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Rheonik RHE27 Coriolis Mass Flow Transmitter

Rheonik RHE27 Coriolis Mass Flow Transmitter

Table of Contents

Rheonik RHE27 Coriolis Mass Flow Transmitter is an advanced function transmitter designed for rack or panel mounting in an indoor environment. Features such as API Standard Volume correction and Net Oil calculation are available.

RHE27 Rack/Panel Mount Multifunction Mass Flow Transmitter

  • Measures Mass Flow, Volumetric Flow, Density and Temperature
  • Outputs 2 x Analog, 2 x Frequency/Pulse, 2 x Digital Status,´
  • Inputs 2 x Digital, 1 x Analog
  • PC USB for RHECom, RS 485 for Modbus RTU, HART over Analog
  • Optional Backlit Color LCD
  • ATEX/IEC Ex, CSA approved
  • Rheonik Assurance Factor®


  • Rack/Panel Mounting
  • Operate with RHM sensor in hazardous area
  • Selectable Units for Mass, Volume, Density and Temperature
  • Positive, negative and net totalizers for both volume and mass flow
  • Two configurable pulse/frequency/status outputs – double pulse available
  • Two analog outputs
  • Two configurable digital status outputs
  • Configurable digital input
  • Analog input configurable for pressure or density
  • Advanced functions: Net Oil, Baume/Brix, % Solids, Standard Density and Standard Volume (API MPMS Ch. 11)
  • Modbus RTU and HART
  • Custody transfer lockout switch and seal point
  • Backlit Color LCD display and 3 operator buttons with intuitive menu design
  • USB connection for PC running Rheonik RHECom software
  • Built-in Assurance View® Advanced Diagnostic Set – clear publication of measurement status with Assurance Factor® and/or color changing display
  • Password Protected Setup
  • Upload and download of configuration files
  • Power consumption less than 5 W
  • Optional lockable front cover

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General Specifications


IEC 61554 Panel Mount Housing. Optional lockable front cover

Enclosure Rating:

IP20 (front). IP54 with lockable front cover

Ambient Temperature:

-20°C to +60°C (-4°F to +140°F)


96 x 144 x 61/75 mm (3.78 x 5.67 x 2.4/2.95 in)


Backlit color LCD.  Screen changes color to indicate warning or error


0.55 kg (1.2 lb)


3 x front panel operator buttons for all menu navigation and settings

Sensor Connection:

Pluggable terminal strip.  Cable available in lengths up to 100m for connection to remote sensor

Analog Outputs:

Up to 2 x 4-20mA outputs, active / passive, compl. to NAMUR NE-43

Uncertainty of the analog output +/- 0.1% of reading, +/- 10µA

Digital Outputs:

Up to 2 x configurable status outputs (IEC60946)

Pulse/Frequency Outputs:

Up to 2 x configurable pulse/frequ. outputs (IEC60946), max 10 kHz

Digital Inputs:

Up to 2 x configurable control inputs (IEC60946)

Analog Input (optional):

1 x 4 – 20 mA analog input (active) for two-wire external sensor

Power Supply:

100-240 VAC (48 to 62 Hz), 5W or 12-24 VDC +/- 10%, 4W

Digital Data Communications:

Modbus RTU (RS485)
Connection to a PC (USB) with Rheonik RHECom software
HART over analog output (optional)

Hazardous Area Approvals:

ATEX / IECEx, cCSAus for RHE27 in ordinary area, RHM in all zones – please see Part Number Code page. Others available on request

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  • General process flow measurement
  • Batching and Mixing
  • Feed stocks and transfers
  • Custody transfer


  • 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®

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RHECom Software

The RHE27 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!

Standard Operation Package (Part Number Code SO)
The RHE27 Standard Operation Package provides the following measurement and function

  • Direct Mass Flow Measurement
  • Temperature Measurement
  • Fixed and Calculated Density Function
  • Calculated Actual Volume Measurement for Liquids and Gas
  • Standardized/Normalized Volume Measurement for Gas
  • Password Protection
  • Batch Controller
  • Assurance View® Diagnostics

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Power Supply Options

The RHE27 can be configured with one of three power supply options:

  • Universal AC Power – 100-240 VAC ±10% (48 to 62 Hz) (Part Number Code A1)
  • Wide Tolerance DC Power – 12-24 VDC ±10%, 4W (Part Number Code D1)
  • Dual Supply – 100-240 VAC ±10% (48 to 62 Hz) / 12-24 VDC ±10%, 4W (Part Number Code U1) This unique option provides inputs for simultaneous connection of both a universal AC and separate DC supply. The transmitter utilizes AC power when available but will switch to the DC supply in the event of AC power outage. The DC supply can be a battery source. As an example, an RHE27 transmitter and connected sensor will operate for 10 days or more on a
    typical automobile battery.

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