Measurement menu – Hach-Lange ORBISPHERE Model 51x User Manual User Manual
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Measurement Menu
Measured data storage
There is one measurement file per channel which contains the data generated by the measurement
cycle. The measurement files are updated in volatile memory, and regularly copied in non-volatile
memory (file back-up). At start up, the measurement files in volatile memory are updated with the files
from the non-volatile memory.
Note:
When the measurement file is full, it is managed as a First in-First out buffer.
This dialog box allows adjustment of the parameters for recording and storing measurements. Two
storage mode selections are available depending on the measurement mode selected (see
).
Storage modes in continuous measurement mode:
•
No storage
•
Store once
: When the volatile memory is full (10,000 positions), the recording of measurement stops
•
Rolling buffer
: When the volatile memory is full, the latest measurement set replaces the oldest one
continuously (first-in, first-out)
Storage modes in sample measurement mode:
•
Only final measurement
: The measurement when the stop criteria are met is saved (one per
sample)
•
Only when sample mode started
: The measurements when the sample mode is started are saved.
•
All measurements
: All the measurements are stored continuously.
Note:
Data stored in volatile memory are lost when instrument is off, non-volatile memory is permanent.
In case of an accidental power off event, the instrument resumes measurement storage after the last
measurement stored in flash.
•
RAM time (volatile memory)
: Delay in seconds between two recordings of measured data.
•
FLASH time (non-volatile memory)
: Delay in seconds between two data file transfers from volatile
memory into non-volatile memory. The last data file erases the previous one. This field is only
available if the Auto save in flash box is checked.
•
Save in flash now
: Press this button to store measurement data in flash (non-volatile memory)
immediately. After pressing this button, press OK to initiate the process. A warning screen appears
informing you that the operation can take up to 30 seconds. Press Yes to continue with the process,
or No to abort.
•
Auto save in flash
: Check this box to save measurements in flash (non-volatile memory)
automatically. Measurements are saved at regular time intervals as defined in the FLASH time box.
•
Start logging measurement
: Store once mode. Starts and stops the measurement recording
session. Measurement recording is stopped when the buffer is full.
•
Purge data
: Clear all data for all channels in the volatile and non-volatile memories.
•
Open data 1, 2, or 3
: Opens a table showing the measured values which are stored in the volatile
memory (RAM). Use the scroll bar at the right to move to another data range (the id range will be
shown in the title bar). The page number being viewed and the total number of pages are shown at
the bottom.
Use the keys at the bottom to move directly to the first page, previous page, next page or last page.
Note:
If TPO or TPA calculation is enabled, a ”TPO data” or a ”TPA data” button will be available
underneath the “Open data” button described above. Pressing this button will display the TPO or TPA
calculated data in a screen similar to that for standard data.