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Yokogawa RAMC23
Metal Short-stroke Rotameter - 3/4-inch (20mm)

  • Variable flow meter
  • Simple measurement principle
  • Uncomplicated design
  • Local indicator without additional power supply
  • Low maintenance
  • Suitable for continuous operation
  • Cost effective
  • High efficiency
  • High accuracy
  • Precise measurement at very low flow rates
  • Replaceable floats
  • Visual evaluation of measured substance possible
  • Minimal pressure possible
  • Special float shape for less dependence on viscosity at lower viscosities
  • Special application to troubled, opaque or aggressive mediums
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Yokogawa RAMC23 Shown

Product Information
Overview 921 KB PDF
Brochure 1.26 MB PDF
Specification 642 KB PDF
Manual 3 MB PDF
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Yokogawa RAMC23 Metal Short-stroke Rotameter. A float is guided concentrically to a special shaped conic metal tube. The position of this float is magnetically transmitted to the indicator. The short-tube Rotameter is used for measurement of flow rates of liquids and gases. Its special application is in troubled, opaque or aggressive mediums. The instrument is mounted in a vertical pipeline with flow direction upwards. The indicators are exchangeable without influence on the accuracy.

Specification RAMC23 Metal Short-stroke Rotameter
Measureable Flow Rates Water (20°C): 2.5 l/h min, 130 m3/h max,
Air (20°C 1 bar absolute): 4 l/h min, 8 m3/h max.
Tubes Tube and process connection one unit
Accuracy class
acc. VDE/VDI 3513 Bl. 2
4
max. Process pressure 160 bar without valve
100 bar with valve
max. Process temperature 150°C
Process connection Inner thread RP
Inner thread NPT
Cutting ring thread Nozzle
Flange acc. EN 1092-1 Form B1 or acc. ASME B 16.5
Materials Process connection: 1.4571 (AISI 316TI)
Fitting: Indicator housing 1.4301(AISI 304)
Tube: 1.4571 (AISI 316TI)
Approx. installation length
Process connections
125 mm with inner thread vertical or horizontal
Power supply 2 wire ; 13.5 - 30 VDC
Output signal 4-20mA

Model Numbers
Specify the Model Number by choosing one code from each section. Please call to order.

Model
RAMC23 Rotameter Size 3/4-inch (20mm)
Process Connection
-A1 3/4 inch ANSI 150# RF 316L
-A2 3/4 inch ANSI 300# RF 316L
-A3 3/4 inch ANSI 300# RF 316L
-D4 Flange EN PN40
-T6 Thread female NPT:PN40
Material Wetted Parts
PF Teflon lining
SS Stainless steel
Measuring Tube
-43 Cone Size 43
-44 Cone Size 44
-47 Cone Size 47
-51 Cone Size 51
-52 Cone Size 52
-53 Cone Size 53
-54 Cone Size 54
-57 Cone Size 57
-61 Cone Size 61
-62 Cone Size 62
Float Body
A1 Float Size A1
L1 Float Size L1
M1 Float Size M1
M2 Float Size M2
S0 Float Size S0
S1 Float Size S1
V1 Float Size V1
Indicator/Transmitter
-E90 Electronic transmitter with round stainless steel housing
-E91 Electronic transmitter with round aluminum housing
-G90 Electronic transmitter (Profibus) with stainless steel housing (only with output 429)
-H90 Electronic transmitter (HART) with stainless steel housing (Hart units must choose power supply 424)
-H91 Electronic transmitter (HART) with round aluminum housing (Hart units must choose power supply 424)
-T90 Local indicator with stainless steel housing
-T91 Local indicator with round aluminum housing
Power Supply/Output
144 115 V AC; 4-wire, 4-20mA (not with -T90 or -T91)
424 24 V DC; 2 wire, 4-20mA (not with -T90 or -T91)
429 9-32V DC 2 wire, Profibus (only with indicator G; not with limit switches)
NNN Without power supply (use with /T90 and /T91 only)
Electrical Connection Options
/A5 ASME 1/2-inch NPT female
/A13 ISO M20 x 1.5 female
Options
/A12 US engineering units (not with -T90 or -T91)
/A14 Housing color green (-H91 or -T91)
/A16 Indicator on 95mm extension
/B1 Stainless steel tagplate wired on
/B8 Customer specific labeling
/BD Dual scale
/BG Customer specific notes on scale
/KS1 ATEX intrinsically safe "ia" (not available with 144 power supply, for indicator T only with limit switches)
/KN1 ATEX category 3G "nL" / 3D (not available with 144 power supply, for indicator T only with limit switches)
/FS1 FM intrinsically safe approval for electronic transmitter, CSA intrinsic safe approval for limit switches (US and CAN)(not available with 144 power supply, for indicator T only with limit switches)
/KF1 ATEX flame proof "d" / dust proof (not available with 144 power supply, only for housing 91)
/H1 Degreasing certificate
/P2 Certificate of Compliance
/P3 Test Report 2.2, EN 10204
/P6 Material Certificate per EN 10204
/PM3 PAMI test (3 test point)
/QR1 Russian GOST Certificate
/QR2 Kasachian GOST Certificate
/PP Hydrostatic Pressure Test
/SD Float Damping system (gas applications with stainless steel wetted parts only)
/IE1 English Instruction Manual - Hard Copy
Limit Switches Options
/K1 MIN-contact (requires power supply, not available with 144)
/K2 MAX-contact (requires power supply, not available with 144)
/K3 MIN-MAX,MIN-MIN, MAX-MAX contact (requires power supply, not available with 144)
/W1A Power Supply, KFAG-SR2 - Ex1-W/115 vac 1 ch
/W1B Power supply, KFA6-SR2-Ex2-W / 115VAC 2 ch.
/W4A Power supply, KFD2-SR2-Ex1-W / 24 V DC 1 ch.
/W4B Power supply, KFD2-SR2-Ex2-W / 24 V DC 2 ch.
 
Ordering Information
Model  Description Buy Online Price
RAMC23 Yokogawa RAMC23 Metal Short-stroke Rotameter Please Call
Included Items
 
  • 1 - User Manual
Included