Yokogawa RotaMASS 3-Series - Manual (Page 57)

8. GENErAL SPECIFICATIONS
8-3 IM 01R04B05-00E-E 3rd edition July 30, 2010 -00 all Rights Reserved. Copyright © 2005, Rota Yokogawa
Maximum tube pressure for SL/SH up to 27°C (Rt=Room temp.):
- RCCS30 / 31 / 32
: 285 bar
- RCCS33 : 185 bar
- RCCS34 / RCCt34 : 260 bar
- RCCS36 / RCCt36 : 210 bar
- RCCS38 / RCCt38 : 175 bar
- RCCS39 / RCCt39 : 135 bar
- RCCS39/IR / RCCt39/IR : 110 bar
- RCCS39/XR / RCCt39/XR : 95 bar
For higher medium temperatures maximum tube pressure
needs to be derated as follows :
up to 50 °C
: 4% derating
51 to 100 °C : 11% derating
101 to 150 °C : 20% derating
151 to 230 °C : 30% derating
231 to 350 °C : 38% derating
Higher pressure on request.
the maximum process pressure of a single instrument is
given by the lower value either of the process connections
(table 9) or tubes. the maximum temperature and process
pressure limits of an instrument are marked on the name-
plate as tS and PS.
Gas content limits for liquid/gas mixtures
Gas content limit is defined as the amount of gas in a liq-
uid/gas mixture which generates an error (frequency error) in
the converter. the gas content limit is dependent on viscosity,
surface tension and bubble size of the liquid/gas mixture.
Furthermore it is highly flow rate dependent (the higher the
flow rate, the lower the gas content limits). the stated values
are for a flow of 50% of Qnom and water/air without /HP:
- RCCS32 to 33 : no limitation
- RCCx34 : no limitation
- RCCx36 : approx. 50%
- RCCx38 : approx. 30%
- RCCx39 : approx. 7%
- RCCx39/IR : approx. 3%
- RCCx39/XR (with /HP) : approx. 2%
With option /HP the gas content limits are improved.
With liquid/gas mixtures the specified mass flow accuracy will
not be achieved.
For short time aeration a function can be activated to keep
the current outputs constant during the aeration time.
Secondary containment
the housings of the RCCS30-33 and the RCCx39/XR are
not rated for secondary containment. Rupture pressure for
RCCx34-38 is typically above 120bar, for RCCx39 above 80
bar, for RCCx39IR above 50bar.
However if the detector housing is exposed to this pressure
it will deform and measurement will be strongly influenced.
therefore the pressure test of the housing (option /J1) can
only be done at the pressure where deformation does not
happen.
2 phase flow, liquid/solid and liquid/liquid
2 phase flow can generate minus span errors. the errors
are proportional to the difference in density between the 2
phases and the amount of the second phase. If the particles
(or droplets) are very small no errors will be generated.
Power supply and power consumption
- aC-type
: 90 to 264 V aC, 47-63 Hz
For Ex version 250 V aC max.
- DC-type : 20.5 to 28.8 V DC
Consumption : max. 25 Va / 10 W
MECHANICAL SPECIFICATIONS
Protection class
- RCCt3x : IP66/67
- RCCF31 : IP66/67
- RCCS3x : IP66/67
- RCCS option/tx : IP54
Materials
- Detector housing : Stainless steel 304/1.4301
- Detector terminal box : 316L/1.4404
- Detector gas filling plug: 1.4305
- Detector rupture disk (/RD)
: 316L
- Converter housing : aluminium alloy with Polyurethane
corrosion-resistant coating or
epoxy coating (option /X1)
Coating colour
- Converter case : Mint green
Wetted parts
- RCCS30 to 33 :
tubes : Hastelloy C-22/2.4602
Process connections : 316L / 1.4404
- RCCx34 to 39/IR :
tubes and process connection
: 316L / 1.4404/1.4435 or
Hastelloy C-22/2.4602
- RCCx39/XR :
tubes and process connection
: 316L / 1.4404
table 5 : Diameter of measuring tubes
type RCCS30 RCCS31 RCCS32 RCCS33
Inner
diameter
mm 1.2 2.1 3 4.5
Wall thick-
ness
mm 0.2 0.25 0.25 0.25
type RCCx34 RCCx36 RCCx38 RCCx39
RCCx39
/IR
RCCx39
/XR
Inner
diameter
mm 7.6 13.4 22.1 37.2 55.1 82.50
Wall thick-
ness
mm 0.91 1.24 1.65 2.6 2.9 3.2
Pressure Equipment directive 97/23/EC
- Module : H; Fluid group : 1; Category : III
RCCx34-RCCx38 : Fluid group 2, SEP
RCCx39-RCCx39/XR : Fluid group 2, Cat. I
For all process connections
: CRn 0F12074.5