Micro Motion RFT9709 Instrukcja Obsługi Strona 155

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Using ProLink
®
Software with Micro Motion
®
Transmitters
141
Calibrate Menu
continued
Density calibration
Applications Menu Help Menu
Configure Menu:
Meter Factors
Calibrate Menu Test Menu
Table 14-2. Density of air
4. To perform the high-density calibration:
a. Fill the sensor with a high-density fluid, such as water.
b. If possible, shut off the flow. Otherwise, pump the fluid through
the sensor at the lowest flow rate allowed by the process. The
rate must be less than the flow rate listed in
Table 14-3
, or the
calibration will be in error. To ensure stable density, make sure the
fluid in the flow tubes remains completely free of gas bubbles
during the calibration.
Pressure
in-Hg (millibar)
Density in g/cc at:
10
°
C
50
°
F
15
°
C
59
°
F
20
°
C
68
°
F
25
°
C
77
°
F
30
°
C
86
°
F
35
°
C
95
°
F
40
°
C
104
°
F
45
°
C
113
°
F
50
°
C
122
°
F
25.14 (850) 0.0010 0.0010 0.0010 0.0010 0.0010 0.0010 0.0009 0.0009 0.0009
26.62 (900) 0.0011 0.0011 0.0011 0.0010 0.0010 0.0010 0.0010 0.0010 0.0009
28.10 (950) 0.0012 0.0011 0.0011 0.0011 0.0011 0.0011 0.0010 0.0010 0.0010
29.57 (1000) 0.0012 0.0012 0.0012 0.0012 0.0011 0.0011 0.0011 0.0011 0.0011
31.06 (1050) 0.0013 0.0013 0.0012 0.0012 0.0012 0.0012 0.0012 0.0011 0.0011
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