Yokogawa Rotameter Flow Meter, RAMC
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RAMC Rotameter Flow Meter

Brand: Yokogawa Electric Corporation
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Yokogawa Rotameter Flow Meter, RAMC
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.
Features
  • Different process connections like flanges according EN and ASME
  • All wetted parts in stainless steel or PTFE
  • Maximum flow 0.025 to 130 m³/hr water resp. 0.75 to 1400 m³/hr air (20° C / 1.013 bar abs)
  • Measuring accuracy according to directive VDI/VDE 3513 sheet 2 (qG = 50%)
  • Float damping to avoid float bouncing with gas applications
  • Optional heat tracing (with steam or fluid heat carrier)
  • Indicator in stainless steel, Aluminum, protection class IP 66 / IP 67
  • Local indicator without additional power supply
  • Microprocessor controlled transmitter with 24 V, 115 V or 230 V power supply
  • Intrinsically safe version (Ex-i): ATEX, IECEx, FM, CSA, NEPSI, PESO, KOSHA, EAC, INMETRO
  • Flame proof version (Ex-d): ATEX, IECEx, NEPSI, PESO, KOSHA, EAC, TS
  • Dust explosion proof: ATEX, IECEx, NEPSI, PESO, KOSHA
  • Ex for non-electrical RAMC: ATEX, EAC
  • Suitable for SIL application, FMEDA report available
  • Limit switches, also available as “Fail Safe” version
Electronic transmitter as standard with local-controlling display with the following features:
  • Flow indication (Totalize, Actual, Percent)
  • Indication of different volume and mass flow units
  • Second (manual) calibration storing
  • Patented float blocking indication function
  • Signal output damping
  • Error message indication
  • Temperature measurement in the electronic transmitter
  • HART5 communication
  • Profibus PA communication

View Details

Specifications

Brand

Accuracy

  • ± 5° C (± 9° F) - Transmitter

Approvals & Certifications

  • ATEX Intrinsically Safe (Ex-i), Flameproof (Ex-d), Dust Explosion-proof, Ex for Non-Electrical
  • CRN
  • EAC Intrinsically Safe (Ex-i), Flameproof (Ex-d), Dust Explosion-proof, Ex for Non-Electrical
  • EMC EN 61326-1, Class A, EN 61326-2-3
  • FM Intrinsically Safe (Ex-i)
  • GOST
  • IEC Ex Intrinsically Safe (Ex-i), Flameproof (Ex-d), Dust Explosion-proof
  • INMETRO Intrinsically Safe (Ex-i)
  • KC
  • KOSHA Intrinsically Safe (Ex-i), Flameproof (Ex-d), Dust Explosion-proof
  • NEPSI Intrinsically Safe (Ex-i), Flameproof (Ex-d), Dust Explosion-proof
  • PED 97/23/EG
  • PESO Intrinsically Safe (Ex-i), Flameproof (Ex-d), Dust Explosion-proof
  • TS Flameproof (Ex-d)

Approvals & Certifications

  • Compliance with the Order According EN 10204: 2004-2.1 & Test Report According EN 10204: 2004 -2.2
  • Dye Penetration Testing According DIN EN ISO 3452-1
  • Flow Table Test for Conversion
  • Material Certificate
  • Pattern Approval Certificate for Measuring Instruments
  • Pressure Test Report Measuring System
  • Pure Water
  • SIL 1, SIL 2
  • Welding Test Procedures According to ASME IV
  • X-Ray Test According ASME V

BSP Connection

  • G 1” Female
  • G 1/2” Female
  • G 1-1/2” Female
  • G 1-1/4” Female
  • G 2-1/2” Female
  • G 3/4” Female
  • 1” BSPP Female
  • 1/2” BSPP Female
  • 2” BSPP Female
  • 2-1/2” BSPP Female
  • 3/4” BSPP Female

Channels

  • 1-Channel

Communication

  • Baud Rate: 31.25 K
  • HART
  • PROFIBUS PA

Current

  • 10 mA - Failure Current for PROFIBUS PA
  • 14 mA - Basic Current for PROFIBUS PA

Damping Adjustment

  • 1 second

Diameter

  • 0.23” to 0.35” (6 to 9 mm) - Cable

Display

  • 7-Segment LCD Display Character Height 0.23” (6 mm)
  • 8-Digit LCD

Electrical Connectors

  • 1/2” NPT Female (ASME ) - Thread for Cable Gland
  • 2-Wire
  • 3-Wire
  • 4-Wire
  • M16 x 1.5 - for Typical 90
  • M20 x 1.5 - for Typical 91

Electrical Rating

  • 2 A at 250 Vac, Max.

