Watts HF Scientific AccUView LED Ex Installation Instructions Manual

Also see for HF Scientific AccUView LED Ex: Quick start guide

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Watts HF Scientific AccUView LED Ex Installation Instructions Manual Manual pdf 11 page image

IS-HF-AccUViewLEDEx-100125 Rev 0 11Ultrasonic CleaningThis option is used to continuously clean the flow through cuvette. It isnot intended to clean cuvettes that are already dirty or replace manualcleaning entirely. The system will increase the time between cleaningsdramatically. Please note that the system requires the use of a specialcuvette. This cuvette must be used for the system to operate correctly.The system works by sending an ultrasonic frequency through springconnections into a piezo transducer bonded to the bottom of a flowthrough cuvette. The ultrasonic frequency generated by the cleaningsystem is virtually not detectable at 1 meter distance with the enclosuredoor open or closed.The system can detect that an incorrect cuvette is installed, an errorhas occurred in the transducer or the transducer is not making contactwith the spring connections. This error is indicated by CLN on thescreen. Since this is an error condition, the 4-20mA will be affectedbased on the set error level.After installing a flow through cuvette, there will be a 30-minute periodwhere the ultrasonic circuit will not operate to allow the vapor purgesystem to remove all moisture from the ultrasonic transducer.Even with the above drying system, it is still recommended thatultrasonic cuvettes be dried by hand, including the transducer on thebottom, prior to use.Ultrasonic cleaning has the option to be turned OFF. The defaultsetting is On.1. Use the  and  buttons to select the desired cleaning option.2. Once the desired cleaning option is selected, press the  button toset it.RS-485 Parameter - BitsThis is the first of three menus to setup the RS-485 parameters. Thesemenus will only appear if the RS-485 mode is selected. There are 2options, 7 or 8 bits; the factory default is 8 bits.1. Use the  and  buttons to select the desired bits selection.2. Once the desired option has been selected, press the  button toset it.RS-485 Parameter - ParityThere are 3 parity options in this menu. Those options are No Parity(nOnE), odd parity (Odd) or even parity (E); the factory default is noparity.1. Use the  and  buttons to select the desired parity option.2. Once the desired option is selected, press the  button to set it.RS-485 Parameter - Stop BitsThere are 2 options for this menu, 1 stop bit or 2 stop bits; the factorydefault is 1 stop bit.1. Use the  and  buttons to select the desired stop bit setting.2. Once the desired option has been selected, press the  button toset it.Duty CycleThe duty cycle determines how often the LED turns on and updatesthe reading. The LED will operate for 1 second each time to obtainreadings. The duty cycle can be set from 4 to 60 seconds; the factorydefault is 6 seconds. This setting also affects the life of the LED. Withthe duty cycle set to 4 seconds, the life of the LED is about 4 years.The factory default setting of 6 seconds will theoretically extend theLED life to over 5 years. The 60 second setting theoretically extendsthe life of the LED to about 14 years, but will delay all updates.1. Use the  and  buttons to select the desired number of secondsfor the duty cycle.2. Once the desired number of seconds has been selected, press the button to set it.Desiccant WarningWhen the humidity detector in the AccUView LED Ex indicates that theinternal environment is close to the point where humidity may causecondensation, the instrument will display DESC as a warning on thescreen. The default setting is OFF, which means it will only displayDESC on the screen. Turning the setting to ON will affect the 4-20mAsignal based on the set error level as well as display the DESC warningon the screen. Refer to Setting the Error Level section earlier in themanual.1. Use the  and  buttons to select the desired option.2. Once the desired option is selected, press the  button to set it.Screen Display - RS-485 BitsScreen Display - RS-485 ParityScreen Display - Ultrasonic CleaningScreen Display - RS-485 Stop BitsScreen Display - Duty CycleScreen Display - Desiccant Warning