Endress+Hauser Liquitrend QMW43, Руководство по эксплуатации

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Liquitrend QMW43 Operation
Hauser 17
Position 2: red (RD) warning or fault
• Warning/maintenance required:
Flashing: error is remediable, e. g. invalid adjustment
• Fault/device failure:
Lit: see diagnostics and troubleshooting
There is no external signaling via LEDs on the metal housing cover (IP69).
9.3 Changing device parameters via IO-Link
Block configuration:
All changed parameters become active only after download.
Direct configuration:
A single changed parameter becomes active immediately after input.
Confirm each change with Enter to ensure that the value is accepted.
L
WARNING
Risk of injury and damage to property due to uncontrolled activation of processes!
‣
Make sure that downstream processes are not started unintentionally.
Commissioning with customer-specific default settings:
The device can be put into operation without any additional configuration.
Commissioning with factory settings:
If an application-specific setting is required, the span and the output assignment can be
adjusted via the IO-Link interface.
10 Operation
10.1 Measurement of buildup in pipes or tanks
10.1.1 Application example
• System state = emptied
• Output OU1 setting on device = buildup (buildup measurement)
• Output OU2 setting on device = conductivity
The device is installed in a pipe or on a tank wall. During the process, there are times when
the pipe or tank is not filled.
For the purpose of controlling a cleaning cycle and ensuring the quality of the end product,
it is important to know whether residues of the medium or cleaning agent are still present.
The device detects the thickness of the buildup in the pipe or on the tank wall. The buildup
measurement is output as a measured value at the output used.
The thickness of the buildup can be output in the range from 0 to 10 mm, as shown in this
example.
The output is set to ≥ 0.1 mm as long as it is still possible to detect an electrical
conductivity of a medium or cleaning agent, for example.
Examples of media: biofilms, very thin, conductive films of dirt or films caused by
residue of the cleaning agent used are output with a value of 0.1 mm.
Output OU2 (set to conductivity) outputs the conductivity actually present without
temperature compensation. This makes it possible to differentiate contamination with
chemicals from the medium. Examples: