| Parameter | Value |
| RHE 21 | |
| Measuring quantities | Mass flow, volume flow, density, temperature |
| Output | Analog, frequency/pulse, digital status |
| Temperature | -40 … +150 °C |
| Communication | USB RHECom, RS485, Modbus RTU |
| Certificate | — |
| LCD | Optional, backlit colour crystal display |
| Mounting | — |
| RHE 26 | |
| Measuring quantities | Mass flow, volume flow, density, temperature |
| Output | Analog, frequency/pulse, digital status |
| Temperature | -40 … +150 °C |
| Communication | USB RHECom, RS485, Modbus RTU, HART |
| Certificate | ATEX / IEC |
| LCD | Optional, backlit colour crystal display |
| Mounting | — |
| RHE 27 | |
| Measuring quantities | Mass flow, volume flow, density, temperature |
| Output | Analog, frequency/pulse, digital status |
| Temperature | -40 … +150 °C |
| Communication | USB RHECom, RS485, Modbus RTU, HART |
| Certificate | ATEX / IEC / CSA |
| LCD | Optional, backlit colour crystal display |
| Mounting | — |
| RHE 28 | |
| Measuring quantities | Mass flow, volume flow, density, temperature |
| Output | Analog, frequency/pulse, digital status |
| Temperature | -40 … +150 °C |
| Communication | USB RHECom, RS485, Modbus RTU, HART |
| Certificate | ATEX / IEC / CSA |
| LCD | Optional, backlit colour crystal display |
| Mounting | — |
| RHE 42 | |
| Measuring quantities | Mass flow, volume flow, density, temperature |
| Output | Analog, frequency/pulse, digital status |
| Temperature | -40 … +210 °C |
| Communication | USB RHECom, RS485, Modbus RTU |
| Certificate | — |
| LCD | Optional, backlit colour crystal display |
| Mounting | — |
| RHE 45 | |
| Measuring quantities | Mass flow, volume flow, density, temperature |
| Output | Analog, frequency/pulse, digital status |
| Temperature | -40 … +210 °C |
| Communication | USB RHECom, RS485, Modbus RTU, HART |
| Certificate | ATEX / IEC |
| LCD | Optional, backlit colour crystal display |
| Mounting | — |
| RHE 46 | |
| Measuring quantities | Mass flow, volume flow, density, temperature |
| Output | Analog, frequency/pulse, digital status |
| Temperature | -40 … +210 °C |
| Communication | USB RHECom, RS485, Modbus RTU, HART |
| Certificate | ATEX / IEC / CSA |
| LCD | Optional, backlit colour crystal display |
| Mounting | DIN rail mounting |
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