Maintenance (3.3.); Transducer Enable (3.3.1.) - Siemens SITRANS L 7ML5400 Operating Instructions Manual

Parameter reference (LUI)
9.3 Maintenance and Diagnostics (3.)
Echo Strength (3.2.9.3.)
Displays the absolute strength (in dB above 1 μV rms) of the echo selected as the
measurement echo.
Values (view only)
In SIMATIC PDM, open the menu Device – Echo Profile Utilities and click on the tab Echo
Profile.
Noise Average 3.2.9.4.)
Displays the average ambient noise (in dB above 1 μV rms) of a noise profile after each
measurement.
The noise level is a combination of transient acoustic noise and electrical noise (induced into
the transducer cable or receiving circuitry). See Noise Problems (Page 280).
Noise Peak (3.2.9.5.)
Displays the peak ambient noise (in dB above 1 μV rms) of a noise profile after each
measurement.
9.3.3

Maintenance (3.3.)

Note
Default settings in the parameter tables are indicated with an asterisk (*) unless explicitly
stated.
9.3.3.1

Transducer Enable (3.3.1.)

Enables/disables transducer from taking measurements.
Options
Set parameter to Disabled to stop transducer from measuring while calibration or
maintenance work is performed. Set to Enabled to restart measurements after calibration or
maintenance complete.
Note
• An Echo Profile (3.2.1.) (Page 246) cannot be requested from LUI when Transducer Enable
(3.3.1.) is set to DISABLED. The local push button will not operate.
• When Transducer Enable (3.3.1.) is set to DISABLED, the LOE fault will display
immediately.
• If Transducer Enable (3.3.1.) is set to DISABLED and power to the device is turned off,
Transducer Enable (3.3.1.) will be reset to ENABLED when power is restored.
250
Range: -20 to 128 dB
*
Operating Instructions, 04/2021, A5E33329501-AG
ENABLED
DISABLED
SITRANS LUT400