due.
• Dissolved Oxygen stirrer is switched on for 40 seconds before each reading is logged (if
Dissolved Oxygen stirrer output is enabled).
• Unit continues to log until automatic datalogging is disabled, or until the memory is full.
2. Time of Day
• Logs at up to12 discrete times of the day, which can be unevenly spaced throughout each 24
hour period.
• Unit is dormant between readings and “wakes up” when a reading is due.
• Dissolved Oxygen stirrer is switched on for 40 seconds before each reading is logged (if
Dissolved Oxygen stirrer output is enabled).
• Unit continues to log until automatic datalogging is disabled, or until the memory is full.
3. Sampling Period and Duration
• Logs a reading every 1 to 300 seconds for a duration of 1 to 720 minutes.
• Duration can be set to log continuously until the memory is full.
• Unit is turned on continuously in this logging mode.
• Dissolved Oxygen stirrer is switched on continuously in this logging mode (if Dissolved
Oxygen stirrer output is enabled).
The automatic datalogging parameters of the 90-FL must first be programmed, then logging can be
started and stopped as required.
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