Introduction
The Rheonik RHE 49 Coriolis Mass Flow Transmitter is an ultra-compact, high-performance Coriolis transmitter engineered for precise, real-time measurement and control in demanding industrial process environments. Designed in line with Rheonik’s AnyInterface Commitment, it offers extensive communication flexibility, enabling seamless integration with modern control architectures, PLCs, DCS, and SCADA systems. Its advanced digital signal processing ensures high measurement accuracy, stability, and repeatability even under dynamic operating conditions. The transmitter supports multi-variable measurement capabilities while maintaining a compact footprint, making it ideal for installations where space optimization and performance reliability are critical. With robust design features suitable for hazardous area deployment and enhanced diagnostic capabilities through Rheonik Assurance Factor, the RHE49 ensures continuous process visibility, operational safety, and long-term measurement integrity.
- High-accuracy multi-variable measurement of mass flow, volumetric flow, density, and temperature
- Configurable outputs: 1 × analog output, 2 × frequency/pulse/status outputs for flexible signal interfacing
- Integrated 1 × digital input for external control and system interaction
- Extensive communication protocols including PC USB / RHECom, RS 485 / Modbus RTU, Modbus TCP, Ethernet/IP, Profinet, EtherNet, and HART
- Optional backlit color LCD for local monitoring, diagnostics, and configuration
- Certified for installation in hazardous areas, ensuring safe operation in critical environments
- Equipped with Rheonik Assurance Factor® for advanced diagnostics, reliability monitoring, and predictive maintenance support
General Specifications
| Enclosure Material | Coated aluminum or SS 316 |
| Enclosure Rating | Alu IP66 / NEMA 4, optional SS 316 w/ IP66 |
| Ambient Temperature | -20 to +60°C / -4 to +140°F (enhanced -40 to +65°C) |
| Dimensions | Up to 150 x 100 x 61 mm / 5.91 x 3.94 x 2.40 in – for details see datasheet |
| Display | An optional high-contrast backlit LCD color display is available |
| User Interface and Configuration | Plug and play set-up by the factory. Change configuration by the RHECom software package or display (if ordered) |
| Cable Entries | M20 x 1.5 cable gland (Alu), M16 x 1.5 cable gland (SS 316) standard |
| Computer Connection | Via Modbus RTU, TCP, ProfiNet, EtherNet/IP or USB to PC |
| Electrical Connection | Via M12 male connector instead of a cable gland |
| Totalizers | 6 x resettable forward, reverse, and net totalizers for mass and volume, 2 x non-resettable totalizers for mass and volume |
| Analog Outputs |
One 4-20mA output, active or passive, as an option |
| Pulse/Freq/Status Outputs | 2 pulse/frequency or status outputs (IEC60946) w/ max. 10 kHz |
| Digital Inputs | 1 configurable control input (IEC60946) |
| Digital Data Communications | Modbus RTU, Ethernet (Modbus TCP/IPv4), ProfiNet, EtherNet/IP, HART |
| Power Supply | 12-24 VDC +/- 10%, 2W typical, 4W maximum |
| Hazardous Area Approvals | Zone 2 or Class 1 Div 2 – for details see datasheet |
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