| Measuring Principle | Level radar | 
| Characteristic / Application | For basic level measurement in liquids, pastes and slurries; non affected by changing media, temperature changes, gas blankets or vapor; | 
| Encapsulated PVDF or PP clad horn antenna | 
  | 
| Specialities | SIL 2 according to IEC 61508, | 
| Bluetooth® commissioning, | 
| Operation and maintenance SmartBlue App, | 
| Safety and reliability with Multi-Echo Tracking, | 
| HistoROM | 
  | 
| Supply / Communication | 2-wire (HART / PROFIBUS PA/ FOUNDATION Fieldbus) | 
| 4-wire (HART) | 
| Bluetooth® wireless technology and App (optional) | 
| Frequency | K-band (~26 GHz) | 
| Accuracy | +/- 2 mm (0.08 in) | 
| Ambient temperature | -40...+80 °C  | 
| (-40...+176 °F) | 
| Process temperature | -40...+130 °C | 
| (-40...+266 °F) | 
| Process pressure absolute / max. overpressure limit | Vacuum...3 bar  | 
| (Vacuum...43.5 psi) | 
| Main wetted parts | PVDF, PTFE, Viton, PP, PBT | 
|
| Process connection | Thread: | 
| G1 1/2, MNPT1 1/2 | 
| Flange: | 
| UNI DN80...DN150 (3"...6") | 
| Max. measurement distance | Standard: 30 m (98 ft) | 
| With enhanced dynamics: 40 m (131 ft) | 
| Communication | 4...20 mA HART  | 
| PROFIBUS PA | 
| FOUNDATION Fieldbus | 
| Bluetooth® wireless technology | 
| Certificates / Approvals | ATEX, FM, CSA, CSA C/US, IEC Ex, JPN Ex, INMETRO, NEPSI, KC | 
|
| Safety approvals | Overfill prevention WHG | 
| SIL | 
  | 
| Options | Display, | 
| Customized parameterization, | 
| PWIS free, | 
| Remote operation via SmartBlue App using Bluetooth® | 
  | 
| Application limits | Maximum measuring range is dependent on the tank form and/or application: | 
  | 
| Ammoniacal gas phase: | 
| FMR54 in stilling well | 
| Strong buildup formation: | 
| FMR54 with air purge | 
| Low DK: | 
| FMR51 | 
| Only PTFE resistant: | 
| FMR52 | 
| Custody transfer measurement: | 
| FMR5xx |