Siemens SITRANS L Series - Buildup Detection (8;16 Ma or 4 to 20 Ma Version)

Operating
3.5 Buildup detection (8/16 mA or 4 to 20 mA version)
SITRANS LVS100/200
Operating Instructions, 01/2019, A5E44839609-AA
13
3.5
Buildup detection (8/16 mA or 4 to 20 mA version)
With the 4 to 20 mA setting, you can recognize material buildup on the fork using a PLC or
data logger. In this mode, the Diagnostic setting has no influence. The LED showing signal
output is off.
●
20 mA:
The fork is clean.
●
<20 mA and >12/12.5 mA:
The vibration amplitude is decreased by the material buildup.
●
<12/12.5 mA and >7/8 mA:
This range indicates a weak vibration. The internal LED
showing diagnosis begins blinking to indicate a weak signal. If you are using a PLC to
evaluate the echo, delay the response time to this indicator for approximately 10
seconds. A hysteresis of 0.5 mA (between 12 and 12.5 mA) is recommended.
●
7/8 mA:
This point indicates that the fork is mostly encrusted.
●
6 mA:
This point indicates that the fork is fully encrusted.
With setting "high sensitivity"
With setting "low sensitivity"
①
Amplitude is 100%
③
Amplitude is 100%
②
Amplitude is 0%
④
Amplitude is 0%