The RHM 15 can measure ow rates up to 200 kg/
min (440 lb/min) with temperatures in excess of
350°C and pressures up to 540 bar. This model
is truly a reliable solution, manufactured by GE’s
Rheonik mass owmeter experts.
Applications
Used in industry for ow measurement applications
requiring high mass ow accuracy.
• General control • Dosing • Mixing
• Batching • Injections • Filling
Features
• Suitable for pressure up to 540 bar
• Flow uncertainty down to 0.12%
• Density uncertainty down to 0.5%
• Repeatability better than 0.05%
• Unique torsion oscillator
• Typical measuring ranges from 2 to 200 kg/min
• Minimal ows as low as 1 kg/min
• Optimized solutions for batching operation
• Customization possible
• Hazardous Area Approvals (ATEX, CSA, ...)
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)
Type removable manifold with PTFE seals and thread connection
Process ConnectionFace to face length (L) Order Code
mmin
StandardFemale Thread G 3/4" 1204.72G1
Female Thread 3/4" NPT1204.72N1
Type removable manifold with PTFE seals and ange connection
(only with PM0, SM0 manifold)
Process ConnectionFace to face length (L) Order Code
mmin
StandardFlange DIN DN25/PN4040015.75D1
Flange DIN DN25/PN100 40015.75D2
Flange ANSI 1" 150# RF/SF40015.75A1
Flange ANSI 1" 300# RF/SF40015.75A2
Flange ANSI 1'' 600# RF/SF40015.75A3
Flange ANSI 1" 1500# RTJ45017.72R3
OptionalFlange DIN DN25/PN16040015.75D4
Flange ANSI 1" 1500# RF/SF45017.72A6
Flange JIS RF 10k 25A (1")40015.75J1
Flange JIS RF 20k 25A (1")40015.75J2
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 = 481 mm (18.94 in)
For weights and packaging dimensions please see last page of this section.
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Page 3
General Dimensions RHM 15
PF0 (parallel, sealless construction with ange connection)
Type parallel, welded measuring loops without seals and ange connection
Process ConnectionFace to face length (L) Order
Code
mmin
StandardFlange DIN DN40/PN4040015.75C1
Flange DIN DN40/PN10040015.75C2
Flange ANSI 1 1/2" 150# RF/SF40015.75F1
Flange ANSI 1 1/2" 300# RF/SF40015.75F2
Flange ANSI 1 1/2'' 600# RF/SF40015.75F3
Flange ANSI 1 1/2" 1500# RF/SF40015.75F5
Flange ANSI 1 1/2" 1500# RTJ40015.75R4
Flange ANSI 1 1/2" 2500# RF/SF45017.72F4
Flange ANSI 1 1/2" 2500# RTJ45017.72R5
OptionalFlange DIN DN40/PN16040015.75C4
Flange ANSI 2" 1500# RTJ50019.69R1
Grayloc Hub 1 1/2" GR1140015.75H6
Grayloc Hub 2" GR1140015.75H8
Grayloc Hub 2" GR1440015.75H3
Flange JIS RF 10k 40A (1 1/2")40015.75J1
Flange JIS RF 20k 40A (1 1/2")40015.75J2
PFT (parallel sealless construction with thread connection)
Process ConnectionFace to face length (L) Order Code
mmin
StandardFemale Thread G 3/4" 40015.75G1
Female Thread 3/4" NPT40015.75N1
Swagelok ¾" Tube inlet (SS1210-1-12W)
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)
47018.50W1
For weights and packaging dimensions please see last page of this section.
