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Table 5 Configuration options—US900X ultrasonic sensor (continued)
Option
Description
Number of Holds
Selects the number of times the last recorded data point is saved to the log if a
failed reading occurs due to echo loss. Options: 0 to 15 (default: 4).
For example, if the number of holds is 5, the last data point replaces the next
five consecutive failed readings or until a successful reading occurs.
Median Filter
Selects the number of data points used in the median filter. The sampler takes
median of 3, 5, 7, 9 or 11 data points to decrease noise or outliers (default:
None). Only the median values are logged. Raw data values are not logged.
Advanced Settings
Sample Rate
Selects the number of measurements done per second. Options: 1 to
10 (default: 4 seconds).
Min Dist
Selects the minimum distance from the sensor to the water. Options: 0.13 to
3.96 m (5.25 to 150.75 in.). Distances less than the minimum distance of the
sensor are ignored.
Max Dist
Selects the maximum distance from the sensor to the water. Options: 0.13 to
3.96 m (10.50 to 156.00 in.). Distances more than the maximum distance of the
sensor are ignored.
Profile
Do not change this setting without guidance from technical support. This setting
is used to increase the performance of the sampler when the sampler is used in
very difficult conditions. Options: Free Air Low, Free Air Mid (default), Free Air
High, Stilling Tube Low, Stilling Tube Mid or Stilling Tube High.
Transmit Power
Do not change this setting without guidance from technical support. This setting
is used to increase the performance of the sampler when the sampler is used in
very difficult conditions. Options: 2 to 30 (default: 10).
Option
Description
Basic Settings
Sensor
Selects the installation direction of the sensor. Select Reversed if the sensor is
Direction
installed in the reverse direction. Options: Normal (default) or Reversed.
Sensor Offset
Sets the offset used to adjust the measured level value to the correct value.
Sediment
Enters the level of sediment in the bottom of the channel. Options: 0.00 to 0.30 m
(0.00 to 12.00 in.).
Level Offset
Enters the difference between the measured level and the actual level.
(optional)
Options: –0.61 to 0.61 m (–24.00 to 24.00 in.). Use to correct an offset error
without having to do a calibration.
Flow Settings
Device
Selects the primary device. Enters the device specifications.
For additional information, refer to the expanded user manual on the
manufacturer's website.
Table 6 Configuration options—AV9000S sensor
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