GE RHM 20 Manuel utilisateur

RHM 20

The RHM 20 can measure ow rates up to 300 kg/

min (661 lb/min) with temperatures in excess of

350°C and pressures up to 392 bar. This model is

medium sized with true reliability for a versatile

solution, manufactured by GE’s Rheonik mass

owmeter experts.

Applications

• General control • Dosing • Mixing

• Batching • Injections • Filling

Features

• Suitable for pressure up to 392 bar

• Flow uncertainty down to 0.15%

• Density uncertainty down to 0.5%

• Repeatability better than 0.05%

• Unique torsion oscillator

• Typical measuring ranges from 3 to 300 kg/min

• Minimal ows as low as 2.25 kg/min

• Optimized solutions for batching operation

• Customization possible

• Hazardous Area Approvals (ATEX, CSA, ...)

Medium Sized Coriolis

Mass Flowmeter

Advantages

• Torsion oscillator design assures most stable and

basically drift free measurement and increased

signal to noise ratio

• Not sensitive to changes in pressure

• Longest life time and increased safety (low stress

in welds and increased wall thickness against

abrasion)

• No moving parts, practically no maintenance

• Removable connection manifold available

Measurement & Control

General Dimensions RHM 20

PM0/SM0 (parallel/serial manifold construction)

Type removable manifold with PTFE seals and thread connection

Process Connection Face to face length (L) Order Code

mm in

Standard Female Thread G 1" 136 5.35 G1

Female Thread 1" NPT 136 5.35 N1

Process Connection Face to face length (L) Order Code

mm in

Standard Flange DIN DN40/PN40 460 18.11 C1

Flange DIN DN40/PN100 500 19.69 C2

Flange ANSI 1 1/2" 150# RF/SF 460 18.11 F1

Flange ANSI 1 1/2" 300# RF/SF 460 18.11 F2

Flange ANSI 1 1/2" 600# RF/SF 500 19.69 F3

Optional JIS B 2220 RF 10k 40A (1 1/2") 460 18.11 J1

JIS B 2220 RF 20k 40A (1 1/2") 460 18.11 J2

A1 = 285 mm (11.22 in) B1 = 50 mm (1.97 in) Terminal box (without cable gland) 125 x 80 x 58 mm (4.92 x 3.15 x 2.28 in)

A2 = 300 mm (11.81 in) B2 = 70 mm (2.76 in) W = 0 mm for Temperature Range T1 and TA

H1 = 454 mm (17.87 in) W = 150 mm (5.91 in) for Temperature Range T2

H2 = 486 mm (19.11 in)

For weights and packaging dimensions please see last page of this section.

Type removable manifold with PTFE seals and ange connection

General Dimensions RHM 20

PF0 (parallel, sealless construction with ange connection))

Process Connection Face to face length (L) Order Code

mm in

Standard Flange DIN DN50/PN40 460 18.11 D1

Flange DIN DN50/PN100 500 19.69 D2

Flange ANSI 2" 150# RF/SF 460 18.11 A1

Flange ANSI 2" 300# RF/SF 460 18.11 A2

Flange ANSI 2" 600# RF/SF 500 19.69 A3

Flange ANSI 2" 1500# RF/SF 500 19.69 A5

Flange ANSI 2" 1500# RTJ 500 19.69 R2

Optional Flange DIN DN50/PN160 500 19.69 D3

Flange ANSI 2" 600# RTJ 500 19.69 R1

Flange ANSI 2" 2500# RF/SF 500 19.69 A8

Flange ANSI 2" 2500# RTJ 500 19.69 R4

Flange JIS RF 10k 50A (2") 460 18.11 K1

Type parallel, welded measuring loops without seals and ange connection

PFT (parallel, sealless construction with thread connection)

Process Connection Face to face length (L) Order Code

mm in

Standard Female Thread G 1" 400 15.75 G1

Female Thread 1" NPT 400 15.75 N1

Swagelok 1" Tube inlet

(SS-1610-1-16W)

560 22.05 W1

Type parallel, welded measuring loops without seals and thread connection

A1 = 285 mm (11.22 in) B1 = 50 mm (1.97 in) Terminal box (without cable gland) 125 x 80 x 58 mm (4.92 x 3.15 x 2.28 in)

A2 = 300 mm (11.81 in) B2 = 70 mm (2.76 in) W = 0 mm for Temperature Range T1 and TA

H1 = 454 mm (17.87 in) W = 150 mm (5.91 in) for Temperature Range T2, T3 and T4

H2 = 540 mm (21.26 in)

For weights and packaging dimensions please see last page of this section.

