Hach EM950 Manual Básico Del Usuario página 16

5.3 Navigation and Main Menu
Push OK to confirm a selected menu option or a value shown in the display. Select More and push
OK to see additional screens and options if available. Push the Main Menu button to go to the Main
Menu from a submenu.
Note: Some operations cannot be completed unless a sensor is connected to the meter. If these operations are
tried when there is no sensor connected, the display shows an error message. Connect a sensor and try the
operation again.
1. Real time—Select this option to get real-time velocity and depth information. (A sensor with
depth capability is necessary to read depth). An example of a Real Time screen for sensors with
velocity only is shown in
shown in Figure 9. The format of the information and options shown depends on the type of
sensor used. In Real Time mode, the Quick Jump key toggles between digital and graphic views
of Real Time information. The velocity is updated in FPA filter mode according to fixed period
averaging time. In RC filter mode, the velocity is updated continuously on the screen every
250 ms.
Option Description
Capture Stores the depth and velocity information shown in memory. The information is
saved until power is cycled, the memory is saved to a non-volatile real-time file,
or the user exits from real-time mode.
Save Saves captured measurements in the volatile memory to a non-volatile real-time
file. A message will show if the number of files is greater than the maximum
possible. Files are stored in tab delimited (.tsv) format.
Done or OK Exits the real-time mode and returns to the Main Menu. If there is unsaved data in
volatile memory, a confirmation message asks the user to confirm the exit without
saving the data.
Clear Clears captured measurements from the volatile memory buffer. The user can
choose from Clear Last, Clear All or Cancel options.
Setup Allows the user to modify the main filter parameters and enable and program the
Maximum Depth sensor positioning feature. The Maximum depth feature allows a
user to enter system parameters for depth measurement in Real Time mode. The
user can choose to enter a maximum depth value taken directly with a ruler
measurement (manual), or taken indirectly with the depth measurement
(automatic). Both methods enable the Maximum Depth sensor positioning
feature.
In automatic mode setup, the user directly enters the distance from the bottom of
the channel to the bottom of the sensor mount (offset). The setup interface will
continuously show the current depth value returned by the sensor plus the offset.
The meter stores this value as the Maximum Depth when the OK button is
pushed. In all other cases, the depth values shown do not include the offset.
The Maximum depth feature requires a sensor with velocity plus depth.
Files or Shows a summary of each real-time file stored in non-volatile memory. Files can
View be individually viewed and deleted.
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Figure 8. Real time screens for sensors with both velocity and depth is