Hach AS950 AWRS, Operation Manual

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Option Description
Sensor Ports Tells the sensors connected to the sampler do a measurement and supply
advanced information used to identify if the sensor operation is correct. Shows the
measurements and information applicable to the measurements. Shows the type
and firmware version for each sensor.
AUX (or
IO9000 module) Shows the configuration settings for the AUX I/O port, the flow input signal
(0/4–20 mA) and the flow value. In addition, information used by technical support
shows (ADC counts, Cal gains and Cal offsets).
Note: If the optional IO9000 module is connected to the AUX I/O port, the
configuration and status of the analog inputs, analog output, digital outputs and
relays show after the IO9000 module is configured.
Distributor Moves the distributor arm to all the bottle positions regardless of the number of
bottles that are selected in the sampling program.
Note: To do a diagnostic test for the distributor arm, the sampling program must be
configured for multiple bottles.
Keypad Shows each key that is pushed on the keypad.
Display Sets each pixel of the display to on and off in different patterns.
Memory Shows the percent of the controller memory used.
Calibrate the liquid detector
If the samples composition is very different than tap water, calibrate the liquid detector with the
guidance of technical support. For example, turbidity more than 1000 NTU or solids more than 2%.
1. Put the intake tubing into the sample water.
2. Push MENU .
3. Select Hardware Setup>Liquid Detect>Status. Make sure that the liquid detector is enabled.
4. Select Calibrate>Next. The pump operates in reverse to purge the intake tube. The pump then
operates in the forward direction.
5. When the sample goes through the liquid detector and bubbles are not present, push STOP . The
intake tube is automatically purged. The liquid detector calibration is complete. Make sure that the
display shows no errors occurred.
6. Push Finish to exit or push Retry to do the calibration again.
Appendix
Manning roughness coefficients
Refer to Table 12 and Table 13 for the Manning roughness coefficients.
Table 12 Closed conduit—partly full
Metal
Steel Lockbar and welded 0.010 0.012 0.014
Riveted and spiral 0.013 0.016 0.017
Cast iron Coated 0.010 0.013 0.014
Not coated 0.011 0.014 0.016
Wrought iron Black 0.012 0.014 0.015
Galvanized 0.013 0.016 0.017
Corrugated Subdrain 0.017 0.019 0.021
Storm drain 0.021 0.024 0.030
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