Liquicap M FMI51
Technical Data
CompareContinuous / Liquids
| Measuring Principle | Capacitive |
| Characteristic / Application | Fully insulated rod probe, for standart- and extreme process conditions (temperature, pressure, build-up) |
| Interface measurement | Interfaces liquid / liquid also with emulsion layers |
| Specialities | Inactive length Factory calibrated short response time by change of value |
| Supply / Communication | 12-36V DC HART PFM |
| Accuracy | Repeatablity 0,1% |
| Linearity error for conductive liquids | <0.5% |
| Ambient temperature | -50°C...+70°C -58°F...+158°F |
| Process temperature | -80°C...200°C -112°F...392°F |
| Process pressure / max. overpressure limit | Vacuum ... 100 bar (Vaccum ... 1450 psi) |
| Main wetted parts | Insulation material: PTFE,PFA 316L |
| Process connection | G1/2, G 3/4, G 1, G1 1/2 /NPT 1/2, NPT 3/4, NPT 1", NPT1 1/2 Flanges from DN25.../ASME 1".../JIS... |
| Process connection hygienic | Tri-Clamp ISO02852 gap free plated Dairy coupling Flush-mounted seal |
| Sensor length | Total length: 6m (20ft) Inactive length: max. 2m (7ft) |
| Max. measurement distance | 0.1 m ... 4.0 m (0.3 ft ... 13 ft) |
| Communication | 4...20mA HART PFM |
| Certificates / Approvals | ATEX, FM, CSA, IEC Ex, TIIS, INMETRO, NEPSI, EAC |
| Safety approvals | SIL |
| Design approvals | EN 10204-3.1 NACE MR0175 |
| Hygienic approvals | 3A, EHEDG |
| Marine approval | GL/ ABS/ DNV |
| Options | Separate housing gas-tight probe seal |
| Application limits | Insufficient clearance towards ceiling Changing, non-conductive media, conductivity < 100 μS/cm Notice the pressure and temperature derating |
The FMI51 is the rod version. If a cable capacitive level transmitter is required, use the FMI52. For measuring light solids, use the FTC260.
The Liquicap FMI51/FM151 is a fully insulated rod probe for level monitoring in a wide range of liquids, and it also measures effectively in media prone to buildup and at extremely high temperatures. The measurement is unaffected by the dielectric constant (DC). Used together with the Fieldgate FXA320 (remote reading of measured values via Internet technology), Liquicap is the ideal choice for inventory management solutions.
Benefits:
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Compliant with IEC 61508, can be used in safety systems up to functional safety level SIL2
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Numerous certificates and approvals for reliable use and a wide range of applications
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No calibration required (factory preset). No calibration is needed when measuring media with a conductivity of 100 μS/cm and higher
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Process wetted parts made of corrosion-resistant, FDA-approved materials
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Menu-guided on-site configuration via plain text display (optional)
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Two-stage overvoltage protection
Application areas:
The instrument is unaffected by the dielectric constant (DC); liquids have a conductivity of 100 μS/cm, and multiple liquids can be measured without recalibration.
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Process connection: flange and thread
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Process pressure: -1...+100 bar (+1,450 psi)
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Measuring range: 0.1...4.0 m (0.3...13 ft)
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Temperature: -80...+200 °C (-112...+392 °F)
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International explosion protection approval, WHG overflow protection, SIL, hygienic approval, marine approval
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Technical information
Technical data
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Measuring principle video
Source: public information from the Endress+Hauser website
Case Studies
Municipal Wastewater Treatment — Wastewater Treatment Plant · Capacitance Application Case
Project Background
Municipal Wastewater Treatment customers at the Wastewater Treatment Plant stage have long faced the challenge of insufficient accuracy in effluent quality monitoring and instruments prone to contamination causing data drift, affecting compliance discharge, placing higher demands on the stability and measurement accuracy of Capacitance.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Capacitance for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Municipal Wastewater Treatment conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Food & Beverage — Food Production Line · Capacitance Application Case
Project Background
Food & Beverage customers at the Food Production Line stage have long faced the challenge of high hygienic measurement requirements, with inline instruments needing to withstand CIP/SIP cleaning while maintaining stable accuracy, placing higher demands on the stability and measurement accuracy of Capacitance.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Capacitance for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Food & Beverage conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Chemical & Pharmaceutical — Reactors and Storage Tanks · Capacitance Application Case
Project Background
Chemical & Pharmaceutical customers at the Reactors and Storage Tanks stage have long faced the challenge of highly corrosive media and complex conditions, requiring corrosion-resistant and explosion-proof instruments, placing higher demands on the stability and measurement accuracy of Capacitance.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Capacitance for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Chemical & Pharmaceutical conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
Power & Energy — Power Plant Boiler and Turbine · Capacitance Application Case
Project Background
Power & Energy customers at the Power Plant Boiler and Turbine stage have long faced the challenge of unstable measurement under high temperature and pressure, with high maintenance and downtime costs, placing higher demands on the stability and measurement accuracy of Capacitance.
Solution
Based on the on-site conditions, the Ainstru technical team selected suitable Capacitance for the customer and delivered one-stop service covering selection, installation, commissioning and tuning.
Results
- Measurement accuracy and response speed significantly improved, with stable and reliable data;
- Instruments adapt to complex Power & Energy conditions, greatly reducing maintenance;
- Helping customers achieve continuous online monitoring and cost reduction, highly recognized by customers.
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