Installation Considerations; Sample Line Guidelines - Hach CLF10sc Manual De Usuario

Figure 4 Reagentless chlorine analyzer panel
1 System panel
2 Connector cable for connecting gateway to
controller, 1 m (3.3 ft)
Section 4 Installation

4.1 Installation considerations

• Do the mechanical installation tasks first, the electrical installation tasks second, and the plumbing
installation tasks last.
• All fittings are designed to be tightened by hand only.
• The panel is designed to be wall or rack mounted indoors. Mount or position the panel in an
accessible location.
• Do not place the panel next to a heat source.
• Do not mount the panel in an environment with frequent vibrations
• Do not mount the panel in direct sunlight, which may affect chlorine readings.
• Install the panel indoors or in an environmental enclosure.
• Prevent condensation from collecting on the panel and panel components, especially the flow cell,
sensor and where the sensor and cable connect.
• Use PFA or PVDF linear low-density polyethylene tubing for the sample supply line and keep the
tubing as short as possible to minimize lag time.
• Sample pressure must be sufficient to keep a continuous water supply to the sensors. An LED
indicator on the flow sensor will be lit as long as the flow is sufficient.
• Keep the flow rate as constant as possible for best sensor operation.

4.2 Sample line guidelines

Select a good, representative sampling point for the best instrument performance. The sample must
be representative of the entire system.
To prevent erratic readings:
• Collect samples from locations that are sufficiently distant from points of chemical additions to the
process stream.
• Make sure that the samples are sufficiently mixed.
3 Tubing, 12 mm (½ in.)
4 Chlorine sensor
English 9