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Rheonik RHE42 Coriolis Mass Flow Transmitter

Rheonik RHE45 Coriolis Mass Flow Transmitter

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Rheonik RHE42 Coriolis Mass Flow Transmitter with advanced digital signal processing capability and in conjunction with our sensors, the RHE 42 can achieve an ultimate mass flow measurement uncertainty of 0.05 %, making it ideal for both filling and bottling or any kind of high accuracy/reliability plant flow or density measurement. Connectivity includes a full suite of communications buses including Foundation Fieldbus and Modbus TCP/IP. The RHE 42 is a well-specified transmitter relevant for large-scale plant and project opportunities.

  • Measures Mass Flow, Volumetric Flow, Density, and Temperature
  • Outputs 2 x Analog, 2 x Frequency/Pulse, 2 x Digital Status
  • Inputs 2 x Digital
  • PC USB / RHECom, RS 485 / Modbus RTU, Modbus TCP, Foundation Fieldbus and Profibus PA
  • Optional Backlit Color LCD
  • Installation in Hazardous Areas
  • Rheonik Assurance Factor®
Rheonik RHE42 Coriolis Mass Flow Transmitter
Rheonik RHE42 Coriolis Mass Flow Transmitter

Rheonik RHE42 Flow Transmitter Features

  • Fully digital design – no risk of potential measurement drifts due to analog components’ temperature behavior
  • Latest signal processing and filtering techniques allow 0.05% accuracy on flow measurement over the entire range
  • Measurement update rates of 4kHz by patented Fast Response Software Version
  • Real-time clock incl. battery on board plus 1 Gb memory for data collection and later off-line analysis
  • Display with Color backlit display with 3 through-glass buttons for local configuration and operation through an intuitive user menu
  • Multifunction performance provides simultaneous mass flow, volumetric flow, density and
    temperature measurements
  • First-in-class connectivity with USB, Modbus RTU, Modbus TCP/IPv4, HART, Profibus PA,
    Foundation Fieldbus H1
  • Classical output as 4-20mA, pulse, frequency, and status – also available as intrinsically safe outputs
  • 8 totalizers – 2 non-resettable, 6 for mass/volume (positive, negative, net flow)
  • License-free RHEComSoftware package for configuration and servicing
  • RHEComPro+ Software Suite for extended diagnostics incl. simulator for training
  • Connects to any Rheonik Coriolis sensor\

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  • Filling and batching
  • Robot-mounted flow measurement
  • Any high accuracy
  • reliability plant flow or density measurement
  • Oil and Gas
  • Mixing and blending of chemicals
  • PU and Paint
  • Compact flow measurement for OEM’s and skid manufacturers / High pressure,
  • low flow chemical injection measurements – sensors up to 1400 bar (20000 psi) available

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  • Very compact highly accurate multifunctional flow measurement
  • IoT/ Industry 4.0 ready
  • Compatible with various Ethernet standards
  • Fast and easy setup using RHEComsoftware incl. data logging
  • Highly reliable thanks to self-diagnostic and Assurance Factor®

Rheonik RHE42 Flow Transmitter Specification

Enclosure Material

Powder coated aluminum

Enclosure Rating

IP65/Type 4, optional IP66-67/Type 6

Ambient Temperature

-20 to +60°C  / -4 to +140°F, optional -40°C to +65°C / -40°F to 149°F

Integral version depends upon fluid temperature, refer to next page


Enclosure approx. 144 x 108 x 139 mm / 5.67 x 4.25 x 5.47 in

Weight approx. 2.3 kg / 5.1 lbs

User Interface and Configuration

Local Display Version

High contrast backlit LCD color display and 3 x through-glass operator buttons.  Configure locally or with RHECom software

Reduced display visibility below -10°C  / 14°F

Blind Transmitter Version

No local controls. Configure through RHECom software package

Connection to Sensor

Integral/Compact to sensor or remote mount with 3m/10m cable

Cable Entries

2 x ½” NPT for power and I/O

Computer Connection

Via Modbus RTU to PC


6 x resettable forward, reverse and net totalizers for mass and volume

2 x non-resettable totalizers for mass and volume

Analog Outputs

Up to 2 x 4-20mA outputs, active or passive.

Intrinsically safe versions available

Pulse/Freq/Status Outputs

Up to 2 configurable pulse/frequency/status outputs (IEC60946).  Max. 10kHz.  Intrinsically safe versions available (open collector)

Digital Inputs

Up to 2 configurable control inputs (IEC60946).

Intrinsically safe versions available

Digital Data Communications

HART, Modbus RTU, Ethernet (Modbus TCP/IPv4), Foundation Fieldbus H1 (FISCO), Profibus PA

Power Supply

12-24 VDC +/- 10%, 2W typical, 4W maximum

Hazardous Area Approvals


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RHECom Software

The RHE42 transmitter is a fully featured device with many sophisticated functions and configuration is necessary for proper performance of these functions. RHECom software is available in three versions – Free, Pro and Pro+. RHEComFree is available for download at no extra cost or on USB flash drive. RHEComFree allows full setup of transmitter parameters and includes a useful datalogging function for monitoring performance of the meter.

For a small one-time license fee, RHEComPro and RHEComPro+ offer additional insight and setup convenience menus. RHEComPro includes data logging, trending and broad diagnostic capabilities. RHEComPro+ takes flow meter management one step further with a revolutionary fully functioning simulator application. With the simulator, you can trial run your application from the convenience of your office, adjusting transmitter settings, setting alarms and filters, and creating transmitter configuration files for upload into the actual unit. The simulator is also ideal for training – it exactly mimics the front panel of the instrument display and buttons when clicked and includes controls for adjusting flow, density and temperature readings just like the unit was in line!

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