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General Dimensions RHM 15
SF0 (serial, sealless construction without dead spaces)
Type single path, welded measuring loops without seals and sanitary connection
Process ConnectionFace to face length (L) Order Code
mmin
StandardSanitary 1" Triclamp,
DIN 32676
Sanitary NW20, DIN 1185135013.78S2
Process ConnectionFace to face length (L) Order Code
StandardFlange DIN DN40/PN4040015.75C1
Flange ANSI 1 1/2" 150#
RF/SF
Flange ANSI 1 1/2" 300#
RF/SF
35013.78S0
mmin
40015.75F1
40015.75F2
Type single path, welded measuring loops without seals and ange 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) 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. 14 kg (31 lb)
Weight in standard sealless construction and 150# anges: approx. 16 kg (35 lb)
Shipping on pallet approx. 70 x 40 x 55 cm (27.6 x 15.7 x 21.7 in), gross weight with sealless construction, 150# standard anges and RHE 08 approx. 27 kg (60 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
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Pressure Rating RHM 15
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 15 x 1 mm (0.59 x 0.039 in)
bar°Cpsi°F
165502393122
1501202176248
1272101842410
1073501552662
pmax of P2 measuring loops
M1 standard material - 1.4571 (316Ti)
OD x WT 15 x 2 mm (0.59 x 0.079 in)
bar°Cpsi°F
352505105122
3001204351248
2502103626410
2103503046662
pmax of P3 measuring loops
M1 standard material - 1.4571 (316Ti)
OD x WT 15 x 3 mm (0.59 x 0.118 in)
bar°Cpsi°F
540507832122
4501206527248
3502105076410
3003504351662
pmax of P1 measuring loops
M3 optional material - 2.4602 (Alloy C22)
OD x WT 15 x 1 mm (0.59 x 0.039 in)
bar°Cpsi°F
228503307122
2011202915248
1722102495410
1433502074662
pmax of P2 measuring loops
M3 optional material - 2.4602 (Alloy C22)
OD x WT 15 x 2.2 mm (0.59 x 0.087 in)
(*) 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.
Flow Rate kg/min
Uncertainty % DP (bar)
Flow Rate kg/min
• Serial/single path versions oer the same accuracy at
half the ow (Qmax serial version = 100 kg/min).
• No relevant pressure eect due to torsional oscillation
and semi-circle (non-deforming) measurement
section.
• Uncertainty of reading (incl. zero drift) indications refer
to reference conditions H
O, 18-24°C (66 - 76°F), 1 - 3
2
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 factory.
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RHM 15 Specications
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
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Basic Order Code RHM 15
Sensor Size
Temperature RatingT1 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
PM0 Parallel Measuring Loops with removable Manifold and PTFE Seals, pmax = 230 bar with thread connection, 214 bar with ange connection
SM0 Serial Measuring Loops with removable Manifold and PTFE Seals,
pmax = 230 bar with thread connection, 214 bar with ange connection
PH0 Parallel Measuring Loops with High Pressure Manifold and PTFE Seals, pmax = 420 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 = 325 bar
PFT Parallel Measuring Loops Seal Less Version for Thread Connection, pmax = 250 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
D1 Flange DIN DN25/PN40 Form C (EN 1092-1 Form B1)
D2 Flange DIN DN25/PN100 Form E (EN 1092-1 Form B2)
C1 Flange DIN DN40/PN40 Form C (EN 1092-1 Form B1)
C2 Flange DIN DN40/PN100 Form E (EN 1092-1 Form B2)
A1 Flange ANSI 1” 150# RF/SF
A2 Flange ANSI 1” 300# RF/SF
A3 Flange ANSI 1” 600# RF/SF
R3 Flange ANSI 1” 1500# RTJ
F1 Flange ANSI 1 ½” 150# RF/SF
F2 Flange ANSI 1 ½” 300# RF/SF
F3 Flange ANSI 1 ½” 600# RF/SF
F5 Flange ANSI 1 ½” 1500# RF/SF
R4 Flange ANSI 1 ½” 1500# RTJ
F4 Flange ANSI 1 ½” 2500# RF/SF
R5 Flange ANSI 1 ½” 2500# RTJ
G1 Female Thread G 3/4”
N1 Female Thread 3/4” NPT
W1 Swagelok 3/4” Tube inlet (SS-1210-1-12W), standard material only
S0 Sanitary 1” Triclamp, DIN 32676, pmax = 17.2 bar @ 120°C
S2 Sanitary NW20, DIN 11851, pmax = 40 bar @ 120°C