Hach-Lange ORBISPHERE 510_51x Basic User Manual - Manual (Page 18)

Option Description
Enable negative
concentration Check as appropriate.
Continuous purge during
thermal cut off If thermal cutoff has been enabled (see Measurement configuration
on page 16), then check this box to ensure that a continuous purge of the TC
sensor takes place while the measurement session is suspended due to the
thermal cutoff temperature value being exceeded.
Note: To manually set the TC sensor into a continuous purge mode, press the
Continuous Purge button that is available from the Services - Diagnostic -
Channel x - Amplifiers menu.
Offset and slope
corrections Enable correction as appropriate. If enabled, the correction values for offset and
slope must be entered. These values cannot be negative.
Liquid to gas factor Enable correction as appropriate. If checked, the percentage correction factor
must be entered. This value cannot be negative.
Note: If you believe you need to enable these corrections, it is advisable to
contact a Hach Lange Service Representative first.
Interferences configuration
These options are available to take into account the influence of some components or gases in the
sample during measurement. All available interference corrections are disabled by default.
The following interference corrections are available:
• For oxygen measurements - CO
2
, H
2
S, Chlorine, Salt, H
2
• For hydrogen measurements - Temperature, H
2
O, He, O
2
• For nitrogen measurements - Temperature, H
2
O, O
2
, H
2
Note: If you believe you need to enable any of the above, it is advisable to contact a Hach Lange Service
Representative first.
Measured data storage
There is one measurement file per channel which contains the data generated by the measurement
cycle.
1. Storage modes in continuous measurement mode:
Option Description
No storage Storage is disabled.
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).
2. Storage modes in sample measurement mode:
Option Description
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.
Calibration
Calibrations can only be performed once the instrument has been installed and configured.
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