Hach-Lange CLT10 sc - Manual (Page 4)

Use of hazard information
D A N G E R
Indicates a potentially or imminently hazardous situation which, if not avoided, will result in death or serious injury.
W A R N I N G
Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or serious
injury.
C A U T I O N
Indicates a potentially hazardous situation that may result in minor or moderate injury.
N O T I C E
Indicates a situation which, if not avoided, may cause damage to the instrument. Information that requires special
emphasis.
Precautionary labels
Read all labels and tags attached to the instrument. Personal injury or damage to the instrument
could occur if not observed. A symbol on the instrument is referenced in the manual with a
precautionary statement.
This symbol, if noted on the instrument, references the instruction manual for operation and/or safety
information.
Electrical equipment marked with this symbol may not be disposed of in European public disposal
systems after 12 August of 2005. In conformity with European local and national regulations (EU
Directive 2002/98/EC), European electrical equipment users must now return old or end-of-life
equipment to the Producer for disposal at no charge to the user.
Note: For return for recycling, please contact the equipment producer or supplier for instructions on how to return end-
of-life equipment, producer-supplied electrical accessories, and all auxillary items for proper disposal.
Product overview
This product is primarily intended for use in municipal drinking-water applications. Wastewater and
industrial applications must be identified to be applicable by the manufacturer before installation.
The Reagentless Chlorine Analyzer monitors the concentration of free or total residual chlorine in
water, and is most reliable at residual chlorine concentrations higher than 0.1 ppm (mg/L). The
combination of a sc model controller with a three-electrode chlorine sensor, optional pH sensor and a
flow sensor give the best monitoring function. Both sensors read sample temperature. The pH sensor
transmits the temperature reading to the controller display. The chlorine sensor uses its temperature
measurement internally and does not transmit the measurement to the controller display. A pressure
regulator kit and an acidification and cleaning kit are available as accessories.
The chlorine and pH sensors rest in panel-mounted, series-connected flow cells. The flow cells
maintain the sensor-to-sample contact and help prevent the sensors from drying out when the
system is not in operation.
Figure 1 , Figure 2 , Figure 3 show overviews of the system and the flow
cells.
Each sensor connects to the controller through the gateway mounted on the panel. The gateway
converts analog signals from the sensors to digital signals used by the controller. The controller
converts the digital signals to the chlorine, pH and temperature measurement values and shows the
readings in the display. The controller supplies power to the sensors and to the digital gateway.
The controller can be configured to cause an alarm condition or warning if measurement values rise
above or fall below specified values. For information on controller alarms, refer to the controller user
manual.
Note: Refer to the sensor user manuals for information about how to store the sensors when the system is not in
operation.
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