Hach 8000A Manuel D'utilisation page 12

Set the display preferences
Use the DISP PREFS function to set the system display and print
parameters.
1. From the Main Functions menu, push DISPL.
The display shows the Display Functions menu.
2. Push DISP PREFS.
The display shows the Display preferences screen for the first
counter.
3. Change or update the settings. Push Enter to confirm a setting.
Option Description
Counts format Liquid standards: Counts (particles detected in each
channel) or Counts/xxx mL (Counts in a operator specified
volume of fluid). The sample volume must be entered in the
sample volume field of the CNTR SETUP function.
Aerosol Standards: Counts, Counts/CM (Cubic Metre) or
Counts/CF (Cubic Foot). Valid only in TIME mode.
Assumes a flow rate of 1.0 CFM (Cubic Feet per Minute).
Do not use this format if the flow rate is not 1.0 CFM.
Counts per Value between 0.1 and 100,000 mL for calculating
volume counts/xxx mL.
Size format The format for identification of particle size on the counter
display or printout.
Size: results are displayed in microns.
mV/range: results are shown in mV over the range of
E1/E2/S1/S2.
Display format Histogram: Values are shown graphically as vertical bars.
Tabular: Values are shown in columns with headings.
Print format Histogram or Tabular, similar to Display format.
Histogram Cumulative: Counts for each channel (bin) equal the sum
type of the counts that are greater than the channel threshold
setting and the counts in all channels above.
Differential: Counts for each channel (bin) are those
between the threshold of the current channel and the
threshold of the next higher channel.
12 English
DISP RUN, DISP AVG, DISP BACK and DISP RESLT functions
These functions are found in the Display Functions menu. Each function
is described in Table 2.
Table 2 Display Run, Average, Back and Result functions
Display function Description
DISP RUN Shows the current run information for a counter on the
system. Display parameters are set up in Display
Preferences.
DISP AVG Shows the average values for each channel in Size or
mV/range, similar to the Size Format parameter in Display
Preferences.
DISP BACK Shows the current background information for a counter on
the system. Parameters are set up in Display Preferences.
DISP RESLT Shows the latest Fed-Std-209E analysis, if available. The
limit, mean, standard deviation and UCL fields are given in
units of counts/CF, regardless of the unit chosen in the
Counts Format field in Display Preferences.
Make a counter active or inactive
1. In the Miscellaneous functions menu, push CNTR COMM.
The display shows the Counter Communications menu.
2. Push ACTIV CNTRS.
The current state of each counter is shown.
3. Use the arrow keys to change a counter to active or inactive. Push
ENTER to confirm the selection.
Inactive counters do not respond to the START key. All counters in
the system are set to the active state by default when the counter is
powered on. At least one counter must be active at all times.
Configure a global setup
Global Setup is part of the Parameter Setup functions menu. Global
setup parameters apply to all counters in the system.
1. In the Parameter Setup functions menu, push GLBL SETUP.