Introduction
The Rheonik RHE 26 Coriolis Mass Flow Transmitter Panel / DIN Rail Mount is a compact, cost-efficient, and high-performance measurement solution engineered for installation in control cabinets, panels, or DIN rail configurations within indoor or protected enclosure environments. Designed for seamless integration into industrial automation and process control systems, the RHE 26 delivers accurate, real-time multi-parameter measurement and reliable data communication. Its robust architecture ensures stable operation under demanding process conditions, while its flexible I/O configuration and communication interfaces support efficient system connectivity, diagnostics, and control. The unit is compliant with hazardous area requirements and incorporates advanced Rheonik technology to maintain high measurement accuracy, repeatability, and long-term reliability across a wide range of applications.
- Measurement Capabilities: Simultaneous measurement of Mass Flow, Volumetric Flow, Density, and Temperature with high precision
- Output Configuration: 1 × Analog output and 2 × configurable Frequency/Pulse/Status outputs for flexible signal transmission
- Input Channels: 2 × Digital inputs and 1 × Analog input for enhanced process interfacing and control logic integration
- Communication Interfaces: PC USB interface for RHECom configuration and diagnostics, plus RS-485 support for Modbus RTU industrial communication
- Display Option: Optional backlit color LCD for clear, real-time visualization of process parameters and system status
- Certification: ATEX and IECEx approved for safe operation in hazardous environments
- Performance Feature: Integrated Rheonik Assurance Factor ensuring continuous measurement integrity and operational reliability
General Specifications
| Housing | IEC61554 panel mount housing. Lockable front cover and DIN rail mount options available |
| Enclosure Rating | IP20 (front IP54 with optional lockable cover) |
| Ambient Temperature | -20°C to +60°C / -4°F to +140°F |
| Dimensions | Please refer to the RHE26 Dimensions page |
| Display | Large high contrast backlit LCD 128 x 24. The screen changes color to indicate a warning or an error |
| Weight | 0.45 kg / 1 lb |
| Operation | 3 x front panel operator buttons for all menu navigation and settings |
| Sensor Connection | Pluggable cage clamp terminal strip. Cable available in lengths up to 100 m / 328 ft for connection to a remote sensor |
| Analog Outputs | 1 x 4-20mA output, active or passive, compliant to NAMUR NE-43 |
| Digital Outputs | 2 x configurable pulse/frequency/status (IEC 60946), max 10 kHz |
| Digital Inputs | 1 x configurable control input (IEC60946) |
| Power Supply | 12-24 VDC ±10%, 4W |
| Digital Data Communications |
Modbus RTU (RS485) |
| Hazardous Area Approvals |
ATEX / IECEx for RHE in ordinary locations (code AS), RHM in all zones |
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