Siemens SITRANS LR200 7ML5422, Руководство по эксплуатации

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SITRANS LR200 with mA/HART
52
Operating Instructions, 05/2019, A5E32337676-AE
Parameter type Parameter name (number) Value Function
Apply? (Apply changes) (1.8.) YES
Independent
parameters
Timer (2.5.2.) (Page 103) 2 2 minutes
Material Level (2.5.1.) (Page 103) HI Hi
Auto False Echo Suppression Range
(2.8.7.2.) (Page 117)
[Distance
1)
mi-
nus 0.42 m]
Sets length of learned
TVT curve
2)
to use
Auto False Echo Suppression
(2.8.7.1.) (Page 115)
LEARN Enables the use of
learned TVT curve
2)
1)
Distance to product from sensor reference point.
2)
For more details, refer to Auto false echo suppression (2.8.7.1.) (Page 115) and Auto false
echo suppression range (2.8.7.2.) (Page 117).
Return to Measurement mode: press Mode
to start normal operation.
6.2.2.4 Application with stillpipe
A stillpipe is recommended for products with a dK of less than 3, or if extremely turbulent or
vortex conditions exist. This mounting arrangement can also be used to provide optimum
signal conditions on foaming materials.
Note
•
Near range (2.8.1.) (Page 110) (blanking) will be set at the factory. Check the Process
Device Tag for specific values.
•
Suitable pipe diameters are 40 mm (1.5”) to 100 mm (4”).
•
The pipe diameter must be matched with the horn size. Use the largest horn size that will
fit the stillpipe/bypass pipe (see Flanged horn dimensions (Page 158)).
•
For installation guidelines, refer to Mounting on a stillpipe or bypass pipe (Page 25).
This application is to obtain a level measurement and corresponding 4 to 20 mA output
proportional to the oil level in a fuel storage vessel.
● Low Calibration Pt. is 5 m (16.5 ft) from the sensor reference point.
● High Calibration Pt. is 0.5 m (1.65 ft) from the sensor reference point.
● The stillpipe inside diameter is 50 mm (1.96").
● The maximum rate of filling or emptying is about 0.1 m (4")/min.