Yokogawa RAMC - Manual (Page 76)

<9. TECHNICAL DATA>
9-4
IM 01R01B02-00E-E 10th edition January 01, 2013 -00 All Rights Reserved. Copyright © 2003, Rota Yokogawa
9.3 Standard Specifications
MEASURING TUBE
Materials of wetted parts :
- Stainless steel AISI 316L (1.4404)
- PTFE
- Other materials on request
Fluids to be measured :
suitable for a variety of liquids, gas and steam
Measuring range :
See table 11 and 12
Measuring range ratio :
10:1
Process connections / Stainless steel :
- Flanges : - acc. EN1092-1
DN100 – DN150 PN16
DN15 – DN100 PN40
DN50 – DN80 PN63
DN15 – DN50 PN100
- acc. ASME B 16.5
½” – 6“ Class 150 raised face
½” – 6“ Class 300 raised face
½” – 3“ Class 600 raised face
Roughness of sealing
Form B1 : RA 3.2 - 6.3
Form B2 : RA 0.8 - 3.2
ASME : RA 3.2 - 6.3
-Threaded connection :
- male acc. DIN 11851
- NPT- female
- G- female
- Clamp acc. DN25 / 1“ – DN100 / 4“
Process pressure :
Depends on process connection, see table 10 to 12
higher pressure (up to 700 bar) on request
Process temperature :
- medium wetted parts made of stainless steel
: -200 …+370 °C
- medium wetted parts made of PTFE
: -80 … +130 °C
See fig. 7a to 7c
Measuring accuracy :
Table 1
Material of
wetted parts Size Measuring accuracy
acc. Directive VDI/
VDE 3513 sheet 2
(q
G
=50%)
SS DN 15 - 100 1.6%
SS DN 125 - 150 2.5%
PTFE DN 15 -100 2.5%
Heat tracing
Pressure Equipment Directive (PED) Directive 97/23/EG :
Tubes :
- Modul : H
- Fluid Group : 1 (dangerous fluids)
- Produced acc. to category
: III
- Classification : Table 6 (piping)
Heating (options /T1 to /T6) :
- Art. 3 section 3 : (Volume < 1L)
- Fluid Group : 2 (non-dangerous fluids)
- Classification : Table 2 (vessels)
CANADIAN REGISTRATION NUMBERS (CRN ) available
upon request
Installation :
- Mounting direction : vertical
- Flow direction : upwards
- Mounting length : see tables 10, 12, 13, 14
- Straight pipe inlet length
: DN 80/100 at least 5D, not
necessary for smaller sizes
Weight :
See table 15
LOCAL INDICATOR
(Indicator/Transmitter Code -T)
Principle :
The indication is made by magnetic coupling of a magnet
enclosed in the float and a magnet in the indication unit,
which follows the movements of the float, with a pointer.
Indicator housing :
- Materials : - Stainless steel (1.4301 / 304)
(housing type 90)
- painted aluminium casting
(housing type 91)
each with safety-glass window
- Degree of protection :
- IP66/67
Scales :
- Standard : removable aluminium plate with scale
(double scale as option)
- Marking : direct readable units or percentage of Qmax.
Transportation- and Storage condition :
-40°C to +110°C
ELECTRONIC TRANSMITTER
(Indicator/Transmitter Code -E, -H, -G, -J)
Standard type (Code -E) :
Power supply :
- 4- wire units with galvanic isolation :
- 230 V AC +10 %/-15 %, 50/60 Hz,
fuse 0.063 A, time lag, (5x20) mm
- 115 V AC +10%/-15 %, 50/60 Hz,
fuse 0.125 A, time lag, (5x20) mm
- 2/3- wire units : - U = 14 V ... 30 V DC
Output signal :
- 4- wire units : - 0 - 20 mA, 4 – 20 mA
- pulse output (option /CP)
max. frequency 4 Hz see fig. 3-5
- 3- wire units : 0 - 20 mA, 4 - 20 mA
- 2- wire units : 4 - 20 mA
The 20 mA point is selectable between 60% and
100% of Qnom.
Load resistance :
- 4- wire units : ≤ 500 Ω
- 2/3- wire unit : ≤ (U - 14 V) / 20 mA, max. 500 Ω
HART- communication type (Code -H, -J) :
Power supply :
- 2-wire units : U = 14 V ... 30 V DC
Output signal :
- 2- wire units : 4 – 20 mA
Load resistance :
- HART-version : 250 … 500 Ω
Profibus PA - communication type (Code -G) :
- 2- wire bus connection not polarity sensitive : 9 ... 32 V DC
acc. to IEC 61568-2 and FISCO model
- Basic current : 14 mA
- Failure current (FDE) : 10 mA additional to basic current
- Transmission rate : 31.25 kBaud
- AI block for volume flow or mass flow
- Configurable with PDM DD
- Supports I&M- functions