Instruction Manual


11-1
IM 01R04B04-00E-E 8th edition March 01, 2011 -00
All Rights Reserved. Copyright © 2003, Rota Yokogawa


Qnom is the water ow rate at about 1 bar pressure drop.
The owmeter has a default low cut of 0.05% of Qnom.
Accuracy mass ow
Liquid : ± 0.1% of ow rate
± zero stability / ow rate *100%
(refer to table 11-2)
Gas (option /GA) : ± 0.5% of ow rate
± zero stability / ow rate *100%
(refer to table 11-2)
Accuracy volume ow
SQRT ( (mass ow 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) / ow 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


- Remote detector RCCS30 to 33: 2 tubes, low ow design
- Remote detector RCCS34 to 39/XR: 2 tube design
- Remote eld-mount converter RCCF31
- Remote rack-mount converter RCCR31
- Integral type RCCT34 to 39/XR: 2 tube integral design
 : Liquid, gas or slurries
 : Mass ow, density, temperature
and derived from these values:
concentration, volume ow and
net ow

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

The stiffness of the ROTAMASS tubes is slightly line pressure
dependent. The static pressure effect of mass ow and
density can be corrected by setting the static pressure manually
via menu.
Table 11-3 : Static pressure effect on mass ow (if not corrected)
     



 ---- ---- ---- ---- 0.00081
 0.00000 0.00012 0.00246 0.02094 0.00084
   







 0.00346 0.00950 0.01058 0.02920 0.00740
 0.00336 0.00896 0.00808 0.01780 ----

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):
   
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
Specication of high performance density measurement
(option /K6):
Ambient temp. range : -10°C to 50°C
Fluid temp. range : -50°C to 150°C
Minimum ow rate for specied accuracy:
- RCCx36 to RCCx39 : 700 kg/h
- RCCx34 : 140 kg/h
- RCCS33 : 90 kg/h
- RCCS32 : 37 kg/h
Maximum ow 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 inuence :
0.000015 g/cm³ * abs(Tuid-20°C)
-1.0
-0.9
-0.8
-0.7
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
0 50 100 150
Flow in % of Qnom
Error in %
F10.EPS