Yokogawa RotaMASS 3-Series - Manual (Page 223)

11. TECHNICAl dATA
11-1
IM 01R04B04-00E-E 8th edition March 01, 2011 -00 All Rights Reserved. Copyright © 2003, Rota Yokogawa
11. TECHNICAl dATA
11.1 Specifications
Qnom is the water flow rate at about 1 bar pressure drop.
The flowmeter has a default low cut of 0.05% of Qnom.
Accuracy mass flow :
Liquid : ± 0.1% of flow rate
± zero stability / flow rate *100%
(refer to table 11-2)
Gas (option /GA) : ± 0.5% of flow rate
± zero stability / flow rate *100%
(refer to table 11-2)
Accuracy volume flow :
SQRT ( (mass flow error in %)² + (density error in %)²)
Please refer to the Yokogawa sizing software.
Accuracy based on the frequency output includes the com-
bined effects of repeatability, linearity and hysteresis.
Repeatability for liquids: ± 0.05%
± (zero stability/2) / flow rate*100%
Table 11-2 : Zero Stability
Type RCCS30 RCCS31 RCCS32 RCCS33
kg/h
0.005 0.0085 0.019 0.045
Type RCCx34 RCCx36 RCCx38 RCCx39
RCCx39
/IR
RCCx39
/XR
kg/h 0.15 0.5 1.6 5 13 25
pErFOrMANCE SpECIFICATIONS
Model
- Remote detector RCCS30 to 33: 2 tubes, low flow design
- Remote detector RCCS34 to 39/XR: 2 tube design
- Remote field-mount converter RCCF31
- Remote rack-mount converter RCCR31
- Integral type RCCT34 to 39/XR: 2 tube integral design
Fluid to be measured : Liquid, gas or slurries
Measurement Items : Mass flow, density, temperature
and derived from these values:
concentration, volume flow and
net flow
Mass Flow Measurement
Table 11-1: measuring range
Type RCCS30 RCCS31 RCCS32 RCCS33
Qmax t/h 0.1 0.3 0.6 1.5
Qnom t/h 0.045 0.17 0.37 0.9
Type RCCx34 RCCx36 RCCx38 RCCx39
RCCx39
/IR
RCCx39
/XR
Qmax t/h 5 17 50 170 300 600
Qnom t/h 3 10 32 100 250 500
pressure dependency
The stiffness of the ROTAMASS tubes is slightly line pressure
dependent. The static pressure effect of mass flow and
density can be corrected by setting the static pressure manually
via menu.
Table 11-3 : Static pressure effect on mass flow (if not corrected)
Type rCCS30 rCCS31 rCCS32 rCCS33 rCCx34
% of
rate
per bar SS ---- ---- ---- ---- 0.00081
HC 0.00000 0.00012 0.00246 0.02094 0.00084
Type rCCx36 rCCx38 rCCx39
rCCx39
/Ir
rCCx39
/Xr
% of
rate
per bar SS 0.00346 0.00950 0.01058 0.02920 0.00740
HC 0.00336 0.00896 0.00808 0.01780 ----
density Measurement
Adjustment with water and air at calibration temperature.
With option /K4 thermal stabilized.
For option /K6 see also “Special calibrations” on page 11-2.
Measuring range:
0.3 kg/l to 5 kg/l (RCCx39,
RCCx39/IR and RCCx39/XR to 2 kg/l)
No density measurement for gas application
Table 11-4: Accuracy (at calibration conditions):
Type Standard option /K4 option /K6
RCCS30 0.008 g/cm³ ------ ------
RCCS31 0.004 g/cm³ 0.001 g/cm³ ------
RCCS32 0.004 g/cm³ 0.001 g/cm³ 0.0005 g/cm³
RCCS33 0.004 g/cm³ 0.001 g/cm³ 0.0005 g/cm³
RCCx34 0.003 g/cm³ 0.001 g/cm³ 0.0005 g/cm³
RCCx36 0.0022 g/cm³ 0.001 g/cm³ 0.0005 g/cm³
RCCx38 0.0015 g/cm³ 0.001 g/cm³ 0.0005 g/cm³
RCCx39 0.0015 g/cm³ 0.001 g/cm³ 0.0005 g/cm³
RCCx39/IR 0.0015 g/cm³ ------ ------
RCCx39/XR 0.0015 g/cm³ ------ ------
Repeatability:
- RCCS32-33, RCCx34-39/XR : ± 0.0005 g/cm³ (Std, /K4)
Static pressure effect:
Compensated if static pressure is set in the menu
Specification of high performance density measurement
(option /K6):
Ambient temp. range : -10°C to 50°C
Fluid temp. range : -50°C to 150°C
Minimum flow rate for specified accuracy:
- RCCx36 to RCCx39 : 700 kg/h
- RCCx34 : 140 kg/h
- RCCS33 : 90 kg/h
- RCCS32 : 37 kg/h
Maximum flow rate : Qnom
Repeatability : ± 0.0002 g/cm³
Temperature measurement: ±0.5°C ±0.2% of reading
Density accuracy : ±0.0005g/cm³ (liquids not aerated /
no gas in the liquid)
Process temperature influence :
0.000015 g/cm³ * abs(Tfluid-20°C)
-1.0
-0.9
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0
0.1
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1.0
0 50 100 150
Flow in % of Qnom
Er
ro
r i
n
%
F10.EPS