Siemens Sitrans Probe LR, Быстрый старт, Страница: 15 / 162

A5E32106153 SITRANS Probe LR – QUICK START MANUAL Page EN-13
m
mmmm
Englis
h
5. (Set process empty level (P006:
Empty)
Empty can be set to any distance: not
necessarily the bottom of the tank.
6. Set measurement range (P007: Span)
Span can be set at any distance above
Empty level.
7. Minimize false reflections: Set P838
(Auto False-Echo Suppression
Distance)
8. Enable False Echo Suppression: set
P837 (Auto False Echo Suppression.
Using P837 and P838 (perform this function at low tank levels)
1
Note:
Setting P006 resets Span, if it has not
previously been set to a different value.
Value
Range 0.0000 to 20.00 m (65.6 ft)
Default 20.00 m (65.6 ft) max. range
Value
Range 0.0000 to 20.00 m (65.6 ft)
Default
19.56 m (64.1 ft)
(See note on next page.)
P007
P006
(100% Level)
(0% Level)
Level
Empty
Span
reference
point
Space
Distance
Notes:
• The default setting for Span is based on Operation (P001) and Empty (P006). Span is set to
Empty minus 110% of Blanking distance
1
, unless Operation is set to distance (P001=3). In
that case, Span is set to Empty distance.
• Always prevent the monitored surface from approaching within 0.3 m (1 ft) of the
transducer face.
Value
Range:
0.0000 to 20.00 m (65.6 ft)
* 1.000 m (3.28 ft)
Value
0
Off
1 *
Use "learned" TVT
2
"Learn"
Notes:
• P837 and P838 should be used together to adjust the TVT (Time Varying Threshold) curve.
• Use this function only if there is at least 2 m (6.5 ft) from the reference point to the
material.
• Set P837 and P838 during start up, if possible.
• If the vessel contains an agitator, the agitator should be running.
1.
Default setting for Blanking is 0.3 m (1 ft) plus shield length.
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