Deltabar S FMD77, FMD78, PMD75 with FOUNDATION Fieldbus
Document information
Hauser
7
1.5
Turn down calculation
A0029545
Fig. 1:
1
Calibrated/Adjusted measuring span
2
Zero-based span
3
Upper range limit
LRV
URL
URV
LRL
1 = 2
3
Example
• Sensor: 10 bar (150 psi)
• Upper range limit (URL) = 10 bar (150 psi)
Turn down (TD):
• Calibrated/Adjusted measuring span: 0...5 bar
(0...75 psi)
• Lower range value (LRV) = 0 bar
• Upper range value (URV) = 5 bar (75 psi)
TD =
URL
|URV
-
LRV|
TD =
10 bar (150 psi)
= 2
|5 bar (75 psi)
-
0 bar (0 psi)|
In this example, the TD is thus 2:1.
This span is based on the zero point.
Содержание Deltabar S FMD77
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