Introduction
The Rheonik RHE 46 is a compact, cost-effective, and high-precision transmitter engineered to deliver advanced flow measurement performance within a DIN rail-mounted form factor, ensuring seamless integration into industrial control panels and process automation systems. Incorporating the full functionality of the Rheonik 40 series, the unit leverages state-of-the-art digital signal processing (DSP) technology to provide highly stable and accurate measurements under varying process conditions. With an exceptional mass flow measurement uncertainty of up to ±0.05%, the RHE 46 is ideally suited for demanding applications such as bottling, batching, and precision process control where reliability and repeatability are critical. Its multiparameter capability enables simultaneous monitoring of key process variables, including mass flow, volumetric flow, density, and temperature, allowing for comprehensive process insight and optimization. The transmitter is designed to support flexible system integration through a wide range of industrial communication protocols and I/O configurations, ensuring compatibility with modern PLC, DCS, and SCADA environments. Enhanced by the Rheonik Assurance Factor, the RHE 46 delivers consistent performance, reduced calibration requirements, and long-term operational stability in challenging industrial environments.
- Cost-effective DIN rail-mounted design for easy installation and space optimization
- Multiparameter measurement: Mass Flow, Volumetric Flow, Density, and Temperature
- Outputs: 1 × Analog, 2 × configurable Frequency/Pulse/Status signals
- Inputs: 1 × Digital input for system control and integration
- Interfaces: PC USB/RHECom, ProfiNet, EtherNet/IP, RS485/Modbus RTU, Modbus TCP
- Rheonik Assurance Factor for enhanced measurement reliability and long-term stability
General Specifications
| Enclosure Material | DIN EN 43880 panel mount housing, PC |
| Enclosure Rating | IP20 |
| Ambient Temperature | -20 to +65°C / -4 to +149°F |
| Dimensions | Enclosure approx. 72 x 110.5 x 48 mm / 2.84 x 4.35 x 1.89 in |
| User Interface and Configuration | No local controls. Plug and play set-up by the factory. Change configuration using the RHECom software package |
| Connection to Sensor | Via flame-retardant and halogen-free Rheonik cable |
| Connection to the power supply and I/O |
Connector with screw-type terminals or push-in terminals for sensor cable and I/O as well as interfaces |
| 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 – 20 mA output, active or passive, as an option; All analog outputs acc. to NAMUR NE43 |
| Pulse/Freq/Status Outputs | Up to 2 configurable pulse/frequency/status outputs (IEC60946). Max. 10 kHz. |
| Digital Inputs | Up to 1 configurable control input (IEC60946). |
| Digital Data Communications | Modbus RTU, Ethernet (Modbus TCP/IPv4), ProfiNet, EtherNet/IP, USB to PC |
| Power Supply | 12 – 24 VDC +/- 10 %, 2W typical, 4W maximum |
| Hazardous Area Approvals | None. RHE46 in ordinary locations. RHM may be operated in Zone 2 and/or Class I div. 2 |
