Yokogawa RAGK Data sheet

General Specications

Model RAGK Small Glass ROTAMETER

GS 01R01B07-00E-E

Rotameter RAGK is designed for the measurement of clean liquids and gases. The conical glass metering tube has a free rotating oat. The Rotameter is mounted in a vertical pipeline with ow direction upwards. The ow is indicated by the top of the oat and can be read from a scale on the measuring tube or from an attached scale.

FEATURES

• Large selection of measuring ranges

• High repeatability by a free rotating oat even at low ow rates

• Low pressure loss

• Visual check of the medium

• Non-powered local indication

• Large selection of scales

• Optional built-in regulation valve

• Optional limit switches

Typical Applications

• Transparent liquids

• Low viscous liquids

• Gases

RAGK41 with K-tube without valve with valve

Contents

Features page 1

Standard Specications page 2

Model Specications page 6

Options

Dimensions and weights page 8

Rota Yokogawa GmbH & Co. KG Rheinstr. 8 D-79664 Wehr Germany

page 7

RAGK41 with M-tube without valve with valve

GS 01R01B07-00E-E

15th edition, April 2020 (RYG)

0 %

5 %

10 %

15 %

20 %

25 %

30 %

35 %

40 %

45 %

0 %20 %40 %60 %80 %100 %

Error

Flow

Accuracy specification

2.5 %, qG=50 %

4 %, qG=50 %

6 %, qG=50 %

4 %, qG=100 %

ROTA YOKOGAWA

S/N: D1L123456 Manufactured: 2019.08 PS: 16 bar TS: -10°C/+130°C RAGK

FIC 1102

STANDARD SPECIFICATIONS

RoHS Directive 2011/65/EU:

RoHS conform according to EN 50581

Measurable ow rates:

• Water, 20 °C (68 °F):

0.002 l/h to 630 l/h (0.0005 gph to 166 gph)

• Air, 20 °C (68 °F), 1 bar abs.:

0.2 l/h to 6300 l/h (0.05 gph to 1664 gph)

The measureable ow rates are depending from density and viscosity of the uid. To nd the uid specic measuring range please use the Yokogawa FlowCongurator: www.FlowCongurator.com.

Measuring range: ≈10:1 Measuring tubes: K6xx; M6xx; K7xx; M7xx; M3xx

K, M: length code 6, 7, 3: diameter code xx: cone code

Table 1: Measuring accuracy

Glass

metering tube

K631 - K743 75 mm 4 % (for ball 6 %) -----

M613 - M622 M624 - M747 M352 - M357

For detailed accuracy calculation please use the Yokogawa FlowCongurator: www.FlowCongurator.com.

The accuracy is given under calibration conditions. For liquid service it has to be taken into account, that the indication is viscosity dependent and the accuracy can only be kept if the temperature is constant.

Calibration conditions:

Air, 18 °C to 25 °C (64.4 °F to 77 °F) atmospheric pressure

Length Measuring accuracy

150 mm 150 mm 150 mm

acc. VDI/VDE 3513

sheet 2 (qG=50 %)

-----

2.5 %

Measuring accuracy

acc. VDI/VDE 3513 sheet 2 (qG=100 %)

4 %

-----

Process and ambient temperature:

• Head material stainless steel(SS): -20 °C to 130 °C (-4 °F to 266 °F)

• Head material polypropylene(PP): 0 °C to 80 °C (32 °F to 176 °F)

• Scale G, N, D, F: max. 100 °C (212 °F)

• Scale with option /IB: max. 130 °C (266 °F)

• With option /GR or /GM: 0 °C to 65 °C (32 °F to 149 °F)

• With option /NBR: -20 °C to 100 °C (-4 °F to 212 °F)

• With option /R1 or /R3: -20 °C to 80 °C (-4 °F to 176 °F)

Material wetted parts:

SS is 316L (1.4404), 316 Ti (1.4571) or 1.4408

• Process connection:

• female thread: PP; SS The threads are directly machined in the head.

• Cutting ring: SS

• Nozzle for hose connection: SS

• Swagelok® connection: SS

• Heads: PP; SS

• O-rings:

• standard: FPM (Viton)

• option /NBR: NBR (Perbunan)

• option /Kal: FFKM (Kalrez)

• Glass: Borosilicate 3.1

• Floats: SS, titan, glass ball, MU-metal, PVDF, aluminum oxide, SS ball, PP, PVDF

• Valve: SS spindle, PTFE spindle seal, RAGK41 with silver seat, RAGK42 with PTFE seat Vales are plug -in valves

• Float stopper:

• standard: PTFE

• option /S1: SS

• Protection cover: Polycarbonate

• Valve knob: Polyamide Installation length:

• with K-tubes: 90 mm (3.54")

• with M –tubes: 165 mm (6.5")

• RAGK42: 175 mm (6.89") Pressure loss: 2 mbar to 18 mbar at the oat (0.029 psi to 0.261psi) The pressure loss at the oat is given by the FlowCongurator: www.FlowCongurator.com. Valves will create additional pressure loss.

Weight: see table 4 Attached scale:

Made from hard plastic material with milled letters black in white, for high visibility. Limit switches are not possible with attached scale.

Marking:

Fig. 1 Accuracy specication overview

GS 01R01B07-00E-E 15th edition, April 01, 2020-00

Fig. 2: Example of name plate

050100 150200 250

-4

146

196

246

-20

100

120

140

024681012141618

Pressure in psi

Ambient or process

temperature in °F

Ambient or process

temperature in °C

Pressure in barg

Temperature/pressure specification

PP with valve

SS with or w/o valve, with option /IB

PP without valve

APPROVALS IN EAEU AND CIS COUNTRIES

Eurasian Conformity (EAC)

RAGK with options /GR complies to applicable Technical Regulations valid in EAEU countries Russia, Belarus, Kazakhstan, Armenia and Kyrgyzstan.

• TR CU 004

• TR CU 020

Pattern Approval certicate of Measuring Instruments

RAGK has “Pattern Approval Certicate of Measuring Instruments” and is registered as a measuring instrument in Russia. Option /QR: Primary verication approval with technical passport For export to other CIS countries please contact your Yokogawa representative.

Fig.3: Temperature/pressure specication

Further temperature restrictions are applicable in case of option /GM (limit switches), option /NBR and option /R1 and /R3.

Table 2: Kvs and Cvs value of the valves

Cone 13 to 21 22 to 41 42 to 47 52 to 57

Kvs 0.024 m3/h 0.06 m3/h 0.24 m3/h 1.125 m3/h

0.028 gpm 0.07 gpm 0.28 gpm 1.316 gpm

GS 01R01B07-00E-E 15th edition, April 01, 2020-00

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