Enclosure Finish

  • Epoxy Coated (For Typical Round Yellow), Cover Green & Bottom Green (RAL 6001)
  • High Anti-Corrosion Coating (3 Layers) for Typical Round Blanc, Cover Yellow RAL 1021, Bottom White RAL 9001

Enclosure, Body Material

  • 304 Stainless Steel, 1.4301 - Indicator Housing
  • 316L Stainless Steel, 1.4401 - Indicator Housing
  • Painted Aluminum Casting According to EN 13195 AC 44200 Material (Typical: Round Yellow) Each with Safety-Glass Window - Indicator

Environmental Protection

  • Dust Ignition-Proof
  • Flameproof
  • Intrinsically Safe Class I, Div. 1, Groups A, B, C, D T6, Class I, Zone 0, AEx ia IIC T6
  • IP66
  • IP67
  • NEMA 4
  • NEMA 4X
  • NEMA 6 (Not for Flameproof Housing)
  • Non-Incendive

Flange Size - 1-1/2” (DN 40)

  • 1-1/2” (DN 40) - 150# ASME
  • 1-1/2” (DN 40) - 300# ASME
  • 1-1/2” (DN 40) - 600# ASME
  • 1-1/2” (DN 40) - PN 10
  • 1-1/2” (DN 40) - PN 100
  • 1-1/2” (DN 40) - PN 40

Flange Size - 1-1/4” (DN 32)

  • 1-1/4” (DN 32) - 150# ASME
  • 1-1/4” (DN 32) - 300# ASME
  • 1-1/4” (DN 32) - 600# ASME
  • 1-1/4” (DN 32) - PN 100
  • 1-1/4” (DN 40) - PN 40

Flange Size - 1” (DN 25)

  • 1” (DN 25) - 150# ASME
  • 1” (DN 25) - 300# ASME
  • 1” (DN 25) - 600# ASME
  • 1” (DN 25) - PN 10
  • 1” (DN 25) - PN 100
  • 1” (DN 25) - PN 40

Flange Size - 1/2” (DN 15)

  • 1/2” (DN 15) - 150# ASME
  • 1/2” (DN 15) - 300# ASME
  • 1/2” (DN 15) - 600# ASME
  • 1/2” (DN 15) - PN 100
  • 1/2” (DN 15) - PN 40

Flange Size - 2-1/2” (DN 65)

  • 2-1/2” (DN 65) - 150# ASME
  • 2-1/2” (DN 65) - 300# ASME
  • 2-1/2” (DN 65) - 600# ASME
  • 2-1/2” (DN 65) - PN 40
  • 2-1/2” (DN 65) - PN 63

Flange Size - 2” (DN 50)

  • 2” (DN 50) - 150# ASME
  • 2” (DN 50) - 300# ASME
  • 2” (DN 50) - 600# ASME
  • 2” (DN 50) - PN 100
  • 2” (DN 50) - PN 40
  • 2” (DN 50) - PN 63

Flange Size - 3-1/2” (DN 90)

  • 3-1/2” (DN 90) - 150# ASME
  • 3-1/2” (DN 90) - 300# ASME

Flange Size - 3” (DN 80)

  • 3 (DN 80) - 600# ASME
  • 3” (DN 80) - 150# ASME
  • 3” (DN 80) - 300# ASME
  • 3” (DN 80) - PN 40
  • 3” (DN 80) - PN 63

Flange Size - 3/4” (DN 20)

  • 3/4” (DN 20) - 150# ASME
  • 3/4” (DN 20) - 300# ASME
  • 3/4” (DN 20) - 600# ASME
  • 3/4” (DN 20) - PN 100
  • 3/4” (DN 20) - PN 40

Flange Size - 4” (DN 100)

  • 4” (DN 100) - 150# ASME
  • 4” (DN 100) - 300# ASME
  • 4” (DN 100) - PN 16
  • 4” (DN 100) - PN 40

Flange Size - 5” (DN 125)

  • 5” (DN 125) - 150# ASME
  • 5” (DN 125) - 300# ASME
  • 5” (DN 125) - PN 16

Flange Size - 6” (DN 150)

  • 6” (DN 150) - 150# ASME
  • 6” (DN 150) - 300# ASME
  • 6” (DN 150) - PN 16

Flange Type

  • Raised Face (RF)

