Yokogawa digitalYEWFLO (DY) - Manual (Page 121)

<13. GENERAL SPECIFICATIONS>
13-11
IM 01F06A00-01EN
13.3.2 Option Reduced Bore Type (/R1, /R2)
This option is the same as standard specifi cation except the following items.
Reduced Bore Type (Option: /R1, /R2) (Note1)
(Note 2)
B A
F1306.ai
Model
Code
Flange
piping
size
(A)
R1 Detector size
(inner dia.) (B)
R2 Detector size
(inner dia.) (B)
[Pressure Loss]
R1: about 15% increases to
standard type.
R2: about 28% increases to
standard type.
Refer to Section 13.5 “Detailed
Accuracy” DY025 25mm 15 (14.6) (mm) (Note 3)
DY040 40mm 25 (25.7) (mm)
15 (14.6) (mm)
(Note 3)
DY050 50mm 40 (39.7) (mm) 25 (25.7) (mm)
DY080 80mm 50 (51.1) (mm) 40 (39.7) (mm)
DY100 100mm 80 (71) (mm) 50 (51.1) (mm)
DY150 150mm 100 (93.8) (mm) 80 (71) (mm)
DY200 200mm 150 (138.8) (mm) 100 (93.8) (mm)
Measurable minimum
fl ow velocity
Liquid, Gas, Steam Refer to Table 13.5.
Range of measurable
fl ow velocity
Liquid, Gas, Steam Refer to Table 13.6.
(Note 1) For accuracy, refer to Section 13.5 “Detailed Accuracy”. Cryogenic Version /LT and SAA Intrinsically safe /SS1 are not available.
(Note 2) Flange type only: JIS10K, 20K (BJ1, BJ2) and ANSI150, 300 (BA1, BA2, BS1, BS2)
(Note 3) High process temperature version /HT and Multi-variable type /MV for DY025/R1 and DY040/R2 are not available.
13.4 Sizing
The following items are the basic specifi cations.
In case of the defi nite sizing, it is neccessary to check by the sizing software.
 Measurable minimum fl ow velocity
Table 13.5 Relationship between Minimum Velocity and Density
Model Code Liquid Gas, Steam (Note1)
Standard
Type,
Multi-Variable
Type(/MV)
Reduced
Bore Type
(/R1) (Note2)
Reduced
Bore Type
(/R2) (Note2)
Standard Type,
Cryogenic Version
(/LT)(Note2),
Multi-Variable Type
(/MV)
Unit: m/s
High Process
Temperature
Version(/HT),
High Process
Temperature
Version Multi-
Variable Type
(/HT/MV)
Unit: m/s
Standard Type,
Cryogenic Version
(/LT)(Note2),
Multi-Variable Type
(/MV)
Unit: m/s
High Process
Temperature
Version(/HT),
High Process
Temperature
Version Multi-
Variable Type
(/HT/MV)
Unit: m/s
DY015 DY025/R1 DY040/R2 250/ ρ — 80/ ρ or 3 —
DY025 DY040/R1 DY050/R2 122.5/ ρ 490/ ρ 45/ ρ or 2 125/ ρ or 2
DY040 DY050/R1 DY080/R2 90/ ρ 302.5/ ρ 31.3/ ρ or 2 90.3/ ρ or 2
DY050 DY080/R1 DY100/R2 90/ ρ 160/ ρ 31.3/ ρ or 2 61.3/ ρ or 2
DY080 DY100/R1 DY150/R2 90/ ρ 160/ ρ 31.3/ ρ or 2 61.3/ ρ or 2
DY100 DY150/R1 DY200/R2 90/ ρ 160/ ρ 31.3/ ρ or 2 61.3/ ρ or 2
DY150 DY200/R1 — 90/ ρ 160/ ρ 31.3/ ρ or 3 61.3/ ρ or 3
DY200 — — 122.5/ ρ 202.5/ ρ 45/ ρ or 3 80/ ρ or 3
DY250 — — 160/ ρ 360/ ρ 61.3/ ρ or 3 125/ ρ or 3
DY300 — — 160/ ρ 360/ ρ 61.3/ ρ or 3 125/ ρ or 3
DY400 — — 250/ ρ 490/ ρ 80/ ρ or 4 125/ ρ or 4
ρ: Density at operating conditions (kg/m 3 ), Liquid density range is 400 to 2000 kg/cm 3
(Note1) The case of gas, it is whichever is greater than a fi xed value of each model and calculated from density.
(Note2) Reduced bore type /R1 or /R2 are not available to combine for Cryogenic Version /LT.