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RAGK Mini Rotameter Flow Meter

Brand: Yokogawa Electric Corporation

The RAGK Short Rotameter measures liquids and gases, designed with a conical glass metering tube that has a free rotating float. 

The flow is indicated by the top of the float and can be read from the standard scale on the metering tube or from a connected scale.

Measurable Flow Rate:
  • Water = 0.002 l/h to 600 l/h
  • Air = 0.2 l/h to 6300 l/h
Meets High Safety Standards
The RAGK’s tube is fixed between two square formed heads and sealed with o-ring gaskets made of Buna or Viton, providing a higher level of safety. Its stainless steel rear wall stabilizes the construction, and a plastic cover protects the rotameter.
Features
  • Two different tube lengths
  • Needle valves direct assembled in the head of the inlet or the outlet
  • Inductive ring sensors (GR) as limit switches available
  • Magnetic contacts (Reed sensors) for M3-tubes
  • Inlet and outlet flow controller available

Specifications

Accuracy

  • ± 2.5 % of Full Scale - Standard Flow
  • ± 4 % of Full Scale
  • ± 6 % of Full Scale

Approvals & Certifications

  • ATEX: Explosion-proof, Intrinsic Safe [EEx ia] II C According to PTB 00-ATEX-2081, PTB 00-ATEX-2081
  • CE 0344
  • EMC: DIN EN 61000-4-2, DIN EN 61000-4-3, DIN EN 61000-4-4, DIN EN 61000-4-6 & DIN EN 55011
  • Ex II 2 G

Approvals & Certifications

  • Certificate of Compliance with the Order According to EN 10204: 2004- 2.1
  • Flow Table for Recalculation
  • Pressure Test Report for Measuring System

BSP Connection

  • 1/4" BSPP Female
  • 1/8" BSPP Female

Consumption

  • 2.2 mA According DIN EN 60947-5-6 (NAMUR) - Float Above Ring Sensor

Diameter

  • Tube Diameter: 0.39" (10 mm)
  • Tube Diameter: 0.67" (17 mm)
  • Tube Diameter: 1.10" (28 mm)

Differential Pressure

  • > psi: 5.8 (kPa: 40, Mbar: 400) - Controller

Electrical Connectors

  • 0.4 mm², 2 m Long
  • 2 x 0.14 mm² with Shield
  • LIYY 2 x 0.34 mm², 1 m Long - Reed Contact

Electrical Contacts

  • Bistable Reed Contact
  • Changeover Contact

Electrical Rating

  • 230 V / 0.6 A / 12 W/VA - Reed Contact with Bistable
  • 250 Vac / 4 A / 500 VA, Max.

Enclosure, Body Material

  • Chromium Nickel-Steel - Controller, Float
  • Polystyrene - Reed Contact

Environmental Protection

  • Explosion-proof: EX Ia IIC 2 G T6, PTB 03-ATEX-2111
  • Intrinsically Safe
  • IP65
  • IP67

Flow Rate

  • 0.002 to 630 L/hr to Water (20° C)
  • 0.2 to 6,300 L/hr to Air (20° C, 1 bar Absolute)
  • 100 L/hr, Max.
  • 3,000 L/hr, Max.

Gasket Material

  • Buna-N
  • PTFE
  • Viton

Length

  • Tube Length Typical: 150 mm (5.90")
  • Tube Length Typical: 75 mm (2.95")

Materials of Construction

  • Corundum - Float Material
  • Glass Ball - Float Material
  • MuMetal - Float Material
  • PTFE - Controller (Membrane)
  • PVDF - Limit Switch & Float Material
  • Titanium - Float Material

Maximum System Pressure

  • psi: 232.1 (kPa: 1,600, bar: 16)

Mounting

  • Tapped Holes

NPT Connection

  • 1/4" NPT
  • 1/8" NPT
  • 3/8" NPT

O-Ring Material

  • Viton

Power Supply

  • 115 Vac
  • 230 Vac
  • 24 Vdc
  • 4.5 - 15 Vdc

Process Connection Material

  • 316L Stainless Steel - Cutting Ring, Nozzle, Swagelok Connection, Inner Thread, Holder, Float & Material of Fitting
  • Polypropylene (PP) - Inner Thread, Holder, Float & Material of Fitting
  • Steel - Cutting Ring, Nozzle

Relay Output

  • 1 or 2 Potential Free Changeover Contacts

Seat / Seal Material

  • Valve Seat: PTFE
  • Valve Seat: Silver

Sensor, Probe Diameter

  • 0.06" to 0.61" (1.6 to 15.7 mm)

Sensor, Probe Style

  • Float

Spring Material

  • Chromium Nickel-Steel - Controller

Switch Type

  • Bistable Inductive Ring Sensor

Temperature Range

  • -10° to 70° C (14° to 158° F) - Reed Contact with Bistable
  • 100° C (212° F) - Max.
  • 130° C (266° F) - Max.
  • -25° to 65° C (-13° to 149° F) - Bistable Inductive Ring Sensor
  • 80° C (176° F) - Max.

Documentation

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