Yokogawa digitalYEWFLO (DY) - Manual (Page 122)

<13. GENERAL SPECIFICATIONS>
13-12
IM 01F06A00-01EN
 Range of measurable fl ow velocity
Table 13.6 Range of measurable fl ow velocity
Fluid Model Code Minimum fl ow velocity
Maximum
fl ow
velocity
Liquid
DY015
to
DY400
DY025 /R1
to
DY200 /R1
DY040 /R2
to
DY200 /R2
“fl ow velocity obtained from Table 13.5” or “fl ow velocity at Reynolds
number of 5000”, whichever is greater.
For liquid Reynolds number of 5000: Refer to Section 13.5 “Detailed
Accuracy”.
10m/s
Gas,
Steam
DY015
to
DY400
DY025 /R1
to
DY200 /R1
DY040 /R2
to
DY200 /R2
“fl ow velocity obtained from Table 13.5” or “fl ow velocity at Reynolds
number of 5000”, whichever is greater.
For Gas and steam Reynolds number of 5000:
Refer to Section 13.5 “Detailed Accuracy”.
80m/s
When the fl ow velocity is lower than minimum, both the analog output and the pulse output is displayed as “0”.
 Range of fi xed accuracy fl ow velocity
Table 13.7 Range of fi xed accuracy fl ow velocity
Fluid Model Code Minimum fl ow velocity
Maximum
fl ow
velocity
Liquid
DY015
to
DY100
DY025 /R1
to
DY150 /R1
DY040 /R2
to
DY200 /R2
“fl ow velocity obtained from Table 13.5” or
“fl ow velocity at Reynolds number of 20000”, whichever is greater.
For liquid Reynolds number of 20000: The value is four times
velocity value in Section 13.5 “Detailed Accuracy”.
10m/s
DY150
to
DY400
DY200 /R1 ―
“fl ow velocity obtained from Table 13.5” or “fl ow velocity at
Reynolds number of 40000”, whichever is greater.
For liquid Reynolds number of 40000: The value is eight times
velocity value in Section 13.5 “Detailed Accuracy”.
Gas,
Steam
DY015
to
DY100
DY025 /R1
to
DY150 /R1
DY040 /R2
to
DY200 /R2
“fl ow velocity obtained from Table 13.5” or “fl ow velocity at
Reynolds number of 20000”, whichever is greater.
For gas and steam Reynolds number of 20000:
Refer to Section 13.5 “Detailed Accuracy”.
80m/s
DY150
to
DY400
DY200 /R1 ―
“fl ow velocity obtained from Table 13.5” or “fl ow velocity at
Reynolds number of 40000”, whichever is greater.
For gas and steam Reynolds number of 40000:
Refer to Section 13.5 “Detailed Accuracy”.