Hach AS950 Basic Operations page 9

Table 6 Configuration options—AV9000S sensor (continued)
Option Description
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.
Advanced Settings
AV9000S Level Filter Settings—Selects the type of filter and the filter size (factory default is none). Takes the
average and/or median of 3, 5, 7, 9 or 11 data points to reduce noise or outliers. Only the
average and/or median values are logged—raw data values are not logged. A significant
delay can occur before sudden changes in flow are logged, therefore this option is not
recommended for stormwater applications. Options: None, Average, Median or Average and
Median.
AV9000S Neg. Vel to Zero—Enable to replace all negative velocity measurements with 0. Site
Velocity Multiplier—The value that adjusts the sensor velocity reading to be the same as the velocity
reading from a different instrument. If not sure, use the default value of 1.0. Low Level
Cutout—Forces the velocity to a substitute value when the level measurement is below a
user-specified value. The value of the substitute velocity is typically 0. The factory default is
enabled at 0.8 inches. Filter Settings—Selects the type of filter and the filter size (factory
default is none). Takes the average and/or median of 3, 5, 7, 9 or 11 data points to reduce
noise or outliers. Only the average and/or median values are logged—raw data values are not
logged. A significant delay can occur before sudden changes in flow are logged, therefore this
option is not recommended for stormwater applications. Options: None, Average, Median or
Average and Median.
Configure the AUX I/O port
Configure the AUX I/O port if the AUX I/O port is connected to a Hach flow meter or third-party
device.
Note: If the optional IO9000 module is connected to the AUX I/O port, refer to the IO9000 module documentation to
configure the AUX I/O port.
1. Push MENU.
2. Select Hardware Setup>AUX and I/O Port.
3. Make sure that Type is set to AUX.
4. Select an option.
Option Description
Mode Selects the AUX I/O port mode of operation. Sample Event—Sends sample information to a
Hach flow meter when a sample is collected: time stamp for the sample, success or fail and
the bottle number. When there are two sampling programs, the sample information is sent
when a sample is collected by either sampling program. Program Complete—Sends a signal
when the sampling program is complete. Refer to the auxiliary connector information in the
AS950 sampler documentation. When there are two sampling programs, a signal is sent when
both sampling programs are complete.
Flow Selects the type of flow input signal that is supplied by the flow meter to the AUX I/O port.
Reading Options: AUX-Pulse or AUX-mA (4–20 mA).
5. When Flow Reading is set to AUX-Pulse, configure the sampler pacing setting of the external flow
meter. The sampler pacing setting identifies the flow volume that agrees with one pulse (one
count) from the flow meter. Refer to the flow meter documentation.
6. When Flow Reading is set to AUX-mA, select an option.
Note: To set the AUX I/O port settings and the analog input calibration to the factory defaults, select Restore
Defaults.
Option Description
Flow Unit Selects the flow units that show on the display. Options: cubic meters (m
minute or second or liters (L) per day, hour, minute or second.
3
) per day, hour,
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