Flow Rate

  • 0.025 to 130 m³/hour (0.11 to 572 gpm) - Water & Liquids (Metal Tube)
  • 0.1 to 63 m³/hour (0.45 to 280 gpm) - Water & Liquids (Tubes with PTFE Lining)
  • 0.75 to 1,400 m³/hour (0.44 to 800 scfm) - Air & Gases (Metal Tube)
  • 3.5 to 850 m³/hour (2 to 500 scfm) - Air & Gases (Tubes with PTFE Lining)

Gasket Material

  • NBR Binder / Aramide Fibres Gasket - for Rp or NPT Removable Female Thread Process Connection

Hysteresis

  • ± 0.1 % of Full Scale

Linearity

  • ± 0.2 % of Full Scale

Load

  • ≤ 500 ohms - 4-Wire Units (Electronic Transmitter)
  • 250 to 500 ohms - HART Version (Electronic Transmitter)
  • 700 ohms, Max.

Materials of Construction

  • Removable Plate with Scale: Aluminum
  • Tag Plate: 316L Stainless Steel

Measurement Accuracy

  • 1.6 % According to Directive VDI/VDE 3513 - DN 15-DN 100 (Stainless Steel)
  • 2.5 % According to Directive VDI/VDE 3513 - DN 125-DN 150 (Stainless Steel), DN 15-DN 100 (PTFE)

Media

  • Gas
  • Liquids
  • Steam

Mounting Position

  • Vertical

NPT Connection

  • 1” NPT Female
  • 1/2” NPT Female
  • 1-1/2” NPT Female
  • 1-1/4” NPT Female
  • 2” NPT Female
  • 2-1/2” NPT Female
  • 3/4” NPT Female

Output

  • ≤ 1 mA - Output Signal for Limit Switches
  • ≤ 3.6 mA (According to NE43) - Output Signal in Case of Failure for Electronic Transmitter
  • ≥ 3 mA - Output Signal for Limit Switches
  • 0-20 mA: 2/3-Wire Units
  • 21.5 mA - Max.
  • 4-20 mA: 2/3/4-Wire Units

Power Supply

  • 115 Vac ± 10 %, 45-65 Hz - Limit Switches
  • 115 Vac 10 % / -15 %, 50/60 Hz, Fuse 0.125 A, Time Lag, (5 x 20) mm - 4-Wire Units with Galvanic Isolation (Electronic Transmitter)
  • 14-30 Vdc (Electronic Transmitter)
  • 230 Vac ± 10 %, 45-65 Hz - Limit Switches
  • 230 Vac 10 % / -15 %, 50/60 Hz, Fuse 0.063 A, Time Lag, (5x20) mm - 4-Wire Units with Galvanic Isolation (Electronic Transmitter)
  • 24 Vdc ± 25 % - Limit Switches

Power Supply Effect

  • ± 0.1 % of Full Scale - Influence of Power Supply

Pressure Range

  • psi: 0 to 10,150 (kPa: 0 to 70,000, bar: 0 to 700) - Process Pressure

Process Connection Material

  • 316 Stainless Steel
  • 316L Stainless Steel

Process Temperature

  • -196° to 370° C (-320° to 698° F) - Medium Wetted Parts Made of Stainless Steel
  • -80° to 130° C (-112° to 266° F) - Medium Wetted Parts Made of PTFE

Ratio

  • 10:1 - Measuring Range Ratio

Relay Output

  • 1 or 2 Potential Free Changeover Contacts

Repeatability

  • ± 0.1 % of Full Scale

Response Time

  • About 1.5 seconds

Stability

  • ± 0.2 %/Year

Storage Temperature

  • -40° to 110° C (-40° to 230° F) - Storage & Transportation Temperature for Local Indicator
  • -40° to 70° C (-40° to 158° F) - Storage & Transportation Temperature for Electronic Transmitter

Supply Voltage

  • 20-250 Vdc/ac, 50/60 Hz
  • 8 Vdc - Nominal Voltage for Limit Switches

Switch Type

  • Inductive Proximity Switch SC3.5-N0 According DIN EN 60947-5-6” Standard Version, SJ3.5-SN, SJ3.5-S1N According DIN EN 60947-5-6 (NAMUR) in Fail-safe Version

Temperature Coefficient

  • ± 0.5 % / 10 K of Full Scale - Output Signal

Temperature Range

  • -25° to 70° C (-13° to 158° F) - Internal Transmitter Temperature

Tri-Clamp Connection

  • 1” Tri-Clamp
  • 1-1/2” Tri-Clamp
  • 2” Tri-Clamp
  • 3” Tri-Clamp
  • 4” Tri-Clamp

Wetted Materials

  • 316 Stainless Steel
  • PTFE

Documentation

Data Sheets

Product Manuals

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