Chemtrac HydroAct 4, Руководство пользователя

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3.1 PC6 Particle Counter 51
3.1.5.13 Parameter Flags
The parameter flags show the state of an individual parameter of a particular sensor. These flags can
either be active or not. To see the state of these parameter flags, select:
Options → Device Flags → Parameter Name
Flags that are active are shown in black text on a white background, those that are not active are
grayed out. Available flags are:
Alarm 1 active The first parameter data alarm is active and triggered.
Alarm 2 active The second parameter data alarm is active and triggered.
Averaging enabled The value displayed for this parameter is averaged.
Threshold 1 active
The first parameter threshold is active and triggered.
Threshold 2 active
The second parameter threshold is active and triggered.
3.1.5.14 Connections
As the HydroAct 4 is a modular system the exact wiring details will be specific to each order. Electrical
connections required can be viewed by selecting:
Options
→
Connections
In the image above, the left side shows the position of the connector. The right side shows the
connections required on the marked connectors.
Disconnect the power before making or breaking electrical connections.
3.1.6 Maintenance
It is important that a consistent flow rate be maintained since the data produced by the particle counter
is based on the sample volume. As the tubing and flow cell become dirty, flow will be restricted.
Therefore it is necessary that a proper maintenance schedule be followed to ensure the flow rate is
not adversely impacted from fouling. If adequate sample pressure is available, the constant head flow
through the control weir will maintain an accurate flow rate through the sensor. Flow problems will
only be caused by fouling of the flow cell and fouling of the tubing and barb fittings. Obviously, the
more turbid the sample, the more likely clogging or fouling will occur. If raw water is being sampled,
it is recommended that a small 40 mesh strainer be placed in line before the sensor to catch debris.
Cleaning of the flow cell should be performed on a regular basis. How often the flow cell should be
cleaned will vary depending on water quality. It is possible to set a cell condition alarm or threshold to
alert users to clean the flow cell as the cell condition falls below the set value. Any standard laboratory
cleaner can be used to clean the flow cell. If iron or manganese build up is a problem, vinegar, or
another mildly acidic liquid, can be used. The cleaner can be flushed through the flow cell, or applied