RHM 02
FLOW SENSOR
The RHM 02 is available with a wide selection of wetted materials and the highest pressure and temperature ratings in the market. It is suitable for all low flow applications where high accuracy is a must.

Range: 0.01 kg/min up to 2.7 kg/min
Pressure: up to 1436 bar (20827 psi)
Temperature: -196°C (-321°F) up to +210°C (410°F)
Accuracy: 0.1 % of rate
Materials: SS 316L / SS 316Ti, Super Duplex – 1.4410, Alloy C22 – 2.4602
Process Connection: ¼" up to 1"General Specifications
Nominal Flow (Qₙₒₘ)*

1.8 kg/min (1.32 lb/min)

Maximum Flow (Qₘₐₓ)*

2.7 kg/min (2.65 lb/min)

Typical Minimum Flow (Qₘᵢₙ)*

0.01 kg/min (0.02 lb/min)

Serial Tube / Single Path

Flow rates Qmax, Qnom and Qmin for "serial" sensors will be 50% of the above listed parallel/dual path version.

Operating Temperature

Fluid temperature range options cover from -196 °C to +210 °C (-320 °F to +410 °F)
For integral transmitter versions please refer to transmitter datasheet 

Ambient Temperature

-50 °C to +80 °C (-60 °F to +180 °F) (standard), versions available for installation in vacuum chamber (-260 °C / -430 °F) or oven (up to +210 °C / +410 °F) (optional)

Pressure Ratings

1436 bar (20827 psi) – dependent upon material

Electrical Connection Sensor
w/o Integral Transmitter

M20 x 1.5 standard cable entry for JM, SM terminal box versions

Optional entries available : ½" NPT or M25 x 1.5 (only for SM) or ¾" NPT (only for SM)

M16 x 1.5 standard cable entry for PM terminal box version

Max. cable length to remote RHE transmitter 100 m/330 ft.

Sensor Enclosure Materials

Stainless steel 304 (standard), SS 316 (optional)

Coated aluminum terminal box, SS 316 terminal box (optional)

Enclosure Type

Protection class IP 66, NEMA 4 (standard), IP 66/67, NEMA 4X (optional)

Wetted Materials

Flow tubes SS 316 L or SuperDuplex

Manifolds SS 316 L, seals FKM, FFKM, FVMQ

Standard flanges SS 316 Ti, other connections SS 316 L

Additional/customer specific materials available upon request

Process Connections

Nearly any – the Rheonik AnyPipeFit Commitment.  Consult factory for types/sizes not listed in this data sheet on the Mechanical Construction pages

Pressure Rating Compliance

PED 2014/68/EU Article 4, Section 3 (SEP)

Certifications and Approvals

ATEX / IECEx Approvals Zone 0, 1, 2 (see page 18)

North American Approvals Cl. I, Div. 1, 2, Gr. A,B,C,D, Zone 0, 1, 2 (see page 18)

American Bureau of Shipping (ABS)

Testing and Inspection

All sensors are hydro tested, calibrated and supplied with a traceable calibration certificate. Customized calibration and testing services are available