General Dimensions RHM 20

SF0 (serial, sealless construction without dead spaces) (*)

Type single path, welded measuring loops without seals and sanitary connection

Process Connection Face to face length (L) Order Code

mm in

Standard Sanitary 1" Triclamp,

DIN 32676

350 13.78 S1

Sanitary NW20, DIN 11851 350 13.78 S2

Type single path, welded measuring loops without seals and ange connection

Process Connection Face to face length (L) Order Code

mm in

Standard Flange DIN DN50/PN40 460 18.11 D1

Flange ANSI 2" 150# RF/SF 460 18.11 A1

Flange ANSI 2" 300# RF/SF 460 18.11 A2

A1 = 285 mm (11.22 in) B1 = 50 mm (1.97 in) Terminal box (without cable gland) 125 x 80 x 58 mm (4.92 x 3.15 x 2.28 in)

A2 = 300 mm (11.81 in) B2 = 70 mm (2.76 in) W = 0 mm for Temperature Range T1 and TA

H1 = 454 mm (17.87 in) V = 26 mm (1.02 in) W = 150 mm (5.91 in) for Temperature Range T2, T3 and T4

H2 = 540 mm (21.26 in)

(*) SF0 construction contains brazed joints (brazing material B-Ni82CrSiBFe-970/1000) which are not as corrosion resistant as the piping material 1.4571 (316Ti). Fully

welded joints for corrosive liquids and higher pressure ratings can be provided – please consult your local agent.

Weight in standard manifold construction with female threads: approx. 16 kg (35 lb)

Weight in standard sealless construction and 150# anges: approx. 23 kg (51 lb)

Shipping on pallet approx. 80 x 60 x 65 cm (31.5 x 23.6 x 25.6 in), gross weight with sealless construction, 150# standard anges and RHE 08 approx. 35 kg (77 lb)

Finish type of our ANSI anges corresponds to SF (AARH 125 up to 250 μin, Ra 3.2 up to 6.3 μm)

For customization with regard to face to face length and special ttings, please consult your local agent

Please note that larger diameter process connections are always possible

Pressure Rating RHM 20

The maximum pressure (pmax) of a sensor is determined by its weakest part. The weakest part can be the measuring

loops (pmax indicated below) or the construction type (pmax indicated in the Basic Order Code section, last page) or the

selected anges / ttings (for pmax please see respective standard).

pmax of P1 measuring loops, standard

M1 standard material - 1.4571 (316Ti)

OD x WT 20 x 1 mm (0.787 x 0.039 in)

bar °C psi °F

120 50 1740 122

110 120 1595 248

92 210 1334 410

77 350 1117 662

pmax of P1 measuring loops

M3 optional material - 2.4602 (Alloy C22)

OD x WT 19.1 x 1.25 mm (0.752 x 0.049 in)

bar °C psi °F

193 50 2799 122

171 120 2480 248

146 210 2118 410

121 350 1755 662

pmax of P2 measuring loops

M1 standard material - 1.4571 (316Ti)

OD x WT 20 x 2 mm (0.787 x 0.079 in)

bar °C psi °F

250 50 3626 122

225 120 3263 248

193 210 2799 410

162 350 2350 662

pmax of P2 measuring loops

M3 optional material - 2.4602 (Alloy C22)

OD x WT 19.1 x 1.65 mm (0.752 x 0.065 in)

bar °C psi °F

260 50 3771 122

232 120 3365 248

196 210 2843 410

163 350 2364 662

pmax of P4 measuring loops

M1 standard material - 1.4571 (316Ti)

OD x WT 20 x 3 mm (0.787 x 0.118 in)

bar °C psi °F

392 50 5685 122

345 120 5004 248

300 210 4351 410

250 350 3626 662

Performance RHM 20

Max Flow Rate Qmax and Qnom (*) = 300 kg/min (661 lb/min)

Standard Models

Flow Rate Uncertainty

kg/min lb/min in % of reading

300 661 0.20

150 331 0.20

50 110 0.20

15 33.1 0.20

613.2 0.50

Goldline Models (**) - selected sensors

Flow Rate Uncertainty

kg/min lb/min in % of reading

200 441 0.15

100 220 0.15

75 165 0.15

50 110 0.15

20 44.1 0.15

Low Flow Models (**) - selected sensors

Flow Rate Uncertainty

kg/min lb/min in % of reading

300 661 0.20

150 331 0.20

15.0 33.1 0.20

6.0 13.2 0.50

4.5 9.9 0.60

Repeatability

Better ± 0.1% of rate,

Goldline 0.05%

Density

Down to 0.5% uncertainty

Temperature

Better ± 1°C

Uncertainty % DP (bar)

Flow Rate kg/min

(*) Nominal ow Qnom refers to roughly 8 - 10 m/s

(26 - 33 ft/s) velocity in measuring loops for best

performance.

(**) Selected sensors are only available in combination

with temperature options T1, TA, standard material and

pressure range.

• Serial/single path versions oer the same accuracy at

half the ow (Qmax serial version = 150 kg/min).

