Introduction
The Endress+Hauser Liquicap FMI51 is a fully insulated capacitive rod probe for continuous level and interface measurement in liquids. Built for standard and extreme conditions (high temperatures, pressures, and build-up forming media), it offers factory-calibrated, dielectric-independent measurement with HART/PFM communication for inventory and process control.
Key advantages
1. Dielectric-Independent Measurement: Delivers stable, calibration-free readings for media with conductivity ≥100µS/cm, unaffected by changes in dielectric constant.
2. Extreme Condition Resilience: Withstands process temperatures from -80°C to +200°C and pressures up to 100 bar, suitable for harsh industrial environments.
3. Comprehensive Safety & Compliance: SIL2 functional safety certified, with global explosion-proof, hygienic (3A/EHEDG), and marine approvals for universal use.
4. High Precision & Repeatability: Offers 0.1% repeatability and <0.5% linearity error for conductive liquids, ensuring accurate inventory and process control.
5. Flexible Installation & Integration: Supports multiple process connections (threads, flanges, hygienic fittings) and HART/PFM communication, compatible with FXA320 for remote monitoring.
Specification
| Parameter | Specification |
|---|---|
| Measuring Principle | Capacitive continuous level measurement |
| Measuring Range | 0.1 m to 4.0 m (0.3 ft to 13 ft) |
| Process Temperature | -80°C to +200°C (-112°F to +392°F) |
| Ambient Temperature | -50°C to +70°C (-58°F to +158°F) |
| Process Pressure | Vacuum to 100 bar (Vacuum to 1450 psi) |
| Wetted Parts | 316L stainless steel; Insulation: PTFE/PFA |
| Communication | 4…20mA HART, PFM |
| Safety Approvals | SIL2, ATEX, FM, CSA, IEC Ex |
| Hygienic Approvals | 3A, EHEDG |
| Key Feature | Dielectric-independent measurement for media ≥100µS/cm conductivity |