Hach 51 Series User Manual page 15

the oxygen level for LDO sensor). This display can be configured to suit individual conditions and
convenience.
The K-M1100 low range sensors measure dissolved oxygen up to a maximum value of 5000 ppb.
Below 2000 ppb the measurement cycle interval is 4 seconds for 2 channels and 6 seconds for
3 channels. Between 2000 and 3000 ppb the measurement cycle interval is 30 seconds. Above
3000 ppb the measurement cycle interval is 60 seconds. The K-M1100 high range sensors
measure dissolved oxygen up to a maximum value of 40 ppm, the measurement cycle interval is
4 seconds for 2 channels and 6 seconds for 3 channels. Should the measured concentration go
above the maximum value for the sensor then the measurement cycle is increased to 60 seconds
and an Out of range message will be displayed. An arrow symbol to the right indicates if the value is
increasing, decreasing, or remaining constant. Once the measured value falls below the maximum
value, the measurement cycle returns to the pre-defined interval.
Numeric view configuration
1. Select Configure from the View menu followed by Conf. numeric view to customize the display:
Option
Display temperature
Display channel 1, 2, 3
Display mini graph
Display time base
Upper bound
Lower bound
Time base
Grid button
Auto scale update button Automatically set the graph upper and lower bounds to best fit the actual values
Clean button
Statistic view
This feature offers statistical data to match with Total Quality Management tools to better analyze
how a process behaves. The statistics are calculated from the data in the measurement file and
values updated each time a new measurement is added.
Diagnostic view
The diagnostic view contains important information but is only really useful for troubleshooting
purposes.
Measurement menu
Instrument configuration
1. Select Config. instrument from the Measurement menu:
Option
Measurement mode Continuous mode for on line process. Default: Continuous mode.
Description
Select Channel x to display the sample temperature for that channel.
Select yes or no
Check the box to display the graph.
Check the box to display the time base.
Adjust graph upper limit.
Adjust graph lower limit.
Adjust graph time span.
Set up the graph to display the x or y axes, grid, or alarm thresholds.
displayed.
Clear the graph being displayed and restart.
Description
Sample mode for lab sample analysis of small individual samples, such as cans or
bottles.
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