• No relevant pressure eect due to torsional oscillation

and semi-circle (non-deforming) measurement

section.

• Uncertainty of reading (incl. zero drift) indications refer

to reference conditions H2O, 18-24°C (66 - 76°F), 1 - 3

bar (15 – 45 psi) and installation according to eld

manual.

• Pressure drop indications refer to H2O, with parallel

measuring loops type P1 and standard manifold block

connections.

• For calibration to customer range and / or with

improved uncertainty, please consult your local

agent.

General Specications RHM 20

Temperature Range

• NT Models from -20 to +120°C (-4 to +248°F)

• ET Models from -45 to +120°C (-49 to +248°F)

• ET2 Models from -45 to +210°C (-49 to +410°F)

• ET1 Models from -196 to +50°C (-320 to +122°F)

• HT Models from 0 to 350°C (+32 to +662°F)

(Heating for housing optional, please consult your local agent)

Electrical Connection

• Junction box Aluminium coated (standard). Junction box in

SS 316Ti optional

• Cable entry M25 x 1.5. Optional cable entries M20 x 1.5, 1/2”

NPT or 3/4” NPT

• Max cable length between RHM and RHE is 100m (330 ft).

200m (660 ft) only with factory approval

Material of Wetted Parts

• 1.4571 / SS 316 Ti / UNS S31635 (standard)

• 2.4602 / Alloy C22 / UNS N06022

• Tantalum

• Others on request

Sensor Enclosure/Housing

• Stainless Steel 1.4301 / SS 304, optional in 1.4571 / SS 316Ti.

Others on request

• Protection Class IP 65. Optional IP 66 / NEMA 4x

Approvals

• ATEX Ex II 1 G, EEx ia IIC T6-T1

• CSA USA-Canada, Class I, Div. 1, Groups A, B, C, D

• PED according to directive 97/23/EC: Art.3 (3) Sound

Engineering Practice (SEP), Module A1 or Module B + C1 –

depending on construction type and measured uid

• Others on request

Sensor Size

Temperature Rating

T1 NT from -20°C to +120°C (standard)

TA ET from -45°C to +120°C

T2 ET2 Extended Temperature Range from -45°C to +210°C

T3 ET1 Extended Temperature Range from -196°C to +50°C

T4 HT High Temperature Range from 0°C to +350°C

Pressure Range of Measuring Loops @ 120°C and M1 material

P1 pmax = 110 bar (standard)

P2 pmax = 225 bar

P4 pmax = 345 bar

Construction Type (pmax indications @120°C)

PM0 Parallel Measuring Loops with removable Manifold and PTFE Seals,

pmax = 270 bar with thread connection, 185 bar with ange connection

SM0 Serial Measuring Loops with removable Manifold and PTFE Seals, pmax = 130 bar

PF0 Parallel Measuring Loops Seal Less Version

SF0 Serial Measuring Loops Seal Less Version Sanitary, pmax = 42.9 bar

upon request, a fully welded version is available, pmax = 200 bar

PFT Parallel Measuring Loops Seal Less Version for Thread Connection, pmax = 210 bar

Material of Wetted Parts

M1 Measuring Loops and Manifold/Connection 1.4571 (316Ti) (standard)

M3 Measuring Loops and Connection Part 2.4602 (Alloy C22), Seal Less Construction only

M4 Measuring Loops and Connection Part Tantalum, PF0 Construction Type only

Process Connection

C1 Flange DIN DN40/PN40 Form C (EN 1092-1 Form B1)

C2 Flange DIN DN40/PN100 Form E (EN 1092-1 Form B2)

D1 Flange DIN DN50/PN40 Form C (EN 1092-1 Form B1)

D2 Flange DIN DN50/PN100 Form E (EN 1092-1 Form B2)

F1 Flange ANSI 1 ½” 150# RF/SF

F2 Flange ANSI 1 ½” 300# RF/SF

F3 Flange ANSI 1 ½” 600# RF/SF

A1 Flange ANSI 2” 150# RF/SF

A2 Flange ANSI 2” 300# RF/SF

A3 Flange ANSI 2” 600# RF/SF

A5 Flange ANSI 2” 1500# RF/SF

R2 Flange ANSI 2” 1500# RTJ

G1 Female Thread G 1”

N1 Female Thread 1” NPT

W1 Swagelok 1” Tube inlet (SS-1610-1-16W), standard material only

S1 Sanitary 1” Triclamp, DIN 32676, pmax = 17.2 bar @ 120°C

S2 Sanitary NW20, DIN 11851, pmax = 40 bar @ 120°C

Others on request

RHM20 - - - -

Basic Order Code RHM 20

920-499A

names mentioned in this document may be trademarks or registered trademarks of their respective companies, which are not aliated with GE.

gwww.ge-mcs.com

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